Post treating zinc surfaces

Details Post treating zinc surfaces Post treating zinc surfaces

1977-07-22

1979-12-25

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

422 15, 106 1442, 106 1443, 148 624, 252394, 252395, C09D 508

Patent

active

041804066

ABSTRACT:
An environmentally acceptable composition and process imparts improved corrosion resistance and paint adhesion to a conversion coated surface of zinc or zinc alloy. The coated surface is post-treated with an aqueous composition containing a thiourea compound and a vegetable tannin.

REFERENCES:
patent: 3288684 (1966-11-01), Eaton
patent: 3975214 (1976-08-01), Kulick et al.
patent: 4054466 (1977-10-01), King et al.

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