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:
May. 28, 1991
Filed:
Apr. 02, 1990
Applicant:
Inventors:
Arnold Hofer, Muttenz, CH;
Alex Wegmann, Allschwil, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 94 ; 528 99 ; 528102 ; 528104 ; 528110 ;
Abstract
Advanced epoxy resins are disclosed which can be obtained by reacting liquid or semi-solid aromatic opoxy resins with aliphatic diols, and subsequently reacting the reaction product with mono- or binuclear bisphenols in the presence of a cyclic quaternary ammonium salt.