发明授权
US06713521B2 Method of preparing rigid polyurethane foam and composition of rigid polyurethane foam
失效
硬质聚氨酯泡沫塑料的制备方法及硬质聚氨酯泡沫塑料的组成
- 专利标题： Method of preparing rigid polyurethane foam and composition of rigid polyurethane foam
- 专利标题（中）： 硬质聚氨酯泡沫塑料的制备方法及硬质聚氨酯泡沫塑料的组成
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申请号： US09538786申请日： 2000-03-30
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公开(公告)号： US06713521B2公开(公告)日： 2004-03-30
- 发明人: Takanori Chiba , Takuya Matsumoto , Keiji Ono , Takehiro Shimizu
- 申请人： Takanori Chiba , Takuya Matsumoto , Keiji Ono , Takehiro Shimizu
- 优先权： JP11-101245 19990408
- 主分类号： C08G1828
- IPC分类号： C08G1828
摘要：
A method of preparing a rigid polyurethane foam having improved thermal conductivity, and a composition for such rigid polyurethane foam is provided. In the preparation a rigid polyurethane foam from a composition comprising an aromatic polyisocyanate, a polyol, a blowing agent, a catalyst, a surfactant and other aids, the blowing agent is a blend of cyclopentane and water, and the polyol contains a polyether polyol prepared by addition-polymerizing an alkylene oxide to o-toluenediamine as an initiator.
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