发明名称 |
A catalyst and a method for the trimerization of isocyanates. |
摘要 |
Method for preparation of polyisocyanates and polyisocyanurates by catalytic cyclotrimerization of isocyanates uses catalyst based on a quaternary ammonium salt with imidazole, or one of its derivatives, as co-catalyst. An Independent claim is also included for a polymer composition produced by said method. |
申请公布号 |
ZA9810038(B) |
申请公布日期 |
2000.05.03 |
申请号 |
ZA19980010038 |
申请日期 |
1998.11.03 |
申请人 |
RHODIA CHIMIE |
发明人 |
DENIS REVELANT;JEAN-MARIE BERNARD |
分类号 |
B01J31/02;C07D233/54;C08G18/02;C08G18/18;C08G18/20;C08G18/38 |
主分类号 |
B01J31/02 |
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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