Polymer/polyol compositions containing vinylidene chloride

摘要

This invention relates to novel liquid polymer/polyol compositions consisting essentially of (1) a major amount of a polyol and (2) a minor amount of an acrylonitrile-vinylidene chloride polymer consisting essentially of (a) from 45 to 5 weight percent of polymerized vinylidene chloride and (b) from 55 to 95 weight percent of another polymerized monomer of monomers of which at least 20 weight percent is polymerized acrylonitrile, said weight percents being based on the weight of the polymer, and said polymer being in the form of particles that are stably dispersed in the polyol. The polymer/polyol compositions are prepared by a free radical catalyst initiated continuous process carried out at a temperature of 100 DEG C. or higher. The novel polymer/polyols are convertible to novel polyurethane products such as high resilience polyurethane foams having improved flammability characteristics.