Catalyst system for adherent rigid foam

摘要

A thermosetting unsaturated polyester-polyurethane hybrid foam resin composition is made without significant blistering by using a 2-component catalyst system-one which initiates at room temperature and one which initiates at a temperature of at least 75 DEG C. and has a one-hour half-life temperature of at least 90 DEG C.; the composition has a room temperature stability of at least thirty days.