Patent ID: 6979711
Filing Date: 2005-12-27
Classification: C08F,D06M

Abstract:
1. An improved process for producing an oil and water repellent finish for textiles which comprises emulsion polymerization of a perfluoro(meth)acrylate ester with one or more hydrophilic group-containing esters wherein the improvement comprises polymerization in an aqueous solution containing 0.1 to 4.9% by weight of dipropylene glycol monomethyl ether acetate (CH 3 O(CH 2 ) 3 O(CH 2 ) 3 OCOCH 3 ) or propylene glycol diacetate (CH 3 OCO(CH 2 ) 3 OCOCH 3 ) relative to the water, wherein the copolymer is comprised of monomers copolymerized in the following percentages by weight: (a) from about 50% to about 85% of a monomer of formula I: (b) from about 10% to about 25% of a monomer of formula II: (c) from 0.1% to about 5% of a monomer of the formula III (d) from 0.1% to about 5% of a monomer of the formula IV: (e) from 0.1% to about 3% of a monomer of the formula V: (f) and optionally, from 0% up to about 10% of vinylidene chloride (formula VI) or vinyl acetate (formula VII), or a mixture thereof: wherein R