Abstract: A description is given of aqueous polyvinyl ester dispersions comprising a) at least one vinyl ester copolymer derived from at least one vinyl ester of a monocarboxylic acid, at least one ethylenically unsaturated monomer containing N-alkylol groups and/or derivatives of N-alkylol groups, and, if desired, further comonomers, b) at least one protective colloid, c) at least one carboxylic acid and/or salt thereof, containing at least one further radical selected from the group consisting of hydroxyl, amino, carboxyl, carboxylic ester, and carboxylic amide radicals, and d) at least one water-soluble salt of a divalent metal ion. These dispersions are especially suitable for adhesively bonding porous or semiporous substrates, such as wood. Adhesive bonds of high strength and water resistance can be produced that do not exhibit discoloration. The dispersions can be used more particularly as veneer adhesives.

Abstract: Polyvinyl ester dispersions with low film formation temperature and high water resistance and use thereof What are described are polyvinyl ester dispersions having a minimum film formation temperature of less than or equal to 10° C. These comprise a crosslinkable polyvinyl ester dispersion and an ester of aliphatic monocarboxylic acids and at least trihydric aliphatic alcohols and/or an ester of at least tribasic aliphatic carboxylic acids and monohydric aliphatic alcohols as film formation assistants. These polyvinyl ester dispersions can be used as adhesives with high water resistance.

Abstract: A description is given of an aqueous dispersion adhesive based on an aqueous polymer dispersion comprising at least one emulsion polymer with small amounts of crosslinkable N-methylol groups, at least one protective colloid, and at least one crosslinking agent containing N-methylol groups, of which at least one is etherified with an alkanol, said crosslinking agent being selected from the group consisting of hydroxymethylated cyclic ethyleneureas, hydroxymethylated cyclic propyleneureas, hydroxymethylated bicyclic glyoxal diureas, hydroxymethylated bicyclic malonaldehyde diureas or combinations thereof. The aqueous dispersion adhesive can be employed in particular for adhesively bonding porous and semiporous substrates.

Abstract: A description is given of a process of emulsion polymerization of free-radically polymerizable ethylenically unsaturated monomers selected from the group of the monoesters or diesters of ethylenically unsaturated monocarboxylic or dicarboxylic acids with alkanols, vinyl esters and/or vinylaromatics and, if desired, further monomers copolymerizable therewith, at least 60% of the total conversion in the polymerization taking place at a temperature of 100° C. to 160° C., the polymerization being performed in the presence of emulsifiers and an amount of 0% to 1% by weight, based on the total amount of the monomers used, of protective colloid. The process can be used to obtain significantly faster conversions for comparable quality of the process products. The dispersions obtained can be employed in a wide variety of different applications, such as binders for paints or as adhesives.

Abstract: A decsription is given of an aqueous copolymer poly(vinyl ester) dispersion comprising A) 100 parts by weight of a copolymer derived from A1) from 34.9 to 95% by weight of vinyl esters of aliphatic, saturated carboxylic acids, A2) from 4.9 to 65% by weight of maleic esters and/or fumaric esters of monohydric aliphatic alcohols having a chain length of C1-C18 and/or alpha-olefins having from 2 to 8 carbon atoms, A3) from 0.1 to 10% of at least one comonomer having at least one stabilizing nonionic or ionic group, and also A4) if appropriate, other comonomers, the sum of components A1, A2 and A3 and if appropriate A4 giving 100% by weight, B) from 0.1 to 4.5 parts by weight, based on the total amount of the monomers used, preferably from 0.5 to 3.5 parts by weight of at least one protecting colloid, preferably poly(vinyl alcohol), C) from 0.1 to 10 parts by weight, based on the total amount of the monomers used, preferably from 0.5 to 5.

Abstract: A description is given of a concrete molding which is coated with cement-bound mineral coating composition (cement slurry) and with a transparent varnish, the transparent varnish comprising as binder an aqueous polymer dispersion and also at least one anionic emulsifier containing at least one phosphate and/or phosphonate group. The concrete molding is distinguished by high gloss and can be used in particular as rooftile.

Abstract: A description is given of coating compositions comprising at least one strongly basic agent to set a pH of at least 10, at least one selected vinyl ester copolymer, if desired, pigment and/or filler, and, if desired, further additives customary per se. The coating compositions can be stored without use of additional preservatives and can be used to coat substrates of all kinds.

Abstract: A description is given of coating compositions comprising at least one pigment and/or filler and at least one aqueous dispersion of a selected emulsifier-stabilized vinyl ester copolymer which comprises as its stabilizer a mixture of at least one nonionic emulsifier and at least one salt of a bisester of a sulfonated dicarboxylic acid having 4 to 8 carbon atoms. The coating compositions formulated with these binders feature high scrub resistance.

Abstract: A description is given of an aqueous polymer dispersion comprising A) a polymer dispersion produced by free-radical polymerization of ethylenically unsaturated monomers, B) stabilizers suitable for carrying out the free-radical polymerization, and also C) 0.01 to 20 000 ppm by weight, based on the mass of the total dispersion, of at least one compound of the formula Ia and/or Ib where R1, R2, R13 and R14 independently of one another are hydrogen, C1-C6-alkyl, C1-C6-alkoxy, carboxyl, nitrile, isonitrile, cyano or halogen, R3 to R12 and R15 to R24 independently of one another are hydrogen and selected organic radicals, and at least one of the substituents R3 to R12, or R15 to R24, being hydroxyl and/or alkoxy and/or alkanoyloxy. The aqueous polymer dispersion may be used for coating foods, as color, or as adhesive, and the resultant films are distinguished by high fungicidal resistance.

Abstract: A description is given of a process for preparing bimodal or multimodal polymers from olefinically unsaturated monomers in an aqueous medium. The process features the introduction as initial charge of selected mixtures of polymeric stabilizers and of at least one selected ionic comonomer. In the polymerization process the monomer is metered continuously or discontinuously into the said initial charge. In this way it is possible by means of simple process measures to prepare bimodal or multimodal dispersions.

Abstract: Process for applying a polyvinyl ester dispersion-based adhesive by means of nozzle application and use of polyvinyl ester dispersion-based adhesives A description is given of an application process for polyvinyl ester dispersion-based adhesives through nozzles to a substrate, wherein an aqueous, primarily emulsifier-stabilized vinyl ester polymer dispersion having a solids content of at least 40% by weight, a viscosity of less than 8000 mPas, and a vinyl ester polymer glass transition temperature of ?30 to +40° C. is supplied to the nozzle and is applied from the nozzle, in the form of a thin jet or of a predeterminedly interrupted thin jet, to the substrate. The process can be implemented for long periods without interruption, and the adhesive bonding takes place at high speed.

Abstract: A description is given of an aqueous vinyl ester copolymer dispersion stabilized with a combination of at least one protective colloid and of at least one emulsifier, said dispersion having a viscosity of less than 8000 mPa*s, a weight average dw of the particle sizes of 0.5 to 10 ?m, and a ratio of weight average to number average of the particle sizes, dw/dn, of at least 2.5, and the polymer possessing a glass transition temperature of between ?30 and +15° C. The dispersion can be used as an adhesive for nozzle application processes.

Abstract: A novel food coating substance comprising a plasticizer-free aqueous copolymer poly(vinyl ester) dispersion of emulsion polymer, emulsifier, protective colloid and optionally other stabilizers is outstandingly suitable for the surface treatment or surface coating of hard cheese or semi-hard cheese, but also of meat products, fruits, nuts or seed material.

Abstract: Polymer dispersions, processes for the preparation thereof and the use thereof Polymer dispersions containing at least two copolymers A and B in a weight ratio of from 5:95 to 95:5 are described, the glass transition temperatures Tg of the copolymers A and B differing by at least 10° C., and at least one nonionic emulsifier from the group consisting of the aryl-substituted phenolalkyleneoxy ethers. From these polymer dispersions, it is possible to formulate, for example, coatings, glazes and paints for coating substrates of all types. The polymer dispersions are distinguished by a very good shear stability and can be applied in particular by spray application.

Abstract: Disclosed is a nonwoven airlaid fabric comprising a combination of synthetic fibres and of natural fibres which has been consolidated by application and crosslinking of a crosslinkable polymer dispersion. These products can be used as acquisition and distribution layers in personal care products.

Abstract: The invention relates to a method for reducing the amount of residual monomers in aqueous polymer dispersions means of chemical post-treatment. Post-treatment in the aqueous polymer dispersion is carried out by adding a redox system which contains a) 0.005-5 wt. % of an oxidation agent which contains an organic peroxide. and b) 0.005-5 wt. % of a reduction agent which contains sulfinic acids or salts thereof. Additionally the redox system can, optionally, contain catalytic amounts of a polyvalent metallic ion which can be treated in several valent stages. Post-treatment can be carried out at a temperature ranging from 20-100.degree. C. and at a PH-value ranging from 2-9. The invention also relates to the use of the inventive post-treated polymer dispersion for producing adhesives, coatings, powders, constructive chemical products or for refining textiles or paper.

Abstract: A description is given of laminates comprising sheetlike substrate and film joined to the substrate by means of an adhesive which comprises a polymer dispersion prepared by free-radical emulsion polymerization and an organosilane which is incorporated into the polymer during the polymerization and/or is added subsequently and which in addition to at least one silane group has at least one primary, secondary or tertiary amino group or at least one epoxide group or which comprises at least one ethylenically unsaturated group and at least one silane group. Through the addition of an organosilane it is possible to produce laminates which can be processed rapidly and which are distinguished by improved embossing strength.

Abstract: The present invention relates to aqueous plastic material dispersions based on vinyl ester copolymers, having a solids content of up to 80% by weight and a minimum film formation temperature below 20° C., which is substantially stabilized by ionic components, the vinyl ester copolymers containing at least one homo- or copolymer A and at least one homo- or copolymer B, methods for producing the same and the use thereof.

Abstract: The invention relates to water-dilutable binding agents and coating agents with particularly quick drying surfaces. The invention also relates to a method for the production and use thereof. The water-dilutable binding agents are based on polymer dispersions, which are characterized in that they contain at least one poly acid/polyvinylpyrrolidone complex and optionally one or several water-soluble zircon compounds. The inventive binding agents have a quick drying surface and are suitable for use in the production of primers, paints and plasters with quick drying surfaces or quick-acting wash-fastness.

Abstract: A description is given of an aqueous polymer dispersion which is set to a pH range of 4 to 6 and comprises A) 100 parts by weight of a homopolymer or copolymer produced by emulsion polymerization, B) 0.1 to 15 parts by weight, based on the total amount of the monomers used, of at least one protective colloid, C) 0.1 to 10 parts by weight, based on the total amount of the monomers used, of at least one nonionic emulsifier, D) 10 to 990 ppm by weight, based on the mass of the total dispersion of at least one antioxidant, and E) at least one polyene fungicide. A second variant of the aqueous polymer dispersions is set to a pH range of 4.5 to 5.5 and has components A) to C) and E) but no antioxidant. The protective colloid of the aqueous polymer dispersions has no cellulose ether, or up to 0.45 part by weight of cellulose ether, based on the total amount of the monomers used. The polymer dispersions described are distinguished by excellent polyene-fungicide tolerance and may be used for coating foods.