C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
117/102, 400/741
C08J 7/04 (2006.01) B05D 3/04 (2006.01) B32B 27/08 (2006.01) C08G 18/18 (2006.01) C08G 18/42 (2006.01)
Patent
CA 1198543
A B S T R A C T A coating composition rapidly curable at room temperature in the presence of vaporous tertiary amine catalyst and possessing a pot life of at least about 4 hours in an open pot. The coating composition includes an aromatic hydroxyl-functional condensation product made by condensing the following ingredients: (a) a linear aliphatic dibasic acid; (b) a linear aliphatic glycol, where the sum of the methylene groups of (a) and (b) is between 10 and 12 and where up to about one-half of (a) or (b) can be replaced with a C6-C8 cycloaliphatic dibasic acid or diol; (c) the combination of a linear aliphatic glycol and aromatic dicarboxylic acid, or an aromatic diol and a linear aliphatic dicarboxylic acid, and (d) a phenol capping agent, where the polyol has a molecular weight of between about 1,000 and 3,500 an equivalent solids weight of between about 250 and 875, and substantially no aliphatic hydroxyl groups. The coating composition also includes a multi-isocyanate curing agent and a volatile organic solvent for the aromatic hydroxyl-functional condensation product and for the multi-isocyanate curing agent, the ratio of aromatic hydroxyl equivalents of the condensation product to the isocyanate equivalents of the multi-isocyanate being between about 1:1 and 1:2.
411089
Ashland Oil Inc.
Gowling Lafleur Henderson Llp
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