BODY MEMBER WITH PHOTOCHROMIC DECORATION

• US 20100080996A1
• Filed: 04/10/2008
• Published: 04/01/2010
• Est. Priority Date: 04/12/2007
• Status: Abandoned Application

• Current Assignee: Nikon Corporation
• Original Assignee: Nikon Corporation
• Inventors: Ono, Ichiro
• Application Number:
  US12/450,740
• Publication Number:
  US 20100080996A1
• Time in Patent Office: Days
• US Class Current: 428/413
• CPC Class Codes: B05D 2201/00 Polymeric substrate or laminate
• CPC Class Codes: B05D 5/061 Special surface effect
• CPC Class Codes: B44F 1/06 produced by transmitted light, e.g. transparencies, imitations of glass paintings
• CPC Class Codes: G02B 5/23 Photochromic filters
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]
• CPC Class Codes: Y10T 428/31511 Of epoxy ether
• CPC Class Codes: Y10T 428/31551 Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
• CPC Class Codes: Y10T 428/31855 Of addition polymer from unsaturated monomers

Abstract

A body member to be exterior parts of a portable device used both outdoors and indoors has a coating film containing a photochromic dye provided on at least a part of an internal surface of a transparent base material. Further, a plastic is used as the transparent base material. Besides, an ultraviolet absorbent that absorbs an ultraviolet ray having a wavelength shorter than a wavelength region in which a color developed by the photochromic dye is expressed is diffused in the transparent base material made of the plastic. In addition, the coating film containing the photochromic dye is formed by a coating liquid that contains a class of hindered amine light stabilizer or a class of hindered phenol light stabilizer.

Claims

1. A photochromic-decorated body member being a body member to be exterior parts of a portable device used both outdoors and indoors, comprising:

a coating film containing a photochromic dye provided on at least a part of an internal surface of a transparent base material.

2. The photochromic-decorated body member according to claim 1, wherein

the transparent base material is made of a plastic.

3. The photochromic-decorated body member according to claim 2, wherein

the transparent base material made of the plastic has an ultraviolet absorbent diffused therein, the ultraviolet absorbent absorbing an ultraviolet ray having a wavelength shorter than a wavelength region in which a color developed by the photochromic dye is expressed.

4. The photochromic-decorated body member according to claim 1, further comprising

a reflective layer being formed to cover the coating film containing the photochromic dye, and scattering and reflecting light transmitted through the transparent base material and the coating film containing the photochromic dye.

5. The photochromic-decorated body member according to claim 4, wherein

the reflective layer is an opaque paint film.

6. The photochromic-decorated body member according to claim 4, further comprising

a layer containing one of granular and flaky scatterers formed between the coating film containing the photochromic dye and the transparent base material.

7. The photochromic-decorated body member according to claim 3, wherein

the coating film is formed by a coating liquid generated either by dissolving the photochromic dye in one of an acrylic resin, a polyurethane resin, and an epoxy resin, or by dissolving the photochromic dye in a resinous substance formed by mixing a combination of two or more of the acrylic resin, the polyurethane resin, and the epoxy resin.

8. The photochromic-decorated body member according to claim 7, wherein

the coating liquid contains one of a class of hindered amine light stabilizer and a class of hindered phenol light stabilizer.