Abstract: The invention relates to water-redispersible dispersion powder compositions based on polymers of one or more ethylenically unsaturated monomers, wherein one or more gemini surfactants are present.

Abstract: The invention relates to silane modified additives obtained by condensation of one or a plurality of silanes of the general formula (RO)3-nR1nSi(R2X)(1), wherein R is an optionally substituted alkyle, aryle or alkoxyalkyl radical with 1 to 10 carbon atoms or hydrogen, R1 an optionally substituted hydrocarbon radical with 1 to 12 carbon atoms or hydrogen, R2 an optionally substituted alkylene radical with 1 to 20 carbon atoms, wherein methylene units that are not adjacent to one another can be substituted by groups —O—, and X is bound to R2 via a covalent bond and stands for an amino radical NHR3, an epoxy radical CR4(O)CR5R6, an urethane radical NR3—C(?O)OR3, an urea radical NR3—C(?O)NR3R4, a phosphorous acid radical P(?O)(OH)2, an anhydride radical C(?O)O(O?)CR3 or a carbon acid radical, wherein R3 is hydrogen or an optionally substituted alkyle, aryle or amino alkyle radical with 1 to 10 carbon atoms, R4, R5, R6 hydrogen or an optionally substituted alkyle or aryle radical with 1 to 10 carbon atoms, wherein

Abstract: Water-redispersible polymer powder compositions are obtained by means of free-radical-initiated polymerization in aqueous medium of one or more monomers of vinyl esters of unbranched or branched alkylcarboxylic acids having from 1 to 15 carbon atoms, methacrylic esters and acrylic esters of alcohols having from 1 to 15 carbon atoms, vinylaromatics, olefins, dienes and vinyl halides and subsequent drying of the polymer dispersion, wherein one or more silanes of the general formula (RO)3?nR1nSiR2X (1) where X is an amino- or epoxy-containing radical are added before drying of the polymer dispersion. The powders are especially useful in tile adhesives for tiles having low water absorbtion capacity.

Abstract: The invention relates to silane modified additives obtained by condensation of one or a plurality of silanes of the general formula (RO)3-nR1nSi(R2X)(1), wherein R is an optionally substituted alkyle, aryle or alkoxyalkyl radical with 1 to 10 carbon atoms or hydrogen, R1 an optionally substituted hydrocarbon radical with 1 to 12 carbon atoms or hydrogen, R2 an optionally substituted alkylene radical with 1 to 20 carbon atoms, wherein methylene units that are not adjacent to one another can be substituted by groups —O—, and X is bound to R2 via a covalent bond and stands for an amino radical NHR3, an epoxy radical CR4(O)CR5R6, an urethane radical NR3—C(?O)OR3, an urea radical NR3—C(?O)NR3R4, a phosphorous acid radical P(?O)(OH)2, an anhydride radical C(?O)O(O?)CR3 or a carbon acid radical, wherein R3 is hydrogen or an optionally substituted alkyle, aryle or amino alkyle radical with 1 to 10 carbon atoms, R4, R5, R6 hydrogen or an optionally substituted alkyle or aryle radical with 1 to 10 carbon atoms, wherein

Abstract: The invention relates to water-redispersible polymer powder compositions obtainable by means of free-radical-initiated polymerization in aqueous medium of one or more monomers from the group consisting of vinyl esters of unbranched or branched alkylcarboxylic acids having from 1 to 15 carbon atoms, methacrylic esters and acrylic esters of alcohols having from 1 to 15 carbon atoms, vinylaromatics, olefins, dienes and vinyl halides and subsequent drying of the polymer dispersion obtained, characterized in that one or more silanes of the general formula (RO)3-nR1nSiR2X (1) are added before or during the polymerization or before drying of the polymer dispersion, and also their use in tile adhesives.

Abstract: The invention relates to water-redispersible dispersion powder compositions based on polymers of one or more ethylenically unsaturated monomers, wherein one or more gemini surfactants are present.