Abstract: A multistage emulsion polymerization process comprises polymerizing a first monomer composition comprising from 50 to 95 weight percent of vinyl acetate, from 5 to 40 weight percent of at least one vinyl ester of a C5 to C18 unsaturated carboxylic acid, and optionally up to 40 weight percent of ethylene, all based on the total weight of monomers in the first monomer composition, to produce a first stage polymer. A second monomer composition comprising 40 to 89.95 weight percent of at least one ester of methacrylic acid or a vinyl aromatic monomer, 10 to 59.95 weight percent of at least one ester of acrylic acid, and from 0.05 to 10 weight percent of at least one comonomer with acid functionality, based on the total weight of monomers in the second monomer composition, is then polymerized in the presence of the first stage polymer to produce a second stage polymer.

Abstract: A process for producing an aqueous coating composition comprises providing an aqueous polymer dispersion having a pH <7 and adding to the dispersion 1 to 30 ppm of 5-chloro-2-methyl-3(2H)-isothiazolone (CIT) and 10 to 1000 ppm of 2,2-dibro-mo-3-nitrilopropionamide (DBNPA), all by weight of the total weight of the dispersion. At least one adjuvant is also added to the dispersion to produce a coating composition. When the coating composition is to be put into service, the DBNPA is decomposed by raising the pH of the coating composition and the CIT is decomposed either by raising the pH of the coating composition or by adding a CIT-decomposing compound to the coating composition.

Abstract: An aqueous polymer dispersion is produced by multistage emulsion polymerization, in which a monomer composition I comprising 19 to 29 wt % hard monomers and 64 to 74 wt % soft monomers is polymerized to produce a first polymer phase and then a monomer composition II comprising 65 to 95 wt % hard monomers and 5 to 35 wt % soft monomers is polymerized to produce a second polymer phase. Monomer composition I also comprises from 1 to 5 wt % of at least one monomer selected from ethylenically unsaturated sulfonic acids, phosphonic acids, phosphoric acids, carboxylic acids, carboxylic amides, carboxylic anhydrides and mixtures thereof and 1 to 7.5 wt % of ethylenically unsaturated monomers containing keto groups. The weight ratio of monomer composition I to monomer composition II ranges from 50:50 to 65:35 and the polymer dispersion also contains a water-soluble cross-linking component selected from polyfunctional carboxylic hydrazides and/or polyfunctional amines.

Abstract: A multistage emulsion polymerization process comprises polymerizing a first monomer composition comprising from 50 to 95 weight percent of vinyl acetate, from 5 to 40 weight percent of at least one vinyl ester of a C5 to C18 unsaturated carboxylic acid, and optionally up to 40 weight percent of ethylene, all based on the total weight of monomers in the first monomer composition, to produce a first stage polymer. A second monomer composition comprising 40 to 89.95 weight percent of at least one ester of methacrylic acid or a vinyl aromatic monomer, 10 to 59.95 weight percent of at least one ester of acrylic acid, and from 0.05 to 10 weight percent of at least one comonomer with acid functionality, based on the total weight of monomers in the second monomer composition, is then polymerized in the presence of the first stage polymer to produce a second stage polymer.

Abstract: An aqueous copolymer dispersion is formed by emulsion polymerization of a monomer mixture comprising (a) 20 to 80 wt. % of one or more (meth)acrylic acid esters A, whose homopolymer(s) have a Tg>25° C. and at least one has a biorenewable carbon content of at least 50 wt. % of the total carbon content of the ester; (b) 19 to 79 wt. % of one or more (meth)acrylic acid esters B whose homopolymer(s) have a Tg<25° C.; (c) 0.5 to 10 wt. % of at least one monomer selected from unsaturated sulfonic, phosphoric and phosphonic acids, and unsaturated carboxylic acids, anhydrides and amides thereof; (d) up to 10% by weight of one or more functional monomers selected from hydrolysable silane compounds, epoxy-containing compounds, ureido-containing compounds and carbonyl-containing compounds, and (e) less than 5 wt. % of one or more further monomers, wherein the total percentages of comonomers (a) to (e) equals 100%.

Abstract: An aqueous polymer dispersion is produced by multistage emulsion polymerization, in which a monomer composition I comprising 19 to 29 wt % hard monomers and 64 to 74 wt % soft monomers is polymerized to produce a first polymer phase and then a monomer composition II comprising 65 to 95 wt % hard monomers and 5 to 35 wt % soft monomers is polymerized to produce a second polymer phase. Monomer composition I also comprises from 1 to 5 wt % of at least one monomer selected from ethylenically unsaturated sulfonic acids, phosphonic acids, phosphoric acids, carboxylic acids, carboxylic amides, carboxylic anhydrides and mixtures thereof and 1 to 7.5 wt % of ethylenically unsaturated monomers containing keto groups. The weight ratio of monomer composition I to monomer composition II ranges from 50:50 to 65:35 and the polymer dispersion also contains a water-soluble cross-linking component selected from polyfunctional carboxylic hydrazides and/or polyfunctional amines.

Abstract: An aqueous copolymer dispersion is formed by emulsion polymerization of a monomer mixture comprising (a) 20 to 80 wt. % of one or more (meth)acrylic acid esters A, whose homopolymer(s) have a Tg>25° C. and at least one has a biorenewable carbon content of at least 50 wt. % of the total carbon content of the ester; (b) 19 to 79 wt. % of one or more (meth)acrylic acid esters B whose homopolymer(s) have a Tg<25° C.; (c) 0.5 to 10 wt. % of at least one monomer selected from unsaturated sulfonic, phosphoric and phosphonic acids, and unsaturated carboxylic acids, anhydrides and amides thereof; (d) up to 10% by weight of one or more functional monomers selected from hydrolysable silane compounds, epoxy-containing compounds, ureido-containing compounds and carbonyl-containing compounds, and (e) less than 5 wt. % of one or more further monomers, wherein the total percentages of comonomers (a) to (e) equals 100%.

Abstract: An aqueous copolymer dispersion comprises at least one copolymer formed from a mixture comprising one or more main monomers selected from the group consisting of one or more vinyl esters of C1-C18 alkanoic acids, vinyl esters of aromatic acids, olefins, dienes, esters of ethylenically unsaturated carboxylic acids, vinylaromatics, and vinylhalogenides; from 0.05 to 5% by weight of one or more ethylenically unsaturated polycarboxylic acids or anhydrides thereof; from 0.05 to 10% by weight of one or more ethylenically unsaturated epoxy-containing compounds; and from 0.05 to 5% by weight of one or more hydrolyzable silicon compounds; wherein all percents are % by weight based on the total weight of the main monomers in the mixture.

Abstract: In a multi-stage emulsion polymerization process, a first monomer composition comprising from about 60 weight percent to about 95 weight percent of at least one vinyl ester, and from about 5 weight percent to about 40 weight percent ethylene is polymerized in a first stage under ethylene pressure to produce a first stage product having a Tg of less than 20° C. Then, in a second stage, a second monomer composition comprising at least 95 weight percent of a meth(acrylic)ester or a mixture of at least two different (meth)acrylic esters is polymerized in the presence of said first stage product, wherein the (meth)acrylic ester(s) is selected such that the polymer produced by said second monomer composition has a Tg of 5 to 90° C.

Abstract: An aqueous cross-linkable copolymer dispersion is formed by emulsion polymerization of a monomer mixture comprising at least one ethylenically unsaturated main monomer and at least one 1,3-dicarbonyl functionalized monomer and lysine or a salt thereof.

Abstract: An aqueous coating composition comprises (a) an aqueous polymer dispersion formed by emulsion polymerization of at least one ethylenically unsaturated monomer in the presence of a chain transfer agent, wherein the polymer has a Fikentscher K value less than 60; (b) at least one organic pigment; and (c) at least one inorganic filler.

Abstract: The present invention relates to a process for the emulsion polymerization of free-radically polymerizable, ethylenically unsaturated main monomers, and optionally further auxiliary monomers copolymerizable therewith, wherein the polymerization comprises a polymerization reaction phase starting with the first addition of an initiator or starting with the first addition of monomers, whatever is later, and ending with the completion of the addition of the initiator or the completion of the addition of total monomers, whatever is later, wherein the reaction temperature is increased during said polymerization reaction phase from a start temperature in the range of about 30° C. to about 85° C. to an end temperature in the range of about 60° C. to about 160° C., and wherein the polymerization temperature is increased for at least 25% of the duration of said polymerization reaction phase.

Abstract: What are described are coating compositions comprising pigments and/or fillers and multistage polyvinyl ester dispersions as binders. These binders are produced by a selected multistage process in which a polyvinyl ester dispersion is obtained in a first stage, monomers in dissolved or pure form or in the form of an emulsion are added to the reaction mixture in a second stage and then the polymerization is started again. The polyvinyl ester dispersions comprise polymerized silanes and/or epoxides or the polyvinyl ester dispersions have only a small content of protective colloids, if any. The coating compositions formulated with the multistage polyvinyl ester dispersions obtained in this way are notable for a very high weathering resistance.

Abstract: Aqueous copolymer dispersions for a variety of uses, including coating compositions or binders for plasters and paints, are disclosed. The aqueous copolymer dispersions may comprise one or more silicon containing compounds, in particular hydrolyzable silane compounds without any additional reactive group.

Abstract: An aqueous polymer composition is described comprising a homogeneous acrylic polymer dispersion produced by emulsion polymerization of a monomer mixture comprising: (A) from 85 to 99.9 wt % of one or more main monomers selected from C1-C12-alkyl esters of acrylic acid or C5-C12-alkyl esters of methacrylic acid, styrene, and vinyl toluene in such a ratio as to produce a polymer having a Tg in the range of ?20 to +65° C.; and (B) from 0.1 to 5 wt % of at least one stabilizing monomer selected from ethylenically unsaturated monocarboxylic acids or amides thereof, ethylenically unsaturated dicarboxylic acids or anhydrides or amides thereof, ethylenically unsaturated sulfonic acids, ethylenically unsaturated phosphoric acids, and ethylenically unsaturated phosphonic acids. The emulsion polymerization is conducted in the presence of 0.05 to 3 wt %, based on the total weight of monomers in the monomer mixture, of a chain transfer agent (C).

Abstract: A wood protection paint comprises a copolymer emulsion prepared by an emulsion polymerization process, in which a first monomer composition comprising from 60 weight percent to 95 weight percent of at least one vinyl ester, and from 5 weight percent to 40 weight percent ethylene is polymerized in a first stage under ethylene pressure to produce a first stage product having a Tg of less than 25° C. Then, in a second stage, a second monomer composition selected such that the polymer produced by the second monomer composition has a Tg of at least 95° C.

Abstract: In a multi-stage emulsion polymerization process, a first monomer composition comprising from about 60 weight percent to about 95 weight percent of at least one vinyl ester, and from about 5 weight percent to about 40 weight percent ethylene is polymerized in a first stage under ethylene pressure to produce a first stage product having a Tg of less than 20° C. Then, in a second stage, a second monomer composition comprising at least 95 weight percent of a meth(acrylic)ester or a mixture of at least two different (meth)acrylic esters is polymerized in the presence of said first stage product, wherein the (meth)acrylic ester(s) is selected such that the polymer produced by said second monomer composition has a Tg of 5 to 90° C.

Abstract: A wood protection paint comprises a copolymer emulsion prepared by an emulsion polymerization process, in which a first monomer composition comprising from 60 weight percent to 95 weight percent of at least one vinyl ester, and from 5 weight percent to 40 weight percent ethylene is polymerized in a first stage under ethylene pressure to produce a first stage product having a Tg of less than 25° C. Then, in a second stage, a second monomer composition selected such that the polymer produced by the second monomer composition has a Tg of at least 95° C.

Abstract: Aqueous copolymer dispersions for a variety of uses, including coating compositions or binders for plasters and paints, are disclosed. The aqueous copolymer dispersions may comprise one or more silicon containing compounds, in particular hydrolyzable silane compounds without any additional reactive group.

Abstract: Plasters and renders and paints, copolymer dispersions and their use Compositions containing selected polymer dispersions, colloidal silica, fillers and pigments are described. These can be formulated to give plasters and renders or paints which are distinguished by excellent abrasion resistance, little tendency to soiling, high water vapor permeability, good adhesion and good weathering stability. The compositions according to the invention can be processed to give plasters and renders or paints which have a nanostructured surface and which differ from conventionally produced surfaces.