CN100523373C - Reinforcing agent for paper and its preparation method and application - Google Patents
Reinforcing agent for paper and its preparation method and application Download PDFInfo
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- CN100523373C CN100523373C CNB2007100465969A CN200710046596A CN100523373C CN 100523373 C CN100523373 C CN 100523373C CN B2007100465969 A CNB2007100465969 A CN B2007100465969A CN 200710046596 A CN200710046596 A CN 200710046596A CN 100523373 C CN100523373 C CN 100523373C
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Abstract
The invention provides a paper adopting intensifier and the producing method and application. The producing method comprises the following steps: (1) mixing the guar gum powder with the solvent and the surface promoting agent to obtain the mixed liquor; (2) adding the activator into the mixed liquor of step(1), inletting nitrogen and heating up to 35 to 90 DEG C, and basification reacting 0.5 to 2.0 hours; (3) cooling, inletting nitrogen to drive the air away, adding etherifying agent to react with the temperature of 40 to 90 DEG C and with the time of 2 to 5 hours; (4) cooling to 25 to 40 DEG C, adding neutralizing agent to make the reactant pH value be 6 to 8, then connecting the paper adopting intensifier from the reacted outcome. The invention can rapidly dissolve into clear liquor when encountering water in room temperature; one percent water liquor does not appear deposit, flocculation, delamination and mould when being put for more than 10 days in room temperature; the viscosity coefficient holds the line basically and the intensifying effect can not be influenced so as to enlarge the applicable scope of the product of the invention.
Description
Technical field
The present invention relates to a kind of preparation method and the application aspect papermaking thereof of intensifier for paper.
Background technology
At present paper industry widespread usage remodeling starch and cationic polyacrylamide be as reinforcing agent, but starch source differs, and of a great variety, straight chain and side chain ratio are different, therefore have a strong impact on its modified product quality of stability, have limited it and have applied.Wet end adjuvant is selected in many paper mills for use for this reason, causes paper cost to increase.On the other hand, cationic polyacrylamide is easily biological-degradable not, and residual monomer has certain toxicity, is restricted in the application of paper for daily use and high-grade paper.And the plain boiled water reuse of cation polyacrylamide causes the positive electricity enrichment, influences formation of sheet and the system of manufacturing paper with pulp and gets stable.
Guar gum is a kind of natural galactomannan gum, extracts to obtain from the endosperm of the guar seed that originates in ground such as India, Pakistan.The guar gum main chain is that the unit is formed by connecting by (1,4) β-D mannose, and side chain is made up of single α-D galactolipin and is joined with (1,6) key and main chain.Its distinctive molecular structure and physicochemical characteristics make it become a kind of very potential novel environment friendly paper making additive.Natural guar gum can improve paper strength during as paper making additive, reduces greyness and forms and also improve paper formation, but easily cause the drainage difficulty, thereby increased drying load.In recent years, owing to plantation, harvesting, purifying, the pulverizing realization industrialization of guar gum, the price advantage of its raw material is day by day obvious.And the outstanding biodegradability of guar gum has been alleviated problem of environmental pollution, meets environmental protection production theory.
At present, being based on application purpose about recent Progress in Modification of Guar Gum carries out, the guar gum of modification is mainly at household chemicals, aspects such as oil field chemical, mining, papermaking, obtained the approval of large-scale market at home, as U.S. Pat 3326890, US3350186, US3483121 discloses the preparation technology of nonionic guar gum.But the subject matter that these patented technologies exist is the synthesis step complexity, and the product substitution value is lower.
Summary of the invention
The objective of the invention is provides a kind of intensifier for paper and preparation method thereof in order to solve above-mentioned the deficiencies in the prior art part.
Another object of the present invention is to provide the application of intensifier for paper in paper of method for preparing.
The preparation method of intensifier for paper of the present invention comprises the steps:
(1) the former powder of guar gum is mixed with solvent and surfactant, obtain mixed solution;
(2) catalyst is added the mixed solution of step (1), feed nitrogen, be warming up to 35-90 ℃, quaternization 0.5-2.0 hour;
(3) be cooled to?～25 ℃, logical nitrogen is driven away air, adds etherifying agent and reacts, and reaction temperature is 40-90 ℃, and the time is 2-5 hour;
(4) system is cooled to 25-40 ℃, adds neutralizer and makes reactant pH value be 6-8, collects said intensifier for paper then from product.
Said solvent is selected from more than one in methyl alcohol, ethanol, isopropyl alcohol or the tert-butyl alcohol;
Said surfactant is more than one of hexadecyltrimethylammonium chloride, octadecyl trimethyl ammonium chloride, Dodecyl trimethyl ammonium chloride or myristyl dimethyl benzyl ammonium chloride;
Said catalyst is more than one of NaOH, potassium hydroxide, diethanol amine, monoethanolamine, triethanolamine or diethylamine;
Said etherifying agent is more than one of oxirane, expoxy propane, epoxy butane, epoxychloropropane or chlorethanol;
Said neutralizer is more than one of hydrochloric acid, glacial acetic acid, citric acid or fumaric acid;
The raw materials in part by weight prescription is as follows:
The former powder 100-200 of guar gum part, solvent 200-400 part, surfactant 4-10 part,
Catalyst 25-43 part, etherifying agent 60-100 part.
The intensifier for paper of the present invention's preparation is the nonionic guar gum, meet water in room temperature and can be dissolved into settled solution rapidly, do not need the high temperature gelatinization, simple to operate, be beneficial to and cut down the consumption of energy and reduce equipment investment, product antibiont degradation capability of the present invention is compared with the former powder of guar gum, and 1% aqueous solution is placed in room temperature precipitation, flocculation, layering and phenomenon such as mouldy can not occur more than 10 days, viscosity remains unchanged substantially, and it is unaffected to strengthen effect.Can adjust its consumption according to the addition of different component, beating degree and other auxiliary agent of paper pulp, thereby the performance synergistic function enlarges the scope of application of product of the present invention, as: speciality paper, cigarette paper and drawing paper.
The specific embodiment
Embodiment 1
(moisture is 11.5% to the not purified former powder of guar gum of 100 grams, weight), be distributed to 200 gram ethanol, in the mixed liquor of 22 gram water and 4 gram surfactants, join in the four-hole boiling flask of 1000ml, logical nitrogen, stirred ten minutes under the room temperature, add 25 gram sodium hydrate aqueous solutions (the sodium hydroxide solution weight concentration is 32%), in water-bath, join 35 ℃ of alkalization then after 2 hours, be cooled to 30 ℃ after, material is transferred in the reactor of 1000ml, fill nitrogen and drive oxygen, add oxirane 60 grams, reaction temperature rises to 50 ℃ of reactions 5 hours from room temperature, cooling is with about glacial acetic acid adjust pH to 7.0.Material is through suction filtration, usefulness ethanol/water mixed liquor (ethanol: water=9:1, volume) wash once, suction filtration, with absolute ethanol washing once, washing, suction filtration, filter cake are under 70 ℃ of conditions dry 4 hours in vacuum, temperature, and the solid after the oven dry is crushed to 100 orders.
Make nonionic guar gum at last, weight be 130 the gram (moisture is 8.84%), outward appearance is a pale yellow powder shape material, its aqueous solution of 1% is little yellow transparent viscosity solution, viscosity be 2500cps (25 ℃, the 4# rotor, 60rpm).
Embodiment 2
(moisture is 11.5% to the not purified former powder of guar gum of 200 grams, weight), be distributed to 340 gram isopropyl alcohols, in the mixed liquor of 43 gram grams and 8 gram surfactants, join in the four-hole boiling flask of 1000ml, logical nitrogen, stirred ten minutes under the room temperature, add 30 gram potassium hydroxide aqueous solutions (potassium hydroxide solution concentration is 32%), in water-bath, join 45 ℃ of alkalization then after 1 hour, be cooled to 30 ℃ after, material is transferred in the reactor of 1000ml, fill nitrogen and drive oxygen, add expoxy propane 75 grams, reaction temperature rises to 60 ℃ of reactions 3 hours from room temperature, cooling is transferred about pH value to 7.0 with hydrochloric acid.Material is through suction filtration, with ethanol/water mixed liquor (ethanol: water=9:1, volume) washing once, and suction filtration, with absolute ethanol washing once, suction filtration, filter cake is under 70 ℃ of conditions dry 4 hours in vacuum, temperature, and the solid after the oven dry is crushed to 100 orders.
Make nonionic guar gum at last, weight be 235 the gram (moisture is 9.48%), outward appearance is a pale yellow powder shape material, its aqueous solution of 1% is little yellow transparent viscosity solution, viscosity be 2800cps (25 ℃, the 4# rotor, 60rpm).
Embodiment 3
(moisture is 11.5% to the not purified former powder of guar gum of 200 grams, weight), be distributed to 340 gram methyl alcohol, in the mixed liquor of 43 gram water and 9 gram surfactants, join in the four-hole boiling flask of 1000ml, logical nitrogen, stirred ten minutes under the room temperature, add 38 gram sodium hydrate aqueous solutions (the sodium hydroxide solution weight concentration is 32%), in water-bath, join 45 ℃ of alkalization then after 1.5 hours, be cooled to 30 ℃ after, material is transferred in the reactor of 1000ml, fill nitrogen and drive oxygen, add expoxy propane 90 grams, reaction temperature rises to 75 ℃ of reactions 2.5 hours from room temperature, cooling is transferred about pH value to 7.0 with citric acid.Material through suction filtration, with ethanol/water mixed liquor (ethanol: water=9:1, volume) washing once, suction filtration, with absolute ethanol washing once, filter cake is under 70 ℃ of conditions dry 4 hours in vacuum, temperature, and the solid after the oven dry is crushed to 100 orders.
Make nonionic guar gum at last, weight be 240 the gram (moisture is 9.01%), outward appearance is a pale yellow powder shape material, its aqueous solution of 1% is little yellow transparent viscosity solution, viscosity be 2750cps (25 ℃, the 4# rotor, 60rpm).
Embodiment 4
(moisture is 11.5% to the not purified former powder of guar gum of 200 grams, weight), be distributed to 400 gram ethanol, in the mixed liquor of 60 gram water and 10 gram surfactants, join in the four-hole boiling flask of 1000ml, logical nitrogen, stirred ten minutes under the room temperature, add 43 gram sodium hydrate aqueous solutions (the sodium hydroxide solution weight concentration is 32%), in water-bath, join 80 ℃ of alkalization then after 0.5 hour, be cooled to 30 ℃ after, material is transferred in the reactor of 1000ml, fill nitrogen and drive oxygen, add chlorethanol 100 grams, reaction temperature rises to 80 ℃ of reactions 2 hours from room temperature, cooling is transferred about pH value to 7.0 with glacial acetic acid.Material through suction filtration, with ethanol/water mixed liquor (ethanol: water=9:1, volume) washing once, suction filtration, with absolute ethanol washing once, filter cake is under 70 ℃ of conditions dry 4 hours in vacuum, temperature, and the solid after the oven dry is crushed to 100 orders,
Make nonionic guar gum at last, weight be 232 the gram (moisture is 8.92%), outward appearance is a pale yellow powder shape material, its aqueous solution of 1% is little yellow transparent viscosity solution, viscosity be 3000cps (25 ℃, the 4# rotor, 60rpm).
Embodiment 5
By the quantitative 50g/m of design
2Copy sheet, the reinforcing agent addition is 5 kilograms of/ton paper (doing/dried paper), fine particle calcium carbonate adds fills out 30% (doing/dried paper), take by weighing an amount of paper pulp, wherein the needle slurry: broad-leaved slurry=65:35,40.6 ° of SR of beating degree, addition by design added the reinforcing agent stirring after 1 minute, add fine particle calcium carbonate and stirred 1 minute, copy the sheet shaping on the sheet machine, dry back each index of 0.3Mpa soft calendaring one-time detection pattern square copying.
Table 2 adds the handsheet physical index of sample
Blank sample does not add reinforcing agent, and the contrast sample is for adding the intensifier for paper of patent CN1667187A disclosed method preparation.
From experimental result, the application performance of the intensifier for paper of the present invention's preparation is compared with contrast sample reinforcing agent, and it is better to strengthen effect.
Claims (5)
1. the preparation method of an intensifier for paper is characterized in that, comprises the steps:
(1) the former powder of guar gum is mixed with solvent and surfactant, obtain mixed solution;
(2) catalyst is added the mixed solution of step (1), feed nitrogen, be warming up to 35-90 ℃, quaternization 0.5-2.0 hour;
(3) cooling, logical nitrogen is driven away air, adds etherifying agent and reacts, and reaction temperature is 40-90 ℃, and the time is 2-5 hour;
(4) system is cooled to 25-40 ℃, adds neutralizer and makes reactant pH value be 6-8, collects said intensifier for paper then from product;
Described surfactant is more than one of hexadecyltrimethylammonium chloride, octadecyl trimethyl ammonium chloride, Dodecyl trimethyl ammonium chloride or myristyl dimethyl benzyl ammonium chloride;
Described catalyst is more than one of NaOH, potassium hydroxide, diethanol amine, monoethanolamine, triethanolamine or diethylamine;
Said etherifying agent is more than one of oxirane, expoxy propane, epoxy butane, epoxychloropropane or chlorethanol;
The raw materials in part by weight prescription is as follows: the former powder 100-200 of guar gum part, solvent 200-400 part, surfactant 4-10 part, catalyst 25-43 part, etherifying agent 60-100 part.
2. method according to claim 1 is characterized in that said solvent is selected from more than one in methyl alcohol, ethanol, isopropyl alcohol or the tert-butyl alcohol.
3. method according to claim 1 is characterized in that, said neutralizer is more than one of hydrochloric acid, glacial acetic acid, citric acid or fumaric acid.
4. the intensifier for paper of each described method preparation of claim 1～3.
5. the application of the described intensifier for paper of claim 4 in papermaking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100465969A CN100523373C (en) | 2007-09-28 | 2007-09-28 | Reinforcing agent for paper and its preparation method and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100465969A CN100523373C (en) | 2007-09-28 | 2007-09-28 | Reinforcing agent for paper and its preparation method and application |
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| CN101126215A CN101126215A (en) | 2008-02-20 |
| CN100523373C true CN100523373C (en) | 2009-08-05 |
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| CNB2007100465969A Active CN100523373C (en) | 2007-09-28 | 2007-09-28 | Reinforcing agent for paper and its preparation method and application |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363637A (en) * | 2011-06-30 | 2012-02-29 | 上海东升新材料有限公司 | Preparation method of thickening water-retaining agent for building dry-mixed mortar and application thereof |
| CN103524633A (en) * | 2013-09-28 | 2014-01-22 | 昆山市周市溴化锂溶液厂 | Method for preparing high-viscosity modified guar gum |
| CN105566508A (en) * | 2016-01-25 | 2016-05-11 | 江苏金和万方新材料科技有限公司 | Preparation method of hydroxyethyl guar gum for cigarette paper |
| CN106436457B (en) * | 2016-09-24 | 2020-02-28 | 北京林业大学 | Paper reinforcing agent prepared by taking polysaccharide as raw material and preparation method thereof |
| CN106320077B (en) * | 2016-09-24 | 2020-05-15 | 北京林业大学 | Paper reinforcing agent and production method thereof |
| CN106283847B (en) * | 2016-09-24 | 2020-02-18 | 北京林业大学 | Paper reinforcing agent and production method thereof |
| CN110904722B (en) * | 2019-11-25 | 2022-03-11 | 浙江华丰纸业科技有限公司 | Preparation process for improving rib definition |
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2007
- 2007-09-28 CN CNB2007100465969A patent/CN100523373C/en active Active
Non-Patent Citations (2)
| Title |
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| 瓜尔胶及其衍生物的在造纸行业的应用. 刘一山.西南造纸，第35卷第2期. 2006 |
| 瓜尔胶及其衍生物的在造纸行业的应用. 刘一山.西南造纸，第35卷第2期. 2006 * |
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| CN101126215A (en) | 2008-02-20 |
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Denomination of invention: Paper reinforcing agent and its preparation method and Application Effective date of registration: 20220715 Granted publication date: 20090805 Pledgee: Bank of Hangzhou Limited by Share Ltd. Shanghai branch Pledgor: SHANGHAI DONGSHENG NEW MATERIALS Co.,Ltd. Registration number: Y2022310000128 |
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Date of cancellation: 20230718 Granted publication date: 20090805 Pledgee: Bank of Hangzhou Limited by Share Ltd. Shanghai branch Pledgor: SHANGHAI DONGSHENG NEW MATERIALS Co.,Ltd. Registration number: Y2022310000128 |