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:
Oct. 30, 1990
Filed:
Sep. 30, 1987
Applicant:
Inventors:
Charles W McGregor, Fort Wayne, IN (US);
James J Connell, Fort Wayne, IN (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
524245 ; 524539 ; 524590 ; 524602 ; 528289 ;
Abstract
An ultra-high solids content, organic solvent solution of polyester magnet wire enamel is described. The enamel is a tris (2-hydroxy-ethyl) isocyanurate polyester having a ratio of hydroxyl to carboxyl groups of 1.65 to 2.0:1 and a hydroxyl number of 216 to 316. Such enamels are produced with solids contents of greater than 70% by weight and viscosity less than 3,000 cps at 160.degree. C. The method of making such enamel by reacting a glycol, tris (2-hydroxy-ethyl) isocyanurate, and an aromatic diacid or diester, reacting this polymer with modifying phenolic and polyisocyanate and adding an aromatic titanate catalyst is also described.