C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
117/183, 400/654
C09D 5/08 (2006.01) C08L 67/00 (2006.01) C09D 125/08 (2006.01) C09D 167/00 (2006.01) C08L 33/26 (2006.01)
Patent
CA 1139471
ABSTRACT OF THE DISCLOSURE An aqueous primer composition useful for priming substrates such as steel, polyester reinforced with fiberglass, acrylonitrile/butadiene/styrene plastics that are used in automobile and truck bodies and can be dried at ambient temperature comprises a binder of an alkyd resin which is the esterfication product of drying oil fatty acids, an aromatic dicarboxylic acid, an anhydride of an aromatic tricarboxylic acid and a polyhydric alcohol such as an alkyd resin of soya oil fatty acids, phthalic acid, trimellitic anhydride and trimethylol propane; or a reaction product of a styrene/allyl alcohol polymer that has been reacted with a drying oil fatty acid and maleic acid or maleic anhydride; the composition contains pigments in a pigment to binder ratio of about 300/1 to 10/1; typical pigments are talc, barytes, and zinc/calcium molybdate; and the composition contains a sufficient amount of ammonia or an amine such as triethyl amine to provide a pH of about 6.5 - 8.5.
290101
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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