发明名称 |
Process and catalyst for the production of polyisocyanurate foams made with alternative blowing agents |
摘要 |
Rigid, closed cell polyisocyanurate foams are prepared by reacting together a polyisocyanate and a polyester polyol or a mixture of a polyester polyol and at least one other isocyanate-reactive compound 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 catalyst mixture comprising (i) a carboxylate salt of an alkali metal or an alkaline earth metal or mixtures thereof, (ii) a quaternary ammonium carboxylate salt, and (iii) optionally a tertiary amine, wherein the mole ratio of carboxylate metal salt: tertiary amine is a value greater than about 2:1, and the total moles of quaternary ammonium carboxylate salt are less than the combined moles of the carboxylate metal salt and the tertiary amine. <IMAGE> |
申请公布号 |
GB2288182(A) |
申请公布日期 |
1995.10.11 |
申请号 |
GB19950005611 |
申请日期 |
1995.03.20 |
申请人 |
* THE CELOTEX CORPORTATION |
发明人 |
MICHAEL J * SKOWRONSKI;KENNETH G * TROUT |
分类号 |
B01J31/02;B01J31/04;C08G18/16;C08G18/18;C08G18/22;C08G18/42;C08J9/14;(IPC1-7):C08G18/16;B01J35/12 |
主分类号 |
B01J31/02 |
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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