发明名称 |
Methods and compositions for preparing rigid forms with non-chlorofluorocarbon blowing agents |
摘要 |
Disclosed are methods and compositions for preparing rigid foams by contacting a polyisocyanate with a polyol mixture comprising (a) from about 40-95% by weight of a polyester or polyether polyol; (b) a catalytic amount of a catalyst system comprising a primary catalyst and an amino acid salt catalyst derived from sarcosine; and (c) a non-chlorofluorocarbon blowing agent.
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申请公布号 |
US5407967(A) |
申请公布日期 |
1995.04.18 |
申请号 |
US19940238388 |
申请日期 |
1994.05.05 |
申请人 |
STEPAN COMPANY |
发明人 |
WILLIAMS, STEVE;KAPLAN, WARREN;NEILL, PAUL;CHAPA, GERARDO |
分类号 |
C08G18/16;C08G18/22;C08J9/14;(IPC1-7):C08G18/16 |
主分类号 |
C08G18/16 |
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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