Process of phosphating before electroimmersion painting

Details Process of phosphating before electroimmersion painting Process of phosphating before electroimmersion painting

1990-12-17

1993-08-17

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

148262, C25D 1320

Patent

active

052365654

ABSTRACT:
Disclosed is a composition and a process of using the composition for phosphating a workpiece made of steel or partly galvanized steel in preparation for electro-immersion painting. The cleaned and rinsed workpiece is first activated with a weakly alkaline aqueous solution which contains titanium phosphate and is subsequently dipped into an acid aqueous phosphating solution at a temperature of from 40.degree. to 60.degree. C. which contains

REFERENCES:
patent: 4486241 (1984-12-01), Donofrio
patent: 4490185 (1984-12-01), Gottwald
patent: 4539051 (1985-09-01), Hacias
patent: 4657600 (1987-04-01), Matsuda
patent: 4670066 (1987-06-01), Schapira et al.
patent: 4681641 (1987-07-01), Zurilla
Kirk-Othmer Chemical Dictionary, vol. 17 (1982).
CRC Handbook, Nebergall, 1977-78, p. B-37.
"College Chemistry", Robinson et al., 1980, p. 64s.

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