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. 11, 1992
Filed:
Mar. 13, 1991
Applicant:
Inventor:
Donald A Van Beek, Elmhurst, IL (US);
Assignee:
Henkel Corporation, Ambler, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
5283393 ; 528336 ; 528338 ; 528339 ; 528340 ;
Abstract
A polyamide resin adapted for use in thermographic inks prepared from certain dimer acids and monomeric acids and a mixture of a diamine and a polyamine. The alkylene diamines and triamines, such as ethylene diamine and diethylene triamine, are preferred. With oleic acid dimer the monomeric acids are preferably stearic or isostearic acids and mixtures thereof. With the dimer of polyunsaturated acids the monomeric acid may also be the monomer residue from dimerized oleic acid.