C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/152
C08G 59/10 (2006.01) C08G 18/58 (2006.01) C08G 18/64 (2006.01) C08G 18/80 (2006.01)
Patent
CA 1228193
ABSTRACT OF THE DISCLOSURE This invention is directed to a composition which is curable at temperatures above 120°C which comprises (A) an adduct of (1) an epoxy resin having an average of more than one epoxy group per molecule and an average epoxide equivalent weight of from 140 to 1000 and (2) a polyamine compound having at least two amine groups selected from primary amine groups, secondary amine groups or mixtures of such groups per molecule; (B) a material containing an average of more than one NCO group per molecule, which NCO groups have been substantially fully blocked with ketoximes, aldoximes, lactrins, N-hydroxy-imides or alcohols; wherein components (A-1) and (A-2) are employed in quantities which provide from 0.9 to 20 moles of polyamine compound per epoxide equivalent; and components (A) and (B) are employed in quantities which provide a ratio of latent NCO groups in component (B) per primary and/or secondary amine group in Component (A) of from 0.75:1 to 2:1. These compositions can be employed as automotive primer surfaces, coil coatings, and exterior coatings for beverage cans.
477337
Cavitt Michael B.
Hickner Richard A.
Smart & Biggar
The Dow Chemical Company
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