发明名称 |
Diphenylmethane diisocyanate-based liquid polyisocyanate mixtures containing urethane groups, process for their preparation and their use for the preparation of flexible polyurethane foams |
摘要 |
Diphenylmethane diisocyanate-based liquid polyisocyanate mixtures containing urethane groups and having an isocyanate content of from 12 to 30 percent by weight are obtained by reaction of a polyoxypropylene polyoxyethylene polyol containing 5 to 30 percent by weight of oxyethylene with diphenylmethane diisocyanate-based isocyanates. These polyisocyanate mixtures are storage stable at low temperature and yield flexible polyurethane foams having improved mechanical properties.
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申请公布号 |
US4478960(A) |
申请公布日期 |
1984.10.23 |
申请号 |
US19830544257 |
申请日期 |
1983.10.21 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
BUETHE, INGOLF;MARX, MATTHIAS;SCHLEIER, GISBERT;PETERS, REINHARD |
分类号 |
C08G18/10;C08G18/48;C08G18/76;(IPC1-7):C08G18/14;C08G18/70;C07C143/82 |
主分类号 |
C08G18/10 |
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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