NON-AQUEOUS DISPERSANT, COLOR MATERIAL DISPERSION LIQUID FOR COLOR FILTER, COLOR FILTER, LIQUID CRYSTAL DISPLAY DEVICE AND ORGANIC LIGHT-EMITTING DISPLAY DEVICE

• US 20160376443A1
• Filed: 10/02/2014
• Published: 12/29/2016
• Est. Priority Date: 12/05/2013
• Status: Active Grant

• Current Assignee: Dai Nippon Printing Company Limited
• Original Assignee: Dai Nippon Printing Company Limited
• Inventors: OGURA, Michihiro, MURATA, Tomoki, MURAKAMI, Fumiyasu, OKADA, Masato, SEGAWA, Hiroaki
• Granted Patent: US 10,570,287 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C08F 265/06 Polymerisation of acrylate or methacrylate esters on to polymers thereof
• CPC Class Codes: C08F 290/02 on to polymers modified by introduction of unsaturated end groups
• CPC Class Codes: C08F 297/02 using a catalyst of the anionic type
• CPC Class Codes: C08F 8/40 Introducing phosphorus atoms or phosphorus-containing groups
• CPC Class Codes: C08K 5/0041 Optical brightening agents, organic pigments
• CPC Class Codes: C08L 53/00 Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
• CPC Class Codes: C09B 11/12 without any OH group bound to an aryl nucleus
• CPC Class Codes: C09B 11/24 Phthaleins containing amino groups ; Phthalanes; Fluoranes; Phthalides; Rhodamine dyes; Phthaleins having heterocyclic aryl rings; Lactone or lactame forms of triarylmethane dyes
• CPC Class Codes: C09B 63/005 Metal lakes of dyes complex metal compounds of azo dyes C09B45/00, metal complexes of colourless compounds C09B57/10
• CPC Class Codes: C09B 67/009 polymeric dispersing agent
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02B 5/223 containing organic substances, e.g. dyes, inks or pigments
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: H10K 71/15 characterised by the solvent used
• CPC Class Codes: H10K 85/141 comprising aliphatic or olefinic chains, e.g. poly N-vinylcarbazol, PVC or PTFE
• CPC Class Codes: H10K 85/151 Copolymers
• CPC Class Codes: H10K 85/626 containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
• CPC Class Codes: H10K 85/633 comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
• CPC Class Codes: H10K 85/6574 comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes

Abstract

Disclosed is a non-aqueous dispersant which is a graft copolymer comprising a constitutional unit represented by the following general formula (II) and at least one kind selected from the group consisting of a constitutional unit represented by the following general formula (I) and a constitutional unit represented by the following general formula (I′), or which is a block copolymer comprising a block portion containing a constitutional unit represented by the following general formula (III) and a block portion containing at least one kind selected from the group consisting of a constitutional unit represented by the following general formula (I) and a constitutional unit represented by the following general formula (I′):

Claims

1. A non-aqueous dispersant which is a graft copolymer comprising a constitutional unit represented by the following general formula (II) and at least one kind selected from the group consisting of a constitutional unit represented by the following general formula (I) and a constitutional unit represented by the following general formula (I′

), or which is a block copolymer comprising a block portion containing a constitutional unit represented by the following general formula (III) and a block portion containing at least one kind selected from the group consisting of a constitutional unit represented by the following general formula (I) and a constitutional unit represented by the following general formula (I′

);

2. A color material dispersion liquid for a color filter, comprising:

a color material (A), a dispersant (B), and a solvent (C),

wherein the color material (A) contains a metal lake color material of a basic dye, and

wherein the dispersant (B) is a graft copolymer comprising a constitutional unit represented by the following general formula (II) and at least one kind selected from the group consisting of a constitutional unit represented by the following general formula (I) and a constitutional unit represented by the following general formula (I′

), or a block copolymer comprising a block portion containing a constitutional unit represented by the following general formula (III) and a block portion containing at least one kind selected from the group consisting of a constitutional unit represented by the following general formula (I) and a constitutional unit represented by the following general formula (I′

);

3. The color material dispersion liquid for a color filter according to claim 2, wherein the metal lake color material of a basic dye is a metal lake color material of a xanthene-based basic dye.

4. The color material dispersion liquid for a color filter according to claim 2, wherein the color material (A) contains a color material (A-1) represented by the following general formula (VI), and an anion in the color material (A-1) is a polyoxometalate anion containing at least tungsten:

8. A color resin composition for a color filter, comprising:

a color material dispersion liquid defined by claim 2, and a binder component (D).

5. A color filter comprising at least a transparent substrate and color layers disposed on the transparent substrate,

wherein at least one of the color layers contains a color material (A), and a dispersant (B),

wherein the color material (A) contains a metal lake color material of a basic dye, and

wherein the dispersant (B) is a graft copolymer comprising a constitutional unit represented by the following general formula (II) and at least one kind selected from the group consisting of a constitutional unit represented by the following general formula (I) and a constitutional unit represented by the following general formula (I′

), or a block copolymer comprising a block portion containing a constitutional unit represented by the following general formula (III) and a block portion containing at least one kind selected from the group consisting of a constitutional unit represented by the following general formula (I) and a constitutional unit represented by the following general formula (I′

);

6. A liquid crystal display device comprising the color filter defined by claim 5, a counter substrate, and a liquid crystal layer disposed between the color filter and the counter substrate.

7. An organic light-emitting display device comprising the color filter defined by claim 5 and an organic light-emitting material.

9. A method for producing a non-aqueous dispersant, the method comprising any one of the following steps (i) or (ii):

(i) reacting an organic phosphonic acid compound with a reactive group of a graft copolymer including a constitutional unit represented by the general formula (II) and a constitutional unit derived from a monomer having the reactive group and an ethylenically unsaturated double bond, the reactive group being selected from the group consisting a glycidyl group, an alicyclic epoxy group, an oxetane group, and a hydroxyl group;

(ii) reacting an organic phosphonic acid compound with a reactive group of a block copolymer including a constitutional unit represented by the general formula (III) and a constitutional unit derived from a monomer having the reactive group and an ethylenically unsaturated double bond, the reactive group being selected from the group consisting a glycidyl group, an alicyclic epoxy group, an oxetane group, and a hydroxyl group;