Process to control the curing reaction between a copolyester res

Details Process to control the curing reaction between a copolyester res Process to control the curing reaction between a copolyester res

1984-12-20

1985-11-12

Griffin, Ronald W.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

524904, 525533, 525934, 528112, 528296, 528297, C08L 6300, C08L 6702

Patent

active

RE0320293

ABSTRACT:
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.

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