发明名称 |
URETHANE MODIFIED POLYISOCYANATES |
摘要 |
Urethane-modified polyisocyanates having an NCO-content of from 5 to 45 wt. % are made by reacting an organic polyisocyanate or mixture of polyisocyanates having an NCO-content of from 30 to 50 wt. % with an organic polyhydroxyl compound or mixtures of polyhydroxyl compounds. The organic polyhydroxyl compound must include at least 10 hydroxyl equivalent percent of an alkoxylation product of a bisphenol corresponding to a specified formula containing two alcoholic hydroxyl groups and having an OH number of from 112 to 389. The reactants are employed in quantities such that the NCO:OH equivalent ratio is from 2:1 to 50:1. The urethane-modified polyisocyanates of the present invention are particularly useful in the production of polyurethanes by the isocyanate polyaddition process. |
申请公布号 |
AU3755885(A) |
申请公布日期 |
1985.07.18 |
申请号 |
AU19850037558 |
申请日期 |
1985.01.09 |
申请人 |
BAYER A.G. |
发明人 |
WERNER RABHOFER;RICHARD KOPP;REINER PAUL;KLAUS SEEL;OTTO GANSTER |
分类号 |
C08G18/00;C08G18/10;C08G18/32;C08G18/48;C08G18/78;C08G18/80 |
主分类号 |
C08G18/00 |
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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