B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
117/102
B05D 3/04 (2006.01) C08G 18/54 (2006.01) C08G 63/00 (2006.01)
Patent
CA 1185842
A B S T R A C T A substrate is coated with a film of a coating composition rapidly curable at room temperature in the presence of a vaporous tertiary-amine catalyst and possessing a pot life of at least 4 hours in an open pot. The coating composition comprises: (1) a phenol-functional condensation product of (a) a phenol-aldehyde reaction product bearing a plurality of methylol and phenol groups, and (b) a polyol, polycarboxylic acid, polyepoxide, the condensation product then being reacted with a selected transmethylolating agent for substantially transforming residual methylol groups into non-active hydrogen groups, the condensation product also being rid of substantially all water content; (2) a multi-isocyanate cross-linking agent, where the molar ratio of phenol groups of the condensation product to the isocyanate groups of the cross- linking agent ranges between about 1:1 and 2:1; and (3) an organic solvent for the condensation product and for the cross-linking agents. The substrate is coated with a film of the coating composition and then exposed to a vaporour tertiary-amine catalyst to rapidly cure the film at about room temperature.
409674
Ashland Oil Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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