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:
Sep. 14, 1993
Filed:
Oct. 04, 1990
Applicant:
Inventors:
Akira Yasuda, Saitama, JP;
Rihei Nagase, Tokyo, JP;
Assignee:
Somar Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09J / ; C08L / ; C08G / ;
U.S. Cl.
CPC ...
523211 ; 523443 ; 523466 ; 525486 ; 528117 ;
Abstract
A hardening agent composition for epoxy resins and a method for forming the composition is disclosed, which comprises a low-reactive hardening agent, an imidazole compound and a zeolite, wherein the imidazole compound is substituted on the imidazole nucleus by at least one of (a) and (b): (a) an alkyl group having 2 or more carbon atoms and a polar group and (b) an alkenyl group. The hardening agent composition combined with an epoxy resin to form a thermosetting epoxy resin composition, capable of hardening under heat to give a hardened product, has a remarkably elevated adhesion strength.