Method for forming tranparent multilayers
AssigneesNissan Motor Co., Ltd., Nippon Paint Co., Ltd.
InventorsMasahiko Yamanaka, Motoyoshi Hanaoka, Hiroaki Konse, Haruhisa Shigeno, Masakatsu Kinoshita
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Abstract
A method for forming a transparent multilayer is described, using a wet-on-wet process in which first a transparent acrylic copolymer paint A and then a transparent fluorine-containing polymer paint B comprising the formula ##STR1## wherein X represents a fluorine atom or chlorine atom, and R.sub.1, R.sub.2, R.sub.3, R.sub.4 each represents represents a hydrogen atom, hydroxyalkyl group, or carboxyalkyl group, are applied on a conventional finish coating. The method produces a protective multilayer consisting of a paint A layer to improve adhesion and a paint B layer to improve weatherability on the conventional finish coatings.
Claims8
A method for forming a transparent multilayer wherein first a transparent paint A comprising a film forming amount of an acrylic copolymer, wherein monomers incorporated to form the acrylic copolymer have an average molecular weight of from 5,000 to 30,000, a hydroxyl value per gram of solid content of from 30 to 100, and an acid value of from 5 to 20, and then a film forming amount of a transparent paint B, which is dissolved in organic solvent, of fluorine containing polymer comprising the formula ##STR5## wherein X represents a fluorine or chlorine atom, and R.sub.1, R.sub.2, R.sub.3, and R.sub.4 each represents a hydrogen atom, hydroxyalkyl group, or carboxyalkyl group,
- are applied on a conventional finish coating with a wet-on-wet process.
Dependencies are inferred from the claim text.