JP2010055081A - Colored powder composition for color filter and color filter using same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a colored powder composition for a color filter which is useful as a color material, and a color filter in which a dispersion for a color filter whose medium has the colored powder composition dispersed in it and the colored powder composition are used in a pixel part. <P>SOLUTION: The colored powder composition for a color filter includes: a sulfamoyl compound substituted with a sulfamoyl group having a particular structure in the residue of an organic pigment; and an organic pigment. The color filter includes by using a dispersion for a color filter whose medium has the colored powder composition dispersed in it, and the composition. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a colored powder composition suitable for producing a color filter of a liquid crystal display device and a color filter using the colored powder composition for a color filter in a pixel portion.

A color filter for a liquid crystal display is composed of three colors of red, green, and blue, and in recent years, improvement in contrast is strongly demanded by users. As the color filter colorant, pigments are used because of light resistance and heat resistance, and the blue part is toned using a dioxazine pigment, which is a purple pigment, to the ε-type copper phthalocyanine pigment of the blue pigment. A dispersion in which the above pigment is dispersed is manufactured and converted into an ink to form a color filter. However, with the current ε-type copper phthalocyanine pigment, dioxazine pigment, diketopyrrolopyrrole pigment, anthraquinone pigment, halogenated phthalocyanine pigment, metal complex pigment, etc., the primary particle size of the pigment is too large and the dispersibility of the pigment dispersion Is a major cause of contrast and brightness reduction. There is a need for a new pigment dispersion with high contrast and high brightness, which has a small pigment primary particle size and good pigment dispersibility, in place of the current pigment dispersion.

  Patent Document 1 is obtained as a color filter master batch and a color filter by removing the solvent until the content of the solvent with respect to the master batch is 10% by mass or less while grinding a mixture containing a resin solution and a pigment. There is a description of a master batch for a color filter, and when this master batch is used, a colored dispersion for a color filter can be produced in a short time, and a high-contrast color filter is applied by applying the colored dispersion for a color filter to a substrate. Can be manufactured.

Patent Document 2 discloses organic nanoparticles and dispersion compositions thereof, colored photosensitive resin compositions containing them, inkjet inks, photosensitive resin transfer materials, color filters using them, liquid crystal display devices, and CCD devices. Is made of an organic material, has a number average particle diameter of 50 nm or less, and (volume average particle diameter) / (number average particle diameter) is 1.0 to 2.0. Shown for nanoparticles.

Patent Document 3 describes a pigment dispersion composition, a colored photosensitive resin composition using the same, a photosensitive resin transfer material, an inkjet ink, and a color filter, a liquid crystal display device, and a CCD device using them. A pigment dispersion composition comprising organic pigment nanoparticles and an organic solvent, wherein the proportion of particles having a primary particle size of less than 15 nm in the organic pigment nanoparticles is less than 10% (number%), and 60 nm The pigment dispersion composition is characterized in that the proportion of particles exceeding 10% (number%) is less than 0.01% by mass to 5% by mass.

Patent Document 4 describes an energy-curable gravure ink and an ink-jet ink blended with a grafted pigment, wherein the pigment is a structure P- (U-Y) s (wherein P is a residue of an organic colorant). Y is a polyalkylene oxide moiety, U is a linking moiety that covalently bonds Y to P, and s is an integer from 1 to 3) and an energy curable liquid vehicle, An energy curable gravure ink is shown which is substantially free of a transient solvent and has a viscosity in the range of about 8 cp to about 200 cp.

  Organic pigments used in the production of color filters have completely different characteristics from conventional general-purpose applications. Specifically, the display screen of a liquid crystal display device can be seen more clearly (higher contrast), or the same display screen. There is a demand for making the image brighter (higher brightness). In order to meet these requirements, finely divided organic pigments are used so that the average primary particle size is 100 nm or less. Color resist inks prepared using finely divided organic pigments are fluidized. There remains a problem to be solved regarding the property and light transmittance. For example, when applied to color filter inks for liquid crystal displays, color coating brightness due to lack of light transmittance after pixel formation due to coating unevenness due to reduced Newtonian fluidity of the ink during spin coating on a glass substrate And shortcomings such as lack of contrast remained unresolved.

JP 2008-89654 A JP 2008-7773 A JP 2008-7775 A Special table 2003-531223 gazette

An object of the present invention is to provide a color powder composition for a color filter useful as a color material and a color filter using the color powder composition in a pixel portion.

The present inventors examined various colored powder compositions in order to provide a colored powder composition that can be preferably used for a color filter.
General formula (1)

(In the formula, P is an organic pigment residue, l is an integer of 0 to 3, m is an integer of 1 to 4, and l + m = 1 to 4, Y is represented by the general formula (2). Base

(N represents an integer of 4 to 100, Q represents each independently a hydrogen atom or a methyl group, and Q ′ represents an acyclic hydrocarbon group having 1 to 30 carbon atoms). )
The present inventors have found that a colored powder composition for a color filter containing the sulfamoyl compound (A) represented by formula (A) and an organic pigment (B) can solve the above problems, and has completed the present invention.
That is, the present invention relates to the general formula (1)

(In the formula, P is an organic pigment residue, l is an integer of 0 to 3, m is an integer of 1 to 4, and l + m = 1 to 4, Y is represented by the general formula (2). Base

(N represents an integer of 4 to 100, Q represents each independently a hydrogen atom or a methyl group, and Q ′ represents an acyclic hydrocarbon group having 1 to 30 carbon atoms). )
The coloring powder composition for color filters characterized by containing the sulfamoyl compound (A) represented by these, and the organic pigment (B), and a color filter using the same.

According to the present invention, a colored powder composition for a color filter can be provided, and the liquid crystal display device containing the colored powder composition has a high contrast and a brighter display screen with a high-contrast display screen. A color filter having a pixel portion from which can be obtained can be provided.

In the present invention, the general formula (1)

(In the formula, P is an organic pigment residue, l is an integer of 0 to 3, m is an integer of 1 to 4, and l + m = 1 to 4, Y is represented by the general formula (2). Base

(N represents an integer of 4 to 100, Q represents each independently a hydrogen atom or a methyl group, and Q ′ represents an acyclic hydrocarbon group having 1 to 30 carbon atoms). )
A colored powder composition for a color filter comprising the sulfamoyl compound (A) represented by formula (A) and an organic pigment (B), and a color filter using the colored powder composition in a pixel portion. .

The colored powder composition of the present invention, i.e.
General formula (1)

(In the formula, P is an organic pigment residue, l is an integer of 0 to 3, m is an integer of 1 to 4, and l + m = 1 to 4, Y is represented by the general formula (2). Base

(N represents an integer of 4 to 100, Q represents each independently a hydrogen atom or a methyl group, and Q ′ represents an acyclic hydrocarbon group having 1 to 30 carbon atoms). )
A colored powder composition for a color filter comprising a sulfamoyl compound (A) represented by the formula (A) and an organic pigment (B): an organic pigment residue having at least one sulfamoyl group as a substituent ( P) and an organic pigment (B), and the sulfamoyl group to be introduced can be used without particular limitation as long as it is at least one per organic pigment residue (P). The number is preferably 1 or 2, more preferably 2. The position to be substituted is not particularly limited as long as it can be substituted with the sulfamoyl group. In addition to the sulfamoyl group, a sulfonic acid group may be substituted, and the number of substitutions is preferably 0 to 3.

The organic pigment residue (P) that can be used in the present invention is not particularly limited, but preferred organic pigment residues include phthalocyanine pigment residues, dioxazine pigment residues, azo pigment residues, quinacridone pigment residues, selenium. From the group consisting of pigment residue, perylene pigment residue, perinone pigment residue, phthalone pigment residue, isoindolinone pigment residue, methine / azomethine pigment residue, metal complex pigment residue and diketopyrrolopyrrole pigment residue Any one selected pigment residue can be mentioned.

  Y in the general formula (1) of the present invention is a polyalkylene oxide moiety. Y is any polyalkylene oxide such as ethylene oxide polymers and ethylene oxide / propylene oxide copolymers, which may be block or random. Preferably, Y is a group represented by the general formula (2)

(N represents an integer of 4 to 100, Q represents a hydrogen atom or a methyl group, and Q ′ represents an acyclic hydrocarbon group having 1 to 30 carbon atoms.)
It is desirable to optimize the hydrophilicity and lipophilicity of the alkylene oxide copolymer according to the solvent used in the colored powder composition for color filters. Here, Q ′ may be a linear hydrocarbon group or a branched hydrocarbon group as a non-cyclic hydrocarbon group having 1 to 30 carbon atoms, and the hydrocarbon group may be a saturated hydrocarbon group or an unsaturated hydrocarbon group. Either hydrogen group may be used. Examples of such an acyclic hydrocarbon group include a methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, n-pentyl group, n-hexyl group, n-octyl group, 2 Examples thereof include linear or branched saturated hydrocarbon groups such as -ethyl-hexyl group, n-dodecyl group, stearyl group, n-tetracosyl group and n-triacontyl group.
Further, as the linear or branched unsaturated hydrocarbon group, the hydrocarbon group may have a double bond or a triple bond, for example, vinyl group, propenyl group, isopropenyl group, butenyl group, pentenyl group. , Linear or branched unsaturated hydrocarbon groups such as isoprene group, hexenyl group, heptenyl group, octenyl group, decenyl group, geranyl group, ethynyl group, 2-propynyl group, 2-penten-4-ynyl group be able to.

The number of repeats 1 of the polyalkylene oxide moiety is preferably 4 or more and 100 or less, more preferably 5 or more and 80 or less, and even more preferably 10 or more and 50 or less. If the number of repetitions 1 is less than 4, the affinity with the dispersion medium is insufficient, and if it exceeds 100, the dispersion stability tends to decrease.

The organic pigment famoyl compound (A) represented by the general formula (1) used in the present invention can be obtained by combining known and commonly used methods. As an example of the production method, after sulfonating an organic pigment, a part of the sulfonic acid group is further converted into a sulfonyl chloride, or the organic pigment is directly converted into a sulfochloride, and the sulfonyl chloride and the polyether main chain are converted to each other. It can be produced by reacting a polyether amine having an amine at the terminal (hereinafter abbreviated as “polyether monoamine”). Dioxazine sulfonyl chloride as a raw material can be obtained by reacting dioxazine with chlorosulfonic acid and / or thionyl chloride. The other raw material, polyether monoamine, can be obtained by reductively aminating the hydroxyl group at the end of the polyether skeleton using a nickel / copper / chromium catalyst. Polyether monoamines are also available as commercial products, for example “JEFFAMINE ™ M Series” from Huntsman Corporation.

  The colored powder composition of the present invention is characterized by containing the sulfamoyl compound (A) represented by the general formula (1) and the organic pigment (B), but the organic pigment (B) used is particularly limited. For example, phthalocyanine pigment, dioxazine pigment, azo pigment, quinacridone pigment, selenium pigment, perylene pigment, perinone pigment, phthalone pigment, isoindolinone pigment, methine / azomethine pigment, metal complex pigment or diketopyrrolopyrrole pigment, etc. An organic pigment can be mentioned, and as the blue pigment, for example, a phthalocyanine pigment or an indanthrone blue pigment can be used. As the phthalocyanine, copper phthalocyanine, metal-free phthalocyanine, zinc phthalocyanine, cobalt phthalocyanine, nickel phthalocyanine, iron phthalocyanine and the like can be used, and copper phthalocyanine is preferable from the viewpoint of hue.

Examples of quinacridone pigments include: I. Pigment Violet 19, 42, C.I. I. Pigment Red 122, 202, 206, 207, 209, C.I. I. Pigment Orange 48, 49 and the like.

  Examples of the phthalocyanine pigment include C.I. I. Pigment Blue 15, 15: 1, 15: 2, 15: 3, 15: 4, 15: 6, 16, C.I. I. Pigment Green 7, 36, 58 and the like.

Examples of selenium pigments include C.I. I. Pigment Blue 60, C.I. I. Pigment Yellow 24, 108, C.I. I. Pigment Red 168, 177, C.I. I. Pigment Orange 40 and the like.
Examples of perylene / perinone pigments include C.I. I. Pigment Violet 29, C.I. I. Pigment Red 123, 149, 178, 179, C.I. I. Pigment Black 31, 32, C.I. I. Pigment Orange 43 and the like.

  Examples of the phthalone pigment include C.I. I. And pigments such as Pigment Yellow 138.

  Examples of the dioxazine pigment include C.I. I. Pigment Violet 23, 37, C.I. I. Pigment Blue 80 or the like.

  Examples of isoindolinone pigments include C.I. I. Pigment Yellow 109, 110, 173, C.I. I. Pigment Orange 61 and the like.

  Examples of methine / azomethine pigments include C.I. I. Pigment Yellow 139, 185, C.I. I. Pigment Orange 66, C.I. I. Pigment Brown 38 and the like.

  Examples of the metal complex pigment include C.I. I. Pigment Yellow 150, 129, C.I. I. Pigment Orange 68, C.I. I. And pigments such as Pigment Red 257.

  Examples of the diketopyrrolopyrrole pigment include C.I. I. Pigment Red 254, 255, C.I. I. Pigment Orange 71, 72 and the like.

  Examples of the azo lake pigment include C.I. I. Pigment Red 48: 1, 48: 2, 48: 3, 48: 4, 48: 5, 49: 1, 49: 2, 49: 3, 50: 1, 51: 1 52: 1, 52: 2, 53: 1, 57: 1, 58: 2, 58: 4, 60: 1, 63: 1, 63: 2, 64: 1 200, 211, 238, 239, 240, 243, 245, 247, C.I. I. Pigment Yellow 61, 62: 1, 104, 133, 168, 169, 183, 190, 191, C.I. I. Pigment Orange 17, 17: 1, 19 and 46, and the like.

  Examples of insoluble azo pigments include C.I. I. Pigment Yellow 1, 3, 12, 13, 14, 17, 55, 73, 74, 81, 83, 97, 130, 151, 152, 154, 156, 165, 166, 167, 170, 171, 172, 174, 175, 176, 180, 181, 188, C.I. I. Pigment Orange 16, 36, 60, C.I. I. Pigment Red 5, 22, 22, 31, 112, 146, 150, 171, 175, 176, 183, 185, 208, 213, C.I. I. Pigment Violet 43, 44, C.I. I. Pigment Blue 25, 26 and the like.

  Examples of the condensed azo pigment include C.I. I. Pigment Yellow 93, 94, 95, 128, 166, C.I. I. Pigment Orange 31, C.I. I. Pigment Red 144, 166, 214, 220, 221, 242, 248, 262, C.I. I. Pigment Brown 41, 42 and the like.

In the present invention, two or more of these organic pigments can be used in combination.
The phthalocyanine pigment has a crystal form, and ε-type phthalocyanine is preferable, and ε-type copper phthalocyanine is particularly preferable.
In addition, a purple organic pigment can be used in combination for redening. Examples of the purple organic pigment include C.I. which is a dioxazine pigment. I. Pigment Violet 23, 37, Blue 80 and the like.

In the colored powder composition of the present invention, the ratio (mass%) of the sulfamoyl compound (A) represented by the general formula (1) and the organic pigment (B) is not particularly limited, but (A) / (B) = 5-100 mass% can be mentioned. This is because if the sulfamoyl compound represented by the general formula (1) is less than 5 parts by mass, contrast cannot be expected.
Furthermore, the colored powder composition of the present invention may contain a water-insoluble resin.
Examples of the water-insoluble resin include, but are not limited to, acrylic resins, urethane resins, epoxy resins, polyamide resins, polyester resins, polystyrene resins, and fluorene resins. Among these, an acrylic resin that is a benzyl (meth) acrylate- (meth) acrylic acid copolymer is preferable because a color filter with high dispersibility and high contrast can be obtained. Further, it is more preferable to include the water-insoluble resin because it becomes a fine pigment and the brightness and contrast of the color filter are improved.

Next, the manufacturing method of the colored powder composition of this invention is demonstrated.
The method for producing the colored pigment composition of the present invention comprises:
1) First step of mechanically grinding organic pigment (B) in the presence of water-soluble inorganic salt and water-soluble organic solvent 2) Second step of mixing with sulfamoyl compound (A) 3) With water or aqueous solution It is characterized by having a third step of removing the water-soluble inorganic salt and the water-soluble organic solvent by washing.

Here, as the water-soluble inorganic salt, a generally known water-soluble inorganic salt used in a known and common solvent salt milling method such as sodium chloride, sodium sulfate, or a mixture thereof can be preferably used. The amount of the water-soluble inorganic salt used in the solvent salt milling is preferably 8 to 20 parts by weight, more preferably 10 to 15 parts by weight with respect to 1 part by weight of the organic pigment (B).
In addition, the water-soluble organic solvent is preferably a water-soluble organic solvent that can suppress normally-known crystal growth used in a known and commonly used solvent salt milling method, such as a monohydric alcohol or a polyhydric alcohol, or a mixture thereof. For example, diethylene glycol, glycerin, ethylene glycol, propylene glycol, liquid polyethylene glycol, liquid polypropylene glycol, 2- (methoxymethoxy) ethanol, 2-butoxyethanol, 2- (isopentyloxy) ethanol, 2- (Hexyloxy) ethanol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol, triethylene glycol monomethyl Ether, 1-methoxy-2-propanol, 1-ethoxy-2-propanol, dipropylene glycol, dipropylene glycol monomethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol and the like can be used, and diethylene glycol is preferably used. it can.
Although the usage-amount of the said water-soluble organic solvent is not specifically limited, 0.01-5 weight part is preferable with respect to 1 weight part of organic pigments (B).

  In the step of mechanically grinding the organic pigment (B) in the presence of a water-soluble inorganic salt and a water-soluble organic solvent, the grinder used is not particularly limited, and a known and common grinder can be used. For example, a kneader, a mix muller, a trimix, a miracle KCK, etc. can be used suitably.

  Furthermore, in the step of grinding in 1), grinding can be performed in the presence of the water-insoluble resin.

In the production method of the present invention, only the organic pigment (B) may be subjected to solvent salt milling, but the solvent salt milling using the organic pigment (B) in combination with the pigment derivative is fine for color filters. The organic pigment is preferable in that it can be obtained in a shorter time. The organic pigment produced in the presence of the pigment derivative may be subjected to solvent salt milling as it is, or may be added to the organic pigment produced in the absence of the pigment derivative for solvent salt milling. Of course, solvent salt milling may be performed by further adding a pigment derivative to the organic pigment produced in the presence of the pigment derivative.
As the pigment derivative that can be included in the organic pigment (B) at the time of preparing the organic pigment (B) and / or at the time of solvent salt milling, any known and conventional pigment derivatives can be used. preferable.

(In the formula, P represents an organic pigment residue, A represents a direct bond or a divalent linking group, Y represents a primary to tertiary amino group or heterocyclic residue, and n represents ˜4.)
Specifically, phthalimidomethyl derivatives, sulfonic acid derivatives, N- (dialkylamino) methyl derivatives, and N- (dialkylaminoalkyl) sulfonic acid amide derivatives of organic pigments are preferable. These organic pigment derivatives are also preferably used by adding an amine such as a primary amine, secondary amine, tertiary amine, quaternary amine salt, or ethylenediamine.
The organic pigment derivative that can be included in the organic pigment (B) during solvent salt milling is usually 0.01 to 0.3 part by weight per part by weight of the crude pigment.
30-150 degreeC is preferable and the temperature at the time of solvent salt milling has more preferable 80-100 degreeC. The solvent salt milling time is preferably 5 hours to 20 hours, more preferably 8 to 18 hours.

In this production method, it is important to mechanically grind the organic pigment (B) in the presence of a water-soluble inorganic salt and a water-soluble organic solvent before mixing with the sulfamoyl compound (A). A colored powder composition obtained by simultaneously grinding the organic pigment (B) and the sulfamoyl compound (A) or by previously grinding the sulfamoyl compound (A) and mixing with the organic pigment (B) is used. If a color filter is produced, sufficient contrast cannot be obtained, which is not preferable.

The colored powder composition obtained by the present invention is a colored powder composition for a color filter containing a sulfamoyl compound (A) and an organic pigment (B), and is dispersible and dispersed in a liquid medium. High stability. The pigment particles in the colored dispersion to be described later are dispersed in fine particles, the viscosity of the obtained pigment dispersion is low and stable with high Newtonian fluidity, and when the color filter pixel portion is manufactured with it, By forming a uniform coating film, a color filter having high brightness, contrast, and light transmittance can be obtained. Here, the pigment dispersion refers to a liquid in which a colored powder composition is dispersed in a medium, and examples of the medium include an organic solvent.

Examples of the organic solvent used include aromatic solvents such as toluene, xylene, methoxybenzene, ethyl acetate, propyl acetate, butyl acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, diethylene glycol methyl ether acetate, diethylene glycol. Acetic ester solvents such as ethyl ether acetate, diethylene glycol propyl ether acetate, diethylene glycol butyl ether acetate, propionate solvents such as ethoxyethyl propionate, alcohol solvents such as methanol and ethanol, butyl cellosolve, propylene glycol monomethyl ether, diethylene glycol ethyl ether, Diethylene glycol dimethyl ether, etc. Ether solvents, ketone solvents such as methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, aliphatic hydrocarbon solvents such as hexane, N, N-dimethylformamide, γ-butyrolactam, N-methyl-2-pyrrolidone, aniline, pyridine, etc. And a lactone solvent such as γ-butyrolactone, and a carbamic acid ester such as a 48:52 mixture of methyl carbamate and ethyl carbamate.

Here, the contrast is the transmitted light intensity when the object to be measured is sandwiched with the polarization directions of the two polarizing plates parallel to each other and the object to be measured is sandwiched with the polarization direction of the two polarizers perpendicular to each other. Divided by transmitted light intensity.

  Further, only the colored powder composition of the present invention may be used as the blue composition of the color filter pixel portion, but if necessary, for the improvement of the viscosity characteristics and the dispersion stability of the color filter dispersion and ink. It is also effective to add a pigment derivative. As such a pigment derivative, known and commonly used ones can be used, but a pigment derivative represented by the following general formula (3) is preferred.

(Wherein R is a phthalocyanine pigment residue, dioxazine pigment residue, azo pigment residue, quinacridone pigment residue, selenium pigment residue, perylene pigment residue, perinone pigment residue, phthalone pigment residue, isoindolinone pigment Residue, methine / azomethine pigment residue, metal complex pigment residue and diketopyrrolopyrrole pigment residue, A is a direct bond or divalent linking group, X is a primary to tertiary amino group or heterocyclic residue A group, and n represents 1-4.)
Specifically, phthalocyanine, indanthrone blue, dioxazine violet phthalimidomethyl derivatives, sulfonic acid derivatives, N- (dialkylamino) methyl derivatives, and N- (dialkylaminoalkyl) sulfonic acid amide derivatives are preferred. These pigment derivatives are also preferably used by adding an amine such as a primary amine, secondary amine, tertiary amine, quaternary amine salt, or ethylenediamine.

  The colored powder composition of the present invention can be used for forming a color filter pixel portion by a conventionally known method. In producing a color filter blue pixel portion using this colored powder composition, a pigment dispersion method is suitable.

  A typical method in this method is a photolithography method, in which a photocurable composition to be described later is applied to a surface of a transparent substrate for a color filter on which a black matrix is provided, followed by heat drying (prebaking). After that, pattern exposure is performed by irradiating ultraviolet rays through a photomask to cure the photo-curable compound at a location corresponding to the pixel portion, and then developing the unexposed portion with a developer to remove non-pixels. This is a method of removing the portion and fixing the pixel portion to the transparent substrate. In this method, a pixel portion made of a cured colored film of a photocurable composition is formed on a transparent substrate.

For each of the red, green, and blue colors, a photocurable composition to be described later is prepared, and a color filter having red, green, and blue colored pixel portions at predetermined positions is manufactured by repeating the above-described operation. be able to. A blue pixel portion can be formed from the colored powder composition of the present invention. In addition, in order to prepare the photocurable composition for forming a red pixel part and a green pixel part, a well-known and usual red pigment and green pigment can be used.

  Examples of the pigment for forming the red pixel portion include C.I. I. Pigment Red 177, 209, 254, and the like are pigments for forming the green pixel portion, for example, C.I. I. Pigment Green 7, 10, 36, 47, 58 and the like. A yellow pigment can be used in combination for forming the red pixel portion and the green pixel portion. Thereafter, if necessary, the entire color filter can be heat-treated (post-baked) in order to thermally cure the unreacted photocurable compound.

  Examples of a method for applying a photocurable composition described later on a transparent substrate such as glass include a spin coat method, a roll coat method, and an ink jet method.

  Although the drying conditions of the coating film of the photocurable composition apply | coated to the transparent substrate differ also with the kind of each component, a compounding ratio, etc., they are 50-150 degreeC and are about 1 to 15 minutes normally. Moreover, as light used for photocuring of a photocurable composition, it is preferable to use the ultraviolet-ray of a wavelength range of 200-500 nm, or visible light. Various light sources that emit light in this wavelength range can be used.

Examples of the developing method include a liquid piling method, a dipping method, and a spray method. After exposure and development of the photocurable composition, the transparent substrate on which the necessary color pixel portion is formed is washed with water and dried. The color filter thus obtained is subjected to heat treatment (post-baking) at 100 to 280 ° C. for a predetermined time by a heating device such as a hot plate or an oven to remove volatile components in the colored coating film, and at the same time, light The unreacted photocurable compound remaining in the cured colored film of the curable composition is thermally cured to complete the color filter.

The photocurable composition for forming the pixel portion of the color filter comprises the colored powder composition of the method of the present invention and a photocurable compound as essential components, and if necessary, an organic solvent, a dispersant, and a thermoplastic resin. And can be prepared by mixing these. When the colored resin film that forms the blue pixel portion requires toughness that can withstand baking, etc. performed in the actual production of a color filter, a photocurable compound is used in preparing the photocurable composition. In addition, it is essential to use this thermoplastic resin in combination. When a thermoplastic resin is used in combination, it is preferable to use an organic solvent that dissolves it.

  As the method for producing the photocurable composition, the colored powder composition of the method of the present invention and, if necessary, an organic solvent and a dispersant are used together, and these are mixed and stirred and dispersed so as to be uniform. First, a pigment dispersion for forming a blue pixel portion of a color filter is prepared, and then the photocuring is performed by adding a photocurable compound and, if necessary, a thermoplastic resin or a photopolymerization initiator. In general, a method of forming an ionic composition is used.

  Examples of the dispersant include DisperBYK130, 161, 162, 163, 170, 2000, 2001 manufactured by Big Chemie, EFKA46, EFKA47 manufactured by Efka, and the like. Moreover, a leveling agent, a coupling agent, various surfactants, etc. can be used together.

  The organic solvent is preferably a polar solvent such as propionate, alcohol, ether, ketone, nitrogen compound, or lactone, which is water-soluble, and specific examples thereof include the organic solvents. Moreover, when using a water-soluble organic solvent, water can also be used together.

  Examples of the thermoplastic resin used for the preparation of the photocurable composition include urethane resins, acrylic resins, polyamide resins, polyimide resins, styrene maleic acid resins, styrene maleic anhydride resins, and fluorene resins. Etc.

  Examples of the photocurable compound include 1,6-hexanediol diacrylate, ethylene glycol diacrylate, neopentyl glycol diacrylate, triethylene glycol diacrylate, bis (acryloxyethoxy) bisphenol A, 3-methylpentanediol di Multifunctional with relatively low molecular weight such as bifunctional monomer such as acrylate, trimethylol propaton triacrylate, pentaerythritol triacrylate, tris (2-hydroxyethyl) isocyanate, dipentaerythritol hexaacrylate, dipentaerythritol pentaacrylate Monofunctional, polyester acrylate, polyurethane acrylate, polyether acrylate, etc. It is.

  Examples of the photopolymerization initiator include acetophenone, benzophenone, benzyldimethylketanol, benzoyl peroxide, 2-chlorothioxanthone, 1,3-bis (4′-azidobenzal) -2-propane, 1,3-bis (4 -Azidobenzal) -2-propane-2'-sulfonic acid, 4,4'-diazidostilbene-2,2'-disulfonic acid and the like.

Using each of the materials as described above, 300 to 1000 parts of an organic solvent and optionally 1 to 100 parts of dispersion per 100 parts of the colored powder composition produced by the method of the present invention in terms of mass. The pigment dispersion can be obtained by stirring and dispersing the agent in a uniform manner. The pigment dispersion is then combined with 3 to 20 parts of the total thermoplastic resin and photocurable compound per part of the colored powder composition of the present invention, and optionally 0.05 to 3 per part of the photocurable compound. A photocurable composition for forming a color filter blue pixel portion can be obtained by adding a part of the photopolymerization initiator and, if necessary, further an organic solvent, and stirring and dispersing so as to be uniform.

  As the developer, a known and commonly used organic solvent or alkaline aqueous solution can be used. In particular, when the photocurable composition contains a thermoplastic resin or a photocurable compound, and at least one of them has an acid value and exhibits alkali solubility, the color filter can be washed with an alkaline aqueous solution. This is effective for forming the blue pixel portion.

  Among the pigment dispersion methods, the method for producing the color filter blue pixel portion by the photolithography method has been described in detail, but the color filter blue pixel portion prepared by using the colored powder composition produced by the method of the present invention is Even if a color filter is manufactured by forming a blue pixel portion by other methods such as electrodeposition, transfer, micellar electrolysis, PVED (Photovoltaic Electrodeposition), ink jet, reversal printing, thermosetting, etc. Good.

  The color filter uses a red pigment, a green pigment, and a photocurable composition of each color obtained by using the colored powder composition produced by the method of the present invention, and a liquid crystal material between a pair of parallel transparent electrodes. The transparent electrode is divided into discontinuous fine sections, and each of the fine sections divided into a grid by the black matrix on the transparent electrode is selected from any one of red, green and blue Alternatively, the color filter coloring pixel portions can be alternately provided in a pattern, or the color filter coloring pixel portions can be formed on the substrate and then the transparent electrode can be provided.

  The colored powder composition for a color filter pixel part produced by the method of the present invention is a blue composition having a clearer hue and a reddish hue that is superior in storage stability and heat resistance. In addition, it can be applied to coloring paints, plastics (resin molded products), printing inks, rubber, leather, textile printing, electrostatic charge image developing toners, ink jet recording inks, thermal transfer inks, and the like.

EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited to the range of these Examples from the first. Unless otherwise specified, both “part” and “%” are based on mass.

(Evaluation method)
Various evaluation methods in this example are as follows.
1) Viscosity: Viscosity was measured using a RE550L viscometer manufactured by Toki Sangyo. The lower the viscosity, the better.
2) Luminance: Y value of F10 light source in chromaticity of Olympus microscope MX-50 and Otsuka Electronics spectrophotometer MCPD-3000 microspectrophotometer CIE color development system was measured. Higher brightness was evaluated as better.
3) Contrast value: The color filter blue pixel portion was installed between two polarizing plates, a light source was installed on one side, and a color luminance meter was installed on the opposite side to measure the luminance. It was calculated from the ratio of luminance (transmitted light intensity) between when the polarization axis was parallel and when it was vertical. A higher contrast value was evaluated as better.

(Production Example 1)
As polyether monoamine, 692 parts of "Surfamine B-200" (trade name) (primary amine-terminated poly (ethylene oxide / propylene oxide) (5/95) copolymer, number average molecular weight of about 2,000) manufactured by Huntsman Corporation, USA To a mixture of 66 parts of sodium carbonate and 150 parts of water, 210 parts of copper phthalocyanine sulfonyl chloride (degree of sulfonation = 1) was added and reacted at 5 ° C. to room temperature for 6 hours. The resulting reaction mixture was heated to 90 ° C. under vacuum to remove water and obtain a copper phthalocyanine sulfamoyl compound (A1).

(Production Example 2) Synthesis of dioxazine polyoxyalkylenesulfamoyl compound 17.5 parts of chlorosulfonic acid was charged into a three-necked flask and cooled to 10 ° C or lower while dioxazine violet (CI Pigment Violet 23) 2 0.0 parts were charged. Next, after reacting at 10 ° C. for 3 hours to chlorosulfonate, the reaction solution was poured into a beaker containing 200 parts of ice water. The mixture was filtered and washed with 20 parts of ice water. The obtained paste was transferred to a beaker, 100 parts of water at 10 ° C. or lower was added, and the mixture was stirred and dispersed. As a polyether monoamine in this dispersion, “Surfonamine B-200” (primary amine-terminated poly (ethylene oxide / propylene oxide) (5/95) copolymer, number average molecular weight of about 2,000) 20.3 manufactured by Huntsman Corporation, USA And 0.72 part of sodium carbonate were added, stirred at 5 to 10 ° C. for 1 hour and then at room temperature overnight, and then stirred at 80 ° C. for 30 minutes. The obtained reaction solution was poured into 1000 parts of water and extracted with chloroform. The chloroform layer was washed with water and then dried over anhydrous sodium sulfate. Next, the obtained chloroform solution was filtered off, and the solvent was distilled off under reduced pressure to obtain a dioxazine sulfamoyl compound (V1) (m = 0, n = 2). The residual amine value at this time was 3.4.

(Production Example 3) Synthesis of quinophthalone polyoxyalkylenesulfamoyl compound 30 parts of chlorosulfonic acid was charged into a three-necked flask and stirred at room temperature, and quinophthalone yellow (CI Pigment Yellow 138, PALIOTOL Yellow KO961HD manufactured by BASF). 5.0 parts were added. After reacting at 120 ° C. for 2 hours, the mixture was cooled to 80 ° C. or lower, and 3.1 parts of thionyl chloride was added dropwise. After stirring at 80 ° C. for 30 minutes, the mixture was cooled to room temperature, and the reaction solution was poured into a beaker containing 100 parts of ice water. The mixture was filtered and washed with 20 parts of ice water. The obtained paste was transferred to a beaker, 100 parts of water at 10 ° C. or lower was added, and the mixture was stirred and dispersed. 15.8 parts of "Surfamine B-200" (primary amine-terminated poly (ethylene oxide / propylene oxide) (5/95) copolymer, number average molecular weight 2,000) manufactured by Hunsman Corporation, USA, as a polyether monoamine in the dispersion. And 1.91 parts of sodium carbonate were added, 1 hour at 5 to 10 ° C., 200 parts of water were added, and the mixture was stirred at room temperature for 3 hours. Furthermore, it heated with the oil bath and stirred at 70 degreeC for 1 hour. The formed precipitate was filtered while hot and washed with warm water. The filtrate was dissolved in ethyl acetate, washed with water, and the organic layer was dried over anhydrous sodium sulfate. Subsequently, the obtained ethyl acetate solution was separated by filtration, and the solvent was distilled off under reduced pressure to obtain 16.5 parts (Q1) of a quinophthalone sulfamoyl compound.

Example 1
ε-type copper phthalocyanine pigment (FASTOGEN (registered trademark) Blue AE-8 (ε-type copper phthalocyanine pigment manufactured by DIC Corporation) 85 parts, phthalimide alkylated copper phthalocyanine having 1 to 2 moles of phthalimidomethyl group bonded to the benzene ring 10 parts of an acrylic resin (acid value = 90 mg KOH / g, Mn = 18000), a copolymer of benzyl methacrylate and methacrylic acid, 1000 parts of crushed sodium chloride, and 200 parts of diethylene glycol in a kneader, the temperature of the contents Was maintained at 80-90 ° C. to complete wet milling for 8 hours, to which 63 parts of copper phthalocyanine sulfamoyl compound (A1) was added and mixed with a kneader for 30 minutes. Heat washing at 75 ° C. in aqueous solution, filtration and neutrality of filtrate The wet cake of the ε-type copper phthalocyanine pigment composition was obtained by rinsing with water until the specific conductivity of the raw water was not more than 20 μS / cm, and this wet cake was dried and pulverized with a hot air dryer, A phthalocyanine powder pigment composition was obtained, and the content of the copper phthalocyanine sulfamoyl compound (A1) with respect to the organic pigment in the powder pigment composition was 70% by mass. The average particle size was 0.02 μm as measured by 2010 (manufactured by JEOL Ltd.) The aspect ratio of length and width was 1.5.

Place 3.6 parts of this ε-type copper phthalocyanine powder pigment composition in a plastic bottle, add 12.9 parts of propylene glycol monomethyl ether acetate and 0.3 mmφ sepul beads, and disperse with paint conditioner (manufactured by Toyo Seiki Co., Ltd.) for 3 hours. A pigment dispersion was obtained. The average particle diameter of the pigment dispersion by the small-angle X-ray scattering method was 23.7 nm, and the average normalized dispersion was 57%. The number average particle size of the pigment dispersion using Nikkiso UP-150 was 7.3 nm, and the (volume average particle size) / (number average particle size) was 1.2. Further, the 10% particle size in terms of light intensity was 10 nm, the 50% particle size was 50 nm, and the 90% particle size was 78 nm. The viscosity of the pigment dispersion was 6.5 mPa · s using a RE550L viscometer manufactured by Toki Sangyo under the conditions of 20 ° C. and 10 rpm.

75.00 parts of this dispersion, 5.50 parts of polyester acrylate resin (Aronix (trade name) M7100, manufactured by Toa Gosei Chemical Co., Ltd.), dipentaerythrate hexaacrylate (KAYARAD (trade name) DPHA, Nippon Kayaku) 5.00 parts, benzophenone (KAYACURE (trade name) BP-100, Nippon Kayaku Co., Ltd.) 1.00 parts, and 13.5 parts Euker ester EFP were stirred with a dispersion stirrer, and the pore size was 1.0 μm. Filtration through a filter gave a color resist. This color resist was applied to 50 mm × 50 mm, 1 mm thick glass using a spin coater so that the dry film thickness was 2 μm, and then pre-dried at 90 ° C. for 20 minutes to form a coating film. Subsequently, after performing the exposure by an ultraviolet-ray, it was set as the blue color filter. The contrast of the color filter was 7500, and the luminance Y of C light source y = 0.110 was 13.10.

(Example 2)
Dioxazine violet pigment (HOSTAPERM (registered trademark) Violet RL-NF (Clariant dioxazine violet pigment) 85 parts, acrylic resin (acid value = 90 mgKOH / g, Mn = polymer of benzyl methacrylate and methyl methacrylate) 18000) 15 parts, ground sodium chloride 1000 parts, and diethylene glycol 200 parts in a kneader, and the wet milling was completed for 8 hours while maintaining the temperature of the contents at 80-90 ° C. The dioxazine sulfamoyl compound was then added. (V1) 60 parts were added and mixed with a kneader for 30 minutes, and the resulting contents were heated and washed in a 2% aqueous hydrochloric acid solution at 75 ° C., filtered, the filtrate was neutral, and the specific conductivity of the filtrate The dioxadiene is washed by rinsing until the specific conductivity of the raw water becomes +20 μS / cm or less. The wet cake was dried with a hot air dryer and pulverized to obtain a dioxazine violet powder pigment composition, which was a dioxazine sulphate with respect to the organic pigment in the powder pigment composition. The content of the famoyl compound (V1) is 70% by mass, the powder pigment composition was measured with a transmission electron microscope JEM-2010 (manufactured by JEOL Ltd.), and the average particle size was 0.02 μm. The aspect ratio of the length and width was 1.5.

3.6 parts of this dioxazine violet powder pigment composition is put into a plastic bottle, 12.9 parts of propylene glycol monomethyl ether acetate, 0.3 mmφ sepul beads are added, and dispersed for 3 hours with a paint conditioner (manufactured by Toyo Seiki Co., Ltd.). A pigment dispersion was obtained. The average particle diameter of the pigment dispersion by the small angle X-ray scattering method was 23.1 nm, and the average normalized dispersion was 42%. Moreover, the number average particle diameter of the pigment dispersion using Nikkiso UP-150 was 37.8 nm, and (volume average particle diameter) / (number average particle diameter) was 1.2. Further, the 10% particle size in terms of light intensity was 36 nm, the 50% particle size was 53 nm, and the 90% particle size was 81 nm. The viscosity of the pigment dispersion was 6.0 mPa · s using a RE550L viscometer manufactured by Toki Sangyo under the conditions of 20 ° C. and 10 rpm.

18.00 parts of this dispersion, 5.50 parts of polyester acrylate resin (Aronix (trade name) M7100, manufactured by Toa Gosei Chemical Co., Ltd.), dipentaerythrate hexaacrylate (KAYARAD (trade name) DPHA, Nippon Kayaku) 5.00 parts, benzophenone (KAYACURE (trade name) BP-100, Nippon Kayaku Co., Ltd.) 1.00 parts, and 13.5 parts Euker ester EFP were stirred with a dispersion stirrer, and the pore size was 1.0 μm. Filtration through a filter gave a color resist. This color resist was applied to 50 mm × 50 mm, 1 mm thick glass using a spin coater so that the dry film thickness was 2 μm, and then pre-dried at 90 ° C. for 20 minutes to form a coating film. Subsequently, after performing the exposure by an ultraviolet-ray, it was set as the blue color filter. The contrast of the color filter was 3300, and the luminance Y of C light source y = 0.110 was 12.95.

(Example 3)
An epsilon-type copper phthalocyanine powder pigment composition was obtained by changing 63 parts of the copper phthalocyanine sulfamoyl compound (A1) of Example 1 to 9 parts. The content of the copper phthalocyanine sulfamoyl compound (A1) with respect to the organic pigment in the powder pigment composition is 10% by mass.

Put 2.3 parts of this ε-type copper phthalocyanine powder pigment composition, 1.3 parts of copper phthalocyanine sulfamoyl compound (A1) in a plastic bottle, add 12.9 parts of propylene glycol monomethyl ether acetate, 0.3 mmφ sepul beads, It was dispersed for 3 hours with a paint conditioner (manufactured by Toyo Seiki Co., Ltd.) to obtain a pigment dispersion, and a color filter was produced in the same manner.
Example 4
An acrylic resin (acid value = 90 mgKOH / g, Mn = 18000), which is a copolymer of benzyl methacrylate and methacrylic acid, of Example 1 is used as an epoxy resin (Mn = 5,000) to obtain an ε-type copper phthalocyanine powder pigment composition.

(Example 5)
Dioxazine violet powder pigment composition was obtained by changing 60 parts of dioxazine sulfamoyl compound (V1) of Example 2 to 8.5 parts. The content rate of the dioxazine sulfamoyl compound (V1) with respect to the organic pigment in the powder pigment composition is 10% by mass.

2.3 parts of this dioxazine violet powder pigment composition and 1.3 g of dioxazine sulfamoyl compound (V1) are placed in a plastic bottle, 12.9 parts of propylene glycol monomethyl ether acetate and 0.3 mmφ sepul beads are added to the paint conditioner. (Toyo Seiki Co., Ltd.) was dispersed for 3 hours to obtain a pigment dispersion, and a color filter was produced in the same manner.
(Example 6)
A powder pigment composition was obtained in the same manner as in Example 1 except that 10 parts of the acrylic resin was not used, and a color filter was prepared in the same manner as in Example 1.

(Example 7)
85 parts of quinophthalone yellow (CI Pigment Yellow 138, PALIOTOL Yellow KO961HD manufactured by BASF), 15 parts of an acrylic resin (acid value = 90 mgKOH / g, Mn = 18000) which is a polymer of benzyl methacrylate and methyl methacrylate Then, 1000 parts of crushed sodium chloride and 200 parts of diethylene glycol were kept in a kneader, and the temperature of the contents was kept at 80 to 90 ° C. to complete the wet grinding for 8 hours. Thereto, 60 parts of a quinophthalone compound (Q1) was added and mixed with a kneader for 30 minutes. The obtained contents are heated and washed in a 2% aqueous hydrochloric acid solution at 75 ° C., and washed with water until the filtrate is neutral and the filtrate has a specific conductivity of the raw water of +20 μS / cm or less. As a result, a wet cake of a quinophthalone yellow pigment composition was obtained. The wet cake was dried and pulverized with a hot air dryer to obtain a quinophthalone yellow powder pigment composition. The content of the quinophthalone sulfamoyl compound (Q1) with respect to the organic pigment in the powder pigment composition is 70% by mass. The powder pigment composition was measured with a transmission electron microscope JEM-2010 (manufactured by JEOL Ltd.), and the average particle size was 0.02 μm. The aspect ratio of the length and width was 1.5.

3.6 parts of this quinophthalone yellow powder pigment composition is put in a plastic bottle, 12.9 parts of propylene glycol monomethyl ether acetate and 0.3 mmφ sepul beads are added, and dispersed in a paint conditioner (manufactured by Toyo Seiki Co., Ltd.) for 3 hours. A dispersion was obtained. The viscosity of the pigment dispersion was 8.0 mPa · s using a RE550L viscometer manufactured by Toki Sangyo under the conditions of 20 ° C. and 10 rpm.

75.00 parts of this pigment dispersion and Aronix M7100 (polyester acrylate resin, manufactured by Toa Gosei Chemical Co., Ltd., corresponding to a photocurable compound) 5.50 parts, KAYARAD DPHA (dipentaerylate hexaacrylate, 5.00 parts by Nippon Kayaku Co., Ltd., corresponding to a photocurable compound.) 5.00 parts, KAYACURE BP-100 (benzophenone, Nippon Kayaku Co., Ltd., corresponding to a photopolymerization initiator) 1.00 parts. 13.5 parts of Euker ester EEP was stirred with a dispersion stirrer to obtain a photocurable composition for forming a colored pixel portion for a color filter. This composition was applied to 1 mm thick glass so as to have a dry film thickness of 1 μm. 75.00 parts of this dispersion, 5.50 parts of polyester acrylate resin (Aronix (trade name) M7100, manufactured by Toa Gosei Chemical Co., Ltd.), dipentaerythrate hexaacrylate (KAYARAD (trade name) DPHA, Nippon Kayaku) 5.00 parts, benzophenone (KAYACURE (trade name) BP-100, Nippon Kayaku Co., Ltd.) 1.00 parts, and 13.5 parts Euker ester EFP were stirred with a dispersion stirrer, and the pore size was 1.0 μm. Filtration through a filter gave a color resist. This color resist was applied to 50 mm × 50 mm, 1 mm thick glass using a spin coater so that the dry film thickness was 1 μm, and then pre-dried at 90 ° C. for 20 minutes to form a coating film. Subsequently, after performing the exposure by an ultraviolet-ray, it was set as the blue color filter. The contrast of the color filter was 5000, and the luminance Y of C light source y = 0.513 was 88.70.

(Comparative Example 1)
After completing the 8-hour wet grinding of Example 1, the same operation was performed without adding the copper phthalocyanine sulfamoyl compound (A1) to obtain an ε-type copper phthalocyanine powder pigment composition.

2.1 parts of this ε-type copper phthalocyanine powder pigment composition, 1.5 parts of copper phthalocyanine sulfamoyl compound (A1) are placed in a plastic bottle, 12.9 parts of propylene glycol monomethyl ether acetate, 0.3 mmφ sepul beads are added, It was dispersed for 3 hours with a paint conditioner (manufactured by Toyo Seiki Co., Ltd.) to obtain a pigment dispersion, and a color filter was produced in the same manner.

(Comparative Example 2)
A color filter was prepared in the same manner except that 63 parts of the copper phthalocyanine sulfamoyl compound (A1) of Example 1 was added together with 1000 parts of crushed sodium chloride from the beginning of the grinding.

(Comparative Example 3)
The dioxazine violet powder pigment composition was obtained by performing the same operation without adding the dioxazine sulfamoyl compound (V1) after the wet milling of Example 2 was completed for 8 hours.

Put 2.1 parts of this dioxazine violet powder pigment composition and 1.5 parts of dioxazine sulfamoyl compound (V1) into a plastic bottle, add 12.9 parts of propylene glycol monomethyl ether acetate, 0.3 mmφ sepul beads, and paint It was dispersed for 3 hours with a conditioner (manufactured by Toyo Seiki Co., Ltd.) to obtain a pigment dispersion, and a color filter was produced in the same manner.

(Comparative Example 4)
After completing the 8-hour wet grinding of Example 7, the same operation was performed without adding the quinophthalone sulfamoyl compound (Q1) to obtain a quinophthalone yellow powder pigment composition.

2.1 parts of this quinophthalone yellow powder pigment composition and 1.5 parts of quinophthalone sulfamoyl compound (Q1) are placed in a plastic bottle, 12.9 parts of propylene glycol monomethyl ether acetate and 0.3 mmφ sepul beads are added, and a paint conditioner ( (Manufactured by Toyo Seiki Co., Ltd.) for 3 hours to obtain a pigment dispersion, and a color filter was produced in the same manner.

As is clear from Tables 1 and 2, as in Examples 1 to 4, the powder for color filter added with the polyoxyalkylene sulfamoyl compound of the general formula (1) after the organic pigment refinement step by solvent salt milling By using a colored powder composition, a pigment composition having a small pigment primary particle size and good pigment dispersibility can be obtained. When a color filter is produced using the pigment composition, a color filter having high contrast and high brightness can be obtained.

The powder coloring powder composition for a color filter of the present invention can be used as a pixel portion for a color filter.

Claims (11)

General formula (1)

(In the formula, P is an organic pigment residue, l is an integer of 0 to 3, m is an integer of 1 to 4, 1 + m = 1 to 4, Y is represented by the general formula (2). Base

(N is an integer of 4 to 100, Q is independently a hydrogen atom or a methyl group, and Q ′ represents an acyclic hydrocarbon group having 1 to 30 carbon atoms). )
A colored powder composition for color filters, comprising a sulfamoyl compound (A) represented by formula (A) and an organic pigment (B). The colored powder composition for a color filter according to claim 1, further comprising a water-insoluble resin. The colored powder composition for a color filter according to claim 2, wherein the water-insoluble resin is an acrylic resin, a urethane resin, an epoxy resin, a polyamide resin, a polyester resin, a polystyrene resin, or a fluorene resin. . The organic pigment residue (P) in the general formula (1) is a phthalocyanine pigment residue, a dioxazine pigment residue, an azo pigment residue, a quinacridone pigment residue, a selenium pigment residue, a perylene pigment residue, or a perinone pigment residue. A phthalone pigment residue, an isoindolinone pigment residue, a methine / azomethine pigment residue, a metal complex pigment residue, and a diketopyrrolopyrrole pigment residue. The colored powder composition for a color filter according to any one of claims 1 to 3. The organic pigment (B) is a phthalocyanine pigment, dioxazine pigment, azo pigment, quinacridone pigment, selenium pigment, perylene pigment, perinone pigment, phthalone pigment, isoindolinone pigment, methine / azomethine pigment, metal complex pigment and diketopyrrolopyrrole. The colored powder composition for a color filter according to any one of claims 1 to 4, which is an organic pigment selected from the group consisting of pigments. The ratio (mass%) of the sulfamoyl compound (A) and the organic pigment (B) contained in the colored powder composition for a color filter is (A) / (B) = 5 to 100 mass%. The colored powder composition for a color filter according to any one of 5. A pigment dispersion for a color filter, wherein the colored powder composition for a color filter according to any one of claims 1 to 6 is dispersed in a medium. A color filter using the pigment dispersion for a color filter according to claim 7. In the production of the colored powder composition for a color filter according to claim 1,
1) First step of mechanically grinding the organic pigment (B) in the presence of a water-soluble inorganic salt and a water-soluble organic solvent 2) Second step of mixing with the sulfamoyl compound (A) 3) Water or aqueous solution The manufacturing method of the colored powder composition for color filters which has the 3rd process of removing the said water-soluble inorganic salt and water-soluble organic solvent by wash | cleaning by. In the production of the colored powder composition for a color filter according to claim 2,
1) First step of mechanically grinding the organic pigment (B) and the water-insoluble resin in the presence of a water-soluble inorganic salt and a water-soluble organic solvent 2) Second step of mixing with the sulfamoyl compound (A) 3) The manufacturing method of the colored powder composition for color filters which has the 3rd process of removing the said water-soluble inorganic salt and water-soluble organic solvent by wash | cleaning with water or aqueous solution. The method for producing a colored powder composition for a color filter, wherein the water-soluble inorganic salt is sodium chloride, potassium chloride or sodium sulfate, and the water-soluble organic solvent is a monohydric alcohol or a polyhydric alcohol. Of producing a colored powder composition for a color filter.