Colored resin composition exhibiting pleochroism, and molded plastics manufactured using same

Patent metadata

Field	Value
Publication number	US-9868849-B2
Application number	US-201214376229-A
Country	US
Kind code	B2
Filing date	Aug 3, 2012
Priority date	Feb 3, 2012
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

The present invention relates to a coloring resin composition exhibiting pleochroism comprising 100 parts by weight of a transparent thermoplastic resin (A); 0.01 to 0.03 parts by weight of a dye for coloring a resin (B) which is one selected from the group consisting of an azo-based dye (b1), an anthraquinone-based dye (b2), and a methine dye (b3); and 0.1 to 0.3 parts by weight of a functional black dye (C) obtained by mixing an anthraquinone-based dye (c1) and a perinone-based dye (c2). A resin molded article manufactured by the coloring resin composition exhibiting pleochroism of the present invention is characterized by exhibiting different colors of light according to thicknesses although the resin molded article is irradiated with light sources in a single wavelength.

First claim

What is claimed is:

1. A coloring resin composition comprising:
a transparent thermoplastic resin;
a dye for coloring a resin (B) selected from the group consisting of an azo-based dye (b1), an anthraquinone-based dye (b2), and a methine-based dye (b3), wherein the dye for coloring a resin (B) imparts a color other than black; and
a functional black dye (C), wherein the functional black dye (C) is a mixture of an anthraquinone-based dye (c1) and a perinone-based dye (c2).

2. The coloring resin composition of claim 1 , wherein the coloring resin composition comprising:
0.01 to 0.10 parts by weight of the dye for coloring a resin (B); and
0.1 to 1.0 parts by weight of the functional black dye (C) based on 100 parts by weight of the transparent thermoplastic resin.

3. The coloring resin composition of claim 1 , wherein the transparent thermoplastic resin has transmissivity of 85% or more.

4. The coloring resin composition of claim 1 , wherein the azo-based dye (b1) is a compound comprising a chemical structure of the following Chemical Formula 1, the anthraquinone-based dye (b2) is a compound comprising a chemical structure of the following Chemical Formula 2, and the methine-based dye (b3) is a compound comprising a chemical structure of the following Chemical Formula 3:

5. The coloring resin composition of claim 2 , wherein the functional black dye (C) is a mixture of 20 to 70% by weight of the anthraquinone-based dye (c1) and 30 to 80% by weight of the perinone-based dye (c2).

6. The coloring resin composition of claim 5 , wherein the anthraquinone-based dye (c1) is a compound comprising a chemical structure of the following Chemical Formula 4, and the perinone-based dye (c2) is a compound comprising a chemical structure of the following Chemical Formula 5:

7. The coloring resin composition of claim 1 , wherein a molded article formed of the composition exhibits pleochrosim wherein light transmitted through the molded article has different exhibited colors depending on the thickness of the molded article so that the molded article satisfies the following Mathematical Formula 1 or Mathematical Formula 2 when the molded article is irradiated with a light source in a single wavelength:
Abs (Δ X )=| X 1 −X 2 |>0.05  [Mathematical formula 1]

wherein X 1 =χ value of a CIE 1931 color space for the resin molded article with a thickness of 1.0 mm and X 2 =χ value of a CIE 1931 color space for the resin molded article with a thickness of 1.5 mm,
Abs (Δ Y )=| Y 1 −Y 2 |>0.05  [Mathematical Formula 2]

wherein Y 1 =y value of a CIE 1931 color space for the resin molded article with a thickness of 1.0 mm and Y 2 =y value of a CIE 1931 color space for the resin molded article with a thickness of 1.5 mm.

8. The coloring resin composition of claim 1 , wherein the dye for coloring a resin (B) is an azo-based dye (b1) having a chemical structure of Chemical Formula 1:

9. The coloring resin composition of claim 1 , wherein the dye for coloring a resin (B) is an anthraquinone-based dye (b2) having a chemical structure of Chemical Formula 2:

10. The coloring resin composition of claim 1 , wherein the dye for coloring a resin (B) is a methine-based dye (b3) having a chemical structure of Chemical Formula 3:

Assignees

• Chung Hyoung Joo
• Kim Jae Kyung
• Song Eun Ju
• Lee Young Bae
• Lotte Advanced Mat Co Ltd

Inventors

• Chung Hyoung Joo
• Kim Jae Kyung
• Song Eun Ju
• Lee Young Bae

Classifications

• C09B67/0041

  mixtures containing one azo dye · CPC title

• C09B5/14

  Benz-azabenzanthrones (anthrapyridones) · CPC title

• C09B45/22

  containing other metals · CPC title

• C08K5/0041

  Optical brightening agents, organic pigments · CPC title

• C09B67/0061

  by grinding a dyed resin · CPC title