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:
Aug. 04, 1992
Filed:
Apr. 10, 1990
Applicant:
Inventors:
Tatsuo Yonemoto, Kadoma, JP;
Masahiro Matsumura, Kadoma, JP;
Yoshihisa Sugawa, Kadoma, JP;
Eiichiro Saito, Kadoma, JP;
Hiroshi Yamamoto, Kadoma, JP;
Keiko Kashihara, Kadoma, JP;
Assignee:
Matsushita Electric Works, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528315 ; 4284735 ; 525422 ; 528170 ; 528171 ; 528172 ; 528179 ; 528182 ; 528313 ; 528317 ; 528318 ; 528321 ; 528322 ;
Abstract
An addition type imide resin prepolymer is obtained by a reaction of unsaturated bisimide of 1.0 mol to diamine of 0.25 to 0.43 mol and an addition of polyamine having three or more benzene rings. The prepolymer is thereby made to contain substantially no unreacted diamine component which affects human body of operators, and to have remarkably excellent heat resistance and adhesive properties, while effective to restrain a production of any component of a molecular weight exceeding 15,000.