发明授权
US5026738A Process for the production of rigid foam comprising acrylic and/or
methacrylic polymers without using fluorocarbons as a foaming agent
失效
用于生产包含丙烯酸和/或甲基丙烯酸聚合物的硬质泡沫的方法，而不使用碳氟化合物作为发泡剂
- 专利标题： Process for the production of rigid foam comprising acrylic and/or methacrylic polymers without using fluorocarbons as a foaming agent
- 专利标题（中）： 用于生产包含丙烯酸和/或甲基丙烯酸聚合物的硬质泡沫的方法，而不使用碳氟化合物作为发泡剂
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申请号： US466320申请日： 1990-05-03
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公开(公告)号： US5026738A公开(公告)日： 1991-06-25
- 发明人: Stefan Meinhard
- 申请人： Stefan Meinhard
- 申请人地址： DEX Munich
- 专利权人： Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
- 当前专利权人： Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.
- 当前专利权人地址： DEX Munich
- 优先权： DEX3738624 19871113
- 主分类号： C08F4/34
- IPC分类号： C08F4/34 ; C08F20/06 ; C08F20/10 ; C08F220/04 ; C08F220/10 ; C08J9/10 ; C08J9/14
摘要：
Rigid foam is produced without using fluorocarbons as a foaming agent by ing an oligomer mixture of monomer and dimers to heximers, flame retardant, nitrogen liberating catalysts, cell regulating agents, foam stabilizer and foam regulator, crosslinking agents and wetting agent, preheating the mixture, and pouring the mixture into a mold, keeping the temperature at a value from 50.degree. to 70.degree. C. and upon completed polymerization removing the product from the mold.
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