Bonding polyvinyl butyral and polyurethane and method for obtaining same.

摘要

A polymeric laminate of a sheet containing plasticized polyvinyl butyral chemically linked by urethane groups to a polyurethane layer which is preferably thermoset and a process for inseparably bonding layers of plasticized partial polyvinyl butyral and polyurethane which comprises chemically reacting hydroxyl groups of the partial polyvinyl butyral with isocyanate groups associated with formation of the polyurethane.