Primer composition for a metallic material and a coating method

Details Primer composition for a metallic material and a coating method Primer composition for a metallic material and a coating method

1986-09-12

1988-07-12

Page, Thurman K.

Coating processes

Applying superposed diverse coating or coating a coated base

Synthetic resin coating

523440, 523465, B05D 136

Patent

active

047569352

ABSTRACT:
A primer composition for metallic material comprising (a) a urethane epoxy ester resin having primary hydroxyl groups and a number average molecular weight of 6000 to 12,000, (b) a chromate anticorrosive pigment and (c) a polyethylene wax having a density of 0.94 or more, a molecular weight of 1000 to 10,000 and an acid value of 15 or less (KOH mg/g), the pigment volume concentration being 24 to 45% of the total solids of the composition.
A chemical pretreatment on various metallic materials for improvements in scratch resistance, corrosion resistance and the like can be obviated by the use of said primer composition.

REFERENCES:
patent: 3954693 (1976-05-01), Fong
patent: 3992358 (1976-11-01), Shinabeck
patent: 4042550 (1977-08-01), Tuller et al.
patent: 4433014 (1984-02-01), Gaske et al.
patent: 4542070 (1985-09-01), Ohtani et al.
D. S. Ehn et al, "Co-Cured Coating Process," I.B.M. Technical Disclosure Bulletin, vol. 23, No. 3, Aug. 1980.

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