Powder coating compositions

Details Powder coating compositions Powder coating compositions

1976-05-17

1978-05-30

Phynes, Lucille M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 75R, 526 13, 526 14, 526 15, 526 16, C08G 6320

Patent

active

040922987

ABSTRACT:
Novel powder coating compositions consisting of resinous polyhydroxyl compounds as film-forming agents, a cross-linking agent, an activator, and conventional additives are described. In contrast to the known powder coating compositions, the activator rather than cross-linking agent is blocked. The novel cross-linking agents employed are bisazlactones. Activators for use in cross-linking reactions are strong acids which are blocked, i.e they are employed in the form of their thermolabile esters or amine salts. The powder coating compositions of this invention are storable and they can be baked at predetermined temperatures to provide high gloss and elastic coatings.

REFERENCES:
patent: 3935138 (1976-01-01), Wingler et al.
patent: 3948834 (1976-04-01), Brussmann et al.
patent: 3959215 (1976-05-01), Schneider
patent: 3985713 (1976-10-01), Frisch et al.
patent: 3991133 (1976-11-01), Siwiec et al.

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