Aqueous emulsion copolymers containing lower alkyl hydrogen polysiloxane

Abstract From the Canadian patent

Aqueous emulsions adapted for application to textile fabrics and which provide improved water and soil resistance are supplied using aqueous emulsion copolymers of nonreactive monoethylenically unsaturated monomers providing a Tg below about 20°C with from 0.5 to 20% by weight of reactive monoethylenically unsaturated monomer providing active hydrogen preferably OH and most preferably the group and, from 1 to 40% by weight of a terminal-blocked lower alkyl hydrogen polysiloxane having a viscosity of from 20 to 1000 cP at 20°C. In preferred practice, from 0.5 to 4% by weight of the polysiloxane is used, and at least 50% by weight of the copolymer is vinyl acetate.