Subject matter are aqueous, low-VOC/SVOC universal pigment preparations comprising a pigment component, a water-soluble, anionic, surface-active additive from the group of the homo- and copolymers of ethylenically unsaturated monocarboxylic or dicarboxylic acids, which may further comprise, in copolymerized form, vinyl monomers containing no acid function, and of the salts of these homo- and copolymers, the homo- and copolymers being at least partly esterified with a polyether alcohol or a derivative thereof, and comprising a phosphoric or phosphonic ester, and optionally customary additives. The aqueous pigment preparations are suitable for the coloring of inks, paints, and renders, especially in metering systems at the point of sale or in in-plant tinting systems.

It is an object of the present technology to overcome the disadvantages of conventional chlorination of a copper phthalocyanine which produces copper phthalocyanine, wherein the number of chlorines is less than or equal to 4. The pigments described herein contain less chlorine than standard commercial grades of tetrachlorinated (or greater) copper phthalocyanine pigments while achieving similar color space, chromaticity, fastness properties, and color travel in automotive waterborne and solvent borne systems. The inventive pigments are more advantageous from a toxicity and environmental perspective, and allow the manufacturer to produce pigments in a safe and economical manner.

The present invention relates to [1] a process for producing a fine organic pigment, including step 1 of kneading a mixture prepared by compounding a raw material organic pigment, a water-soluble inorganic salt and a water-soluble organic solvent; and step 2 of subjecting the kneaded mixture obtained in the step 1 to cleaning treatment with an aqueous solvent and then to filtration treatment, in which before or after kneading the mixture in the step 1 and before subjecting the kneaded mixture to filtration treatment in the step 2, a sulfonic acid salt dispersant is compounded in an amount of not less than 0.8 part by mass and not more than 8.0 parts by mass on the basis of 100 parts by mass of the raw material organic pigment; [2] a process for producing a dispersion, including step 3 of subjecting a pigment mixture containing the fine organic pigment obtained by the production process according to the above [1], an organic solvent and water to dispersion treatment; and [3] a process for producing an ink, including step 4 of mixing the dispersion obtained by the production process according to the above [2] with at least one medium selected from the group consisting of water and an organic solvent.

An embodiment of the present invention is to provide a resin composition including a near infrared absorbing coloring agent represented by Formula (1) and a resin, a resin molded article, and a method of producing a resin molded article. In Formula (1), a ring A and a ring B each independently represent an aromatic ring or a heteroaromatic ring, X.sup.A and X.sup.B each independently represent a monovalent substituent, G.sup.A and G.sup.B each independently represent a monovalent substituent, kA represents an integer of 0 to n.sub.A, kB represents an integer of 0 to n.sub.B, n.sub.A represents the largest integer of G.sup.A which may be substituted in the ring A, n.sub.B represents the largest integer of G.sup.B which may be substituted in the ring B, X.sup.A and G.sup.A, and X.sup.B and G.sup.B may be respectively bonded to one another to form a ring, and in a case where a plurality of G.sup.A's and G.sup.B's are present, the plurality of G.sup.A's and the plurality of G.sup.B's may be respectively bonded to one another to form a ring structure. ##STR00001##

The invention provides a disperse dye color paste for waterless dyeing, which comprises, by weight, 10%-40% of disperse dye filter cakes, 2%-35% of a dispersant, 5%-20% of a dyeing auxiliary, 0.1-0.5% of a surfactant, and 20%-88% of a solvent. The disperse dye color paste for waterless dyeing of the invention has a small particle size; and after waterless dyeing, a textile does not contain cleavable carcinogenic aromatic amine azo dyes, allergenic dyes, forbidden aromatic amine or bioactive substances. The disperse dye color paste for waterless dyeing of the invention can be stably stored for 6-12 months which is beneficial to the transportation of dyes and the production management of dyeing factories. Moreover, a dyeing effect featuring a high fixation rate is realized after the disperse dye color paste for waterless dyeing is applied to textiles.

The present invention provides a pyrimidoquinazoline pigment having a novel pyrimidine skeleton, the pyrimidoquinazoline pigment having excellent pigment properties, such as coloring power and durability, and excellent infrared reflectivity and a method for producing the pyrimidoquinazoline pigment, and a pigment colorant using the pyrimidoquinazoline pigment. The present invention relates to a pyrimidoquinazoline pigment represented by the following formula (1), wherein R.sub.1 and R.sub.2 each independently represent a benzene ring or a naphthalene ring optionally having a substituent, and a method for producing the pyrimidoquinazoline pigment. In addition, the present invention relates to a pigment colorant containing the pyrimidoquinazoline pigment.

##STR00001##

The present invention belongs to the field of natural pigment modification and specifically relates to an oil-soluble beetroot red pigment, its preparation method and application. An aqueous solution containing beetroot red pigment and phospholipids is added to an aqueous solution containing water-soluble proteins and/or water-soluble peptides, and the mixture is dried to obtain an oil-soluble beetroot red pigment composite powder. The powder is subjected to low-temperature ultra-fine grinding to produce ultra-fine oil-soluble beetroot red pigment powder. Finally, the ultra-fine powder is added to vegetable oil and processed through a ball mill-colloid mill cycle to obtain the oil-soluble beetroot red pigment. The oil-soluble beetroot red pigment requires no chemical modification and contains no synthetic emulsifiers or additives. The materials used are natural and safe, improving the light stability and thermal stability of beetroot red pigment, expanding its application scope, and providing a viable alternative to industrially synthesized oil-soluble pigments.

The invention provides a process for preparing N,N-di(3,5-dimethylphenyl)perylene bis(dicarboximide), and other pigments having modified properties, by reaction of perylene-3,4,9,10-tetracarboxylic dianhydride with 3,5-dimethylaniline, or a mixture of 3,5-dimethyl aniline and at least one other primary amine, in the presence of a secondary amine or tertiary amine as catalyst, wherein the reaction occurs in an aqueous reaction medium and in the presence of added seed crystals of N,N-di(3,5-dimethylphenyl) perylenebis(dicarboximide), such that the aqueous medium is present at the beginning of the reaction.

Provided is an organic pigment composition for color filters, which can be used preferably for a color filter that allows to produce a liquid crystal display device which has excellent heat resistance, a brighter display screen, and accordingly higher brightness; a method for producing the same; and a color filter which includes the organic pigment composition for color filters. The color filter has higher heat resistance by using the organic pigment composition for color filters which includes a phthalocyanine pigment and a pigment derivative in which the ratio of a multi-substituted phthalimide alkyl group to the whole amount of the pigment derivative is limited.

Provided herein are hybrid pigments and methods of making the same. The hybrid pigments include a natural polyamide substrate and an acid dye disposed on the natural polyamide substrate. The hybrid pigments are biodegradable, compostable, or both, and provide an environmentally friendly alternative to synthetic polymer particle-based pigments.