Process for producing thermosetting finishing powders

Details Process for producing thermosetting finishing powders Process for producing thermosetting finishing powders

1973-12-13

1977-08-16

Levin, Stanford M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 4228, 260 4244, 260 7841, 260 793R, 260835, 260836, 260837R, 427 27, 428220, 428463, 526 16, 526 49, 526 56, 526 78, 526 86, 526271, 526317, 526318, 526320, 526321, 528502, 528503, C08F 220, C08F 600, C08L 3304

Patent

active

040426459

ABSTRACT:
Solid copolymers are produced by copolymerizing a mixture of: (A) at least 30% by weight of a monomer having the formula: ##STR1## 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 a major proportion of a solid copolymer so produced with a minor proportion of a cross-linking compound or with an epoxy resin containing at least 2 epoxy radicals in the molecule in presence of a tertiary amine curing accelerator.

REFERENCES:
patent: 2851448 (1958-09-01), Slocombe et al.
patent: 2857354 (1958-10-01), Fang
patent: 2958611 (1960-11-01), Ulrich
patent: 3082184 (1963-03-01), Falgiatore et al.
patent: 3242123 (1966-03-01), Mayfield et al.
patent: 3446784 (1969-05-01), Kao
patent: 3555111 (1971-01-01), Benham
patent: 3560605 (1971-02-01), Sigoel et al.
patent: 3652476 (1972-03-01), Fellers et al.
patent: 3787340 (1974-01-01), Labana
patent: 3845010 (1974-10-01), Labana et al.
patent: 3845016 (1974-10-01), Labana et al.

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