Patent ID: 6627724
Filing Date: 2003-09-30
Classification: A61L,C08G,Y10S,Y10T

Abstract:
A polyurethane elastomeric composition comprising a hard segment and a soft segment, wherein the soft segment is formed from(a) a combination of at least one polyether macrodiol and at least one polycarbonate macrodiol, wherein the polyether macrodiol is a compound of the formula: HOâ€”[(CH2)mâ€”O]nâ€”H â€ƒwherein m is an integer of 4 or more; and n is an integer from 2 to 50; and (b) at least one polysiloxane macrodiol of the formula (I): â€ƒwherein R1, R2, R3, R4, R5, and R6 are each independently an optionally substituted straight chain, branched or cyclic, saturated or unsaturated hydrocarbon radical; and n is an integer from 1 to 100.