Patent ID: 7732554
Filing Date: 2010-06-08
Classification: C08G

Abstract:
1. A process for preparing a curable silylated polyurethane resin which comprises: a) silylating hydroxyl-terminated polyurethane polymer obtained from the reaction of polyol with di-isocyanate and/or polyisocyanate and optionally containing residual di-isocyanate and/or polyisocyanate with isocyanatosilane under anhydrous conditions to provide silylated polyurethane possessing residual hydroxyl groups and containing residual isocyanate selected from the group consisting of di-isocyanate, polyisocyanate and isocyanatosilane: and, b) scavenging residual isocyanate present in the silylated polyurethane with at least one isocyanate-reactive scavenging agent to provide silylated polyurethane resin of reduced isocyanate content,