Linear polyester coil coating compositions

Details Linear polyester coil coating compositions Linear polyester coil coating compositions

1979-07-26

1980-10-21

Phynes, Lucille M.

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

Synthetic resins

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

528302, 528305, C08G 6376

Patent

active

042295556

ABSTRACT:
Linear thermosettable polyester resin compositions are prepared from benzenedicarboxylic acid, an alkyl dicarboxylic acid, (e.g. 1,6-hexanedioic acid), and a short chain alkylene diol component (e.g. 2,2-dimethyl-1,3-propanediol), the resin having a number average molecular weight of about 1,500 to about 5,000 and combined acid and hydroxyl values of about 20 to about 60 mg of KOH per gram of polyester. When these polyesters are combined with an aminoplast and an acid catalyst they form coating compositions which, when applied to a substrate and cured, provide a coating having an outstanding combination of hardness, adhesion, extendability, flexibility and dry heat resistance.

REFERENCES:
patent: 3804920 (1974-04-01), Cunningham et al.
patent: 3819757 (1974-06-01), Dorffel et al.
patent: 3953403 (1976-04-01), Fujiyoshi et al.
patent: 4072662 (1978-02-01), van der Linde et al.
patent: 4075261 (1978-02-01), Fujiyoshi et al.
patent: 4088619 (1978-05-01), Holzrichter
patent: 4101496 (1978-07-01), Dorffel et al.
patent: 4153782 (1979-05-01), Coney
patent: 4176224 (1979-11-01), Bier et al.

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