Metal pretreated with an aqueous solution containing a dissolved

Details Metal pretreated with an aqueous solution containing a dissolved Metal pretreated with an aqueous solution containing a dissolved

1994-03-07

1995-07-18

Silverberg, Sam

Coating processes

With pretreatment of the base

Metal base

427337, 4273884, 427387, B05D 312

Patent

active

054339766

ABSTRACT:
Painted metal sheet pretreated with an insoluble, composite layer containing siloxane. The composite layer is formed by rinsing the sheet with an alkaline solution containing at least 0.005M of a dissolved silicate or a dissolved aluminate, at least 0.1 vol.-% of an organofunctional silane and at least 0.02 vol.-% of a crosslinking-agent having two or more trialkoxysilyl groups. After the sheet is dried, the composite layer has a thickness of at least 10 .ANG.. After being painted, the siloxane forms a tenacious covalent bond between the paint and the metal substrate.

REFERENCES:
patent: 4407899 (1983-10-01), Hara et al.
patent: 4411964 (1983-10-01), Hara et al.
patent: 4889775 (1989-12-01), Adaniya et al.
patent: 5108793 (1992-04-01), van Ooij et al.
patent: 5292549 (1994-03-01), Ooij
patent: 5322713 (1994-06-01), Sabata et al.
patent: 5326594 (1994-07-01), Sabata

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