US 9,309,399 B2 · Pigment dispersion liquid, a method for producing the pigment dispersion liquid, a photosensitive color resin composition comprising the pigment dispersion liquid, an ink-jet ink comprising the pigment dispersion liquid, a toner for electrophotographic printing comprising the pigment dispersion liquid, and color filter

Abstract

The present invention is to provide a pigment dispersion liquid which has excellent pigment dispersion stability and high productivity even in the case of using a fine pigment and having high pigment concentration; a method for producing the pigment dispersion liquid; a color resin composition which has excellent pigment dispersion stability, causes no clogging problem, has excellent adhesion, and is able to form color layers with high pigment concentration, with accuracy; and a color filter comprising the resin composition. Disclosed is a method for producing a pigment dispersion liquid, comprising the step of dispersing a pigment by mixing at least a pigment (A), a polymer (B) having tertiary or lower amines, an amine-reactive low molecular compound (C), and a dispersion medium (D), and dispersing the pigment (A) while reacting the polymer (B) with the low molecular compound (C), and a pigment dispersion liquid produced by the production method.

Claims4

Dependent claims

A method for producing a pigment dispersion liquid, wherein the method comprises the step of dispersing a pigment by mixing at least a pigment (A), a polymer (B) having tertiary or lower amines, an amine-reactive low molecular compound (C), and a dispersion medium (D), and dispersing the pigment (A) while reacting the polymer (B) with the low molecular compound (C);

wherein a ratio of a total number of amine-reactive functional groups in the low molecular compound (C) to a total number of amines in the polymer (B) is 20 to 70%;
and
wherein the low molecular compound (C) is one or more kinds selected from the group consisting of:
monobutyl phosphate, dibutyl phosphate, methyl phosphate, dibenzyl phosphate, diphenyl phosphate, phenylphosphinic acid, phenylphosphonic acid and dimethacryloyloxyethyl acid phosphate.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

13/878,324Filed 19 Oct 2010

Priority

JP 2009-08477931 Mar 2009

Published

US 2013/0216945 A122 Aug 2013

Granted

12 Apr 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

C08L 33/14
Homopolymers or copolymers of esters: of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
C08K 5/53
Phosphorus bound to oxygen: bound to oxygen and to carbon only
C08K 5/5313
Bound to oxygen and to carbon only: phosphinic compounds, e.g. R2=POR'
C08K 5/5333
Phosphonic compounds, e.g. R—P2: esters of phosphonic acids

Life of this patent

Life of this patent

Abstract

Claims4