The Goodyear & Tire Rubber Company

Nelson C Bletso

William C Tung

Patrick J Pesata, Jr

Paul L Heater

Harlan W Frerking, Jr

A blend of about an equivalent of a carboxyl terminated polyester having a carboxyl end group equivalent weight of 900 to 1200 with 0.8 to 1.2 equivalents of an epoxy curing agent having an equivalent weight of about 70 to 1000, 0 to 50% by weight of a copolyester melt adhesive and sufficient powdered metal to make 20 to 70% but preferably about 30 to 50% metal by weight based on recipe without the copolyester melt adhesive.

Crosslinkable polyester body solder of powdered metal

A copolyester resin having modified termini is disclosed, as well as the method for making and using that compound in subsequent reactions with epoxide curing compounds. The polymerization of the copolyester resin may include a compounding preparation stage for modifying the termini of the copolyester resin by reacting those end groups with an aromatic acid to alter the activation energy necessary to cure the modified copolyester resin with the epoxide compound upon mixing and heating of that mixture in a powder coating upon a substrate. The modified copolyester resin improves impact strength and leveling properties between 300.degree. and 450.degree. F., which is desirable for protection of the underlying substrate.

Growing community of inventors

Kent, OH, United States of America

Nelson C Bletso