Electrophorectically overcaotable coatings applied by electrocoa

Details Electrophorectically overcaotable coatings applied by electrocoa Electrophorectically overcaotable coatings applied by electrocoa

1989-09-15

1991-01-29

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

2041817, 252511, 523468, 524495, 524496, 106472, B05D 714, C25D 1306

Patent

active

049884204

ABSTRACT:
The invention relates to a cathodically depositable aqueous electropaints which contain cationic amine-modified epoxy resins and are pigmented, with electroconductive carbon black and which, on deposition and crosslinking, provide electrophoroetically overcoatable coatings and contain as electroconductive carbon black a carbon black having an iodine absorption of 870-930 mg/g, a specific surface area (BET/N.sub.2) of 850-1,000 m.sup.2 /g, a pore volume (DBP) of 330-390 ml/100 g and an average particle size of 25-35 nm in an amount of 1.5 to 5.1% by weight--based on total solids.

REFERENCES:
patent: 4208262 (1980-06-01), Kubo
patent: 4375498 (1983-03-01), Le Minez
patent: 4456507 (1984-06-01), Kivel
patent: 4575523 (1986-03-01), Anderson
patent: 4755418 (1988-06-01), DebRoy

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