发明授权
US06590008B1 Process for making low density foams, polyol composition and reaction system useful therefor
有权
制备低密度泡沫的方法,多元醇组合物和对其有用的反应体系
- 专利标题: Process for making low density foams, polyol composition and reaction system useful therefor
- 专利标题(中): 制备低密度泡沫的方法,多元醇组合物和对其有用的反应体系
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申请号: US09979849申请日: 2002-03-01
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公开(公告)号: US06590008B1公开(公告)日: 2003-07-08
- 发明人: Alain Parfondry , Jianming Yu
- 申请人: Alain Parfondry , Jianming Yu
- 优先权: EP99110480 19990531
- 主分类号: C08G1810
- IPC分类号: C08G1810
摘要:
The invention relates to a polyol composition comprising by weight 60-97% of b1) a polyoxyethylene-polyoxypropylene polyol, having a functionality of 2-6, with 10-25% tipped EO, 3-40% of b2) a polyoxyethylene-polyoxypropylene polyol, having a functionality of 2-6, with 20-50% total EO and 10-20% tipped EO; and 0-25% of b3) a polyol, having a functionality of 2-6, with at least 50% random EO. The invention also relates to a process for preparing a flexible polyurethane foam by reacting a) a polyisocyanate composition; b) a polyol composition of the invention; c) water; and d) additives and auxiliaries known per se. The invention finally relates to a reaction system comprising A) a polyisocyanate and B) an isocyanate-reactive component comprising the polyol of the invention.