发明名称 |
CATALYST FOR 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 coblowing 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. |
申请公布号 |
CA2144490(A1) |
申请公布日期 |
1995.09.29 |
申请号 |
CA19952144490 |
申请日期 |
1995.03.13 |
申请人 |
CELOTEX CORPORATION (THE) |
发明人 |
SKOWRONSKI, MICHAEL J.;TROUT, KENNETH G. |
分类号 |
B01J31/02;B01J31/04;C08G18/16;C08G18/18;C08G18/22;C08G18/42;C08J9/14 |
主分类号 |
B01J31/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|