发明名称 |
Tertiary amine catalysts for polurethanes |
摘要 |
The invention pertains to tertiary amines used as catalysts for the preparation of polyurethane foams prepared via the catalytic reaction of a polyisocyanate with a polyol in the presence of blowing agents, etc. The tertiary amine catalysts are prepared by reacting an olefinic nitrile with aliphatic polyol having at least secondary hydroxyl functionality in a ratio less than stoichiometric for providing cyanoalkylated polyol having residual hydroxyl functionality. The resulting cyanoalkylated polyol then is reacted with a secondary amine under conditions for effective reductive alkylation. The tertiary amine catalysts, because of residual secondary hydroxyl functionality, provide for uniform dispersion within a polyurethane, formulation; they provude for additional or extended pot life in polyurethane formulations at temperature below reaction condition, and they are bound by reaction on cure.
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申请公布号 |
US5091583(A) |
申请公布日期 |
1992.02.25 |
申请号 |
US19910697859 |
申请日期 |
1991.05.09 |
申请人 |
AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
CASEY, JEREMIAH P.;CARR, RICHARD V. C.;WASILCZYK, GEORGE J.;PETRELLA, ROBERT G. |
分类号 |
C07C217/08;C07D295/088;C08G18/18;C08G18/20 |
主分类号 |
C07C217/08 |
代理机构 |
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