Process for the preparation of water-dilutable resins,...

Details Process for the preparation of water-dilutable resins,... Process for the preparation of water-dilutable resins,...

C - Chemistry, Metallurgy

08

G

402/144, 402/227

C08G 59/42 (2006.01) C09D 163/02 (2006.01)

Patent

CA 1181892

A B S T R A C T - Resinous compounds, for aqueous thermosetting coating dis- persions or solutions ether neutralization, are prepared by reacting a diglycidyl ether of a dihydric phenol with a mono-carboxylic acid and dimerized unsaturated fatty acids, with epoxy equal to or in slight excess over carboxyl, below 150°C in the presence Or an epoxy/carboxyl esterification catalyst to produce a non-acidic intermediate, and reacting the intermediate below 150°C with a polycarboxylic acid anhydride in amounts to provide an acid value from 5-35; aqueous dispersions are prepared by at least 50% neutralization of compounds having acid value 5-15.

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