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. 20, 1977
Filed:
Jan. 09, 1976
Joseph C Lott, Manchester, MO (US);
Grow Chemical Corporation, New York, NY (US);
Abstract
A composition of matter comprising a polyester capable of dissolving in an organic solvent, having a solids content of at least 75% by weight, at a viscosity of X-Z on the Garner scale, prepared by reacting an aromatic polycarboxylic acid, anhydride, or a functionally acid esterifiable derivative thereof, an aliphatic polycarboxylic acid, anhydride or a functionally acid esterifiable derivative thereof, an aliphatic polyol and a monofunctional fatty acid to an acid number less than about 10, and then reacting the product of that reaction with an aromatic or aliphatic polycarboxylic acid, anhydride or a functional acid esterifiable derivative thereof to an acid number greater than 10 and less than about 60, wherein the total reactants have a hydroxyl/carboxyl ratio of greater than 1; the amount of monofunctional fatty acid employed ranges from about 20 to about 50% of the total number of acid equivalents of the reactants and the amount of aromatic polycarboxylic acid reacted in the first step ranges from about 20% to about 50% of the total number of acid equivalents of the reactants. Also described is a coating composition employing the above described polyester in conjunction with a nitrogenous composition, preferably for coating metallic substrates.