Powder coating compositions containing glycidyl ester copolymers

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

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260 306R, 260 318E, 260 37EP, 260 784EP, 260830R, 260DIG17, 427 27, 428417, 428418, C08L 6300

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active

040910482

ABSTRACT:
Powder coating compositions are disclosed which, exclusive of pigments and other nonreactive components, comprise a coreactive mixture of: (A) a copolymer of between about 5 and about 20 weight percent of a glycidyl ester of a monoethylenically unsaturated acid and between about 95 to about 80 weight percent of other monoethylenically unsaturated monomers, said copolymer having a glass transition temperature in the range of 40.degree. C to 90.degree. C and a number average molecular weight (M.sub.n) of between about 2500 and about 8500; and (B) an organic carboxylic acid anhydride crosslinking agent, said anhydride being present in the amount of from about 0.4 to about 1.0 anhydride groups for each epoxy group in the copolymer.

REFERENCES:
patent: 2857354 (1958-10-01), Fang
patent: 3058947 (1962-10-01), Fryling
patent: 3070564 (1962-12-01), Roeser
patent: 3222419 (1965-12-01), Jubilee
patent: 3297621 (1967-01-01), Taft
patent: 3514419 (1970-05-01), Darlow
patent: 3541055 (1970-11-01), Malamet
patent: 3595944 (1971-07-01), Manning
patent: 3758632 (1973-09-01), Labana
patent: 3781379 (1973-12-01), Theodore
Detroit Society for Paint Technology; Journal of Paint Technology, vol. 44, No. 565, Feb. 1962, pp. 30-37.

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