Patent ID: 8829122
Filing Date: 2014-09-09
Classification: C08G,C08K,C08L,C09J

Abstract:
1. Impact strength modifier comprising an isocyanate group-containing polyurethane polymer (PU1), which is synthesized from at least one polyisocyanate and at least one amphiphilic block copolymer having at least one hydroxyl group, and optionally at least one compound with at least two NCO— reactive groups, wherein the impact strength modifier has formula (I) wherein Y Y Y wherein R p=1, 2, or 3 and m and m′ each stand for numbers from 0 and 8, provided that m+m′ stands for a number from 1 to 8, and wherein the amphiphilic block copolymer having at least one hydroxyl group is a block copolymer derived from ethylene oxide and/or propylene oxide as well as at least one other alkylene oxide with at least 4 C atoms.