Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1998-08-31
1999-11-23
Wu, David W.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
106417, C08K 308
Patent
active
059902191
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD OF THE INVENTION
The invention concerns colored metallic paint compositions which can be used ideally in the field of industrial products such as automobiles where novel features are required, and painted objects which have a paint film formed from these compositions.
BACKGROUND OF THE INVENTION
Paint films which have novel features are desirable for providing a beautiful finish on industrial products such as automobiles. For this reason, paint films which give rise to a change in color according to differences in the viewing angle have been obtained in recent years by compounding special glitter materials such as interference mica and iron oxide flakes, and pigment coated aluminum flakes, for example, in paints.
For example, a resin composition with which it is possible to form paint films which have excellent flip-flop characteristics by compounding mica-like aluminum solid solution red iron oxide has been disclosed in Japanese Patent Kokai H4-202477. Furthermore, a color flip-flop metallic paint in which a plurality of types of glittering colored metal pigments which have different colors, or glittering colored metal pigments and organic pigments which have different colors, are compounded and with which paint film s which have excellent color flip-flop characteristics can be formed has been disclosed in Japanese Patent Kokai H7-292294.
However, special glitter materials such as those referred to above are expensive and, moreover, some of the glitter materials have a high specific gravity and so they are liable to settle out and there is a problem in that the operability when painting is poor.
The purpose of this invention is to provide colored metallic paint compositions for resolving these problems in which no special glitter material is compounded, in which the cheap pigments generally used in the past are used, with which changes in color are produced according to differences in the viewing angle, and with which it is therefore possible to form cheaply colored metallic paint films which have excellent features.
A further aim of the invention is to provide painted objects which have a paint film which has excellent features which has been formed with the aforementioned colored metallic paint compositions.
SUMMARY OF THE INVENTION
The invention provides the following colored metallic paint compositions and painted objects. (1) Colored metallic paint, which comprises a paint composition which contains, per 100 parts by weight of film forming binder (A), from 0.1 to 15 parts by weight of metallic powder (B), from 0.1 to 10 parts by weight of a first colored pigment (C) of primary particle size from 0.01 to 0.2 .mu.m selected from among the group comprising the phthalocyanine, perylene, indanthrone, azomethine, benzimidazolone, quinacridone, anthraquinone, diketopyrolopyrrole and dioxazine based colored pigments, and from 0.5 to 50 parts by weight of a second colored pigment (D) of primary particle size from 0.1 to 2 .mu.m selected from among the group comprising the diketopyrolopyrrole, quinacridone, pyrazolone, naphthol AS, iron oxide and complex metal oxide based colored pigments, wherein the primary particle size of the first colored pigment (C) is relatively smaller than that of the primary particle size of the second colored pigment (D), and the first colored pigment (C) and the second colored pigment (D) have a complementary color relationship. (2) Painted object, which comprises a colored metallic paint film formed from a colored metallic paint composition as disclosed in 1 above.
DETAILED DESCRIPTION OF THE INVENTION
The film forming binder (A) which is used in the invention is a material in which the metallic powder (B), the first colored pigment (C) and the second colored pigment (D) are dispersed and which forms the paint film, and no particular limitation is imposed upon the type of binder and it can be a known resin for paint purposes. The thermoset resins where a crosslinking agent such as an amino resin or an isocyanate compound (including blocked materials) for
REFERENCES:
patent: 4598020 (1986-07-01), Panush
patent: 5441564 (1995-08-01), Vogt
patent: 5476949 (1995-12-01), Wallquist et al.
Fujimori Eiji
Ishii Katsuaki
Sakai Naoya
Sakaniwa Shinichi
BASF Coatings AG
Choi Ling-Siu
Wu David W.
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