Abstract: A pixel-forming colorant composition contains at least one green colorant selected from the group consisting of the following pigments (A) and (B) and pigment derivative (C): (A) a copper phthalocyanine green pigment obtained by reacting at least one of a phthalic acid substituted on average with from 3.5 to 4.

Abstract: A pigment dispersant contains the following component (a) alone or the following components (a) and (b) in combination: Component (a): a composite pigment formed of a diketopyrrolopyrrole pigment having a sulfonic group and another diketopyrrolopyrrole pigment having no sulfonic group, wherein the number of sulfonic group per molecule of the diketopyrrolopyrrole pigments in the composite pigment is from 0.05 to 0.5; and Component (b): a pigment other than the component (a), wherein the pigment has a sulfonic group or its metal salt, ammonium salt or amine salt. Also disclosed are a colored composition for color filters, a process for the fabrication of a color filter, the color filter fabricated by the process, an image display device including the color filter, and an information communication equipment including the image display device.

Abstract: A high-molecular gelling agent precursor for an electrolyte comprises a copolymer formed of (A) a hydrophobic monomer having a hydrophobic group, which forms a carboxyl group upon saponification, and (B) a hydrophobic polyfunctional monomer. The saponification product of the copolymer has property to gel the electrolyte. A high-molecular gelling agent for the electrolyte is produced by saponifying the precursor with a saponifying agent selected from the group consisting of acids and alkalis while using a reaction medium selected from the group consisting of water and hydrophobic organic solvents.

Abstract: A desalting method for raw water with at least a water-soluble salt contained therein comprises the following first and second steps: (1) removing water from said raw water to concentrate said raw water; and (2) removing at least a part of said water-soluble salt from the resulting concentrated rawwater. This method can conduct the desalting of raw water, which contains at least a water-soluble salt, industrially and economically.

Abstract: Image-recording, hydrophilic colorants represented by the below-described formula (1) are disclosed. These colorants can be provided as colorants capable of forming images excellent in print quality such as chroma, gloss, density, light fastness and abrasion fastness, and also as hydrophilic colorants capable of affording inks excellent in physical properties such as long-term storability and press stability. [organic pigment]?[linking group]?[hydrophilic compound]??(1) wherein the [organic pigment] is a hydrophobic pigment having no hydrophilic group by itself, the [linking group] is a group linking the [organic pigment] and the [hydrophilic compound] with each other and blocking an effect of the [hydrophilic compound] on the [organic pigment], and the [hydrophilic compound] is an anionic, cationic and/or nonionic, hydrophilic compound.

Abstract: Polymer-bonded functional agents are each obtained by reacting a functional agent containing reactive groups with a polymer containing groups reactive with the reactive groups of the functional agent. The functional agent comprises at least one functional agent selected from the group consisting of antioxidants, ultraviolet absorbers, light stabilizers, infrared absorbers and antistatic agents. Use of these polymer-bonded functional agents can provide articles with improved functions.

Abstract: Color filters can each be fabricated by printing a pixel pattern for the color filter on a flexible plastic film by a central impression cylinder press. The pixel pattern is formed of pixels of three primary colors consisting of red, green and blue or pixels of three primary colors consisting of yellow, magenta and cyan. Also disclosed are inks, color filters, and image displays using the color filters.

Abstract: Polymer-bonded functional agents are each obtained by reacting a functional agent containing reactive groups with a polymer containing groups reactive with the reactive groups of the functional agent. The functional agent comprises at least one functional agent selected from the group consisting of antioxidants, ultraviolet absorbers, light stabilizers, infrared absorbers and antistatic agents. Use of these polymer-bonded functional agents can provide articles with improved functions.

Abstract: An aqueous pigment dispersion is produced by ultrafinely dispersing a pigment dispersion mixture, which has been obtained by mixing at least a pigment and a dispersant in an aqueousmedium, with microbeads having diameters of not smaller than 0.02 mm but smaller than 0.2 mm. A color composition for a color filter is produced by dispersing a mixture of a pigment, a dispersant, a resin varnish and a solvent with the microbeads in a mill.

Abstract: A graft copolymer is formed by copolymerization of (A) a macromonomer and (B) a monomer. The macromonomer (A) is a polymer of (a) an ester monomer between an addition-polymerizable, unsaturated carboxylic acid and an aliphatic alcohol and (b) an addition-polymerizable monomer having an acidic group. The polymer contains an addition-polymerizable group at an end thereof, and has an acid value of from 100 to 300. The monomer (B) is an addition-polymerizable monomer. Units of the macromonomer (A) amount to from 20 to 50 wt. % of the whole graft copolymer, and units of the monomer (B) amount to from 50 to 80 wt. % of the whole graft copolymer.

Abstract: A water-based pigment ink contains a pigment, a hydrophilic dispersant, an aqueous medium, an alkali agent for solubilizing the hydrophilic dispersant in the aqueous medium, and a hydrophilic compound having at least one structural unit of “hydrophobic molecular chain-hydrophilic molecular chain-hydrophobic molecular chain” in a structure thereof. The water-based pigment ink is suited especially as an ink for ink-jet printers.

Abstract: A solidifying material for a cell electrolyte solution is a block copolymer, which comprises, as segments A, a polymer non-compatible with the cell electrolyte solution and, as segments B, a polymer compatible with the cell electrolyte solution. The solidifying material absorbs and solidifies the cell electrolyte solution. A smallest unit of the block copolymer is A-B-A. To each of the segments B, at least one group selected from the group consisting of a carboxyl group, an ester group, a hydroxyl group, a sulfonic group, an amino group, a cyclic carbonate group and a polyoxyalkylene group is bonded via a −S— bond or a —C— bond.

Abstract: A solidifying material for a cell electrolyte solution is a block copolymer, which comprises, as segments A, a polymer non-compatible with the cell electrolyte solution and, as segments B, a polymer compatible with the cell electrolyte solution. The solidifying material absorbs and solidifies the cell electrolyte solution. A smallest unit of the block copolymer is A-B-A. To each of the segments B, at least one group selected from the group consisting of a carboxyl group, an ester group, a hydroxyl group, a sulfonic group, an amino group, a cyclic carbonate group and a polyoxyalkylene group is bonded via a —S— bond or a —C— bond.

Abstract: A colored resin water distribution pipe formed of a colored resin composition which comprises a polyolefin resin as a main component and a blue fine powder pigment of a composite oxide which comprises two or more metal oxides and has a spinel crystal structure and a BET specific surface area of about 30 m2/g or more. The blue fine powder pigment is covered with an inorganic compound. The blue fine powder pigment is preferably treated mechanochemically by grinding. The colored resin water distribution pipe exhibits excellent resistance to water containing chlorine as a bactericide so that discoloration of the coloring component and formation of blisters on the inner face of the pipe by water containing chlorine are prevented.

Abstract: A finely divided pigment is formed of an aggregate of primary particles. A number of primary particles of not greater than 0.1 &mgr;m in particle size is at least 95% of an entire number of the primary particles, and a number of primary particles of greater than 0.1 &mgr;m in particle size is at most 5% of the entire number of the primary particles. The finely divided pigment can be produced by grinding a parent pigment (pre-division pigment) together with a water-soluble inorganic salt and a water-soluble organic solvent in a grinding machine at a temperature of from 30 to 90° C. for 2 to 6 hours under a load, and then removing the water-soluble inorganic salt and the water-soluble organic solvent. A coloring composition comprises a dispersing medium and the finely divided pigment dispersed in the dispersing medium.

Abstract: Ion-conducting (co)polymer media and ion-conducting oligomer media close in ion conductivity to organic-solvent-based electrolytes can be produced easily and safely on industrial scale. These ion-conducting (co)polymer media use (co)polymers containing at least one cyclocarbonato group, and these ion-conducting oligomer media employ oligomers containing at least two cyclocarbonato groups.

Abstract: A charge mosaic membrane having excellent selective permeability comprises a cationic polymer component, an anionic polymer component and a matrix component. Both of the cationic polymer component and the anionic polymer component are crosslinked particulate polymers. The matrix component is at least one polymer selected from a polysulfone resin, a polyarylate resin, a polyamide resin, a polyimide resin, a polyamideimide resin, a polyurethane resin, a fluorinated resin or a silicone resin. The charge mosaic membrane can be easily produced by conducting formation of the membrane by using a composition in which the cationic polymer component and the anionic polymer component are both dispersed in a solution of the matrix component in an organic solvent.

Abstract: A charge mosaic membrane having excellent selective permeability comprises a cationic polymer component, an anionic polymer component and a matrix component. Both of the cationic polymer component and the anionic polymer component are crosslinked particulate polymers. The matrix component is at least one polymer selected from a polysulfone resin, a polyarylate resin, a polyamide resin, a polyimide resin, a polyamideimide resin, a polyurethane resin, a fluorinated resin or a silicone resin. The charge mosaic membrane can be easily produced by conducting formation of the membrane by using a composition in which the cationic polymer component and the anionic polymer component are both dispersed in a solution of the matrix component in an organic solvent.

Abstract: Near-infrared transmitting black azo pigments are represented by the following formula (1) and have a crystalline form selected from the group consisting of a thin, long crystalline form and a leaf-shaped crystalline form: wherein R represents at least one group selected from the group consisting of lower alkyl groups having 1 to 3 carbon atoms and lower alkoxy groups having 1 to 3 carbon atoms, n stands for an integer of from 1 to 5, and, when n is other than 1, Rs may be the same or different. These near-infrared transmitting black azo pigments can be produced by treating the corresponding black azo pigments of the formula (1) with an alkali in an alcohol. Near-infrared transmitting black azo pigments compositions each comprises one or more of the near-infrared transmitting black azo pigments and a near-infrared transmitting material as a vehicle.

Abstract: A process produces a sulfonated solid particle by burning sulfur to yield gaseous sulfur dioxide, subjecting the gaseous sulfur dioxide to catalytic oxidation to yield gaseous sulfur trioxide, and sulfonating a dry powdery or granular solid particle with the gaseous sulfur trioxide in a gas phase-solid phase reaction.