Polymer polylol, its prepn. method and prepn. of tough polyurethane foam

Application Number: 00126326
Application Date: 2000.09.07
Publication Number: 1298893
Publication Date: 2001.06.13
Priority Information: 1995/2/14 JP 025150/1995; 1994/4/12 JP 073250/1994; 1994/4/12 JP 073251/1994; 1994/5/20 JP 106432/1994
International: C08G18/48;C08G65/02
Applicant(s) Name: Mitsui Chemical Industry Co., Ltd.
Inventor(s) Name: Okubo Kazuhiko;Tsutsui;Hiroyoshi;Sakaki Yoshitsugu
Patent Agency Code: 11038
Patent Agent: liu jinhui
Abstract A polymer polyol is prepared by polymerizing an ethylenically unsaturated monomer in the polyoxyalkylene polyol. A flexible polyurethane foam is prepared by reacting the polyoxyalkylene polyol or the polymer polyol with an organic polyisocyanate compound in the presence of a foaming agent, a catalyst, a surfactant, a crosslinking agent and other additives. The thus-obtained polyurethane foams have less closed cells and are more excellent in properties such as hardness, humid aged compression set and impact resiliency.