发明名称 |
Method for the preparation of low-viscosity (poly) isocyanates |
摘要 |
A low viscosity polyisocyanate composition containing at least one isocyanate dimer having a uretidinedione unit is prepared from a reaction medium containing at least one isocyanate monomer in which the isocyanate groups are borne by sp<3 >carbon atoms. The reaction medium is heated, in the absence of a dimerization catalyst, to a temperature of at least 50° C. and not more than 200° C. for a period of not more than 24 hours.
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申请公布号 |
US2004106762(A1) |
申请公布日期 |
2004.06.03 |
申请号 |
US20030682412 |
申请日期 |
2003.10.10 |
申请人 |
RHODIA CHIMIE |
发明人 |
CHARRIERE EUGENIE;BERNARD JEAN-MARIE;REVELANT DENIS;RANDU STEPHANE;CARLO MICHEL |
分类号 |
C08G18/02;C08G18/09;C08G18/32;C08G18/62;C08G18/78;C08G18/79;C08G18/80;C09D175/04;(IPC1-7):C08G18/00 |
主分类号 |
C08G18/02 |
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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