Emulsion polymers with improved wet scrub resistance having one or more silicon containing compounds

摘要

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.

主权项

1. An aqueous copolymer dispersion comprising at least one copolymer formed from a mixture comprising:
(a) one or more main monomers selected from the group consisting of vinyl esters of C1-C18 alkanoic acids, vinyl esters of aromatic acids, α-olefins, dienes, esters of ethylenically unsaturated carboxylic acids, vinylaromatics, and vinylhalogenides; (b) from 0.05 to 5% by weight of one or more silicon containing compounds having the formula (R1)n—Si—(OR2)4-n, wherein n is 0, 1, 2, or 3, and R1 and R2 are each independently a C1-C15 alkyl, and wherein the one or more silicon containing compounds are substantially free of any reactive groups selected from the group consisting of mercapto groups, epoxy groups, ethylenically unsaturated groups, glycidyl groups, and amino groups; (c) from 0 to 5% by weight of one or more oxirane or hydroxyl-containing functional monomers; and (d) from 0 to 10% by weight of one or more auxiliary monomers different from (a)-(c); wherein all percents are % by weight based on the total weight of the main monomers in the monomer mixture.