Baking finishes of low solvent content

Details Baking finishes of low solvent content Baking finishes of low solvent content

1977-08-01

1978-12-05

Griffin, Ronald W.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 314EP, 260 332EP, 260 334EP, C09D 358, C09D 381

Patent

active

041285212

ABSTRACT:
The invention relates to baking finishes of low solvent content, consisting essentially of an acrylate resin, an epoxy resin and a mixture of organic solvents, with or without pigment, catalyst and other conventional auxiliaries, in which the acrylate resin is a copolymer which contains from 10 to 35% by weight of .alpha.,.beta.-olefinically unsaturated carboxylic acids as copolymerized units, has a very low K value and has an acid number of from 70 to 250 mg of KOH/g, the epoxy resin contains at least 2 oxirane groups per molecule and the mixture of organic solvents is a mixture of from 20 to 80% by weight of a solvent having a boiling point of from 100.degree. to 280.degree. C and a dielectric constant of from 2 to 4.99, and from 80 to 20% by weight of a solvent having a boiling point of from 80.degree. to 200.degree. C and a dielectric constant of from 5 to 27. The weight ratio of acrylate resin to epoxy resin is from 9:1 to 6:4.
These baking finishes of low solvent content may be used, e.g., as finished for domestic equipment and as automotive primers.

REFERENCES:
patent: 3196120 (1965-07-01), McLaughlin et al.
patent: 3301801 (1967-01-01), Gaske et al.
patent: 3405093 (1968-10-01), Walker
patent: 3919150 (1975-11-01), Kiel et al.
patent: 3966667 (1976-06-01), Sullivan et al.
patent: 4051195 (1977-09-01), McWhorter

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