Title:
カルボジイミド変性された有機イソシアネートを製造するための改善された方法
Document Type and Number:
Japanese Patent JP5048932
Kind Code:
B2
Abstract:
The present invention relates to an improved process for the production of carbodiimide modified organic isocyanate, preferably a polymethylene polyphenylisocyanate, and most preferably diphenylmethane diisocyanate. This process includes (1) neutralizing acidic impurities in an organic isocyanate, (2) partially carbodiimidizing isocyanate groups of the neutralized organic isocyanate, and (3) terminating the carbodiimidization reaction.
Inventors:
James William Rothauther
James Thomas Garrett
Jeffrey S Bolton
James Thomas Garrett
Jeffrey S Bolton
Application Number:
JP2005174052A
Publication Date:
October 17, 2012
Filing Date:
June 14, 2005
Export Citation:
Assignee:
Bayer MaterialScience LLC
International Classes:
C08G18/02; C07C263/20; C07C267/00; C07D229/00; C08G18/08; C08G18/10; C08G18/76; C08G18/79; C07C265/14
Domestic Patent References:
| JP51122023A | ||||
| JP51141850A | ||||
| JP5178812A | ||||
| JP2000109539A | ||||
| JP52100600A | ||||
| JP6065184A | ||||
| JP2001220424A | ||||
| JP48048455A |
Attorney, Agent or Firm:
Toshio Yano
Takuya Kuno
Einzel Felix-Reinhard
Ryoichi Shino
Shuichi Sumiyoshi
Kawabe Sachiyo
Yasushi Miyagi
Kiyoshi Kuruma
Takuya Kuno
Einzel Felix-Reinhard
Ryoichi Shino
Shuichi Sumiyoshi
Kawabe Sachiyo
Yasushi Miyagi
Kiyoshi Kuruma