发明名称 |
Process for the preparation of fluid and storage stable organic isocyanates containing carbodiimide and/or uretonimino groups with low colour index |
摘要 |
<p>Preparation of carbodiimide- and/or uretonimine group exhibiting organic isocyanate (A) comprises partial carbodiimidising of isocyanate with a catalyst of phospholine type; and subsequently terminating the carbodiimidising reaction by adding silylated acid compound along with the addition of e.g. non-silylated acid. Preparation of carbodiimide and/or uretonimine group exhibiting organic isocyanate (A) comprises: partial carbodiimidising of isocyanate with a catalyst of phospholine-type; and subsequently terminating the carbodiimidising reaction by adding silylated acid compound of formula X-[Si(CH 3) 3] n, where in addition to the silylated acid, non-silylated acid and/or acidic chloride and/or a sulfonic acid ester is added. X : neutral acid obtained by the removal of azide hydrogen atom of n-basic acid with pKa value of maximum 3 (where the halogen hydrogen acid is excluded); and n : 1-3. An independent claim is also included for (A) obtained by the method.</p> |
申请公布号 |
EP1616858(A1) |
申请公布日期 |
2006.01.18 |
申请号 |
EP20050014272 |
申请日期 |
2005.06.30 |
申请人 |
BAYER MATERIALSCIENCE AG |
发明人 |
WERSHOFEN, STEFAN, DR.;SCHMIDT, MANFRED, DR.;PIRKL, HANS-GEORG, DR.;KAMIYAMA, NOBUHIRO;MURAKAMI, SHINICHI;HARADA, TETSUO |
分类号 |
C07C249/00;C07C267/00;C07C265/12;C08G18/02 |
主分类号 |
C07C249/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|