Title:
カルボジイミド基及び/又はウレトンイミン基を有する色数が低い液状の貯蔵安定性有機イソシアネートの製造方法
Document Type and Number:
Japanese Patent JP5113996
Kind Code:
B2
Abstract:
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.
Inventors:
Stephan Weershofen
Manfred Schmidt
Hans-Georg Pilkur
Nobuhiro Ueyama
Shinichi Murakami
Tetsuo Harada
Manfred Schmidt
Hans-Georg Pilkur
Nobuhiro Ueyama
Shinichi Murakami
Tetsuo Harada
Application Number:
JP2005203624A
Publication Date:
January 09, 2013
Filing Date:
July 12, 2005
Export Citation:
Assignee:
Bayer MaterialScience AG
International Classes:
C07C249/00; C08G18/10; C07C265/12; C07C267/00; C08G18/79
Domestic Patent References:
| JP6199987A | ||||
| JP5178812A | ||||
| JP11035652A | ||||
| JP7330849A | ||||
| JP10036470A | ||||
| JP2002047333A | ||||
| JP2005053870A |
Attorney, Agent or Firm:
Toshio Yano
Takuya Kuno
Einzel Felix-Reinhard
Takuya Kuno
Einzel Felix-Reinhard