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Block copolymer containing phosphoric acid group, pigment dispersant and pigment colorant composition

A technology of block copolymer and polymer, which is applied in the field of pigment dispersant and pigment colorant composition, which can solve the problems of unclear pixel edge outline, insolubility, and reduced developability, etc., and achieve coating characteristics and long-term storage stability Excellent stability, excellent long-term storage stability, low viscosity effect

Active Publication Date: 2016-12-21
DAINICHISEIKA COLOR & CHEM MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the basic pigment dispersant with amino groups is insoluble in alkaline developer because it cannot introduce acidic groups into its molecular structure.
Therefore, the basic pigment dispersant becomes the cause of poor developability, such as long developing time, blurred pixel edge, etc.

Method used

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  • Block copolymer containing phosphoric acid group, pigment dispersant and pigment colorant composition
  • Block copolymer containing phosphoric acid group, pigment dispersant and pigment colorant composition
  • Block copolymer containing phosphoric acid group, pigment dispersant and pigment colorant composition

Examples

Experimental program
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Embodiment

[0122] Hereinafter, examples are given and the present invention will be described in more detail. Hereinafter, "parts" and "%" in the text are mass standards unless otherwise specified.

Synthetic example 1

[0123] (Synthesis Example 1: PP-1)

[0124] 230 parts of propylene glycol monomethyl ether acetate (hereinafter referred to as "PGMAc"), 4.1 parts of iodine, 2,2'- 19.7 parts of azobis(4-methoxy-2,4-dimethylvaleronitrile) (hereinafter referred to as "V-70"), 57.6 parts of methyl methacrylate (hereinafter referred to as "MMA") , 57.6 parts of butyl methacrylate (hereinafter referred to as "BMA"), 28.8 parts of 2-ethylhexyl methacrylate (hereinafter referred to as "EHMA"), methoxypolyethylene glycol methacrylate ( n=3~5) ester (hereinafter referred to as "PME200") 28.8 parts, benzyl methacrylate (hereinafter referred to as "BzMA") 14.4 parts, methacrylic acid (hereinafter referred to as "MAA") 20 parts and 0.9 parts of 3,5-di-t-butyl-4-hydroxytoluene (hereinafter referred to as "BHT"). Polymerization was carried out at 40° C. for 7 hours while flowing nitrogen gas to obtain a solution of the A polymer block. The polymerization ratio of the A polymer block calculated from the ...

Synthetic example 2

[0127](Synthesis Example 2: PP-2)

[0128] Using 280 parts of PGMAc, 3.6 parts of iodine, 17.7 parts of V-70, 77.7 parts of MMA, 77.7 parts of BMA, 38.8 parts of EHMA, 38.8 parts of PME200, 19.4 parts of BzMA, 27.0 parts of MAA and 0.9 parts of BHT, in addition, with The above Synthesis Example 1 was operated in the same manner to obtain a solution of the A polymer block. The polymerization rate of the A polymer block calculated from the solid content was 90.1%. In addition, the Mn of the A polymer block was 7,000, the PDI was 1.36, the peak molecular weight was 9,500, and the acid value was 62.2 mgKOH / g.

[0129] Then, except using a mixture of 23.1 parts of MMA, 12.0 parts of P1M, 0.8 parts of V-70, and 35 parts of PGMAc, the same procedure as in the above-mentioned Synthesis Example 1 was performed to form a B polymer block and obtain an A-B block containing Polymer solutions of copolymers. The solid content of the obtained polymer solution was 48.5%, and the polymerizat...

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Abstract

The present invention provides a novel phosphoric acid group-containing block copolymer capable of highly finely dispersing a micronized pigment and producing a pigment colorant composition excellent in coating properties and long-term storage stability. It contains more than 90% by mass of structural units derived from methacrylic monomers, and is an A-B block-type copolymer composed of an A polymer block and a B polymer block. The A polymer block and the B polymer block Among the B polymer blocks, only the B polymer block contains a structural unit derived from a phosphoric acid group-containing methacrylic monomer having a phosphoric acid group.

Description

technical field [0001] The present invention relates to a novel phosphoric acid group-containing block copolymer used as a pigment dispersant, a method for producing the same, and a pigment dispersant and pigment colorant composition using the phosphoric acid group-containing block copolymer. Background technique [0002] So far, with the rapid development of information-based devices, liquid crystal color displays have been mostly used as information display members of the information-based devices. Examples of applications of liquid crystal color displays include displays for televisions, projectors, personal computers, portable information devices, monitors, car navigation systems, mobile phones, computers, and electronic dictionaries; information bulletin boards, instructions, etc. Displays for bulletin boards, function display boards, and signage boards; photographic display screens for digital cameras and video recorders, etc. Liquid crystal color monitors are usually...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F293/00B01F17/52C09D17/00G02B5/20C09K23/52
CPCC08F220/10C08F230/02C08F293/005C08J3/203C09B67/0013C09B67/009
Inventor 村上贺一岛中博之
Owner DAINICHISEIKA COLOR & CHEM MFG CO LTD
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