Water soluble, high solids urethane coating compositions

Chemistry of carbon compounds – Miscellaneous organic carbon compounds

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260 292N, 260 292E, 528 71, 528904, C08L 6702, C08L 7506, C08L 7512

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active

041245520

ABSTRACT:
Water soluble, high solids urethane coating compositions comprising a polycaprolactone derivative, an aliphatic polyisocyanate and water. The polycaprolactone derivative is a water soluble, carboxyl modified oligomer addition reaction product mixture obtained by the reaction of polycaprolactone polyol and an anhydride of a polycarboxylic acid to produce a water insoluble adduct that on reaction with an inorganic or organic base produces the water soluble, carboxyl modified oligomer addition reaction product mixtures which are eminently suitable for the production of urethane coating compositions of this invention. The polycaprolactone polyol reacted with the polycarboxylic acid has an average at least two hydroxyl groups in the molecule, a hydroxyl number of from about 15 to about 600 and an average molecular weight of from about 290 to about 6,000. The carboxylic acid anhydride has at least one intramolecular carboxylic anhydride group.

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patent: 3553249 (1971-01-01), Brotherton et al.
patent: 3752778 (1973-08-01), Dhein et al.
patent: 3759873 (1973-09-01), Hudak
patent: 3882189 (1976-05-01), Hudak
patent: 3897381 (1975-07-01), Tugukuni et al.

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