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. 12, 1991
Filed:
Apr. 02, 1990
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528220 ; 528226 ; 528228 ; 528229 ; 528230 ; 528244 ; 528246 ; 528247 ; 528248 ; 528266 ; 528353 ;
Abstract
Thermosetting Schiff base resins, their preparation and their applications re described. These thermosetting Schiff base resins can be defined as responding to the general formula: ##STR1## Radicals Ar.sub.1, Ar.sub.2 and Ar.sub.3 are chosen so that the softening temperature of the resins is less than about 150.degree. C. The resins can be prepared by direct condensation of an ethynyl benzaldehyde or acetophenone on a telechelic diamine oligomer obtained by reaction of a diamine containing flexibilizing groups on a derivative of benzhydrol tetracarboxylic acid. These Schiff base resins can be used by bulk thermal polymerization particularly to prepare adhesives or composite matrices.