Process for producing thermosetting binders for cathodic...

Details Process for producing thermosetting binders for cathodic... Process for producing thermosetting binders for cathodic...

C - Chemistry, Metallurgy

08

G

400/5120, 400/54

C08G 18/81 (2006.01) C08G 18/80 (2006.01) C09D 5/44 (2006.01)

Patent

CA 1094708

229/1340 ABSTRACT OF THE DISCLOSURE Cathodically depositable, aqueous coating compositions com- prising the reaction product of (A) diene polymers containing free hydroxyl groups with a hydroxyl number of at least 40 mg KOH/g and an average maximum molecular weight of 4000; and (B) a compound having an average of from about 0.8 to 1.5 free isocyanate groups and at least one basic ali- phatically bound nitrogen atom. Optionally, there can be included in the reaction product a compound having from about 0. 8 to 1. 5 free isocyanate groups and from 1 to 3 ethylenically unsaturated double bonds. The coat- ing compositions cure at relatively low temperatures and relatively short curing times to provide films having excellent resistance to water, chemi- cals, and corrosion. - 2 -

292913

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