Corrosion inhibitive pigment

Details Corrosion inhibitive pigment Corrosion inhibitive pigment

1978-03-06

1979-07-17

McCarthy, Helen

Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

106 1425, 106 1439, 106302, 148 62, 423607, C08K 310, C09C 134, C09D 508

Patent

active

041614097

ABSTRACT:
A chromium chromate complex, obtained by partial reduction of chromic acid in aqueous media with an organic reducing agent, is converted to pigment form by evaporating the resulting aqueous composition to dryness and sub-dividing the obtained solid mass to suitable size. The obtained pigment, with or without intimately associated extenders, incorporated in a conventional vehicle, serves as a corrosion inhibitor in metal coating compositions.

REFERENCES:
patent: 987965 (1911-03-01), Cushman
patent: 2387528 (1945-10-01), Patterson et al.
patent: 2410916 (1946-11-01), Wilson et al.
patent: 2430589 (1947-11-01), Sloan
patent: 2838419 (1958-06-01), Francis
patent: 2902394 (1959-09-01), Jeremias
patent: 3063877 (1962-11-01), Schiffman
patent: 3279958 (1966-10-01), Maurer et al.
patent: 3585260 (1971-06-01), Holker et al.
patent: 3911095 (1975-10-01), Montiglio et al.
Kirk-Othmer, Encyclopedia of Chemical Technology, 2d ed. (19) 5, pp. 505-510.
Udy, Chemistry of Chromium and its Compounds (1956) 1, pp. 357-384.

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