Patent ID: 7981821

Claim:
A poly(urethane-urea) comprising segments derived from (a) a diisocyariate or mixture of diisocyanates; (b) a polyether polyol comprising repeating units of general formula —[(CH 2 ) m O]— wherein each m is the same or different and is 3 or 4, or a mixture of said polyether polyols; and (c) a diamine or mixture of diamines, wherein said polyether polyol segment(s) (b) make up at least 70% by weight of the dry poly(urethane-urea) and wherein the ether oxygen atoms of said polyether polyol segment(s) (b) make up at least 15% by weight of the dry poly(urethane-urea); and wherein said poly(urethane-urea) has an amine end group content of up to 0.2% by weight.