Fatty acid anhydride-containing powdered dispersion compositions

FIELD: chemistry.

SUBSTANCE: invention relates to a polymer powdered composition re-dispersed in water. The powdered polymer composition re-dispersed in water contains one or more anhydrides of fatty acids in amount of 0.1-70 wt % per total weight of the powdered polymer composition. The method of preparing said powdered composition involves drying an aqueous polymer dispersion and a fatty acid anhydride or only the said anhydride in the presence of a protective colloid if necessary. Use of the said powdered composition combined with hydraulically setting binding materials in different areas of the construction industry. The invention is developed in subclaims.

EFFECT: enhancement of hydrophobic properties.

10 cl, 6 ex, 1 tbl

 

The present invention relates to redispersible in water containing anhydrides of fatty acids polymer powder compositions and to their use in hydraulically setting systems.

Polymers based on vinyl ether, vinyl chloride, monomer (meth)acrylate, styrene, butadiene and ethylene, primarily in the form of their aqueous dispersions or holder of polymer powders in water, are the most diverse applications, such as coatings or adhesives for a variety of foundations. Such dispersion powders in their application for the waterproofing of mineral masses usually contain esters of fatty acids and/or silanes.

In EP 1193287 A2 describes the use of containing at least one ether carboxylic acid powder formulations for waterproofing mortars (mass). From WO 02/30846 A1 are known to be used for hydrophobization pellets containing fatty acids or their esters, optionally in combination with organopolysiloxane deposited on particles-carriers. Redispersible in water water supplements containing fatty acids or their esters, are described in WO 2004/103928 A1.

When using free fatty acids often there is the danger of premature thickening mineral mass, further processing in which the result becomes impossible. Similar opannotate and using the corresponding salts of fatty acids with alkali or alkaline earth metals. To avoid these problems instead of free fatty acids is often used their esters. These are typically methyl or ethyl esters or the esters of low molecular weight polyalkylene glycols, such as ethylene glycol, diethylene glycol and other similar compounds. Common to all these compounds is their saponification under alkaline conditions, in which they begin to show gidrofobiziruyuschey action, but simultaneously emit unwanted, harmful substances, such as methanol, ethanol or ethylene glycol.

Based on the foregoing, the present invention was based on the objective to offer the dispersion powder, which would avoid the disadvantages of the prior art.

The object of the invention in accordance with this are redispersible in water of polymer powder compositions containing one or more anhydrides of fatty acids in an amount of from 0.1 to 70 wt.% in terms of the total weight of the polymer powder composition.

As anhydrides of fatty acids for use in the proposed invention the polymer powder compositions suitable anhydrides branched or unbranched, saturated or unsaturated fatty acids 8-22 carbon atoms. You can also use mixed (unbalanced) anhydrides of these fatty acids. the beside this, you can use mixed anhydrides of these fatty acids and carboxylic acids with 2-6 carbon atoms, such as acetic acid or propionic acid. It is preferable to use a symmetric anhydrides of fatty acids. Especially preferred symmetrical anhydrides of saturated or unsaturated fatty acids with 10 to 18 carbon atoms, for example anhydrides lauric acid (n-dodecanol acid), myristic acid (n-tetradecanoic acid), palmitic acid (n-hexadecanoic acid), stearic acid (n-octadecanoic acid)and oleic acid (9-dodecanoic acid).

All such anhydrides get the usual, well-known specialists in the field methods. One such preferred method is that the acid chloride of a particular acid is subjected to interaction with the appropriate acid with the removal of the released hydrochloric acid. In another embodiment, the anhydrides can also be obtained by interaction of two molecules of fatty acid with a strong mineral acid. In this case, the use of two different fatty acids get a mixture of symmetrical and unsymmetrical anhydrides.

In one of the preferred embodiments of the invention offer it redispersion in water of polymer powder composition contains

a) from 60 to 99.9 wt.% one or more water-insoluble, film-forming fundamental-based polymers, Homo - and copolymers of one or more monomers from the group includes vinyl esters of unbranched or branched alkylcarboxylic acids with 1-15 carbon atoms, methacrylates and acrylates of alcohols with 1-15 carbon atoms, vinylaromatic compounds, olefins, diene and vinylchloride,

b) from 0.1 to 30 wt.% one or more anhydrides of fatty acids and

C) from 0 to 30 wt.% one or more protective colloids,

in each case, calculated on the total weight of the polymer powder composition.

Particularly preferred polymer powder compositions containing anhydride of a fatty acid (b) in an amount of from 0.1 to 10 wt.%, first of all, from 1 to 5 wt.%.

It is suitable for production of the main polymer (a) vinyl esters are vinyl esters of carboxylic acids with 1 to 15 carbon atoms. To the preferred vinyl esters are vinyl acetate, finalproject, vinylboronate, vinyl 2-ethylhexanoate, vanillaware, 1-methylphenylacetic, vinylbilt and vinyl esters of α-branched monocarboxylic acids with 9 to 13 carbon atoms, for example the products VeoVa9®or VeoVa10®(trade names of products manufactured by the company Resolution). Particularly preferred among the above vinyl esters are vinyl acetate.

To an acceptable methacrylates or acrylates are esters of unbranched or branched alcohols with 1-15 carbon atoms, such as metilici is at, a methacrylate, acrylate, methacrylate, propylacetate, propylbetaine, n-butyl acrylate, n-butylmethacrylate, 2-ethyl hexyl acrylate, norbornylene. Preferred of them are methyl acrylate, methyl methacrylate, n-butyl acrylate and 2-ethyl hexyl acrylate.

As an example of olefins and dienes can be called ethylene, propylene and 1,3-butadiene. To an acceptable vinylaromatic compounds include styrene and vinyltoluene. One of the acceptable vinylchloride is vinyl chloride.

If necessary, the basic polymer can also copolymerizate auxiliary monomers in an amount of from 0.05 to 50 wt.%, preferably from 1 to 10 wt.%, in terms of the total weight of the basic polymer. As examples of auxiliary monomers can be called ethylene unsaturated mono - and dicarboxylic acids, preferably acrylic acid, methacrylic acid, fumaric acid and maleic acid, amides and NITRILES of ethylene unsaturated carboxylic acid, preferably acrylamide and Acrylonitrile, mono - and diesters of fumaric acid and maleic acid such as the diethyl and diisopropyl esters, and also maleic anhydride, ethylene unsaturated sulfonic acids, respectively, and their salts, preferably vinylsulfonic and 2-acrylamide-2-methylpropanesulfonate. As others when the development can be called pre-stitched comonomers, such as ethylene polyunsaturated comonomers, such as divinerecipes, diallylmalonate, alismataceae or treelistener or secondary link comonomers, for example acrylamidoglycolate acid (AHAs), methyl ether methylacrylamide acid (MAMAC), N-methylolacrylamide (N-MA), N-methylolmethacrylamide (N-MMA), N-metroselskabet, simple alkalemia esters, such as isobutoxide, or esters of N-methylolacrylamide, N-methylolmethacrylamide and N-methylolacrylamide. For use in these purposes is also suitable comonomers with epoxy functional groups, such as glycidylmethacrylate and glycidylmethacrylate. As other examples of the comonomers with silicon functional groups, such as Acrylonitrile(alkoxy)- and methacryloxypropyl(alkoxy)silanes, vinyltriethoxysilane and fenilmetilketil that as alkoxygroup can contain, for example, metoxygroup, ethoxypropan and groups of ethers of ethoxypropylamine. In addition, you can also use monomers with hydroxy or CO groups, for example hydroxyalkyl esters of methacrylic and acrylic acids, such as hydroxyethyl-, hydroxypropyl - or hydroxyethylacrylate or-methacrylate, and also compounds such as diacetonitrile and acetylacetoneiminates and the and-methacrylate.

As an example of a suitable Homo - and copolymers can be called the homopolymers of vinyl acetate, copolymers of vinyl acetate with ethylene, copolymers of vinyl acetate with ethylene and one or more other complex vinyl esters, copolymers of vinyl acetate with ethylene and acrylates, copolymers of vinyl acetate with ethylene and vinyl chloride, copolymers of styrene with acrylates and copolymers of styrene with 1,3-butadiene, which optionally can further comprise the abovementioned auxiliary monomers.

It is preferable to use homopolymers of vinyl acetate, copolymers of vinyl acetate with 1 to 40 wt.% ethylene, copolymers of vinyl acetate with 1 to 40 wt.% ethylene and 1-50 wt.% one or more other comonomers from the group comprising a complex of vinyl esters with 1-15 carbon atoms in the carboxyl residue, such as WikiProject, vanillaware, vinyl esters of α-branched carboxylic acids with 9 to 13 carbon atoms, such as products VeoVa9®, VeoVa10®and VeoVa11®, copolymers of vinyl acetate with 1 to 40 wt.% ethylene and preferably 1-60 wt.% acrylate unbranched or branched alcohols with 1-15 carbon atoms, especially n-butyl acrylate or 2-ethylhexyl acrylate, and copolymers with 30-75 wt.% vinyl acetate, 1-30 wt.% vanillaware or vinyl ester of α-branched carboxylic acid having 9 to 13 carbon atoms, as well as the 1-30 wt.% acrylate unbranched or branched alcohols with 1-15 carbon atoms, first of all, n-butyl acrylate or 2-ethylhexyl acrylate, which may additionally contain 1-40 wt.% ethylene, copolymers of vinyl acetate with 1 to 40 wt.% ethylene and 1-60 wt.% vinyl chloride, each of these polymers may further comprise the above-described auxiliary monomers in the stated quantities, as given in wt.% values that define the content of each component in the composition of the corresponding copolymer, the amount in each case add up to 100 wt.%.

It is preferable to use polymers of (meth)acrylates, such as copolymers of n-butyl acrylate or 2-ethylhexyl acrylate or copolymers of methyl methacrylate with n-butyl acrylic atom and/or 2-hexyl acrylate, copolymers of styrene and acrylates, preferably with one or more monomers from the group comprising methyl acrylate, acrylate, propylacetate, n-butyl acrylate and 2-ethyl hexyl acrylate, copolymers of vinyl acetate and acrylates, preferably with one or more monomers from the group comprising methyl acrylate, acrylate, propylacetate, n-butyl acrylate, 2-ethyl hexyl acrylate and under certain conditions, ethylene, and copolymers of styrene with 1,3-butadiene, with each of these polymers may further comprise the above-described auxiliary monomers in the stated quantities, as given in wt.% value definition the determinant of the content of each component in the composition of the corresponding copolymer, in sum, in each case add up to 100 wt.%.

Monomers, respectively mass relative content of comonomers is selected when this so that the glass transition temperature Twithpolymer, as a rule, were in the range from -50 to +50°C, preferably from -30 to +40°C. the glass transition Temperature Twithpolymers can be defined in the usual way by the method of differential scanning calorimetry (DSC). Approximate values of glass transition temperature Twithyou can also pre-calculated using equation Fox (Fox). In accordance with the method of Fox (T.G. Fox, Bull. Am. Physics Soc. 1, 3, 1956, p.123) the glass transition temperature can be calculated by the following formula:

1/Twith=x1/TC1+x2/TC2+...+xn/Tcn,

where xndenotes the mass fraction (wt.%/100) of the monomer n, and Tcndenotes expressed in degrees Kelvin glass transition temperature of homopolymer monomer n. The values of glass transition temperature Twithfor homopolymers are listed in Polymer Handbook Handbook, 2nd ed., published by J.Wiley & Sons, New York, 1975.

Homo - and copolymers produced by the method of emulsion or suspension polymerization, and preferably to get them by the method of emulsion polymerization, at a temperature, which typically ranges from 40 to 100°C., preferably from 60 to 90°C. the Copolymerization of gaseous with the suits, such as ethylene, 1,3-butadiene or vinyl chloride, can also be carried out under pressure, usually under pressure in the range from 5 to 100 bar.

The initiate polymerization using commonly used in emulsion, respectively, suspension polymerization are soluble in water, respectively, are soluble in the monomers, initiators, or combinations of redox initiators. As an example, water-soluble initiators can be called sodium, potassium and ammonium salts peroxidizing acid, hydrogen peroxide, tert-butylperoxide, tert-butylhydroperoxide, peroxodisulfate potassium tert-butylperoxide, cumonherface, isopropylbenzaldehyde and azobisisobutyronitrile. As an example, are soluble in the monomers, initiators can be called dicetylperoxydicarbonate, dicyclohexylperoxydicarbonate and Dibenzoyl peroxide. These initiators are usually used in amounts of from 0.001 to 0.02 wt.%, preferably from 0.001 to 0.01 wt.%, in each case, calculated on the total weight of the monomers.

As redox initiators used the above initiators in combination with reducing agents. It is suitable for use in this purpose, the reducing agents are the sulfites and bisulfite alkali metals and ammonium, for example sodium sulfite, the derivatives of the su is horselove acid, such as formaldehydeinduced zinc or alkali metals, such as hydroxymethanesulfinic sodium and ascorbic acid. For this purpose, the reducing agent is usually used in amounts of from 0.001 to 0.03 wt.%, preferably from 0.001 to 0.015 wt.%, in each case, calculated on the total weight of the monomers.

To regulate the molecular weight during the polymerization it is possible to apply the so-called growth regulators chain. When using these growth regulators chain they are usually used in amounts of from 0.01 to 5.0 wt.% in terms of the polymerized monomers and injected into the reaction system separately or pre-mixed with other reagents. As examples of such substances can be called n-dodecylmercaptan, tert-dodecylmercaptan, mercaptopropionic acid, methyl ester mercaptopropionic acid, isopropanol and acetic aldehyde.

It is suitable for use in the polymerization of protective colloids) include polyvinyl alcohols, polyvinylacetal, polyvinylpyrrolidone, polysaccharides in water-soluble form such as starches (amylose and amylopectin), celluloses and their carboxymethyl, metal, hydroxyethylene and hydroxyproline derivatives, proteins such as casein or Caseinate, soybean protein, gelatin, ligninsulfonate, synthetic polymers, such as poly(meth)acrylic the Wai acid, the copolymers of (meth)acrylates and comonomeric links with functional carboxyglutamic, poly(meth)acrylamide, polyphenylsulfone acids and their water-soluble copolymers, melamineformaldehyde, naphthaleneformaldehyde, copolymers of styrene with maleic acid, and copolymers simple vinyl ether with maleic acid.

To the preferred protective colloids are partially or completely saponified polyvinyl alcohols with a degree of hydrolysis of from 80 to 100 mol.%, first of all partially saponified polyvinyl alcohols with a degree of hydrolysis of from 80 to 95 mol.%, and with a viscosity determined using a viscometer of Heppler in 4%aqueous solution, from 1 to 30 MPa·s (method for the determination of viscosity using a viscometer of Heppler at a temperature of 20°C., DIN 53015). Preferred partially saponified hydrophobically modified polyvinyl alcohols with a degree of hydrolysis of from 80 to 95 mol.% and with a viscosity determined using a viscometer of Heppler in 4%aqueous solution, from 1 to 30 MPa·S. as an example of such polyvinyl alcohols can be called partially saponified copolymers of vinyl acetate with hydrophobic comonomers, such as isopropenylacetate, vinylbilt, vinylethylene, vinyl esters of saturated α-branched monocarboxylic acids with 5 or 9-11 carbon atoms is kind, diallylmalonate and dialkylphosphate, such as Diisopropylamine and Diisopropylamine, vinyl chloride, simple mineralquelle esters, such as vinylboronic ether, olefins, such as Aten and the mission. The proportion of hydrophobic units should preferably be from 0.1 to 10 wt.% in terms of the total weight of partially saponified polyvinyl alcohol. These polyvinyl alcohols can also be used as mixtures thereof.

The most preferred are polyvinyl alcohols with a degree of hydrolysis of from 85 to 94 mol.% and the viscosity determined using a viscometer of Heppler in 4%aqueous solution, from 3 to 15 MPa·s (method for the determination of viscosity using a viscometer of Heppler at a temperature of 20°C., DIN 53015). These protective colloids can be obtained with known methods and add them to polymerization in number, usually a total of from 1 to 20 wt.% in terms of the total weight of the monomers.

When carrying out the polymerization in the presence of emulsifiers their number should be from 1 to 5 wt.% in recalculation on weight of monomers. It is suitable for use in these purposes the emulsifiers are as anyone and cationic and nonionic emulsifiers, for example anionic surfactants, such as alkyl sulphates with chain length from 8 to 18 carbon atoms, sulfates simple alilovic or al is ilarionovich esters, containing from 8 to 18 carbon atoms in the hydrophobic residue and up to 40 ethylene or propyleneoxide units, alkyl - or alkylarylsulfonates with 8-18 carbon atoms, esters and palefire sulfonterol acids and monohydroxy alcohols or ALKYLPHENOLS, or nonionic surfactants, such as simple alkylpolyglycoside esters or simple alkylarylsulphonate esters with 8-40 ethylenoxide links.

Upon completion of the polymerization of the residual monomers can be removed using known methods additional polymerization, usually by additional polymerization initiated oxidation catalyst-recovery. The remains volatile monomers can also be removed by distillation, preferably under reduced pressure, and, if necessary, by passing through the system or on the system inert carrier gas, such as air, nitrogen or water vapor. The solids content in the resulting by such aqueous dispersions ranges from 30 to 75 wt.%, preferably from 50 to 60 wt.%.

To obtain holder in water polymer powder composition of component b), which is the anhydride of a fatty acid, any acceptable way is mixed with the aqueous dispersion of polymer (a), after which the dispersion is subjected to drying. The dispersion can be dried, for example, by drying in the fluidized bed, freeze drying and the and spray drying. It is preferable to dry the dispersion by spray drying. Spray drying is carried out in the normal intended for these purposes, installations for spraying dispersions can be used one-, two - or multi-component nozzles or centrifugal atomizer (rotating disk). The temperature output depending on the type of installation, the glass transition temperature of the resin and the desired degree of drying is usually chosen in the range from 45 to 120°C, preferably from 60 to 90°C.

Upon receipt holder in water of polymer powder compositions optionally also use protective colloids) as contributing to the auxiliary drying agents. These contribute to the drying auxiliary agents selected from the same group as the above-described protective colloids)used in the polymerization. The content of protective colloid b) in the polymer powder composition should preferably be from 1 to 30 wt.% in terms of the total weight of the latter.

When spray drying of aqueous dispersions of polymers in the system, it is advisable, as it was installed, add defoamer in an amount up to 1.5 wt.% in terms of the amount of the basic polymer.

Viscosity is subjected to spray-dried dispersion establish by regulation of the content of solid substances such is asceta, so that its value was less than 1000 MPa·s (viscosity according to Brookfield at 20 revolutions and 23°C.), preferably less than 350 MPa·s solids Content in the exposed drying the dispersion is more than 35%, preferably more than 40%.

In yet another preferred embodiment of the invention proposed therein redispersible in water of polymer powder compositions do not contain a polymer component (a), and contain only

b) from 5 to 70 wt.% one or more anhydrides of fatty acids and

b) from 30 to 95 wt.% one or more protective colloids, in each case calculated on the total weight of the polymer powder composition.

To obtain such a polymer powder compositions anhydride of the fatty acid is usually mixed with an aqueous solution of protective colloid, after which the resulting mixture is dried, preferably by spray drying. Suitable for use in such polymer powder compositions anhydrides of fatty acids and protective colloids and their preferred representatives, and also suitable for the production of such polymer powder compositions and preferred methods of drying are similar to those discussed in the description of the above embodiments of the invention.

Regardless of the composition of the holder of polymer powders in water to improve their ex is loitation-technical characteristics to the dispersion during drying, you can optionally add other additives. Such other components of the polymer powder compositions that are added to them in preferred embodiments of the invention, include, for example, defoamers, pigments, and foam stabilizers.

Among the additional components added to the proposed invention redispersion in water of polymer powder compositions in other preferred embodiments of the invention include organic and inorganic additives. As examples of such additives, the list of which, however, is not limited to the following compounds can be called defoamers, inorganic or mineral anti-caking and fillers. The relative content of each of these additives may comprise up to 50 wt.%, preferably up to 30 wt.%, especially preferably up to 20 wt.%, in terms of the total weight holder in water of polymer powder compositions. Defoamers are usually added to redispersion in water of polymer powder compositions in an amount up to 5 wt.%.

Proposed in the invention redispersible in water of polymer powder compositions may also contain inorganic or mineral compounds, preferably in an amount of 5 to 30 wt.%. Such inorganic additives, improving resistance to caking, improves the stability of the polymer parashkevov the composition during storage, that applies primarily to polymer powders with a low glass transition temperature. As an example, conventional anti-caking (also called anti-sintering) can be called calcium carbonate, respectively, magnesium, talc, gypsum, silicic acid, kaolin and silica with a particle size predominantly from 10 nm to 100 μm.

Proposed in the invention redispersible in water of polymer powder compositions can be used in all areas where they find the traditional use. Proposed in the invention polymer powder compositions can be used individually or in combination with conventional redispersible powders, for example, in products, construction chemicals, if necessary in conjunction with hydraulically setting astringent, such as cement (Portland cement, aluminous cement, trass cement, slag Portland cement, magnesia cement, phosphate cement), gypsum and liquid glass, production of construction adhesives, primarily adhesives for gluing tiles and thermal insulation adhesives for fastening elements used to create full insulation, plasters, coatings in the form of thin layers or a single layer of plaster, putty, filler for the manufacture of floors, samarasekara compounds, waterproofing slurries, solutions for grouting W is s and paints. In addition, we offer in the invention polymer powder compositions can be applied in solutions for filling and syringe concrete used in above-ground, in particular in high-rise and underground construction, as well as for lining tunnels. Proposed in the invention redispersible in water of polymer powder compositions can further be used as a water-repellent agent for sand, clay, paper, textiles, natural or synthetic fibers. Proposed in the invention redispersible in water polymer powder compositions can also modify or to cover different surfaces, for example, in the materials for coatings and varnishes.

With the invention it has been unexpectedly found that its proposed polymer powder compositions have waterproofing agents as it remains the best properties in comparison with the more mobile (low-viscosity) derivatives of fatty acid esters or acids, represented directly in the aqueous phase. Although the anhydrides of fatty acids have a slightly lower solubility in water and low mobility, which is determined by their ability to migrate from an organic polymer on the surface of the partition and saponification to it, they nevertheless exhibit exceptionally high water properties. The big advantage of this is m is that of one molecule of the anhydride formation of two molecules of salts of fatty acids, each of which has a corresponding activity. Another advantage is the absence of the discharge of harmful substances.

Examples

Powders

The powder was obtained by spray drying the stabilized polyvinyl alcohol dispersion of a copolymer of ethylene and vinyl acetate with the addition of 6 wt.% polyvinyl alcohol with a degree of saponification of 88 mol.% and with a viscosity determined using a viscometer of Heppler in 4%aqueous solution, 4 MPa·s and adding the derived fatty acids in the following amounts. Then the dispersion was sprayed through a two-component nozzle. The spray component when it served as a pre-compressed to a pressure of 4 bar air, and the formed droplets were dried in a co-current, heated to 125°C air. The obtained dry powder was mixed with 10 wt.% commercially available anti-caking (calcium carbonate, respectively, magnesium).

Powder P1: with the addition of 1 wt.% anhydride lauric acid.

Powder P2: with the addition of 4 wt.% anhydride lauric acid.

Powder P3: with the addition of 1 wt.% anhydride palmitic acid.

Powder A4: with the addition of 2 wt.% mixed lauric anhydride and acetic acid.

Comparative powder P5: with the addition of 1 wt.% meilleure as the e of water-repellent.

Comparative powder P6: with the addition of 4 wt.% meilleure as a repellent.

Test

Determination of hydrophobicity

To determine the hydrophobicity was used mineral mass of 30 wt.% cement, 68 wt.% sand and 2 wt.% the dispersion of the powder. After addition of water produced a prototype, which is then dried. This prototype dropper put a drop of water and measured the time taken to perform this drops on the surface of the sample (see table 1).

Table 1
ExampleTime [min]
Powder P1130
Powder P2450
Powder P3110
Powder A4105
Comparative powder P5100
Comparative powder P6420

From the table it follows that the hydrophobization, provide proposed in the invention of products, significantly exceeds the same indicator using standard p is the FL.

1. Redispersible in water of polymer powder compositions containing one or more anhydrides of fatty acids in an amount of from 0.1 to 70 wt.% in terms of the total weight of the polymer powder composition.

2. The polymer powder composition according to claim 1, characterized in that they contain one or more anhydrides, branched or unbranched, saturated or unsaturated fatty acids 8-22 carbon atoms.

3. The polymer powder composition according to claim 1, characterized in that they contain asymmetric anhydrides of fatty acids.

4. The polymer powder composition according to claim 3, characterized in that they contain asymmetric anhydrides of fatty acids with 8-22 carbon atoms and carboxylic acids with 2-6 carbon atoms.

5. The polymer powder composition according to claim 1, characterized in that they contain symmetrical anhydrides of saturated or unsaturated fatty acids with 10 to 18 carbon atoms.

6. The polymer powder composition according to claim 1, characterized in that they contain
a) from 60 to 99.9 wt.% one or more water-insoluble film-forming fundamental-based polymers, Homo - or copolymers of one or more monomers from the group comprising vinyl esters of unbranched or branched alkylcarboxylic acids with 1-15 carbon atoms, methacrylates and acrylates of alcohols with 1-15 carbon atoms, Vilalara eticheskie connection olefins, diene and vinylchloride,
b) from 0.1 to 30 wt.% one or more anhydrides of fatty acids and
C) from 0 to 30 wt.% one or more protective colloids,
in each case, calculated on the total weight of the polymer powder composition.

7. A method of obtaining a holder in water of the polymer powder composition according to one of claims 1 to 6, characterized in that the mixture of aqueous dispersions of polymer a) and the anhydride of the fatty acid (b) or the anhydride of the fatty acid (b) is subjected to drying, in each case optionally in the presence of a protective colloid).

8. The application of the holder in water of the polymer powder composition according to one of claims 1 to 6 in products construction chemicals in combination with hydraulically setting binders, such as cement, gypsum and liquid glass.

9. The application of the holder in water of the polymer powder composition according to one of claims 1 to 6 in the production of construction adhesives, primarily adhesives for gluing tiles and thermal insulation adhesives for fastening elements used to create full insulation, plasters, coatings in the form of thin layers or a single layer of plaster, putty, filler for the manufacture of floors, samarasekara masses, waterproofing slurries, solutions for jointing, paints, as well as solutions for shotcrete and shotcrete rigs used is in the Overworld, in particular, high-rise and underground construction and lining of tunnels.

10. The application of the holder in water of the polymer powder composition according to one of claims 1 to 7 as a water-repellent agent for sand, clay, paper, textiles, natural or synthetic fibers, as well as for the modification of surfaces or application of coatings.



 

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Coolant composition // 2405018

FIELD: chemistry.

SUBSTANCE: coolant composition for a hot water supply/heating system contains 1-10 mol % dimethyl ether and 99-90 mol % carbon dioxide from the total number of moles of dimethyl ether and carbon dioxide. The invention also discloses a method of using said composition.

EFFECT: how toxicity and high environmental friendliness of the coolant and high reliability of its use.

3 cl, 16 tbl, 2 dwg

FIELD: chemistry.

SUBSTANCE: one-time use thermostabilising material is a mixture of polyacrylamide gel which contains water and semi-aqueous calcium sulphate. The top surface of the thermostabilising material is coated with a single-component sealing compound KLT-30.

EFFECT: invention enables to keep the temperature of a component of electronic apparatus at up to 150°C for a long period of time when exposed to a low-temperature flame.

2 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to compositions based on silane-functional polymers, which are suitable for adhesive binding, sealing and coating porous substrates. The composition contains at least one silane-functional polymer, at least one organosilane and at least one organotitanate. The silane-functional polymer is a silane-functional polyurethane polymer or can be obtained through hydrosilylation of polymers, having terminal double bonds. The organosilane contains at least one sulphur atom. The organotitanate has ligands bound to a titanium atom through an oxygen-titanium bond. The ligands are selected from a group consisting of an alkoxy group, a sulphate group, a carboxylate group, a dialkylphosphate group and an acetylacetonate group. Content of the organotitanate in the composition is between 0.1 and 10 wt %. Content of the organosilane in the composition is between 0.1 and 7 wt %. The composition also contains at least one filler, content of which is between 10 and 70 wt %. The composition is used for binding, sealing and coating substrates made from concrete, mortar, brick, tiles, plaster, natural stone such as granite or marble, glass, glass-ceramic, metal or metal alloy, wood, plastic and lacquer.

EFFECT: obtained article, which is bound, sealed or coated using the composition, is a building structure, more specifically a building or civil construction structure; the composition guarantees efficient adhesion to a substrate even after storage in the presence of water.

17 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: butadiene-nitrile rubber based adhesive composition contains phenol formaldehyde resin, polyvinylchloride resin which is chlorinated or chlorinated isopreprene rubber, zinc oxide, magnesium oxide, organic solvent and filler. The filler is a mixture of lignocellulose polydispersed fibre materials and ethyl cellulose. The lignocellulose polydispersed fibre materials are wastes from textile industry, wood chemical and/or cellulose and paper production.

EFFECT: composition increases adhesion strength of various substrates and improves thixotropic properties.

4 tbl, 2 ex

FIELD: machine building.

SUBSTANCE: glue contains acrylic adhesive Anaterm-105 and additionally it contains varnish F-40 on base of modified phenol-formaldehyde resin and rubber. Glue is produced by mixing adhesive and varnish with addition of hardener for adhesive before utilisation of glue.

EFFECT: upgraded deformation-strength properties of glue connections and reduced cost of glue.

2 dwg, 1 ex

FIELD: chemistry.

SUBSTANCE: adhesive composition contains chlorine-containing rubber and an organic solvent. The chlorine-containing rubber used is chlorosulphonated polyethylene and the organic solvent is toluene. The composition also contains a borate methyl phosphite modifier. Components of the composition are in the following ratio, pts. wt: chlorosulphonated polyethylene 20, toluene 80, borate methyl phosphite 0.1-0.5.

EFFECT: simple formulation of the adhesive composition, high strength when gluing vulcanised rubber with metal.

2 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: composition contains at least one thermoplastic polyolefin which is solid at 25°C, preferably atactic poly-α-olefin and/or silane-grafted poly-α-olefin. The composition also contains at least one thermoplastic polyester which is solid at 25°C, in particular straight copolyester of polycaprolactone with urethane and at least one amide. The composition is also suitable for gluing polyolefin films. This enables to obtain a composite element from a polyolefin film and a substrate, which is fibre material, glued by the hot-melt adhesive. The composite element can be produced industrially and can be especially used in interior finishing, preferably of a component built into a transportation vehicle or can be used in the furniture industry.

EFFECT: hot-melt adhesive based on the composition is characterised by good adhesion to polyolefins and low adhesion to teflon or teflon-coated surfaces.

22 cl, 1 dwg, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a method of gluing vulcanised rubber to each other and can be used in rubber industry. The method of gluing different types of vulcanised rubber to each other involves application of polychloroprene rubber based glue onto vulcanised rubber surfaces to be glued and then bringing the surfaces into contact. The base of the polychloroprene glue used is nairit NT or nairit DP combined with butyl phenolformaldehyde resin in 88NT or 88SA adhesive. Before application onto the surface, the adhesive is mixed with a trichloroethylphosphate or trichloropropylphosphate modifier in amount of 0.05-2.0 pts. wt per 100 pts. wt of the adhesive, and after application, the adhesive film is dried at room temperature for 1-2 minutes and the surfaces to be glued are brought into contact under a load for 24 hours.

EFFECT: increased strength of the glue joint when gluing vulcanised rubber and simplification of the gluing process.

2 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to adhesive compositions based on chloroprene rubber and can be used in the rubber industry when gluing together vulcanised rubber. The adhesive composition contains polychloroprene rubber nairit DP, butylphenolformaldehyde resin 101 K, water, zinc oxide, magnesium oxide, a modifier, an organic solvent which is a mixture of ethylacetate and petroleum solvent. The modifier used is methylphosphite borate. Components of the composition are in the following ratio in pts. wt: polychloroprene rubber nairit DP - 90.0, butylphenolformaldehyde resin 101 K - 90.0 water - 3.0, zinc oxide - 5.0, magnesium oxide - 11.0, said organic solvent - 800.0, methylphosphite borate - 10.0-3.0.

EFFECT: invention increases strength when gluing together vulcanised rubber based on different types of rubber.

2 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to adhesive compositions based on polychloroprene rubber and can be used in the rubber industry when gluing together vulcanised rubber. The adhesive composition contains polychloroprene rubber nairit DP, butylphenolformaldehyde resin 101 K, water, zinc oxide, magnesium oxide, an organic solvent which is a mixture of ethylacetate and petroleum solvent and a modifier. The modifier used is trichloroethylphosphate or trichloropropylphosphate. Components of the composition are in the following ratio in pts. wt: polychloroprene rubber nairit DP - 90.0, butylphenolformaldehyde resin 101 K - 90.0 water - 3.0, zinc oxide - 5.0, magnesium oxide - 11.0, said organic solvent - 800.0, said modifier - 1.0-20.0.

EFFECT: invention increases strength when gluing together vulcanised rubber based on different types of rubber.

2 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to adhesive compositions based on chloroprene rubber and can be used in the rubber industry when gluing together vulcanised rubber. The adhesive composition contains polychloroprene rubber nairit NT, butylphenolformaldehyde resin 101 K, thiuram, zinc oxide, magnesium oxide, a modifier and an organic solvent which is a mixture of ethylacetate and petroleum solvent. The modifier used is methylphosphite borate. Components of the composition are in the following ratio in pts. wt: polychloroprene rubber nairit NT - 100.0, butylphenolformaldehyde resin 101 K - 90.0, zinc oxide - 5.0, magnesium oxide - 12.0, thiuram - 2.0, said organic solvent - 800.0, methylphosphite borate - 10.0-30.0.

EFFECT: invention increases strength when gluing together vulcanised rubber based on different types of rubber.

2 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to adhesive compositions based on chloroprene rubber and can be used in the rubber industry when gluing together vulcanised rubber. The adhesive composition contains polychloroprene rubber nairit NT, butylphenolformaldehyde resin 101 K, thiuram, zinc oxide, magnesium oxide, a modifier and an organic solvent which is a mixture of ethylacetate and petroleum solvent. The modifier used is trichloroethylphosphate or trichloropropylphosphate. Components of the composition are in the following ratio in pts. wt: polychloroprene rubber nairit NT - 100.0, butylphenolformaldehyde resin 101 K - 90.0, zinc oxide - 5.0, magnesium oxide - 12.0, thiuram - 2.0, said organic solvent - 800.0, said modifier - 0.5-10.0.

EFFECT: invention increases strength when gluing together vulcanised rubber based on different types of rubber.

2 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of recuperating unreacted monomers contained in a stream of residual gas formed during synthesis of a copolymer of vinyl ester and ethylene. Described is a method of producing copolymers containing vinyl ester or ethylene or ethylene unsaturated monomers via radical emulsion or suspension polymerisation in an aqueous medium at absolute pressure between 5 and 100 bars. At the end of polymerisation, the reaction mixture is throttled with reduction of its absolute pressure to 0.1-5 bars. Unreacted monomers are recuperated from the residual gas through multi-step fractionated condensation with deep cooling. At the first condensation step, water vapour is condensed at temperature ranging from -90 to -60°C, and at the third condensation step, ethylene is condensed at temperature ranging from 140 to 100 °C.

EFFECT: design of a method which enables extraction of valuable substances from the formed residual gas, where the said substances can be cheaply recycled.

9 cl, 2 dwg, 1 tbl, 1 ex

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