Method of treating metal surfaces

Details Method of treating metal surfaces Method of treating metal surfaces

1974-10-03

1976-06-08

Esposito, Michael F.

Metal treatment

Compositions

Heat treating

148 615Z, 148 315, 428460, 134 2, C23F 1100, C23F 708

Patent

active

039619923

ABSTRACT:
Metal surfaces are treated, preferably after phosphating, with a phenol-formaldehyde composition or the like prepared under alkaline conditions, the mole ratio of formaldehyde to phenol being at least about 2:1. The phenol-formaldehyde composition is most often used as an aqueous solution. The treatment is a suitable substitute for the conventional chromate rinse.

REFERENCES:
patent: 2705704 (1955-04-01), Sorenson
patent: 2834745 (1958-05-01), Weber et al.
patent: 3288745 (1966-11-01), Hempel et al.
patent: 3519495 (1970-07-01), Plaxton
patent: 3697331 (1972-10-01), Shatz et al.
patent: 3707401 (1972-12-01), Jarema et al.
patent: 3749611 (1973-07-01), Leon et al.
patent: 3776782 (1973-12-01), Kiefer et al.
patent: 3868276 (1975-02-01), Shatz et al.

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