发明名称 |
SURFACTANT FOR POLYISOCYANURATE FOAMS MADE WITH ALTERNATIVE BLOWING AGENTS |
摘要 |
A closed cell, rigid polyisocyanurate foam which comprises the reaction product of a polyisocyanate and a polyol in the presence of (a) a hydrogen-containing blowing agent or a mixture of a hydrogen-containing blowing agent and at least one co-blowing agent, and (b) a siloxane oxyalkylene copolymer (i) having a molecular weight below about 7500 and an oxyalkylene portion containing greater than 60 weight percent of oxyethylene units and (ii) being prepared by the reaction of an organohydrogensiloxane with a polyoxyalkylene in an essentially solventless system or in the presence of a high boiling point polar polyol.
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申请公布号 |
CA2118466(A1) |
申请公布日期 |
1995.04.26 |
申请号 |
CA19942118466 |
申请日期 |
1994.10.19 |
申请人 |
CELOTEX CORPORATION (THE) |
发明人 |
LONDRIGAN, MICHAEL E.;TROUT, KENNETH G. |
分类号 |
C08G18/09;C08G18/42;C08J9/12;C08J9/14;(IPC1-7):C08L75/04;C08L83/06 |
主分类号 |
C08G18/09 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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