PROCESS FOR PRODUCTION OF POLYMER POLYOL, AND POLYMER POLYOL

摘要

A polymer polyol consisting of 25 to 60 % by mass of a polyol (A) and 40 to 75 % by mass of polymer particles (B1) formed by polymerizing in the polyol (A) an ethylenically unsaturated monomer component containing acrylonitrile and/or styrene in an amount of 50 % by mass or above, wherein the particles (B1) have particle diameters of 100 mum or below with the proportion of particles of 0.01 to 10 mum in diameter being at least 95 % by mass and the total content of acrylonitrile and styrene in the polymer polyol is 20 ppm or below; and a process for producing the polymer polyol. The polymer polylol exhibits a reduced residual monomer content and excellent filterability and is useful as a raw material in the production of polyurethane or the like.