| 发明名称 |
METHOD FOR PRODUCING POLYISOCYANATE |
| 摘要 |
<p>Disclosed is a method for producing a polyisocyanate, which comprises a contact step wherein a reaction liquid obtained by reacting a polyamine with phosgene is brought into contact with a zeolite at 60-230°C, and a heating step wherein the reaction liquid, which has been brought into contact with a zeolite in the contact step, is heated at 180-230°C.</p> |
| 申请公布号 |
WO2009107655(A1) |
申请公布日期 |
2009.09.03 |
| 申请号 |
WO2009JP53403 |
申请日期 |
2009.02.25 |
| 申请人 |
NIPPON POLYURETHANE INDUSTRY CO., LTD.;MASUDA, TAKAHIRO;KANBARA, YOSHIYUKI |
发明人 |
MASUDA, TAKAHIRO;KANBARA, YOSHIYUKI |
| 分类号 |
C07C263/20;C07C263/10;C07C265/14 |
主分类号 |
C07C263/20 |
| 代理机构 |
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