发明名称 |
Amide-containing diisocyanates and preparation thereof |
摘要 |
Novel bis cyclic ureas are disclosed having the formula <IMAGE> wherein CnH2n represents alkylene from 4 to 12 inclusive and provided there are at least 4 carbon atoms in succession in the chain and R is the residue obtained by the removal of both halogen atoms from a diacid halide. The bis cyclic ureas are easily converted to a novel class of aliphatic diisocyanates simply by heating. Alternatively, they are blended with polymeric polyols to form one-component storage stable compositions which are thermally converted to polyurethane resins without any significant volatile or side product formation.
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申请公布号 |
US4190599(A) |
申请公布日期 |
1980.02.26 |
申请号 |
US19780968252 |
申请日期 |
1978.12.11 |
申请人 |
UPJOHN CO THE |
发明人 |
RICHTER, REINHARD H;TUCKER, BENJAMIN W;ULRICH, HENRI |
分类号 |
C07D243/04;C07D245/02;C08G18/70;(IPC1-7):C07C118/00;C07C119/04 |
主分类号 |
C07D243/04 |
代理机构 |
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地址 |
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