Abstract: Polyvinyl acetals with low solution viscosities and maximum Newtonian flow behavior contain sulphonate-functional vinyl ether or sulphonate-functional allyl ether units in addition to conventional vinyl ester, vinyl alcohol, and vinyl acetal units.

Abstract: Polyvinyl acetals with low solution viscosities and maximum Newtonian flow behavior contain sulphonate-functional vinyl ether or sulphonate-functional allyl ether units in addition to conventional vinyl ester, vinyl alcohol, and vinyl acetal units.

Abstract: Non-blocking solid vinyl ester copolymer resins have at least two different glass transition temperatures and are prepared by free-radical bulk or solution polymerization of 1. a) 50% to 97 % by weight of one or more comonomers M1 selected from vinyl esters of optionally branched C1-15 alkylcarboxylic acids and optionally alpha-olefin(s), monomers M1 producing homopolymers with a Tg<40° C., with b) 3% to 50% by weight of one or more comonomers M2 selected from vinylaromatics, (meth)acrylic acid and esters or amides thereof, and acrylonitrile, the comonomers M2 producing homopolymers having a Tg>50° C., wherein respecting the copolymerization of comonomers M1 with comonomers M2, the copolymerization parameters r1<0.2 and r2>2.0, and wherein some or all of comonomers M2, and at least 3% by weight are introduced before the start of the polymerization.

Abstract: Solid polyvinyl acetate resins functionalized by acid groups which also contain terminal carboxy groups besides carboxy-functional comonomer units display superior properties as low profile additives for unsaturated polyester resins.

Abstract: Softness-modified polyvinyl acetal resins are obtained via hydrolyzing copolymers of vinyl acetate and C9-15 monocarboxylic acids, which contain from 5 to 60% by weight of tertiary vinyl ester, and subsequently acetalizing with one or more C1-6 aliphatic aldehydes.

Abstract: Polyvinyl acetals with a high degree of acetalization and low solution viscosity are prepared by acetalizing partly or fully hydrolyzed polyvinyl ester polymers dissolved or slurried in aldehyde.

Abstract: The invention relates to a process for preparing solid polyvinyl ester resins using a bulk or solution polymerization process in the presence of a chain transfer agent, wherein one or more vinyl esters of unbranched or branched alkyl carboxylic acids having 1 to 15 carbon atoms are polymerized in the presence of a compound selected from the group consisting of monovalent aliphatic alcohols having 1 to 6 carbon atoms, esters of aliphatic monocarboxylic acids and aliphatic alcohols each having 1 to 4 carbon atoms, or aliphatic ketones having 3 to 6 carbon atoms.

Abstract: The invention relates to a process for preparing solid polyvinyl ester resins using a bulk or solution polymerization process in the presence of a chain transfer agent, wherein one or more vinyl esters of unbranched or branched alkyl carboxylic acids having 1 to 15 carbon atoms are polymerized in the presence of a compound selected from the group consisting of monovalent aliphatic alcohols having 1 to 6 carbon atoms, esters of aliphatic monocarboxylic acids and aliphatic alcohols each having 1 to 4 carbon atoms, or aliphatic ketones having 3 to 6 carbon atoms.

Abstract: A textile binder in the form an aqueous copolymer dispersion or of a copolymer powder obtainable by means of free-radical emulsion polymerization of a) one or more monomers from the group consisting of vinyl esters, esters of acrylic acid and methacrylic acid, vinylaromatics, vinyl halides and alpha-olefins and b) from 0.01 to 10% by weight, based on the overall weight of the copolymer, of one or more monomers b1) from the group consisting of the N-(alkoxymethyl)acrylamides and N-(alkoxymethyl)-methacrylamides or one or more monomers b2) from the group consisting of N-methylolacrylamide and N-methylolmethacrylamide, or mixtures b1) and b2), where as emulsifier(s) from 0.01 to 10% by weight, based on the overall weight of the copolymer, of one or more emulsifiers from the group of the monoesters or diesters of sulfosuccinic acid with linear, unbranched or branched, or cycloaliphatic alcohols, are employed or are added to the aqueous copolymer dispersion after the end of the emulsion polymerization.

Abstract: The invention provides a process for improving the resistance to solvents in finishing and stabilizing fiber materials with textile binders, wherein the textile binder used is an aqueous copolymer dispersion or a redispersible copolymer powder of copolymers with a T.sub.g of -60.degree. C. to +60.degree. C., containing (a) one or more monomer units from the group consisting of vinyl esters of unbranched or branched carboxyli acids with 1 to 12 carbon atoms, esters of acrylic acid and methacrylic acid with unbranched or branched alcohols with 1 to 12 carbon atoms, vinyl aromatics, vinyl halides and .alpha.-olefins, and (b) 0.3 to 10 wt %, relative to the total weight of the copolymer, of one or more N-(alkoxymethyl)-acrylamides or N-(alkoxymethyl)methacrylamides with a C.sub.1 -C.sub.6 alkyl residue, or mixtures of these N-(alkoxymethyl)-meth(acrylamides with N-Methylolacrylamide and/or N-methylolmethacrylamide in a weight ratio of N-methylol compound to N-(alkoxymethyl) compound of at most 5:1.