Powder coating of epoxy resin, acrylic copolymer and tertiary am

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal

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260 296TA, 260 296MN, 260 285R, 260 285D, 260 4228, 260 4244, 260873, 526 16, 526 49, 526271, 526317, 526318, 526320, 528502, 528503, C08L 6300

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039548988

ABSTRACT:
Solid copolymers are produced by copolymerizing a mixture of: (A) at least 30% by weight of a monomer having the formula: ##EQU1## wherein R.sub.1 is H or CH.sub.3 and R.sub.2 is an alkyl radical containing from 1 to 14 carbon atoms; (B) from 3 to 20% by weight of an ethylenic .alpha., .beta. unsaturated carboxylic acid or anhydride thereof, or from 3 to 40% by weight of glycidyl acrylate or glycidyl methacrylate; and (C) from 0 to 67% by weight of a monomer copolymerizable with said monomers (A) and (B). Preferably, the mixture is first bulk-polymerized until conversion to the copolymer is from 10% to 80% by weight and the polymerization is completed by suspension-polymerization. Thermosetting solid coating compositions are produced by mixing and melting 60 to 95 parts by weight of the solid copolymer and 40 to 5 parts by weight of a cross-linking compound or of an epoxy resin containing at least 2 epoxy radicals in the molecule in presence of a tertiary amine curing accelerator.

REFERENCES:
patent: 3011909 (1961-12-01), Hart et al.
patent: 3301743 (1967-01-01), Fekete et al.
"Epoxy Resin Technology", Ed. by Paul F. Bruins, pp. 48-49, and 74-75, Interscience Publisher, N.Y., 1968.

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