Patent ID: 7238745

Claim:
An aqueous polyurethane/urea dispersion comprising: i) an aqueous medium and ii) a polyurethane/urea comprising A) at least one alkoxysilane group of formula (I) —X—CO—NR 2 —Y—Si—(Z) 3 (I) wherein X is O: each occurrence of R 2 is H; Y is selected from C 1 -C 8 linear and branched alkylene; and each occurrence of Z is independently selected from organic groups that are inert to isocyanate groups below 100° C., provided that at least one group is an alkoxy group containing from 1 to 4 carbon atoms; and B) anionic and optionally nonionic hydrophilic moieties, wherein the polyurethane/urea comprises the reaction product of a polyisocyanate with an isocyanate-reactive component comprising a polyester or a polycarbonate polyol having a number average molecular weight of at least 500.