发明授权
US6080800A Aqueous wax dispersions as cell openers in making polyurethane flexible
foams
失效
水性蜡分散体作为制备聚氨酯柔性泡沫体的开孔剂
- 专利标题： Aqueous wax dispersions as cell openers in making polyurethane flexible foams
- 专利标题（中）： 水性蜡分散体作为制备聚氨酯柔性泡沫体的开孔剂
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申请号： US280341申请日： 1999-03-29
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公开(公告)号： US6080800A公开(公告)日： 2000-06-27
- 发明人: John Herbert Frey , Allen Robert Arnold, Jr. , Timothy Charles Boyer , Kevin Rodney Lassila
- 申请人： John Herbert Frey , Allen Robert Arnold, Jr. , Timothy Charles Boyer , Kevin Rodney Lassila
- 申请人地址： PA Allentown
- 专利权人： Air Products and Chemicals, Inc.
- 当前专利权人： Air Products and Chemicals, Inc.
- 当前专利权人地址： PA Allentown
- 主分类号： C08G18/00
- IPC分类号： C08G18/00 ; C08G18/76 ; C08G101/00 ; C08J9/00 ; C08J9/08 ; C08J9/14 ; C08K5/01 ; C08K5/103 ; C08K5/5415
摘要：
A method for preparing a flexible or semi-flexible polyurethane foam by reacting an organic polyisocyanate with a polyol in the presence of urethane catalyst, water as a blowing agent, optionally a silicone surfactant, and a cell opening additive characterized in that the cell opening additive comprises an aqueous dispersion of particles comprising a wax substance and optionally an emulsifier, at least 35% of the particles having a size of 0.2 to 5 microns and a melting point which ranges from 0 to 55.degree. C. below the maximum foam exotherm temperature.
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