Patent ID: 6586522
Filing Date: 2003-07-01
Classification: C03C,C08G,D06M

Abstract:
A water- and oil-repellent composition comprising(a) a repellency-imparting, fluorochemical composition comprising at least one fluorine-containing aromatic ester oligomer comprising (1) at least two repeat units from the reaction of at least one dicarboxylic acid and at last one polyol, with the proviso that at least one of said dicarboxylic acid and said polyol is aromatic or heteroaromatic, and (2) fluorochemical endgroups from the reaction of (i) said dicarboxylic acid and at least one fluorine-containing monoalcohol, and (ii) said polyol and at least one fluorine-containing monocarboxylic acid; and (b) a treatable substrate; with the proviso that, when said treatable substrate comprises a mixture of at least two polymers, said mixture is non-stratifying; and wherein said composition is a melt blend of (a) and (b).