C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
400/7010, 400/70
C09D 5/44 (2006.01) C25D 13/06 (2006.01)
Patent
CA 1327859
Abstract of the Disclosure An aqueous electrophoretic coating material, which can be deposited at the cathode and contains (A) 90 to 50% by weight, based on the total portion of synthetic resin vehicle, of one or several polycondensation, polymerization and/or poly- addition resins, the resin or, in the event that several resins are present, their mixture a) having a number average molecular weight (Mn) of 700 to 10,000 b) having 1.2 x 1023 to 21.7 x 1023 lateral or terminal double bonds per 1,000 g. corresponding to a hydrogenation iodine number of 5 to 90. c) optionally containing primary and/or secondary hydroxyl groups, corresponding to a hydroxyl number of 0 to 450 mg KOH/g of resin, and d) tertiary amino groups corresponding to an amine number of 30 to 450 mg KOH/g of resin. (B) 10 to 50% by weight of one or several cross linking agents, which are compounds with methane tricarboxylic acid amide units of the formula Image which contain, on the average, at least 2 groups with reactive hydrogens per molecule and are derived from a reaction product of a monoisocyanate or polyisocyanate with a malonic acid derivative, and C) 0 to 10% by weight of one or several capped diisocyanates and/or polyisocyanates, as well as its use.
578680
Brinkopke Gerhard
Hendrikx Georg
Plum Helmut
Saatweber Dietrich
Herberts Gesellschaft Mit Beschrankter Haftung
Hoechst Aktiengesellschaft
Kirby Eades Gale Baker
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