基本信息:
- 专利标题： PROCEDE DE DIMERISATION CATALYTIQUE D'ISOCYANATES
- 专利标题（英）：Method for catalytic dimerization of isocyanates
- 专利标题（中）：PROCESS FOR催化二聚异氰酸酯
- 申请号：EP01996571.4 申请日：2001-11-20
- 公开(公告)号：EP1352006A1 公开(公告)日：2003-10-15
- 发明人： Bernard, Jean-Marie
- 申请人： RHODIA CHIMIE
- 申请人地址： 26, Quai Alphonse Le Gallo 92512 Boulogne Billancourt Cedex FR
- 专利权人： RHODIA CHIMIE
- 当前专利权人： RHODIA CHIMIE
- 当前专利权人地址： 26, Quai Alphonse Le Gallo 92512 Boulogne Billancourt Cedex FR
- 代理机构： Colombet, Alain André
- 优先权： FR0014965 20001120; FR0014966 20001120
- 国际公布： WO02040567 20020523
- 主分类号： C08G18/16
- IPC分类号： C08G18/16 ; C08G18/02
摘要：
The invention concerns a method for preparing polyisocyanates by cyclodimerization of isocyanate functions borne by initial monomer isocyanates. The invention is characterised in that it comprises steps which consist in: a) providing a reaction medium comprising initial monomer isocyanates, optionally in the presence of a solvent; b) adding to said reaction mixture a (cyclo)dimerization catalyst comprising a compound of the family of super acids; c) heating the reaction medium to a temperature ranging between 0 °C and 300 °C, advantageously between 20 °C and 200 °C until the desired rate of transformation is obtained; d) optionally inactivating or eliminating the reaction catalyst; and e) optionally eliminating the unreacted monomer.
公开/授权文献:
- EP1352006B1 PROCEDE DE DIMERISATION CATALYTIQUE D'ISOCYANATES 公开/授权日：2007-06-27
IPC结构图谱:
| C | 化学；冶金 |
| --C08 | 有机高分子化合物；其制备或化学加工；以其为基料的组合物 |
| ----C08G | 用碳—碳不饱和键以外的反应得到的高分子化合物 |
| ------C08G18/00 | 异氰酸酯类或异硫氰酸酯类的聚合产物 |
| --------C08G18/06 | .与具有活性氢的化合物 |
| ----------C08G18/08 | ..工艺过程 |
| ------------C08G18/16 | ...催化剂 |