Patent ID: 6420452
Filing Date: 2002-07-16
Classification: A61L,C07F,C08G

Abstract:
A polyurethane composition comprising a reaction product of:(i) a soft segment macrodiol; (ii) a diisocyanate; and (iii) a chain extender including a silicon-containing diol of the formula (I): wherein R1, R2, R3 and R4 are independently an optionally substituted straight chain, branched or cyclic, saturated or unsaturated hydrocarbon radical; R5 and R6 are independently an optionally substituted straight chain, branched or cyclic alkylene, alkenylene, alkynylene or heterocyclic radical; R7 is a divalent linking group of an optionally substituted straight chain, branched or cyclic, saturated or unsaturated hydrocarbon radical; and, n is 0 or greater.