发明名称 |
Liquid polyisocyanate compositions |
摘要 |
Liquid polyisocyanate compositions comprising: (A) from 90 to 50% by weight of a reaction product of diphenylmethane diisocyanate and a polyoxyalkylene polyol having an average functionality of 2-3 comprising from 50-100% by weight of a polyoxypropylene diol or triol having a hydroxyl equivalent weight of from 750 to 3000 and from 0-50% by weight of a polyoxyethylene diol or triol having a hydroxyl equivalent weight of from 750 to 3000, said reaction product having an NCO content of from 8 to 26% by weight, and (B) from 10 to 50% by weight of a diphenylmethane diisocyanate composition containing from 30 to 65% by weight of diphenylmethane diisocyanate, the remainder being polymethylene polyphenyl polyisocyanates of functionality greater than two together with by-products formed in the manufacture of such polyisocyanates by phosgenation. The compositions are useful in the manufacture of polyurethanes, especially cold cure flexible foams.
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申请公布号 |
US4261852(A) |
申请公布日期 |
1981.04.14 |
申请号 |
US19790080324 |
申请日期 |
1979.10.01 |
申请人 |
IMPERIAL CHEMICAL INDUSTRIES LIMITED |
发明人 |
CARROLL, WILLIAM G.;WATTS, ARUN |
分类号 |
C08G18/10;C08G18/48;C08G18/72;C08G18/76;(IPC1-7):C08G18/08;C09K3/00 |
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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