Compositions and process for metal treatment

Details Compositions and process for metal treatment Compositions and process for metal treatment

1989-02-22

1991-06-25

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

148247, 148254, C23F 11167

Patent

active

050264230

ABSTRACT:
Compositions and process for activating metal surfaces prior to coating with zinc phosphate are disclosed. A Jernstedt salt concentrate is provided which can be employed to prepare Jernstedt salt baths of the type desired by combining the concentrate with additional alkali metal phosphate. Improved activation of metal surfaces are achieved by incorporating a chloride ion producing compound in the activating bath.

REFERENCES:
patent: 2310239 (1943-02-01), Jernstedt
patent: 2456947 (1948-12-01), Jernstedt
patent: 2462196 (1949-02-01), Jernstedt
patent: 2490062 (1949-12-01), Jernstedt
patent: 2864732 (1968-02-01), Miller
patent: 3741747 (1973-01-01), Hamilton
patent: 3864139 (1975-02-01), Heller
patent: 4063969 (1977-12-01), Howell
patent: 4152176 (1979-05-01), Guhde
patent: 4497667 (1985-02-01), Vashi
patent: 4539051 (1985-09-01), Hacias
patent: 4623526 (1986-11-01), Leer

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