The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 19, 1996
Filed:
Sep. 13, 1994
Applicant:
Inventors:
Kazuhiko Takeuchi, Tsukuba, JP;
Yoshihiro Kubota, Tsukuba, JP;
Takaaki Hanaoka, Tsukuba, JP;
Takehiko Matsuzaki, Tsukuba, JP;
Yoshihiro Sugi, Tsukuba, JP;
Tatsuya Eto, Ibaraki-ken, JP;
Tokio Hagiwara, Tokyo, JP;
Tadashi Narita, Yokohama, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528343 ; 528335 ; 528347 ;
Abstract
There is disclosed a method for producing aromatic polyamides represented by the following formula (III), which comprises reacting an aromatic dihalogen compound represented by the following formula (I) with a diamine compound represented by the following formula (II) in the presence of cobalt/phosphine complex and a basic substance under carbon monoxide atmosphere: