EP0387049A2 - Liquid detergent and/or bleaching compositions - Google Patents
Liquid detergent and/or bleaching compositions Download PDFInfo
- Publication number
- EP0387049A2 EP0387049A2 EP90302462A EP90302462A EP0387049A2 EP 0387049 A2 EP0387049 A2 EP 0387049A2 EP 90302462 A EP90302462 A EP 90302462A EP 90302462 A EP90302462 A EP 90302462A EP 0387049 A2 EP0387049 A2 EP 0387049A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- oxide
- tertiary amine
- tea
- composition
- bleaching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003599 detergent Substances 0.000 title claims abstract description 59
- 239000000203 mixture Substances 0.000 title claims abstract description 49
- 238000004061 bleaching Methods 0.000 title claims abstract description 37
- 239000007788 liquid Substances 0.000 title claims abstract description 34
- 150000003512 tertiary amines Chemical class 0.000 claims abstract description 16
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 41
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- 150000001204 N-oxides Chemical class 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 229910001868 water Inorganic materials 0.000 claims description 17
- 239000007844 bleaching agent Substances 0.000 claims description 11
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 11
- 239000000194 fatty acid Substances 0.000 claims description 11
- 229930195729 fatty acid Natural products 0.000 claims description 11
- 150000004665 fatty acids Chemical class 0.000 claims description 11
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylene diamine Substances C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 11
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Substances [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 10
- 150000001412 amines Chemical class 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- -1 triethylenediamine N-oxide Chemical class 0.000 claims description 4
- VTGXVUQXDHXADV-UHFFFAOYSA-N 1-methyl-1-oxidopiperidin-1-ium Chemical compound C[N+]1([O-])CCCCC1 VTGXVUQXDHXADV-UHFFFAOYSA-N 0.000 claims description 3
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 125000002947 alkylene group Chemical group 0.000 claims description 2
- 150000002391 heterocyclic compounds Chemical class 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 125000005270 trialkylamine group Chemical group 0.000 claims description 2
- DDNBPWZIXPAKRN-UHFFFAOYSA-N 2-hydroxy-n,n-bis(2-hydroxyethyl)ethanamine oxide Chemical group OCC[N+]([O-])(CCO)CCO DDNBPWZIXPAKRN-UHFFFAOYSA-N 0.000 claims 1
- 238000011065 in-situ storage Methods 0.000 claims 1
- LFMTUFVYMCDPGY-UHFFFAOYSA-N n,n-diethylethanamine oxide Chemical compound CC[N+]([O-])(CC)CC LFMTUFVYMCDPGY-UHFFFAOYSA-N 0.000 claims 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 101
- 239000000047 product Substances 0.000 description 37
- 238000012360 testing method Methods 0.000 description 18
- 239000000654 additive Substances 0.000 description 13
- 238000005406 washing Methods 0.000 description 13
- 239000000306 component Substances 0.000 description 11
- 230000000996 additive effect Effects 0.000 description 9
- 230000000875 corresponding effect Effects 0.000 description 9
- 235000011121 sodium hydroxide Nutrition 0.000 description 8
- 229960004418 trolamine Drugs 0.000 description 8
- 235000019641 whiteness Nutrition 0.000 description 8
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Natural products CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 241000219146 Gossypium Species 0.000 description 4
- BGRWYDHXPHLNKA-UHFFFAOYSA-N Tetraacetylethylenediamine Chemical compound CC(=O)N(C(C)=O)CCN(C(C)=O)C(C)=O BGRWYDHXPHLNKA-UHFFFAOYSA-N 0.000 description 4
- 238000004453 electron probe microanalysis Methods 0.000 description 4
- UFZOPKFMKMAWLU-UHFFFAOYSA-N ethoxy(methyl)phosphinic acid Chemical compound CCOP(C)(O)=O UFZOPKFMKMAWLU-UHFFFAOYSA-N 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 235000020095 red wine Nutrition 0.000 description 4
- 239000000344 soap Substances 0.000 description 4
- 244000060011 Cocos nucifera Species 0.000 description 3
- 235000013162 Cocos nucifera Nutrition 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 3
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 239000013065 commercial product Substances 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 150000002978 peroxides Chemical class 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- PAMIQIKDUOTOBW-UHFFFAOYSA-N 1-methylpiperidine Chemical compound CN1CCCCC1 PAMIQIKDUOTOBW-UHFFFAOYSA-N 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- XSVSPKKXQGNHMD-UHFFFAOYSA-N 5-bromo-3-methyl-1,2-thiazole Chemical compound CC=1C=C(Br)SN=1 XSVSPKKXQGNHMD-UHFFFAOYSA-N 0.000 description 1
- POKJZJLPYYQUEB-UHFFFAOYSA-N CC(C[N+](CCO)(CCO)[O-])O Chemical compound CC(C[N+](CCO)(CCO)[O-])O POKJZJLPYYQUEB-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 239000004141 Sodium laurylsulphate Substances 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000007810 chemical reaction solvent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229940000425 combination drug Drugs 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000010412 laundry washing Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 1
- NASFKTWZWDYFER-UHFFFAOYSA-N sodium;hydrate Chemical compound O.[Na] NASFKTWZWDYFER-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/39—Organic or inorganic per-compounds
- C11D3/3947—Liquid compositions
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/26—Organic compounds containing nitrogen
Definitions
- the invention relates to prevailingly liquid detergent and/or bleaching compositions, containing low molecular weight tertiary amines, for example triethanolamine; the invention relates in particular to water-based liquid laundry detergent compositions usually utilized for automatic washing machines, as are described for example in British Patent No. 2,197,340.
- the water-based liquid detergents for laundry washing machines at present in commerce have compositions, which can be substantially divided into two classes:
- the invention rel strictlyates to liquid detergent and/or bleaching compositions containing at least a low molecular weight tertiary amine oxide, selected from the group consisting of:
- the neutralization of the acid components of the liquid detergent(fatty acids, alkylbenzenesulphonic acid etc.), which is usually carried out with TEA, can be completed, in the presence of TEAO, with NaOH or, even better, with KOH, without jeopardizing the solution homogeneity; the use of potash is preferred to caustic soda as it allows a higher stability of the liquid detergent compositions at lower temperatures. If amine is not fully replaced by N-oxide, the alkali amount can be advantageously reduced.
- the composition of the invention may thus additionally contain a low molecular weight tertiary amine.
- N-oxides are obtainable for example by oxidation of the corresponding tertiary amines with hydrogen peroxide. Said oxidation may occur with H2O2 either substoichiometric amounts or in excess.
- MnO2 has been suggested to eliminate the residual H2O2 by MnO2, which is considered an excellent agent for H2O2 decomposition but which does not cause N-oxide damage.
- MnO2 is not possible in practice. It would require careful filtration, which involves a complex operation. However even after a careful filtration, small traces of MnO2 remain in the N-oxide and by consequence also in the detergents containing it. These residues would be able to exert their decomposition effect also on the bleaching peroxides which are added to the liquid detergents during the washing cycle thereby drastically reducing the performance of the peroxides.
- the applicant has noted that if the hydrogen peroxide amount is maintained below the stoichiometric values, it is possible to obtain a practically H2O2-free product, immediately ready for use in the detergents formulations and/or for water evaporation, if a concentration N-oxide is desired.
- the thus obtained product contains low amounts of converted tertiary amine which do not impair at all the bleaching power and, on the contrary, make the detergent formulability easier.
- a H2O2 amount ranging from 70% to 99% of the stoichiometric value is recommended in the amine oxidation step.
- the presence of unconverted amine furthermore balances the lower alkalinity of the corresponding N-oxide, and the consequent lower neutralizing power, with respect to the fatty acids, promotes the detergent homogeneity and reduces the amount of alkali necessary to bring the composition to a prefixed pH value.
- TAA triethanolamine
- PABCO triethylenediamine
- N-methylmorpholine N-methylpiperidine
- Oxidation of tertiary amines with hydrogen peroxide can be conducted on the amines as such, on the salts thereof with fatty acids (TEA soaps) or with other acid compounds, or also on a liquid detergent which contains the amine, by adding H2O2 to said detergent.
- fatty acids TEA soaps
- H2O2 fatty acids
- the detergent composition may contain other components conventional for non-built liquid detergents.
- the detergents are prevailing liquids, that is they may contain suspended solids but have a continuous liquid phase.
- Residual H2O2 was allowed to spontaneously decompose in the course of a few days, and subsequently the product was dried by evaporation of water (in a rotary evaporator under vacuum) at a temperature not exceeding 40°C. A dry residue of about 165 g, corresponding to a practically quantitative yield, was obtained.
- Example 1 was repeated reducing the amount of hydrogen peroxide (at 33.8%) to 103 g, an amount equivalent to about 98% of the stoichiometric value; the final product was analyzed for its H2O2 content by means of the paper method (PEROXID-TEST; MERKOQUANT 1011) and the analysis result was negative. No appreciable traces of residual H2O2 were found.
- example 1 In order to obtain a more concentrated TEAO, without resorting to one or more water evaporation steps, example 1 was repeated, eliminating the 300 g of water (added in example 1 as a reaction solvent) and directly reacting TEA with H2O2.
- 111g of H2O2 at 33.8% by weight were added at 55°C to 150 g of TEA, whereafter the temperature was maintained at 55°C for 2 hours.
- An aqueous solution at about 67% by weight of TEAO was thus obtained, this value being much higher than the N-oxide concentration obtained in example 1 (29%).
- a "built” type commercial product product II
- product III non-built type commercial product
- a laboratory-reproduced formulate having a composition similar to said product III (as to the most important components,TEA included) and an analogous formulate, also reproduced in laboratory, in which TEA had been replaced by N-oxide (TEAO) were compared; the last two formulates are indicated in Table 1 as III/TEA and III/TEAO, respectively.
- Formulates III and III/TEA exhibited a pH value ranging from 8 to 8.5, while formulate II had a pH value equal to about 10; formulate III/TEAO had a pH value equal to 6.8, due to the lower alkalinity of TEAO in comparison with TEA.
- the pH of formulate III/TEAO was brought to a value of 8-8.5 (namely to the value of the "non- built" detergents) by addition of NaOH.
- the addition of NaOH, in order to adjust the pH value is a usual step in the formulation of the liquid detergents, also in the absence of TEAO, and therefore it does not affect the validity of the invention.
- the following combinations detergent + bleaching agents
- test-pieces were rinsed in running water, dried, ironed and subjected to whiteness determination as described in example 4.
- PRODUCT IV another commercial liquid product
- TEA included product IV/TEA
- TEAO formulate IV/TEAO
- Example 4 was repeated with liquid "non-built” formulations, additioned, at the moment of washing, with a commercial bleaching product (PRODUCT I) (and having a basic composition like composition III/TEA of example 4) and with other formulations in which TEA had partially been replaced by TEAO, maintaining the sum TEA+TEAO constant, according to the scheme of Table 5.
- PRODUCT I commercial bleaching product
- Example 4 was repeated with liquid "non-built” formulations, additioned, at the moment of washing, with a commercial bleaching product (PRODUCT I) (and having a basic composition like composition III/TEA of example 4) and with other formulations in which TEA had partially been replaced by TEAO, maintaining the sum TEA+TEAO constant, according to the scheme of Table 5.
- PRODUCT I commercial bleaching product
- Formulates A-G of example 6 were subjected to a low temperature stability test, in order to ascertain possible precipitations or demixing as the inner temperature of the detergent decreases.
- the formulates were gradually cooled by immersing them into an ice bath, till reaching an inner temperature of +3° C, then they were maintained at such temperature for 30 minutes.
- the results of the visual observations are reported on Table 7.
- TABLE 7 Formulate Appearance A Clear, homogeneous B Clear, homogeneous C Clear, homogeneous D Clear, homogeneous E Clear, homogeneous F Clear, homogeneous G Clear, homogeneous This proves that the use of TEAO instead of TEA does not adversely affect the storage stability of the formulates at low temperatures.
- the conversion of TEA to TEAO can be carried out also using a liquid (TEA-containing) detergent, by adding to said detergent a suitable H2O2 amount.
- a liquid (TEA-containing) detergent by adding to said detergent a suitable H2O2 amount.
- the detergent so treated (freed from the residual H2O2 traces) was utilized to carry out a bleaching test according to the modalities described in example 5, using as a blank a commercial detergent (PRODUCT III).
- PRODUCT III a commercial detergent
- 5.3 g of detergent, dissolved in 250 cm3 of distilled water (at 60°C) were additioned, under stirring, with 0.7 g of a bleaching mixture, described in example 5, consisting of PBS-1 (48%) and TEAO (52%) and furthermore, immediately after, with two 5x5 cm test-pieces of cotton EMPA 114, stained with red wine.
- the liquid non-built detergents containing TEAO instead of TEA can be brought to the pre-established pH value, usually 8-8.5, either with NaOH or with KOH.
- the formulate acquires an even higher stability at low temperatures.
Abstract
Liquid detergent and/or bleaching compositions for laundry use, contain low molecular weight tertiary amine oxide. The detergents are of the non-built type.
Description
- The invention relates to prevailingly liquid detergent and/or bleaching compositions, containing low molecular weight tertiary amines, for example triethanolamine; the invention relates in particular to water-based liquid laundry detergent compositions usually utilized for automatic washing machines, as are described for example in British Patent No. 2,197,340.
- The water-based liquid detergents for laundry washing machines at present in commerce have compositions, which can be substantially divided into two classes:
- (a) clear compositions, consisting of highly concentrated solutions of surface-active matters, which do not contain water softeners (builders) and consequently are defined as "non-built" compositions; these compositions exhibit a rather low viscosity (below 500 mPa.s at room temperature) and usually contain triethanolamine (TEA), generally as a neutralizer of the acid components and/or as a solubilizer of the surface-active compounds;
- (b) opaque compositions, which contain low concentrations of surface-active components and considerable amounts of builder (for example zeolites 4A, generally present in the form of suspensions) and which are therefore defined as "built" compositions; such compositions exhibit relatively high viscosities (higher than 1,000 mPa.s at room temperature).
- Both the "built" products and the "non-built" products do not contain any stain-removing (bleaching) component and, contrary to what happens with the detergents for washing machines (in powder), they do not exhibit satisfactory stain removal activity (chemical bleaching) and therefore provide lower performances.
- It is generally assumed that this significant inferiority of the liquid detergents as compared with the corresponding products in powder can be overcome merely by adding to the liquid, as washing begins, the usual bleaching additives based, for example, on perborate, percabonate, hypochlorite and the like, either activated or non activated.
- Conversely,the Applicant has surprisingly observed that the same bleaching results, at the doses suggested for the bleaching agents, are obtained only with the liquid detergents of the "built" type, while with the "non-built" products the stain-removal action of the additive, for example perborate, is negligible, so that in practice the addition of that additive is nearly useless. If one considers that the use of liquid detergents for washing machines has great possibilities of development and that the detergent compositions of the "non-built" type are the most widely utilized, the inefficiency of non-built detergents in their bleaching action (despite the addition of bleaching agents which have proved to be highly effective with other compositions) represents a serious problem.
- Thus, it is an object of the present invention to allow the bleaching agents to exert their stain-removing action also in the presence of liquid detergents of the " non-built" type and, by consequence, to permit that also with such detergents bleaching effects may be obtained when the conventional bleaching additives are added at the suggested doses. The Applicant has now succeeded in properly modifying the composition of the "non-built" liquid detergents, by eliminating the inhibiting action exerted by the latter on the bleaching agents.
- In its broadest aspect, the invention relates to liquid detergent and/or bleaching compositions containing at least a low molecular weight tertiary amine oxide, selected from the group consisting of:
- a) trialkanolamine oxides, having formula:
- b) trialkylamine oxides, having formula:
- c) heterocyclic compounds selected from: triethylenediamine N-oxide, triethylenediamine N,N′-dioxide, N-methyl-morpholine N-oxide and N-methyl-piperidine N-oxide.
- For example, if the commonly used triethanolamine (TEA) is replaced in the liquid "non-built" detergents, by the respective N-oxide (TEAO) of formula (III) :
(HO-CH₂-CH₂-)₃-N=O (III)
and obtained bleaching levels are comparable, other conditions being equal, with what is obtained with the liquid "built" detergents and with the powder detergents; the use of said N-oxides and in particular TEAO does not involve particular technological problems and it can be proportioned in the same manner as triethanolamine. As TEAO does not possess the alkalinity of TEA, the neutralization of the acid components of the liquid detergent(fatty acids, alkylbenzenesulphonic acid etc.), which is usually carried out with TEA, can be completed, in the presence of TEAO, with NaOH or, even better, with KOH, without jeopardizing the solution homogeneity; the use of potash is preferred to caustic soda as it allows a higher stability of the liquid detergent compositions at lower temperatures. If amine is not fully replaced by N-oxide, the alkali amount can be advantageously reduced. The composition of the invention may thus additionally contain a low molecular weight tertiary amine. - According to the known technique, N-oxides are obtainable for example by oxidation of the corresponding tertiary amines with hydrogen peroxide. Said oxidation may occur with H₂O₂ either substoichiometric amounts or in excess.
- The synthesis of N-oxides with an excess of hydrogen peroxide results, on conclusion of the reaction, in the presence of residual traces of H₂O₂, the amount thereof being dependent on the utilized excess; for example, if the H₂O₂ excess amounts to 10%, the residue obtained amounts from 0.5 to 1% by weight based on the weight of the reaction mixture. This type of synthesis is less preferred since, unless suitable modifications are made immediate evaporation of the solvent cannot be carried out due to the inherent explosion risk, and/or a direct utilization of the reaction mixture in the preparation of the liquid detergents is not possible. Overcoming those problems may cause serious technological complications in both cases.
- It has been suggested to eliminate the residual H₂O₂ by MnO₂, which is considered an excellent agent for H₂O₂ decomposition but which does not cause N-oxide damage. However, the use of MnO₂ is not possible in practice. It would require careful filtration, which involves a complex operation. However even after a careful filtration, small traces of MnO₂ remain in the N-oxide and by consequence also in the detergents containing it. These residues would be able to exert their decomposition effect also on the bleaching peroxides which are added to the liquid detergents during the washing cycle thereby drastically reducing the performance of the peroxides.
- Other techniques for removing excess H₂O₂, such as eg heating, are not advisable because the N-oxides, in general, decompose at temperatures higher than 60°C. Also metals (for example Fe or Cu), which are known for their degradation action on H₂O₂, are not utilizable, because they are also efficacious in causing the degradation of N-oxides and, in many aspects, are undesirable during the end use of the detergents.
- The applicant has noted that if the hydrogen peroxide amount is maintained below the stoichiometric values, it is possible to obtain a practically H₂O₂-free product, immediately ready for use in the detergents formulations and/or for water evaporation, if a concentration N-oxide is desired. The thus obtained product contains low amounts of converted tertiary amine which do not impair at all the bleaching power and, on the contrary, make the detergent formulability easier. Generally, a H₂O₂ amount ranging from 70% to 99% of the stoichiometric value is recommended in the amine oxidation step.
- The presence of unconverted amine furthermore balances the lower alkalinity of the corresponding N-oxide, and the consequent lower neutralizing power, with respect to the fatty acids, promotes the detergent homogeneity and reduces the amount of alkali necessary to bring the composition to a prefixed pH value.
- The present description, examples included, refers in detail to the use of triethanolamine (TEA), either free or salified (for example with fatty acids or alkylbenzene sulphonic acids), at least partially converted to the corresponding N-oxide (TEAO); the scope of the invention, however, includes other types of low molecular weight tertiary amines and in particular triethylamine, triethylenediamine (PABCO), N-methylmorpholine, N-methylpiperidine etc. The replacements of the amines by the corresponding N-oxides does not adversely affect the storage stability of the detergent even at low temperatures, at high humidity values and over long periods.
- Oxidation of tertiary amines with hydrogen peroxide can be conducted on the amines as such, on the salts thereof with fatty acids (TEA soaps) or with other acid compounds, or also on a liquid detergent which contains the amine, by adding H₂O₂ to said detergent.
- The detergent composition may contain other components conventional for non-built liquid detergents. The detergents are prevailing liquids, that is they may contain suspended solids but have a continuous liquid phase.
- The following examples are given for a merely illustrative purposes, without limiting in any way the scope of the invention.
- N-oxide of triethanolamine (TEAO) was synthesised by reaction between triethanolamine and hydrogen peroxide, according to the scheme :
(HO-CH₂-CH₂)₃-N + H₂O₂→(HO-CH₂-CH₂)₃-N=O + H₂O. Into a 2-neck, 1,000 cm³ flask, equipped with a bulb cooler, 150 g of triethanolamine (TEA), 300 g of water and 150 mg of EDTA (sodium ethylenediaminetetraacetate)were poured; the mixture was heated at 55°C by means of an outer water bath, whereafter 111 g of H₂O₂ at 33.8% by weight, corresponding to about 10% of H₂O₂ in excess, with respect to the stoichiometric value, were gradually introduced (by using a dropping funnel). The addition rate was such as to maintain the temperature below 60°C; on conclusion of the addition, temperature was maintained at 55°C for 90 minutes. Residual H₂O₂ was allowed to spontaneously decompose in the course of a few days, and subsequently the product was dried by evaporation of water (in a rotary evaporator under vacuum) at a temperature not exceeding 40°C. A dry residue of about 165 g, corresponding to a practically quantitative yield, was obtained. - Example 1 was repeated reducing the amount of hydrogen peroxide (at 33.8%) to 103 g, an amount equivalent to about 98% of the stoichiometric value; the final product was analyzed for its H₂O₂ content by means of the paper method (PEROXID-TEST; MERKOQUANT 1011) and the analysis result was negative. No appreciable traces of residual H₂O₂ were found.
- In order to obtain a more concentrated TEAO, without resorting to one or more water evaporation steps, example 1 was repeated, eliminating the 300 g of water (added in example 1 as a reaction solvent) and directly reacting TEA with H₂O₂. In particular: 111g of H₂O₂ at 33.8% by weight were added at 55°C to 150 g of TEA, whereafter the temperature was maintained at 55°C for 2 hours. An aqueous solution at about 67% by weight of TEAO was thus obtained, this value being much higher than the N-oxide concentration obtained in example 1 (29%).
- In order to check the influence of the invention on the bleaching power of the liquid "non-built" detergents, when a bleaching agent is added to the latter, bleaching tests in a commercial-type washing machine REX (mod. RF 224X) were conducted under the following conditions :
washing water: tap water at 16°F hardness;
washing program: at 60°C (maximum suggested temperature for liquid detergents);
laundry load: 3 kg (for each washing) of white and clean cotton cloth + two 10x10 cm cotton test pieces EMPA 114 supplied by EMPA Institute, standard stained with red wine;
detersive dose: 180 g for each washing (average dose recommended by the manufacturers);
bleaching agent dose: 40 g for each washing (average dose recommended by the manufacturers). As a bleaching agent, a commercial product (product I) based on sodium monohydrate perborate (PBS-1) and on activator (TAED = tetraacetyl ethylenediamine)was used. The composition of the bleacher was the following: PBS-1 = 47%; TAEL = 13%;
fillers and minor components = the balance to 100%.
As liquid detergents, a "built" type commercial product (product II), a non-built type commercial product (product III), a laboratory-reproduced formulate having a composition similar to said product III (as to the most important components,TEA included) and an analogous formulate, also reproduced in laboratory, in which TEA had been replaced by N-oxide (TEAO) were compared; the last two formulates are indicated in Table 1 as III/TEA and III/TEAO, respectively.TABLE 1 Components PRODUCT II PRODUCT III III/TEA III/TEAO Anionic surfactants 7.5% 13.7% 14.0% 14.0% Non-ionic surfactants 2.8% 10.7% 11.0% 11.0% Coconut fatty acids - 13.3% 13.0% 13.0% Zeolite 4A 25.1% - - - Ethyl alcohol - 8.0% 10.0% 10.0% Glycerine 7.5% - - - TEA - 10.0% 10.0% (10.0%) TEAO - - - 10.0% Water and minor additives (*) bal.to 100 bal.to 100 bal.to 100 bal.to 100 (*) bal. = balance - A PRODUCT II alone
- B PRODUCT II + bleaching additive
- C PRODUCT III alone
- D PRODUCT III + bleaching additive
- E III/TEA + bleaching additive
- F III/TEAO + bleaching additive.
- a = whiteness of the test-piece washed during the test;
- b = whiteness of the test-piece prior to washing;
- c = whiteness of the not stained test-piece.
- Further bleaching tests were carried out by adding to a non-built liquid detergent a bleaching mixture consisting of sodium perborate monohydrate (PBS-1) and of TAED in a practically stoichiometric ratio (about 48% of PBS-1 and about 52% of TAED). The tests were conducted in a 500 cm³ flask, adding to 250 cm³ of deionized water, brought to 60°C, 7 g of liquid detergent and 0.7 g of the bleaching mixture; finally, two 5x5 cm test-pieces of cotton EMPA 114 stained with red wine (as in ex.4) were introduced. After 1 hour, during which time the test-pieces were kept at a constant temperature of 60°C and under stirring, the test-pieces were rinsed in running water, dried, ironed and subjected to whiteness determination as described in example 4. As detergents, another commercial liquid product (PRODUCT IV), a laboratory-reproduced formulate having a composition similar to PRODUCT IV in the essential components, TEA included (product IV/TEA) and a formulate like the preceding one, where TEA had been replaced by TEAO (formulate IV/TEAO) were compared; the weight percentages of the components are indicated in Table 3.
TABLE 3 Components PRODUCT IV IV/TEA IV/TEAO Linear sodium alkylbenzenesulphonate (LAS) 11.3% 11.3% 11.3% Sodium lauryl sulphate 3.2% 3.2% 3.2% Alcohol (C₁₂-C₁₃), ethoxylated with 7 moles of EO 13.7% 13.7% 13.7% Cocunut fatty acids 7.0% 7.0% 7.0% Ethyl alcohol 9.0% 10.0% 10.0% TEA 5.0% 5.0% - TEAO - - 5.0% Water and minor additives bal.to 100% bal.to 100% bal.to 100% - A PRODUCT IV alone
- B PRODUCT IV + bleaching additive
- C IV/TEA + bleaching additive
- D IV/TEAO + bleaching additive
- Example 4 was repeated with liquid "non-built" formulations, additioned, at the moment of washing, with a commercial bleaching product (PRODUCT I) (and having a basic composition like composition III/TEA of example 4) and with other formulations in which TEA had partially been replaced by TEAO, maintaining the sum TEA+TEAO constant, according to the scheme of Table 5.
TABLE 5 Formulate Weight ratio (TEA : TEAO) A 1 : 0 B 9 : 1 C 7 : 3 D 5 : 5 E 3 : 7 F 1 : 9 G 0 : 1 TABLE 6 Formulate stain removal (%) A + PRODUCT I 34.1 B + PRODUCT I 35.6 C + PRODUCT I 36.4 D + PRODUCT I 46.7 E + PRODUCT I 69.9 F + PRODUCT I 76.3 G + PRODUCT I 78.1 - Formulates A-G of example 6 were subjected to a low temperature stability test, in order to ascertain possible precipitations or demixing as the inner temperature of the detergent decreases. In particular, the formulates were gradually cooled by immersing them into an ice bath, till reaching an inner temperature of +3° C, then they were maintained at such temperature for 30 minutes. The results of the visual observations are reported on Table 7.
TABLE 7 Formulate Appearance A Clear, homogeneous B Clear, homogeneous C Clear, homogeneous D Clear, homogeneous E Clear, homogeneous F Clear, homogeneous G Clear, homogeneous - A series of formulates containing mixtures of TEA and TEAO was prepared on the basis of the IV/TEA described in example 5, bringing all the formulates to a pH value of 8-8.5 with NaOH (where necessary) and maintaining the sum TEA + TEAO constant as in example 7. The detergents were then subjected to a low-temperature storage test, as is described in example 7, maintaining the products at +2°C for 30 minutes. The results are reported on Table 8.
TABLE 8 Formulate TEA/TEAO ratio Formulate appearance A 1 : 0 Clear and homogeneous B 8 : 2 Clear and homogeneous C 6 : 4 Clear and homogeneous D 4 : 6 Clear and homogeneous E 2 : 8 Clear and homogeneous F 0 : 1 Clear and homogeneous - In the preparation of the liquid"non-built" formulates it may be sometimes preferable to utilize, as a start ing material, the TEA salt of the coconut fatty acids (TEA soap) instead of the fatty acids and TEA separately, as usually occurs. This does not represent, in itself, a hindrance to the replacement of TEA by TEAO; in fact, the test described hereinafter proves that also the TEA soap reacts with H₂O₂ to provide TEAO.
Description of the test:
Into a two-neck flask having a 1,000 cm³ volume, equipped with a bulb cooler, there were charged 180 g of TEA soap (from coconut fatty acids), 500 g of H₂O and 100 mg of EDTA; the mass was brought to 55°C and 55 g of H₂O₂ at 33.8% by weight were gradually added without exceeding 60°C; the temperature was then maintained at 55°C for about 90 minutes. The occurred conversion of TEA to TEAO was evidenced by the fact that the solution passed from the limpid state (before reaction) to a cloudy and gelatinous state. That was due to the reduced alkalinity of TEAO in comparison with TEA and to the consequent lower neutralizing activity exerted on the fatty acid, which at the end of the reaction was therefore (partially) present in the water-insoluble free acid form. - The conversion of TEA to TEAO can be carried out also using a liquid (TEA-containing) detergent, by adding to said detergent a suitable H₂O₂ amount. To 100 g of liquid detergent III/TEA, described in example 4, brought to 55°C in a two-neck, 250 cm³ flask, equipped with a bulb cooler, 6.8 cm³ of H₂O₂ at 33.8% by weight were gradually added (without exceeding 60°C); after the addition, the temperature was maintained at 55°C for 150 minutes, whereafter the pH of the detergent was brought to a value of 8-8.5 by means of NaOH. To ascertain that the reaction had really occurred, the detergent so treated (freed from the residual H₂O₂ traces) was utilized to carry out a bleaching test according to the modalities described in example 5, using as a blank a commercial detergent (PRODUCT III). In particular, 5.3 g of detergent, dissolved in 250 cm³ of distilled water (at 60°C), were additioned, under stirring, with 0.7 g of a bleaching mixture, described in example 5, consisting of PBS-1 (48%) and TEAO (52%) and furthermore, immediately after, with two 5x5 cm test-pieces of cotton EMPA 114, stained with red wine. After 60 minutes the two test-pieces were rinsed in running water, air-dried, ironed, and subjected to whiteness determination, as described in example 4; the bleaching values were as follows :
Formulate Removed stains (%) PRODUCT III 57.5 III/TEA + H₂O₂ 80.9 - The liquid non-built detergents containing TEAO instead of TEA can be brought to the pre-established pH value, usually 8-8.5, either with NaOH or with KOH. However, when KOH is used, the formulate acquires an even higher stability at low temperatures. The following test is a proof thereof: the III/TEA composition of example 4 was brought to a pH = 8.2 with KOH and was subjected to the stability test at low temperatures described in example 8; said composition remained limpid and homogeneous up to a temperature of -1°C.
Formulate | Removal of bleachable stains (%) |
A | 29.1 |
B | 72.0 |
C | 48.7 |
D | 50.6 |
E | 48.2 |
F | 78.1 |
Formulate | Dirtiness removal (%) |
A | 51.2 |
B | 52.9 |
C | 49.5 |
D | 80.6 |
Claims (12)
1. Liquid detergent and/or bleaching composition containing a low molecular weight tertiary amine oxide, selected from:
a) trialkanolamine oxides having the formula (I):
where groups R are the same of different and are straight or branched alkylene groups having 1 to 4 carbon atoms;
b) trialkylamine oxides having the formula (II):
where groups R′ are the same or different and are straight or branched alkyl groups having 1 to 4 carbon atoms, and
c) heterocyclic compounds selected from:
triethylenediamine N-oxide, triethylenediamine N,N′-dioxide,N-methyl-morpholine N-oxide and N-methyl-piperidine N-oxide.
triethylenediamine N-oxide, triethylenediamine N,N′-dioxide,N-methyl-morpholine N-oxide and N-methyl-piperidine N-oxide.
3. A composition according to claim 1, in which the tertiary amine oxide is selected from: triethylenediamine N-oxide, triethylenediamine N,N′-dioxide, N-methyl-morpholine N-oxide, N-methyl-piperidine N-oxide and triethylamine N-oxide.
4. A composition according to any of the preceding claims, containing also NaOH or KOH, as a pH regulator.
5. The compositions according to any of the preceding claims, containing also the tertiary aine in its non-oxidized form, the ratio of amine oxide:amine ranging preferably from 70:30 to 99:1 by weight.
6. A composition according to any preceding claim which is substantially free of builder.
7. Use of a low molecular weight tertiary amine oxide as defined in claim 1 optionally in admixture with the corresponding non-oxidised tertiary amine in the preparation of a non-built liquid laundry detergent composition.
8. A process of preparing a composition according to any of claims 1 to 6, characterised in that the selected tertiary amine is converted into the corresponding N-oxide, by reaction with hydrogen peroxide, and that the resulting N-oxide is then added to the other components of the composition.
9. A process of preparing a composition according to any of claims 1 to 6, characterised in that the selected tertiary amine is added in the non-oxidised form to the other components of the composition and it is then converted "in situ" into the corresponding N-oxide by reaction with hydrogen peroxide.
10. The process according to claim 8 or 9, in which the H₂O₂ is used in a substoichiometric amount.
11. The process according to any of claims 8 to 10, characterised in that the oxidation is carried out on the corresponding tertiary amine in salified form, preferably in the form of a salt with a fatty acid or with an alkylbenzenesulphonic acid.
12. A process for forming a laundry wash liquor in which a composition according to any of claims 1 to 6 and a composition containing a bleaching agent are dissolved in water.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1970889 | 1989-03-09 | ||
IT8919708A IT1229564B (en) | 1989-03-09 | 1989-03-09 | DETERGENTS AND / OR WHITENING COMPOSITIONS PREVALENTLY LIQUIDS CONTAINING LOW MOLECULAR WEIGHT TERTIARY AMINES IN N OXIDE FORM. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0387049A2 true EP0387049A2 (en) | 1990-09-12 |
EP0387049A3 EP0387049A3 (en) | 1991-09-04 |
Family
ID=11160559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900302462 Withdrawn EP0387049A3 (en) | 1989-03-09 | 1990-03-08 | Liquid detergent and/or bleaching compositions |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0387049A3 (en) |
JP (1) | JPH02272099A (en) |
CA (1) | CA2011316A1 (en) |
IT (1) | IT1229564B (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5298195A (en) * | 1992-03-09 | 1994-03-29 | Amway Corporation | Liquid dishwashing detergent |
US8871807B2 (en) | 2008-03-28 | 2014-10-28 | Ecolab Usa Inc. | Detergents capable of cleaning, bleaching, sanitizing and/or disinfecting textiles including sulfoperoxycarboxylic acids |
US9242879B2 (en) | 2012-03-30 | 2016-01-26 | Ecolab Usa Inc. | Use of peracetic acid/hydrogen peroxide and peroxide-reducing agents for treatment of drilling fluids, frac fluids, flowback water and disposal water |
US9288992B2 (en) | 2013-03-05 | 2016-03-22 | Ecolab USA, Inc. | Efficient stabilizer in controlling self accelerated decomposition temperature of peroxycarboxylic acid compositions with mineral acids |
WO2016170473A1 (en) * | 2015-04-23 | 2016-10-27 | Chimec S.P.A. | A composition comprising an amine oxide and a tenside and use thereof in petroleum field |
US9585397B2 (en) | 2013-03-05 | 2017-03-07 | Ecolab Usa Inc. | Peroxycarboxylic acid compositions suitable for inline optical or conductivity monitoring |
US9676711B2 (en) | 2008-03-28 | 2017-06-13 | Ecolab Usa Inc. | Sulfoperoxycarboxylic acids, their preparation and methods of use as bleaching and antimicrobial agents |
US9902627B2 (en) | 2011-12-20 | 2018-02-27 | Ecolab Usa Inc. | Stable percarboxylic acid compositions and uses thereof |
US10165774B2 (en) | 2013-03-05 | 2019-01-01 | Ecolab Usa Inc. | Defoamer useful in a peracid composition with anionic surfactants |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2271616B1 (en) | 2008-03-28 | 2020-11-11 | Ecolab USA Inc. | Sulfoperoxycarboxylic acids, their preparation and methods of use as bleaching and antimicrobial agents |
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- 1990-03-07 CA CA002011316A patent/CA2011316A1/en not_active Abandoned
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Cited By (26)
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US5298195A (en) * | 1992-03-09 | 1994-03-29 | Amway Corporation | Liquid dishwashing detergent |
US5443757A (en) * | 1992-03-09 | 1995-08-22 | Amway Corporation | Liquid dishwashing detergent |
US10017720B2 (en) | 2008-03-28 | 2018-07-10 | Ecolab Usa Inc. | Sulfoperoxycarboxylic acids, their preparation and methods of use as bleaching and antimicrobial agents |
US10669512B2 (en) | 2008-03-28 | 2020-06-02 | Ecolab Usa Inc. | Sulfoperoxycarboxylic acids, their preparation and methods of use as bleaching and antimicrobial agents |
US8871807B2 (en) | 2008-03-28 | 2014-10-28 | Ecolab Usa Inc. | Detergents capable of cleaning, bleaching, sanitizing and/or disinfecting textiles including sulfoperoxycarboxylic acids |
US11827867B2 (en) | 2008-03-28 | 2023-11-28 | Ecolab Usa Inc. | Sulfoperoxycarboxylic acids, their preparation and methods of use as bleaching and antimicrobial agents |
US9540598B2 (en) | 2008-03-28 | 2017-01-10 | Ecolab Usa Inc. | Detergents capable of cleaning, bleaching, sanitizing and/or disinfecting textiles including sulfoperoxycarboxylic acids |
US11015151B2 (en) | 2008-03-28 | 2021-05-25 | Ecolab Usa Inc. | Sulfoperoxycarboxylic acids, their preparation and methods of use as bleaching and antimicrobial agents |
US9676711B2 (en) | 2008-03-28 | 2017-06-13 | Ecolab Usa Inc. | Sulfoperoxycarboxylic acids, their preparation and methods of use as bleaching and antimicrobial agents |
US10077415B2 (en) | 2008-03-28 | 2018-09-18 | Ecolab Usa Inc. | Detergents capable of cleaning, bleaching, sanitizing and/or disinfecting textiles including sulfoperoxycarboxylic acids |
US10323218B2 (en) | 2008-03-28 | 2019-06-18 | Ecolab Usa Inc. | Sulfoperoxycarboxylic acids, their preparation and methods of use as bleaching and antimicrobial agents |
US9902627B2 (en) | 2011-12-20 | 2018-02-27 | Ecolab Usa Inc. | Stable percarboxylic acid compositions and uses thereof |
US9242879B2 (en) | 2012-03-30 | 2016-01-26 | Ecolab Usa Inc. | Use of peracetic acid/hydrogen peroxide and peroxide-reducing agents for treatment of drilling fluids, frac fluids, flowback water and disposal water |
US10017403B2 (en) | 2012-03-30 | 2018-07-10 | Ecolab Usa Inc. | Use of peracetic acid/hydrogen peroxide and peroxide-reducing enzymes for treatment of drilling fluids, frac fluids, flowback water and disposal water |
US10023484B2 (en) | 2012-03-30 | 2018-07-17 | Ecolab Usa Inc. | Use of peracetic acid/hydrogen peroxide and peroxide-reducing agents for treatment of drilling fluids, frac fluids, flowback water and disposal water |
US9926214B2 (en) | 2012-03-30 | 2018-03-27 | Ecolab Usa Inc. | Use of peracetic acid/hydrogen peroxide and peroxide-reducing agents for treatment of drilling fluids, frac fluids, flowback water and disposal water |
US11180385B2 (en) | 2012-10-05 | 2021-11-23 | Ecolab USA, Inc. | Stable percarboxylic acid compositions and uses thereof |
US11939241B2 (en) | 2012-10-05 | 2024-03-26 | Ecolab Usa Inc. | Stable percarboxylic acid compositions and uses thereof |
US10165774B2 (en) | 2013-03-05 | 2019-01-01 | Ecolab Usa Inc. | Defoamer useful in a peracid composition with anionic surfactants |
US10893674B2 (en) | 2013-03-05 | 2021-01-19 | Ecolab Usa Inc. | Efficient stabilizer in controlling self accelerated decomposition temperature of peroxycarboxylic acid compositions with mineral acids |
US9585397B2 (en) | 2013-03-05 | 2017-03-07 | Ecolab Usa Inc. | Peroxycarboxylic acid compositions suitable for inline optical or conductivity monitoring |
US11026421B2 (en) | 2013-03-05 | 2021-06-08 | Ecolab Usa Inc. | Efficient stabilizer in controlling self accelerated decomposition temperature of peroxycarboxylic acid compositions with mineral acids |
US11206826B2 (en) | 2013-03-05 | 2021-12-28 | Ecolab Usa Inc. | Defoamer useful in a peracid composition with anionic surfactants |
US9288992B2 (en) | 2013-03-05 | 2016-03-22 | Ecolab USA, Inc. | Efficient stabilizer in controlling self accelerated decomposition temperature of peroxycarboxylic acid compositions with mineral acids |
EA034982B1 (en) * | 2015-04-23 | 2020-04-14 | Кимек С.П.А. | Composition comprising an amine oxide and a tenside and use thereof in petroleum field |
WO2016170473A1 (en) * | 2015-04-23 | 2016-10-27 | Chimec S.P.A. | A composition comprising an amine oxide and a tenside and use thereof in petroleum field |
Also Published As
Publication number | Publication date |
---|---|
IT1229564B (en) | 1991-09-04 |
CA2011316A1 (en) | 1990-09-09 |
JPH02272099A (en) | 1990-11-06 |
EP0387049A3 (en) | 1991-09-04 |
IT8919708A0 (en) | 1989-03-09 |
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