Removal of acid from cathodic electrocoating baths by electrodia

Details Removal of acid from cathodic electrocoating baths by electrodia Removal of acid from cathodic electrocoating baths by electrodia

1988-12-01

1992-05-19

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

2041808, 204301, 204DIG13, B01D 1302

Patent

active

051145545

ABSTRACT:
Acid is removed from cathodic electrocoating baths in which electroconductive substrates are being coated with cationic resins present in the form of aqueous dispersions, at least a portion of the coating bath being subjected to an ultrafiltration where the ultrafiltration membrane retains the cationic resin to form an ultrafiltrate which contains water, solvent, low molecular weight substances and ions and is at least partly recycled into the coating bath, by subjecting at least a portion of the ultrafiltrate to a specific electrodialysis treatment before returning it into the electrocoating bath.

REFERENCES:
patent: 3165415 (1965-01-01), Kilburn et al.
patent: 3663405 (1972-05-01), Christenson et al.
patent: 3663406 (1972-05-01), LeBras et al.
patent: 3784460 (1974-01-01), Le Bras et al.
patent: 4115225 (1978-09-01), Parsi
patent: 4284492 (1981-08-01), Karn
patent: 4608141 (1986-08-01), Chlanda et al.
Patent Abstracts of Japan, 55-50493, vol. 4, No. 85, (Jun. 18, 1980).

Affiliated with

Also associated with

Rating

Removal of acid from cathodic electrocoating baths by electrodia does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Removal of acid from cathodic electrocoating baths by electrodia, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Removal of acid from cathodic electrocoating baths by electrodia will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2415732