DE1945110A1 - Mixture and method for regulating the evaporation of moisture in plants, fruits, underground roots, stems or the like. - Google Patents

Description

The invention relates to a mixture that is used to regulate ^! ....... the evaporation is suitable, and relates in particular to the use of an emulsion of a homo- or copolymer to achieve an effective evaporation control of moisture contained in plants, fruits, underground roots, trunks or the like , which by emulsion polymerization of at least one the following monomers is produced: lower fatty acid vinyl esters, acrylic acid esters and vinyl pyrrolidone.

It is often necessary to suppress the evaporation of moisture contained in plants, fruits, underground roots, trunks, or the like.

For this purpose, various methods such as covering the object with paper or a plastic film and immersing it in suitable fillers have been recommended and have been practically used for many years. However, these methods require expensive materials, high labor costs for the job and additional transportation costs for shipping the fillers. At-

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on the other hand, paraffin emulsions have already been used for this purpose or some paints have been suggested, but if the topcoat is thin, durability will be poor and, if the coating is thick, the withering of the plants is rather hastened, as is the breathing of the plants is prevented by the emulsion or paint coating. Furthermore, emulsions or emulsions customary for this purpose were Paints are unusable at low temperatures because their MET (minimum film-forming temperature) is relatively high

It is therefore a primary object of the invention to provide an improved To create a mixture with which the evaporation contained in plants, fruits, underground roots, trunks or the like Can suppress moisture effectively, and that against aging, weathering, water, sunlight, friction and the like is stable 'and also has the property of adhering firmly to the respective objects, even at low temperatures to form effective films on the objects.

Another object of the invention is to provide a mixture for regulation to create evaporation, with which evaporation occurs in plants, fruits, underground roots, trunks or the like contained moisture can effectively suppress without preventing the coated object from breathing.

Another object of the invention is to provide a mixture for regulation of evaporation to create evaporation in plants, fruits, underground roots, stems or

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The like contained moisture can effectively suppress and the plants and fruits coated therewith Gives shine and good looks «

The above invention is based on the discovery that a aqueous emulsion obtained by emulsion polymerization of at least one lower fatty acid vinyl and / or at least Acrylic acid ester and / or at least one vinyl pyrrolidone is a very effective means of suppressing evaporation in plants, fruits, underground Moisture contained in roots, stems or the like. Accordingly, the invention provides a new mixture for evaporation control available, the emulsion polymerization of at least one lower fatty acid vinyl and / or at least one acrylic acid ester and / or at least a vinylpyrrolidone is made "

Preferably, for the purposes of the invention, the acrylic acid used is first methyl acrylate, ethyl-r-propyl-butyl-j -heptyl-T -hexyl or -octyl ester and the like used As a lower fatty acid vinyl ester, JBr are used for the purposes of Invention preferably vinyl acetate, propionate, butyrate and Like. Used.

The evaporation control mixtures of the invention can according to any of the well known emulsion polymerization processes be produced, e.g. B. with the help of an emulsion polymerization which one the monomers continuously or

discontinuously in the presence of surface-active agents or protective colloids at a temperature of 40 to 80 ° C un-

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using a water-soluble polymerization catalyst in water.

To apply the mixtures of the invention to the plants, Fruits, underground roots, trunks or the like, preferably a dipping or spraying process is used » A film that is sufficiently durable and has adequate air permeability can be obtained by applying an emulsion, which contains about 5 to 10 wt .- ^ resin component.

Possess the mixtures according to the invention for regulating evaporation the following special properties and advantages:

1) The emulsions adhere well to plants, Fruits, underground roots, trunks, or the like. »Accordingly, the film formed upon application does not become light removed and repeated treatments and not required.

2) The film formed during application has a high level of weathering, Water, sunlight and abrasion resistance.

3) The film formed during application is permeable to air.

4) The emulsion mixtures have excellent film-forming properties at low temperatures. Therefore you can get good results even in cold weather with a temperature as low as O ^{0 C.}

5) The emulsions are for plants, fruits, underground worms

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zein, stems and the like hardly poisonous.

6) The film formed from the emulsions gives the coated plants, fruits and the like shiny and good appearance.

7) The / ^^ feiße coloring which occurs immediately after the application of the Emulsions appearing on the coated plants, fruits, underground roots, trunks or the like is useful in that it enables one to distinguish which objects have already been treated and which have not. The milky white color or the upper eye becomes colorless over time.

The invention is explained in more detail using the following examples, which do not represent any limitation.

example 1

The evaporation protection effect of the mixtures of the invention is with compared to that of the conventional method of preventing wilting or withering of young crytomerias (two years old). The results listed in Table I were for one in the period from November 10, 1967 to April 25, 1968 a 5-hectare orytomeric jungle near Shibukawa, Gunma Prefecture, Japan.

In particular, it was found that when using the mixture according to the invention for regulating evaporation, the number of wilted or withered trees compared to those at the an.

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Reversal of the conventional method yielded results to about 1/3 has been reduced.

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Table I.

Treatment or mixture Applied treatment Withdrawal in #

mixed quantity number of d. withers. Trees

(ml / tree) <number of d. treats * trees *

No treatment - 100

Cover with earth '· »52

Paraffin emulsion 300 63

Paraffin emulsion A-OO. 61 emulsion

ο polyvinyl propionate ...... 5 parts by weight

ο polyvinyl alcohol .. * 0.1 ""

«Β Waseer ·. ·. · 95" "100 20

«* Emulsion from '

^ · Vinyl Acetate - Ethyl Acrylate -

_ * Copolymer (5j10) .... 10 parts by weight

oo nonionic wetting agent 0.1 "" λπλ * sc

in water .. ". · _{# -} ... 190""100 25

Emulsion

Vinyl pyrrolidone - vinyl propionate -

Copolymer (3: 7) 15 parts by weight ^ _n * ^ c

Water 185 ⁿ "" ^{TO 25}

The emulsions are applied to the trees by means of a spraying process.

Example 2

Summer oranges were harvested from Shimizu, Shizuoka Prefecture, Japan with a diameter of 9 to 11 cm coated with various emulsions and left to stand for 50 days at room temperature. The results obtained (three oranges were tested in the same way for each experiment) are in compiled in Table II

The results show that all oranges * with a Mixture were treated, remained fresh even after 50 days of storage and their good taste had kept

Table H.

Number of ver-amalgamation bad oranges

No treatment . . 3

Faraffin emulsion 2

Emulsion

Polyvinyl acetate .. · .. »··· 5 parts by weight of di (2-ethyikexyl) ophthalate 0.5" ⁿ _n

Polyvinyl alcohol ........ 0.1 "".

Water ·. «, ... · .... 95" "

Polyvinyl propionate emulsion ..... · 5 parts by weight

Polyvinyl alcohol 0.1 "" 0

Water .·. 95 ⁿⁿ

Polyvinyl acetate emulsion - polyvinyl » propionate - copolymer

(50: 50 ^) 10 Gow.-parts

Polyvinyl alcohol ........ 0.2 "" 0

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Mixture of bad urangqn Emulsion from, Polyvinyl acetate - polyvinyl

propionate copolymer

Polyvinyl alcohol .. * .. •. • 0.2 ^β • 0 Emulsion aue

Vinyl acetate - ethyl acrylate Copolymer (30:50) · «·· 10 Öev · parts non-ionic wetting agent 0.1 "* 0

17Ü

Emulsion

Vinyl acetate - ethyl acrylate copolymer <5z10) ♦ .- · non-ionic wetting agent 0.1 ■ Water .. · »· .. 190 * ·

Emulsion

Ethyl aorylate - vinyl propio- * nat - copolymer (5i20) 10 parts by weight niclit ^ ionic wetting agent 0.1 "» Water ...... · .—. 190 * ■

Emulsion

Ethylacrylafc - vinyl propionate copolymer (5 »4-5) 10 parts by weight Polyvinyl alcohol ········ 0.2 "-" 0

WasBer ...... · .. ♦ · ....... 190 * "

Emulsion

Vinyl pyrrolidone - vinyl acetate copolymer

(3 ^ 7) «···« ·········. »··· 15 Gev * -part« _n water 185 · »■ °

Emulsion

Vinylpyrrolidone - vinyl acetate - copolymer (2; 8) 15 parts by weight _Λ water ...... · ... · ....... 185 · · °

Emulsion

Vinylpyrrolidone - vinyl propionate copolymers «7) 15 parts by weight ₀ water. ·.» ... ·. · ... «» «· .. 185""

Emulsion

Vinylpyrrolidone - vinyl propionate - copolymer (2s8) 15 wt .- ^ eil · _ft water 185 * "

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Claims (2)

New patent claims 1. Mixture, to regulate the evaporation of moisture in plants, Fruits, underground roots, trunks or the like, consisting of an emulsion obtained by emulsion polymerization of at least one lower fatty acid vinyl and / or at least one acrylic acid ester and / or at least one vinyl pyrrolidone is produced. 2. Use of an aqueous emulsion polymerization of at least one lower fatty acid vinyl and / or at least an acrylic acid ester and / or at least one vinylpyrrolidone produced emulsion for regulating the evaporation of moisture in plants, fruits, underground roots, trunks or the like by applying the emulsion to the to be treated Object. 009817/1853