Chromate-free conversion coatings for metals

Details Chromate-free conversion coatings for metals Chromate-free conversion coatings for metals

1996-10-09

1998-06-02

Dudash, Diana

Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

106 1412, 106 1415, 148247, C23C 2205, C23C 2248

Patent

active

057592446

ABSTRACT:
An aqueous acidic composition for providing improved corrosion resistance and improved paint adhesive to metals; e.g., ferrous, aluminum, or magnesium alloys; upon contact. The composition comprises a Group IV-A metal such as zirconium in an acidic solution with one or more oxyanions to stabilize and solubilize the metal while fluorides and organic solvents are specifically excluded from the composition. The coating is at a pH below about 5.0 and is preferably in a range between about 1.0 and about 4.0. The coating may contain surfactants, sequestering agents, or organic additives for improved corrosion protection and paint adhesion. The substrate may be treated by immersion, spray, fogging or rollcoat.

REFERENCES:
patent: 3609110 (1971-09-01), Kumanotani
patent: 3964914 (1976-06-01), Bullock et al.
patent: 4338140 (1982-07-01), Reghi
patent: 4339310 (1982-07-01), Oda et al.
patent: 4341558 (1982-07-01), Yashiro et al.
patent: 4462842 (1984-07-01), Uchiyama et al.
patent: 4470853 (1984-09-01), Das et al.
patent: 4762619 (1988-08-01), Gaddis et al.
patent: 4851293 (1989-07-01), Egerton et al.
patent: 4863706 (1989-09-01), Wada et al.
patent: 5114890 (1992-05-01), Peterson
patent: 5211663 (1993-05-01), Kovacs et al.
patent: 5362573 (1994-11-01), Pandian et al.
patent: 5380374 (1995-01-01), Tomlinson
patent: 5397390 (1995-03-01), Gorecki
patent: 5441580 (1995-08-01), Tomlinson
patent: 5449415 (1995-09-01), Dolan
patent: 5516511 (1996-05-01), Motley et al.
patent: 5531820 (1996-07-01), Gorecki
188th Meething Program for The Electrochemical Society, Inc. including Abstracts of speakers/programs to be conducted. Oct. 8-13, 1995.

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