Method for film formation

Electrolysis: processes – compositions used therein – and methods – Product produced by electrolysis involving electrolytic...

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204488, 205198, 427379, 4273882, 427409, 428416, 428457, C23C 2800, B05D 714

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active

056768133

ABSTRACT:
The present invention provides a method for film formation, which comprises applying onto a substrate an electrocoating (A) and an intermediate coating (B) in this order, heat-curing the formed films of the coatings (A) and (B), applying thereon a liquid deep color coating (C) which comprises 100 parts by weight of a thermosetting resin composition, 0.1-30 parts by weight of an aluminum powder having an average particle diameter of 10.mu. or less, 1-100 parts by weight of a titanium oxide pigment and 0.1-10 parts by weight of a carbon black pigment and which shows a film hiding power of 25.mu. or less and a film elongation ratio of 10-50% at 20.degree. C., a liquid color clear coating (D) which comprises a thermosetting resin composition and a color pigment as the main components and which shows a film hiding power of 50.mu. or more and a film elongation ratio of 10% or less at 20.degree. C., and a clear coating (E) in this order on a wet-on-wet basis, and heating the formed films of the coatings (C), (D) and (E) to crosslink and cure the three films simultaneously. According to the method, part of the heat-curing steps employed in multilayer film formation can be eliminated and a multilayer film of smaller thickness and improved properties (e.g. improved surface smoothness and chipping resistance) can be obtained.

REFERENCES:
patent: 5075165 (1991-12-01), Kishi et al.
patent: 5385656 (1995-01-01), Duebler et al.
patent: 5432005 (1995-07-01), Tahigami et al.

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