The manner null which makes residual monoma - in hypoviscosity polymer - polio - ru

摘要

An improved process is provided for preparing stable low viscosity polymer-polyols containing less than about 100 ppm residual monomers by using a monoperoxycarbonate initiator in combination with at least one initiator selected from diperoxyketals and peroxyesters, as chaser catalysts, at or near the end of the polymerization. The polymer- polyols prepared by the instant invention can be used to prepare high resiliency (load bearing) polyurethane foams.