![一种尿素法离子液体催化制备甲苯二异氰酸酯的方法](/CN/2014/1/95/images/201410479318.jpg)
基本信息:
- 专利标题: 一种尿素法离子液体催化制备甲苯二异氰酸酯的方法
- 专利标题(英):Method for preparing toluene diisocynate from urea under catalysis of ionic liquid
- 申请号:CN201410479318.2 申请日:2014-09-18
- 公开(公告)号:CN104276982A 公开(公告)日:2015-01-14
- 发明人: 宋双田 , 郑家威 , 尚建选 , 彭述先 , 邬慧雄 , 王振宇 , 张蕾 , 杨凯宁 , 饶小峰 , 赵迪
- 申请人: 陕西煤业化工技术开发中心有限责任公司
- 申请人地址: 陕西省西安市高新区锦业路1号都市之门C座608室
- 专利权人: 陕西煤业化工技术开发中心有限责任公司
- 当前专利权人: 陕西煤业化工技术开发中心有限责任公司
- 当前专利权人地址: 陕西省西安市高新区锦业路1号都市之门C座608室
- 代理机构: 北京三聚阳光知识产权代理有限公司
- 代理人: 李敏
- 主分类号: C07C263/06
- IPC分类号: C07C263/06 ; C07C265/14 ; B01J31/02 ; B01J31/04
The invention provides application of an ionic liquid in preparing toluene diisocynate and a method for preparing the toluene diisocynate from urea under the catalysis of the ionic liquid. The method is used for preparing the toluene diisocynate by taking toluenediamine and urea as the raw materials, reacting the raw materials to generate toluene diurea under the catalytic action of the ionic liquid and then pyrolyzing the toluene diurea. The method does not need highly toxic phosgene and an extra solvent; the ionic liquid is adopted as a catalyst; on one hand, the ionic liquid is good in catalytic effect, easy to remove and environment-friendly, and on the other hand, a metal catalyst in the prior art is not used, so that the reaction of the method for preparing the toluene diisocynate from urea under the catalysis of the ionic liquid does not require harsh device materials and operating conditions, consequently, the production cost is greatly reduced, and the method is advantageous to industrial application.
公开/授权文献:
- CN104276982B 一种尿素法离子液体催化制备甲苯二异氰酸酯的方法 公开/授权日:2016-01-13
IPC结构图谱:
C | 化学;冶金 |
--C07 | 有机化学 |
----C07C | 无环或碳环化合物 |
------C07C263/00 | 异氰酸衍生物的制备 |
--------C07C263/06 | .由或经尿素 |