Process for the production of coatings

Details Process for the production of coatings Process for the production of coatings

C - Chemistry, Metallurgy

08

G

402/195, 400/760

C08G 63/52 (2006.01) C08G 63/676 (2006.01) C08L 67/00 (2006.01) C08L 67/06 (2006.01) C09D 167/06 (2006.01)

Patent

CA 2002253

A coating is obtained on a substrate by applying to the substrate a composition containing as a binder an unsaturated polyester and hardening the coating by infra-red radiation, wherein the binder is a monomer-free olefinically unsaturated polyester resin having a viscosity of 2,000 to 5,000 mPa.s at 23°C and consists essentially of the esterification reaction product of: A) 1.0 mol of an unsatured dicarboxylic acid component selected from the group consisting of malefic acid, malefic anhydride, fumaric acid and mixtures thereof, B) 0.5 to 1.2 mol of a dial component which is a dihydric alcohol with 2 to 8 carbon atoms, C) 0.5 to 1.1 mol of at least one unsaturated ether component which is a monofunctional hydroxy compound containing one or more .beta.,.gamma.-ethylenically unsaturated alkenyl ether moieties in the molecule, and D) 0 to 0.55 mol of an alcohol component which is a saturated monohydric alcohol with 4 to 10 carbon atoms, and the coating composition is useful as an automotive body repair putty.

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