Processes for the preparation of a macromer and a polymer, macromer, polymer polyol, flexible polyurethane foam, and, molded article

摘要

"PROCESSES FOR PREPARING A MACROMER AND POLYMER POLYMER, MACROMER, POLYMER POLYMER, FLEXIBLE POLYURETHANE FOAM, AND, MOLDED ARTICLE". Process for the preparation of a suitable macromer as a stabilizer precursor in a polymer polyol, the process of which comprises the reaction of a polyol with a cyclic dicarboxylic acid anhydride that does not contain any polymerizable double bond and the subsequent reaction of the adduct thus obtained with a epoxy compound containing a polymerizable double bond. The resulting macromer has a nominal molecular weight of at least 4000 and can be applied to the preparation of a polymer polyol by polymerization in a polyol based on at least one ethylenically unsaturated monomer in the presence of a polymerization initiator and a macromer. The polymer polyol thus obtained is very suitable for the manufacture of flexible polyurethane foams.