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:
Feb. 27, 1996
Filed:
Jul. 20, 1994
Shoji Tamai, Kanagawa, JP;
Yuichi Okawa, Kanagawa, JP;
Wataru Yamashita, Kanagawa, JP;
Yoshihiro Sakata, Kanagawa, JP;
Hideaki Oikawa, Kanagawa, JP;
Keizaburo Yamaguchi, Chiba, JP;
Tadashi Asanuma, Osaka, JP;
Akihiro Yamaguchi, Kanagawa, JP;
Mitsunori Matsuo, Kanagawa, JP;
Mitsui Toatsu Chemicals Inc., Tokyo, JP;
Abstract
A polyimide resin composition substantially comprising 1 99.9.about.50 parts by weight of polyimide having recurring structural units of the formula ##STR1## and 2 0.1.about.50 parts by weight of a polyimide which improved melt flowability and is prepared by using 1,3-bis(3-aminophenoxy)benzene or 6,6'-bis(3-aminophenoxy)-3,3,3',3'-tetramethyl-1,1'-spirobiindane as essential diamine component, or polyether pyridine having recurring structural units of the formula: ##STR2## is disclosed. Further, a polyimide based resin composition comprising the polyimide resin composition or a polyimide copolymer obtained by using the above diamines and a fibrous reinforcement is disclosed. These compositions have remarkably good processability, excellent heat stability and repeated fatigue characteristics.