FI64183C - LAOGPIGMENTERAD LOESNINGSMEDELHALTIG MAOLNINGSFAERG BASERAD PA EN PLASTDISPERSION - Google Patents

Description

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Patent and register held · / 44) NihttviksipnonμkuuUuikmiampvm. - 30.06.83

Patent, and registration AmMcm uthgd och utUkrtftM pubticured (32) (33) (31) ^ y4 «« tr «uoikwi-Buglrrf prtorkec 08.08.75

Federal Republic of Germany-Förbundsrepubliken ^ rskland (DE) P 2535373-5 (71) Hoechst Aktiengesellschaft, Postfach 80 03 20, 6230 Frankfurt / Main 80,

Federal Republic of Germany-Förbundsrepubliken Tyskland (DE) (72) Helmut Braun, Hofheim / Taunus, Helmut Rinno, Lorsbach / Taunus,

Werner Stelzel, Bad Soden / Taunus, Federal Republic of Germany - Förbunds-republiken lyskland (DE) (7 * 0 Oy Kolster Ab (5 ^) Low pigmented, solvent-based aqueous plastic dispersion-based paint - L & gpigmenterad lÖsningsmedelhaltig plastdispersion

The problem of wetness of dispersion dyes on flat, non-removable substrates has long been limited to the use of certain dispersion dyes. Slightly pigmented dispersion claims, and among them especially those that dry into glossy or silky films, adhere poorly to flat, non-absorbent substrates if the paintings are rewetted after drying · Wet adhesion is particularly poor for fresh paints that are not yet out of date.

Slightly pigmented dispersion dyes are selected when the soil should be washed. Due to the high binder content of these dyes, a closed, washable film is formed. Likewise, there are glossy or s ilkinh.imme.iden dispers ions in pigment volume concentration of less than 40% and generally about 10-2S%. In addition, for the purpose of improving gloss, durability and open time, and as well consolidating agents, organic solvents are present in a relatively large amount in an amount of about 3 to 20%. Gloss, durability and open time are affected, for example, by polyhydric, water-miscible alcohols having up to 6 carbon atoms, in particular o cy.l ion and propylene glycol 2 641 83 or their monomethyl, monoethyl or monobutyl ethers.

To improve well consolidation, water-soluble solvents such as moniglycol ethers of carboxylic acid and especially esters of carboxylic acids with monoalkyl ethers of glycols or oligoglycols are used to a limited extent. Butyl diglycol acetate is one of the most extensive representatives of this group. The combination of low pigmentation and high solvent content has a particularly negative effect on the wet adhesion of dispersion dyes.

Inadequate wet adhesion results in paint surfaces for washing no longer having this property when applied to smooth, non-absorbent substrates, e.g., old alkyd resin or oil paint surfaces. In damp rooms, such as kitchens or bathrooms, and in many work areas where the formation of condensate must be taken into account, new paint can come off the substrate if sufficient wet adhesion is not provided. Finally, the lack of wet adhesion makes painting work difficult. If, for example, it is intended to paint the plinths and the upper wall halves or the wall and ceiling in different colors, then it may happen that the first painting becomes entangled in a different color due to the use of an inaccurate brush. In principle, this entanglement can be removed with a damp cloth or sponge.

However, due to the lack of wet adhesion, the first painting is easily damaged or comes off completely.

For these reasons, it has indeed been attempted to modify the plastic dispersions so that the dispersion dyes prepared with them have the desired wet speed. Numerous monomers containing specific functional groups (e.g., certain cycloureas, oxazolidines, azomethines, or aziridines) were not proposed as comonomers in emulsion polymerization to improve the wet adhesion of dispersion dyes to a non-absorbent substrate. It was also suggested that, in order to improve wet adhesion, the amino groups be attached to the polymer chains of the emulsion polymer by also using comonomers having specific reactive groups, e.g., oxyran groups or groups having nucleophilically substituents in the group and in the case of monopolymers. after polymerization, the amino groups are attached to the polymer bond by reaction with ammonia or amines.

However, dispersion paint coatings containing polymers containing such amino groups as binders often tend to turn yellow. In addition, wet adhesion is often only slightly improved. Although many of these paints are obtained with low p.ig mentation, the surfaces adhere well enough to a flat non-absorbent substrate, but if organic solvents are added to these paints, the paintings made from them will have almost no wet adhesion.

DT-OS 1 495 706 discloses plastic dispersions in which the polymerization part contains monomers containing keto groups, through which crosslinking with e.g. dicarboxylic acid bis-hydrates is possible. These dispersions are used, for example, in textile finishing to produce wear-resistant layers or in coating techniques to produce solvent-resistant paints.

U.S. Pat. Nos. 3,345,336 and 3,607,834 also disclose similar types of brush paints.

The invention thus relates to a low pigmented, solvent-containing aqueous plastic dispersion-based paint which has good wet adhesion and which contains ordinary emulsifiers, protective colloids and 20-70% solids.

The coatings according to the invention are characterized in that a) a dispersion of a copolymer of an olefinic unsaturated raonomer and an acetic acetic ester copolymerizable with it is used as the plastic dispersion, the vinyl acetic acid ester, allyl acetic acid ester or diester being used as the acetic acid ester,

RO O O

r-ch = c - (? - oac-ch2 -H: -ch3 where R = H or CH3 and A = ~ icIVn ~ ° “or" (CH2-CIVm 'where n is an integer from 1 to 4 and m is an integer from 1 -3, and wherein the amount of acetic acid ester is 0.5 to 10% by weight of the total weight of all the monomers, b) the volume concentration of the pigment in the paint is 7-30% and c) the solvent is an organic solvent in an amount of 3 to 20% by weight of the paint.

Low pigmented dispersion dyes in the context of the invention are dispersion dyes with a pigment volume concentration of 7-30%, preferably 10-20%.

4 64183

Suitable organic solvents are glycols and their derivatives, such as, for example, ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, olicoglycols, such as di- or triglycol, glycol or oligoglycol ethers, such as methyl, ethyl, butyl or propyl. or tri-glycol ether, mono-, di- or triglycol ester, such as mono-, di- or tri-glycol acetate, propionate or butyrate, and (oligo-) glycol half-ether half-ester, such as e.g. methyl, ethyl, propyl or butyl mono-, di- or triglycol acetate, propionate or butyrate and mixtures thereof. Organic solvents are added to the dye up to 3 to 20% by weight, preferably 5 to 15% by weight, taking into account the total weight of the dye.

Aqueous plastic dispersions have solids contents of 20-70%, preferably 40-60%. Otherwise, aqueous plastic dispersions are prepared in a conventional manner according to methods known to those skilled in the art.

The choice of other monomers is not critical. All monomers commonly used in plastic dispersions are contemplated and can be meaningfully combined with one another in accordance with practical requirements. Suitable are, for example, vinyl esters of organic carboxylic acids having a carbon structure of 1 to 30, preferably 1 to 20 carbon atoms, such as vinyl acetate, vinyl propionate, vinyl ester of isononanoic acid and branched monocarboxylic acids having up to 20 carbon atoms; esters of acrylic acid or meta-acrylic acid having 1 to 30, preferably 1 to 20 carbon atoms in the alcohol residue, such as ethyl acrylate, isopropyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate, butyl methacrylate; aromatic or aliphatic ¢ 6-β-unsaturated hydrocarbons such as ethylene, propylene, styrene, vinyltoluene; vinyl halides such as vinyl chloride; unsaturated nitriles such as acrylonitrile; diesters of maleic acid or fumaric acid; such as dibutyl maleinate or dibutyl fumarate, β-β-unsaturated carboxylic acids such as acrylic acid or crotonic acid and their derivatives such as acrylamide or meta-acrylamide.

In selecting suitable monomers or monomer combinations, well-known considerations in the preparation of paint dispersions must be taken into account. Thus, in particular, the formation of polymers which form a film under the desired color drying conditions must be taken into account, and the selection of monomers for the preparation of copolymers must be carried out in such a way that copolymers with keto-containing monomers are always expected according to polymerization parameters. The following are some suitable monomer combinations.

ethyl acrylate / methyl methacrylate / (meta) acrylic acid / - asetetikkahappoallyyliesteri isopropyl acrylate / methyl methacrylate / (meta) acrylic acid / asetetikkahappoallyyliesteri butyl acrylate / methyl methacrylate / (meta) acrylic acid / asetetik-kahappoallyylUesteri isobutyy1iakrylaatti / methyl methacrylate / (meta) acrylic acid / -asetetikkahappoallyyliesteri β-ethylhexyl acrylate / methyl .1 imacacrylate / (meta-) acrylic acid / acetic acid allyl ester ethyl acrylate / styrene / methyl methacrylate / (meta) acrylic acid / acetic acid allyl ester butyl acrylate / styrene / styrene N-acetyl / (acetyl) acrylic acid / acetic acid allyl ester 2-ethylhexyl acrylate / styrene / ethyl acetate * ester vinyl acetate / dibutyl fumarate / acetic acid allyl ester vinyl acetate / isononane appovinyl ester / acetic acid allyl ester vinyl acetate / 2-ethylhexanoic acid vinyl ester / acetic acid allyl ester vinyl i as et aa tt i / versatin "1 (" you set the still acid allyl ester Plastic dispersions are very complex systems. The preparation of dispersions suitable for the purposes of the invention requires the application of experience in the field of emulsion polymerization, even if not specifically described herein. Emulsion polymerization. ignoring rules known to the expert can damage important properties, e.g., water resistance. The dispersions should therefore, taking into account the polymer content, not significantly exceed the commonly used amounts of ionic cinulsifiers of up to 3%, preferably up to 2% or non-ionic emulsifiers of up to 6%, preferably up to M%.

As nonionic emulsifiers, for example, alkyl polyglycol ethers such as lauryl, oleyl or stearyl alcohol or mixtures of ethoxylation products such as coconut fatty alcohol are used; alkylphenol polyglycol ethers such as ethoxylation products of octyl or nonylphenol, diisopropylphenol, triisopropylphenol or di- or tri-tert-butylphenol; or polypropylene oxide ethoxylation products.

anionic emulsifiers are primarily anionic emulsifiers. These may be alkali or ammonium salts of alkyl, aryl or alkylaryl sulfonates, sulphates, phosphates, phosphonates or compounds having other anionic end groups, in which case oligo- or polyethylene oxide units may also be present. and an anionic group. Typical examples are sodium lauryl sulphate, sodium octylphenol glycol ether sulphate, sodium dodecyl benzenesulphonate, sodium lauryl diglycol sulphate, ammonium tri-tert-butylphenol penta or octaglycol sulphate.

Natural products such as acacia, starch, alginates or modified natural products such as methyl, ethyl, hydroxyalkyl or carboxymethylcellulose or synthetic substances such as polyvinyl alcohol, polyvinylpyrrolidone or the like may be used as protective colloids. Preferably, modified cellulose derivatives and synthetic protective colloids can be used.

Oil-soluble and / or preferably water-soluble radical scavengers or Redox systems are used to initiate and proceed with the polymerization. Suitable are, for example, hydrogen peroxide, potassium or ammonium peroxide sulphate, dibenzoyl peroxide, lauryl peroxide, tri-tert-butyl peroxide, bis-azodiisobutyrone triil alone or in combination with reducing components, e.g. compounds.

7 64183

The dispersion pennant en να l mi according to the inventions of a good wet '1 l.u. s t a mi r. e k s i mixed dispers ioih in pi grnentt iliete t tä. Such pigment sludges, also called pigment pastes or pigment pastes, which are suitable for use in low pigment dispersion dyes and in particular gloss dyes, consist, for example, of titanium dioxide uniformly dispersed in water.

They generally contain protective colloids, such as cellulose derivatives, e.g., hydroxyethylcellulose, and dispersants, e.g., salts of poly (methacrylic acid or sodium polyphosphate). and fill i noet Kri fy i Yen edvil J titanium titanium di pi gment; te Oval ru 1 j J ii and an at et s.It is important for comrades that the average pigment i nen h The diameter of the base is close to the lower limit of the wavelength of the light, i.e. about 0.4 to 0.2 .mu.m. For the production of slightly pigmented opaque dyes, it is also possible to use, for example, special large-area silicate pigments, which are rich in binders and are well suited for cleaning. tit greedy can also naturally, contains variegated pigments, but the desired color tone can also be adjusted, by tinting with white pigment finished dispersion dye T

The pigment can be prepared according to known methods, e.g. by dispersing the pigment 11a in a solvent, or in a ball mill or a sand mill or by means of roller mills. When used in gloss paints, the pigment sludge must not contain any significant amounts of pigment aggregates, as these impair the gloss.

Excipients, e.g. emollients, wetting agents, buffers, thickeners, thixotropic agents, anti-corrosion agents, alkyd resins or drying oils can be added either to the dispersion or to the finished dispersion paint. In this case, the plasticizers are not the solvents initially mentioned as film consolidating agents, which have a temporary effect, but compounds, such as dibutyl phthalate, which lower the film-forming temperature and remain in the polymer for a longer time.

64183

Example I

In a 2-liter three-necked flask equipped with a heat bath equipped with a stirrer, reflux condenser, dropping funnel and thermometer, heat a dispersion solution consisting of: 603 parts by weight of water 18 po polyvinyl alcohol with a degree of hydrolysis of 88 mol% and

The viscosity of a 4% aqueous solution at 20 ° C is 18 cP

0> 9 p.o. sodium vinyl sulfonate 6 p.o. sodium dodecylbenzenesulfonate, 0.72 p.o. NaH2PC> 4. 2 i ^ Oita 1.67 p.o. Na2HPO4. 12 H 2 O 1.5 p.o. ammonium peroxide sulfate and 60 p.o. with stirring of vinyl acetate, whereupon the polymerization begins. When the temperature has risen to 70 ° C, a mixture of 540 parts by weight of vinyl acetate and 18 parts by weight of acetic acid allyl ester is added. The addition time is about 3 hours.

After the addition of the monomer is complete, heat for a further 2 hours at the polymerization temperature (70 ° C) with constant stirring and finally cool the mixture.

Example 2

The procedure is similar to that described in Example 1, except that acetic acid allyl ester is not added.

Example 3

In an apparatus as described in Example 1, a dispersion solution consisting of: 607 parts by weight of water and 18 parts by weight of oleyl polyglycol ether containing about 25 parts by weight of ethylene oxide 0.2 parts by weight of sodium dodecylbenzenesulfonate is heated to 12 parts by weight of hydroxyethyl medium cellulose about 400 (molar weight about 100,000) 1.5 parts by weight of sodium acetate, 2.5 parts by weight of ammonium peroxide sulfate and 60 parts by weight of a monomer mixture obtained from a mixture of 450 parts by weight of vinyl acetate, 150 parts by weight of isoric acetic acid vinyl ester and 12 parts by weight. part of a.-etr · 'Ji-.Kag 64183 acid allyl ester to 70 [deg.] C., and at this temperature the remaining monomer mixture (552 parts by weight) is metered in over 3 hours. After the addition, 0.5 part by weight of ammonium peroxide sulphate in 15 parts by weight of water is added and the mixture is further heated for 2 hours. The solids content is about 50 '

Example 4

The procedure is similar to that described in Example 3, but no acetic acid allyl ester is added.

Example 5

In an apparatus such as that described in Example 1, a dispersion solution consisting of: * 618 parts by weight of water in 18 parts by weight of nonylphenol polyglycol ether containing about 30 parts by weight of ethylene oxide 1.5 parts by weight of sodium acetate 12 parts by weight of hydroxyethyl 100,000) 2.5 parts by weight of ammonium peroxide sulphate and 10% (62 parts by weight) of a monomer mixture consisting of 480 parts by weight of vinyl acetate, 120 parts by weight of dibutyl maleate and 18 parts by weight of acetic acid allyl ester at 70 ° C and the remaining monomer mixture is stirred for 3 hours. indoors. After the addition, 0.5 part by weight of ammonium peroxide sulphate in 15 parts by weight of water is added and the mixture is further heated for 2 hours. The solids content is about 50%.

Example 6

The procedure is similar to that described in Example 5, but no acetic acid allyl ester is added.

Example 7

In an apparatus such as that described in Example 1, a dispersion solution containing; 10,641,836,600 parts by weight of water 18 parts by weight of nonylphenol polyglycol ether containing about 30 ethylene oxide units 12 parts by weight of polyvinyl alcohol having a degree of hydrolysis of 88% by volume and a viscosity of 4% of an aqueous solution at 18 ° C at 20 ° C.

0.9 parts by weight of sodium vinyl sulfonate 1.5 parts by weight of sodium acetate.

2.5 parts by weight of ammonium peroxide sulphate 48 parts by weight of vinyl acetate 12 parts by weight of versatin-10-acid vinyl ester and 1.2 parts by weight of acetic acid allyl ester at 70 ° C and at this temperature a mixture of 432 parts by weight of vinyl acetate is metered in over 3 hours, 108 parts by weight of versatin-10-acid vinyl ester and 18 parts by weight of acetic acid allyl ester. After the addition, 0.5 part by weight of ammonium peroxide sulphate in 15 parts by weight of water is added and the mixture is further heated for 2 hours. The solids content is about 50%.

Example 8

The procedure is similar to that described in Example 7, but no acetic acid allyl ester is added.

Example 9

First, a monomer emulsion is prepared having the following composition: 308 parts by weight of water 5 parts by weight of ammonium tri-tert-butylphenol polyglycol ether sulfate containing about 8 units of ethylene oxide 12 parts by weight of meta-acrylic acid 6 parts by weight of acrylic acid parts of 2-ethylhexyl acrylate 300 parts by weight of methyl methacrylate and 12 parts by weight of acetic acid allyl These are mixed with a high-speed mixer until a stable emulsion is obtained.

il 64183

In an apparatus as described in Example 1, a mixture of .306 parts by weight of water, 3 parts by weight of ammonium tri-tert-butylphenol polyglycol ether sulfate containing about 8 parts by weight of ethylene oxide and 60 parts by weight are heated to 81 ° C. monomer emulsion at 81 ° C and a solution of 0.45 parts by weight of ammonium peroxide in 15 parts by weight of water is added. The rest of the monomer emulsion is metered into the loo and the polymerization is completed. The total dosing time is 2 hours, the polymerization temperature and the temperature during post-heating are 81-83 ° C. At the end of the monomer dosing, 15,15 parts by weight of ammonium peroxide sulphate in 5 parts by weight of water are added, the mixture is further heated for 60 minutes and then cooled. The solids content is about 50%.

JExample 10

The procedure is similar to that described in Example 9, but no acetic acid allyl ester is added.

Example 11

First, a monomer emulsion is prepared having the following composition: 310 parts by weight of water 6 parts by weight of lauryl alcohol diglycol ether sulfate sodium salt 12 parts by weight of meta-acrylic acid 6 parts by weight of acrylic acid 300 parts by weight of acetyl acid with a high speed mixer until a stable emulsion is obtained.

In an apparatus as described in Example 1, a mixture of: 12,641,83,303 parts by weight · water 3 parts by weight of sodium urea alcohol of lauryl alcohol diglycol ether sulfate and 62 parts by weight of monomer emulsion at 81 ° C is heated to 81 ° C and a solution of 0 .45 parts by weight of ammonium eroxide disulfate in 15 parts by weight of water. Finally, the remaining monomer emulsion is metered in and the polymerization is terminated. The total dosing time is 2 hours, the polymerization temperature and the temperature during the post-heating are 81-83 ° C. At the end of the monomer addition, 0.15 parts by weight of ammonium peroxide sulphate in 5 parts by weight of water are added, the mixture is further heated for 60 minutes and then cooled. The solids content is about 50%.

'Example 12

The procedure is similar to that described in Example 11, but no acetic acid allyl ester is added.

To test wet adhesion, gloss paints were prepared according to the following manufacturing instructions.

1. 41.0 parts by weight of water

O

15.6 parts by weight of a 3% aqueous solution of Tylose H 2 O.

R

Calgon No. (solid) 0.4 parts by weight

Dispersant PA 30 3.0 parts by weight

Ammonia.25% 1.0 parts by weight Preservative 2.0 parts by weight

Defoamer 3.0 parts by weight

Titanium dioxide 175.0 parts by weight

Corn size 0.2-0.4 .mu.m 1,2-propylene glycol 10.0 parts by weight These are dispersed, and 2. then 710.0 parts by weight of dispersion (with a solids content of $ 50) are added, to which is added 2.0 by weight of 25% ammonia if the pH is not above about 7.

Finally, a mixture of 3-butyl diglycol acetate and 10.0 parts by weight of 1,2-propylene glycol is added slowly with stirring.

With the exception of 1,2-propylene glycol, the liquid or soluble ingredients mentioned in 1. are added to the mixing vessel in the order indicated and the pigment is dispersed with the solvent 13,641,833. Finally, 1,2-propylene glycol is added. A larger amount of this pigment paste (paste) was prepared in order to guarantee the same conditions for mixing with the different dispersions to be tested, e.g. with regard to the dispersion of the pigment.

For the preparation of the individual colors, a corresponding portion of the pigment paste was taken and mixed according to the method mentioned in the above preparation instructions with the dispersions about 1 day old using a slow-running mixer. The solvents mentioned in 3. were then added. After complete processing, the colors were screened.

After a standstill period of 1 day, these gloss dyes were applied to glass sheets and steel sheets previously sprayed with air-drying, pigmented glossy alkyd resin varnish and allowed to age for 24 hours at 100 ° C after drying.

. A film puller with a slit height of 200 was used. After drying the gloss dyes for 24 hours, they were tested for wet adhesion according to both methods described above.

1. Consumption?

In a mechanical wear testing machine, such as that described in German patent application 2,262,956, which is similar to the Gardner-Washability and Abrasion Machine and has a travel distance of about 1.20 m, the manufactured glass sheets are placed perpendicular to the brush. · Per! Due to the length of the travel, about 15 colors can be examined simultaneously in a single co-s. It uses a brush made of pig bristles, which is moistened with distilled water at the beginning of the test. Distilled water is also dripped onto the brush travel during the test, so that the trace of the brush is always covered by the water film. In the case of insufficient adhesion of Mäx®, the dispersion color detaches from the substrate after a few brushes and tears off at the boundary of the moistened and dry film. The longer the brush travels until the film comes off, the better the wet adhesion. Optimal wet adhesion is considered to be when, after 300 brushes (1 brush is a round trip), the film has not yet come off in the moistened brush pattern.

ι · * 64183 2. Condensation test A rectangular thermostat was used, half-filled with water at 50 ° C and with a fan installed above the water level in the gas space. The top opening is covered with the manufactured steel plates - with the test surface facing downwards - and then closed. The thermostat is located in a room maintained at 23 ° C. Due to the temperature difference, water vapor condenses below the plate and affects the gloss films. In each case 15 min. after the exposure time, the plates are removed and evaluated.

Insufficient wet adhesion manifests itself in the formation of bubbles between the dispersion paint and the alkyd resin varnish and in the easy peeling off of the film, e.g. with the fingertip. In the case of good wet adhesion, the film is still without bubbles after 4 hours and is not peeling off.

Table 1. shows the test results.

Example Consumption test Durability in the condensate double brush pull test _____ number _ 1> 3000> 4 hours 2+ 30 10 minutes 3> 3000> -4 hours 4+ 2 50 10 minutes 5> 3000> 4 hours 6+ 120 15 minutes 7> 3000> 4 hours 8+ 50 <15 minutes 9> 3000> 4 hours 10+ 70 <15 minutes 11> 3000> 4 hours 12+ 110 <15 minutes + non-inventive comparative examples.

is 6,418 3

Example 13.

The procedure of Example 1 is repeated except that 2- (acetoacetyloxy) ethyl acrylate is used instead of acetic acid allyl ester.

Example 14.

The procedure of Example 3 is repeated except that 2- (acetoacetyloxy) ethyl methacrylate is used instead of acetic acid allyl ester.

• Example 15.

The procedure of Example 7 is repeated, except that 2- (acetoacetyloxy) propyl crotonate is used instead of acetic acid allyl ester.

Example 16.

The procedure of Example 9 is repeated except that 2- (acetoacetyloxy) propyl acrylate is used instead of acetic acid allyl ester.

Example 17.

The procedure of Example 11 is repeated, except that 2- (acetoacetyloxy) propyl methacrylate is used instead of acetic acid allyl ester.

Example 18.

The procedure of Example 3 is repeated, except that 12 parts of acetoacetylallyl ester are replaced by 18 parts of 2- (acetoacetyloxy) ethyl crotonate, the amount of water used being 613 parts.

testing Results

In the same manner as in Example 12, gloss dyes were prepared from the dispersions of Examples 13 to 18 and tested. The test results are shown in Table 2.

16,641 83

Table 2

Example Consumption test: Durability in the double-brush tensile condensation _number_test_ test 13> 3000> 4 hours 14> 3000> 4 15> 3000> 4 16> 3000> 4 17> 3000> 4 18> 3000> 4

Claims (2)

1, Low pigmented, solvent-containing water-based irisovis dispersion-based coating having good wet adhesion and containing complete emulsifiers, protective colloids and 20-70% solids, characterized in that a) an unsaturated olefinic unsaturated plastic dispersion is used. a dispersion of a copolymer of an acetic acetic ester copolymerizable with it, wherein the acetic acetic ester is a vinyl acetic acid ester, an allyl acetic acid ester or a diester of the general formula, , 2 3 where R * = H or CH3 and A - ~ <CH2 * n "°" or * "(Cli2" CH2 ~ ° ~ 'where n is an integer from 1 to 4 and m is an integer from 1 to 3, and wherein the acetic acid ester the amount is 0.5 to 10% by weight of the total weight of all the monomers, b) the volume concentration of the pigment in the paint is 7-30% and c) an organic solvent is used as the solvent in an amount of 3 to 20% by weight of the paint. Brush color according to Claim 1, characterized in that the proportion of acetic acid ester in the polymerate is from 2 to 5% by weight.