Vaporous amine catalyst spray method

Details Vaporous amine catalyst spray method Vaporous amine catalyst spray method

B - Operations, Transporting

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B05D 7/16 (2006.01) C08G 18/08 (2006.01) C08G 18/18 (2006.01) C08G 18/42 (2006.01) C09D 175/04 (2006.01)

Patent

CA 1204347

-21- VAPOROUS AMINE CATALYST SPRAY METHOD ABSTACT OF THE DISCLOSURE Disclosed is a novel method for applying a film of a coating compostion in liquid form onto a substrate which applied film cures rapidly at room temperature without heat curing. The coating composition comprises an aromatic hydroxyl- functional compound and a multi-isocyanate cross-linking agent, optionally dispersed in a fugitive organic solvent therefor. The method comprises the steps of: (a) forming an atomizing gas flow which comprises in intimate mixture of a carrier gas bearing a catalytic amount of a vaporous tertiary amine; (b) atomizing said liquid coating composition with said vaporous catalytic amine-bearing atomizing carrier gas flow; and (c) directing said atomizate of step (b) onto said substrate to form said applied film.

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