Abstract: Disclosed are a color fading/discoloration preventive agent containing as its active ingredient a coumarin analog represented by general formula (1) below, a glycoside of that analog, or a plant extract containing the coumarin analog or its glycoside: (wherein R1 represents a hydrogen atom, a hydroxyl group or a methoxy group, R2 represents a hydrogen atom or a hydroxyl group, and R1 and R2 are not both hydrogen atoms); and a color fading/discoloration preventive agent containing as its active ingredient a coumarin analog mixture obtained from the rind of citrus fruit, and particularly a coumarin analog mixture obtained from citrus cold press oil.

Abstract: Disclosed are a color fading/discoloration preventive agent containing as its active ingredient a coumarin analog represented by general formula (1) below, a glycoside of that analog, or a plant extract containing the coumarin analog or its glycoside: 1

Abstract: Aqueous based pigment dispersions wherein the pigment is dispersed in a dispersant dye in the absence of any other dispersant or additive and aqueous based printing ink compositions containing these a pigment dispersions. Methods for preparing aqueous based pigment dispersions, wherein the pigment is dispersed in a dispersant dye, and method for preparing printing ink compositions incorporating these dispersions.

Abstract: The invention relates to mixtures containing pigments which comprise oriented three-dimensionally crosslinked substances having a liquid-crystalline structure with a chiral phase, and to the use of such mixtures. Pigment and matrix are matched to one another in such a way that on application of the mixture at different temperatures to a substrate, the lowest application temperature and highest application temperature differing by at least 10° C. and by not more than 150° C., there are no visually perceptible color differences of the pigmented paint on the substrate after drying.

Abstract: This invention relates to a process for preparing perylene pigment compositions by reaction of(a) a perylene tetracarboxylic compound;(b) about 0.01 to about 20% by weight, relative to the perylene tetracarboxylic compound, of a non-pigmentary cyclic anhydride or imide of formula (I) ##STR1## wherein W is O or NR' (where R.sup.1 is hydrogen, a metal, or optionally substituted alkyl, cycloalkyl, aralkyl, or aryl), R.sup.2, R.sup.3, and R.sup.4 are various combinations of substituents and/or fused-on rings, and the dotted line is an optional double bond representing R.sup.2 --C.dbd.C--R.sup.3 ;(c) ammonia or a primary alkyl, aralkyl, or aryl amine; optionally in the presence of(d) a solvent and/or(e) one or more dispersants.

Abstract: A crystal growth inhibitor for azo pigments is disclosed. The crystal growth inhibitor comprises: (1) one or more sulfonated or carboxylated amines, and (2) one or more coupling components selected from the group consisting of acetoacetanilides, naphthanilides, pyrazalones and benzamidazoles; the coupling component being bonded to the sulfonated or carboxylated amines. The crystal growth inhibitor can be produced separately and added to the coupling component prior to the coupling reaction, or it can be formed in situ with the pigment. Preferably, an improved pigment according to the invention includes 2% to 5% by weight of the crystal growth inhibitor. Monoazo pigments including the crystal growth inhibitor have been shown to have greatly improved gloss, transparency and tinctorial strength.

Abstract: Composite pigments based on nanoparticulate metal oxides modified by crosslinked or uncrosslinked polyalkylenepolyamine and anionic dyes are useful for coloring paints, inks, plastic, paper, wood, leather and textile materials.

Abstract: The invention relates to a process of using certain piperidine compounds of formula I ##STR1## in which R.sub.1 is hydrogen, hydroxyl, lower alkyl, lower alkoxy or acyl,R.sub.2 is a substituted or unsubstituted mono- or bicyclic radical which is aromatic in type,R.sub.3 is oxygen, --NH-- or --N(C.sub.1-4 -alkyl)-- andR.sub.8 independently at each occurrence is hydrogen or methylfor stabilizing natural or synthetic, organic or inorganic pigments or pigment mixtures in natural or synthetic, polymeric or prepolymeric substrates against the adverse effects of heat and/or light on the light fastness and color stability, respectively, especially against alterations in shade or light-induced bleaching. The invention also relates to a masterbatch composition.

Abstract: A colorless or only slightly colored pigment dispersing agent which is feasible as a pigment dispersing agent for pigments having various hues and has the general formula (1), ##STR1## wherein R.sub.1, R.sub.2, X.sub.1, Y.sub.1, Y.sub.2, k and h are as defined in claim 1.

Abstract: Thermoplastic, non-water soluble, fluorescent pigments having improved lightfastness are provided which are suitable for coloring a variety of materials including plastics, particularly polyolefins, as well as paints, inks and textiles. The pigments of the present invention referred to herein as the "light fast pigments" demonstrate good color, migration resistance, heat stability, water insolubility, friability and resistance to plateout. The light fast pigments of the present invention have several embodiments, the polyamide embodiment, polyamide ester embodiment and the polyester embodiment. The pigments of the present invention comprises a polymer which comprises polymerized units of fluorescent dye and polymerized monomers such as for example dicarboxylicacids, polycarboxylicacids, diamines, polyamines, alkanolamines, carboxyalcohols, carboxyamines and difunctional alcohols, and/or polyhydric alcohols.

Abstract: A stir-in pigment composition for coloring high-molecular-weight material, particularly coatings and ink systems, comprises 85 to 99.5 parts by weight of a pigment and 0.5 to 15 parts by weight of an additive comprising a vinylpyrrolidone polymer or copolymer. The stir-in pigment composition is in the form of microgranules and is obtainable by spray drying a high solids content aqueous pigment dispersion containing the pigment and the additive. The new pigment composition powders are easily handled, easily wetted and disperse rapidly to form homogeneous aqueous pigment dispersions which are practically free of larger pigment aggregates and can readily be incorporated into aqueous ink and paint systems as stir-in pigments without a dispersion step in a bead mill.

Abstract: The invention relates to a pigment with color dependent on the viewing angle, which has been obtained by three-dimensional crosslinking of oriented substances of liquid-crystalline structure having a chiral phase. In order to stabilize the color of such a pigment at elevated temperatures, crosslinking is carried out in the presence of at least one additional, color-neutral compound comprising at least two crosslinkable double bonds.

Abstract: A composite melanin pigment in the form of particles comprising a spherical core less than 1 .mu.m in diameter, which comprises at least one wax and at least one surfactant, and an outer layer which envelops the core, which comprises at least one compound resulting from the oxidative polymerization of a melanin pigment precursor; and uses of the pigment in powder form or in the form of an aqueous dispersion, in cosmetic compositions, in particular in dye products and/or make-up products and/or care products for keratin substances such as the skin, the hair and the nails.

Abstract: Process for preparing pigments by applying a polymerizable mixture to a surface, orienting the liquid crystals present in the mixture, polymerizing the mixture, detaching the polymer film from the surface and comminuting the polymer film to form pigment particles, wherein the polymerizable mixture comprises:a.sub.1) at least one chiral liquid-crystalline polymerizable monomer ora.sub.2) at least one achiral liquid-crystalline polymerizable monomer and a chiral compound, and additionallyb) a polymeric binder and/or monomeric compounds which are converted by polymerization into a polymeric binder and/or a dispersion auxiliary.

Abstract: This invention relates to a process for preparing pigment compositions by conditioning an organic pigment, at about 50 to about 200.degree. C., with(1) at least about 0.1% by weight, relative to the organic pigment, of one or more surfactants of formula (I) ##STR1## wherein R.sup.1 is a C.sub.8 -C.sub.30 aliphatic group optionally having one or more carbon atoms in the main chain replaced with --O--, --S--, --CONH--, --NHCO--, --CH.dbd.CH--, C.sub.5 -C.sub.7 cycloalkylene, phenylene, or --OSi(C.sub.1 -C.sub.4 alkyl).sub.2 -,R.sup.2 is hydrogen, C.sub.1 -C.sub.6 alkyl, or C.sub.1 -C.sub.6 hydroxyalkyl,R.sup.3 is hydrogen, C.sub.1 -C.sub.6 alkyl, or C.sub.1 -C.sub.6 hydroxyalkyl, or R.sup.2 and R.sup.3 together are C.sub.4 -C.sub.7 alkylene, andX is a direct bond, or X and R.sup.2 form a five- to seven-membered heterocyclic ring (and R.sup.3 can form a double bond in X), or X, R.sup.2, and R.sup.

Abstract: This invention relates to a process for preparing pigment compositions by conditioning an organic pigment, at about 50 to about 200.degree. C., with(1) at least about 0.1% by weight, relative to the organic pigment, of one or more surfactants of formula (I) and/or formula (II) ##STR1## and/or ##STR2## wherein R.sup.1, R.sup.2, R.sup.3, X, Y, Z, and Z' are defined herein; and (2) about 1 to about 100 parts by weight, per part by weight of the organic pigment, of a liquid in which the organic pigment is substantially insoluble.

Abstract: A diketopyrrolopyrrole of formula ##STR1## in its .beta.-modification. The novel .beta.-modification is also suitable as pigment for coloring high molecular weight organic materials. In comparison to the .alpha.-modification, it has a shade shifting towards blueish red, enhanced color strength and chroma as well as an enhanced resistance to heat.

Abstract: The invention relates to a liquid crystalline, photo cross-linkable main-chain polymer used as interferentially effective, chromophoric substance for colored paints, in which the main mesogenic groups are disposed at least approximately in a chiral-nematic manner. An etherified cellulose ether or a mixture of several etherified cellulose ethers is used pursuant to the invention as liquid crystalline main-chain polymer or polymers wherein:the cellulose ethers have a molecular weight of 500 to 1,000,000,the anhydroglucose units of the cellulose ethers are etherified with an average degree of molar substitution of 2 to 7 with propylene oxide or ethylene oxide units (C.sub.3 H.sub.6 O- or C.sub.2 H.sub.4 O-units), andthe cellulose ethers are etherified with an average degree of molar substitution of 1.5 to 3 with unsaturated hydrocarbon groups (C.sub.r H.sub.2r-1).

Abstract: The present invention discloses coated objects, such as car bodies, as well as coatings for coating such objects. In order to achieve new, hitherto unknown color effects with said coatings, at least some, and preferably only platelet-like interference pigments are mixed into the coating. When the coating is applied, the interference pigments automatically align themselves in a direction approximately parallel to the object surface. These interference pigments are made of liquid crystalline side chain polymers with a nematic and a chiral component, in which the side group mesogens are at least approximately nematic, smectic and/or cholesteric. Particularly intensive tones having a hitherto unknown brilliance may thus be obtained on a coated object, or a shimmering effect depending on the angle of incidence of light and viewing direction.

Abstract: A method of hydrophobing fillers such as inorganic pigments, metal oxides, metal hydroxides, and silicate minerals, involves contacting a filler with an oxa-silacycloalkane, until hydroxyl functionality on the filler is replaced with carbinol functionality (i.e. .tbd.C--OH). The preferred oxa-silacycloalkane is 2,2,4-trimethyl-1-oxa-2-silacyclopentane.

Abstract: Pigment preparations comprisinga) at least one monoazo pigment of the formula (I) ##STR1## in which R is identical or different at each occurrence and is C.sub.1 -C.sub.3 -alkyl, C.sub.1 -C.sub.3 -alkoxy, chlorine or hydrogen, andn is a number from 1 to 3,b) at least one compound of the formula (II) ##STR2## in which R.sup.1 and R.sup.2 are identical or different and are a radical of the formula ##STR3## or a five- to seven-membered, saturated or unsaturated, aliphatic or aromatic heterocyclic ring which includes from 1 to 3 heteroatoms from the group consisting of nitrogen, oxygen and sulfur,m is the number 1 or 2, andX is hydrogen, an alkali metal or a stoichiometric equivalent of an alkaline earth metal;and, if desired,c) further, conventional constituents and additives are particularly suitable for the production of printing inks.

Abstract: A process for conditioning diaryldiketopyrrolo[3,4-c]pyrrole pigments (DPP) and for preparing solid solutions having a DPP component are disclosed. The inventive processes involve dissolving the DPP in aqueous, basic DMSO, alone, or in mixture with additional components in the case of a solid solution, and then precipitating the conditioned pigment or pigment solid solution by methods known in the art.

Abstract: The present invention relates to a process for coloring polymeric materials by dyeing or pigmenting said polymeric materials with a pigment salt having the formula (I): ##STR1## and tautomeric forms thereof, wherein M.sup.n+ is an n-valent cation.

Abstract: A coatable composition suitable for reducing dust generation during processing of granular materials consists essentially of a tackifier, an organic oil, and an adhesion agent, the tackifier consisting essentially of an organic material having a glass transition temperature of no less than about 120.degree. C. and a diluent present in sufficient amount to give the tackifier a kinematic viscosity ranging from about 3,000 to about 5,000 centistokes at 100.degree. C. The tackifier is preferably present in the composition at about 0.5 to about 2.0 weight percent of the total weight of the composition, and the adhesion agent is preferably present at about 0.5 to about 5.0 weight percent of the total weight of the composition, with the balance being organic oil.

Abstract: A method and article of manufacture thereof is provided for reducing brightness reversion in bleached lignin-containing pulps or newsprint by the treatment of the bleached lignin-containing pulp or newsprint with 2,5-dihydroxydioxane. In one embodiment, calcium carbonate is added to enhance the activity of 2,5-dihydroxydioxane.

Abstract: A melanin-coated pigment obtained by coating a carrier with a readily alkali-soluble natural melanin, and a cosmetic containing the pigment are provided. The melanin-coated pigment is highly safe and has high coloring and high saturation tone, and a cosmetic which contains it is also expected to have ultraviolet-ray-absorbing and anti-oxidizing effects.

Abstract: A water base paint composition containing a mica-containing pigment(s), said composition comprising a water base paint containing a water soluble or water dispersion film-forming polymer selected from among acrylic resin, polyester resin, alkyd resin and polyurethane resin, a cross-linking agent and optional additives such as pigments, thickeners, fillers, etc., wherein a mica-containing pigment(s) comprised of mica flakes or metal-oxide-coated mica flakes with a surface acid content of 0-10 micromol/g, a surface base content of 0-30 micromol/g and a heat of water wetting of 0-1.5 J/g, the surface of which pigment being uniformly coated with melamine resin which has at least one triazine ring per molecule, is uniformly dispersed in said water base paint.

Abstract: The water-insoluble dyes of the formula I ##STR1## in which, for example, F is the dye chromophore of C.I. Leuco Sulphur Black 1,R is hydrogen, alkyl,M.sup..sym. is a quaternary ammonium cation or phosphonium cation in which the sum of carbon atoms in the hydrophobic radicals present is at least 6, andn is such a large number that the dye I contains 5 to 20% by weight of --COO.sup..crclbar. groups,are suitable in particular for producing recording fluids.

Abstract: The water-insoluble sulphur dyes of the general formula I ##STR1## in which F is a dye chromophore of, for example, C.I. Sulphur Black 1 and R.sup.1 to R.sup.4 and n are as defined in Claim 1, are suitable in particular for producing recording fluids.

Abstract: The invention relates to pigments whose color depends on the viewing angle, their preparation and use.These pigments comprise oriented three-dimensionally crosslinked substances of liquid-crystalline structure having a chiral phase and, if desired, further dyes and pigments, the further dyes and pigments if present not serving as base for the oriented three-dimensionally crosslinked liquid-crystalline substances having a chiral phase.

Abstract: A method and article of manufacture thereof is provided for reducing brightness reversion in bleached lignin-containing pulps or newsprint by the treatment of the bleached lignin-containing pulp or newsprint with 2,5-dihydroxydioxane. In one embodiment, calcium carbonate is added to enhance the activity of 2,5-dihydroxydioxane.

Abstract: 2-(2-Hydroxyphenyl)-4,6-diphenyl- and -4,6-di-p-tolyl-1,3,5-triazines are particularly suitable stabilisers, especially against light-induced degradation, for coating materials. They are superior in this respect to the corresponding 4,6-bis(2,4-dimethylphenyl) derivatives.

Abstract: Product obtained from the reaction of(a) an amine-diol resulting from the reaction of a primary amine having the formula R-NH.sub.2 in which R represents an aliphatic or aromatic radical, with at least one alkylene oxide comprising predominantly propylene oxide, and(b) at least one polyfunctional substance, capable of acting on the hydroxyl groups of said amine-diol.The product disclosed may be used as an additive in an electrodeposition paint composition in order to furnish, after application to a metal substrate, a coating or film having an improved resistance to pinholes and to cratering.

Abstract: Pigment dispersing vehicles which are polymers containing one or more groups of the structure: ##STR1## are disclosed. The pigment dispersing vehicles can be used to form pigment dispersions by the pigment flushing mechanism. The resultant dispersions have high pigment loadings and color strength enabling them to be used across many coating lines.

Abstract: An aqueous ink jet composition comprising a pigment dispersion, an aqueous carrier medium, and a cosolvent mixture comprising a polyol/alkylene oxide condensate and a cyclic amide derivative have excellent print quality due to high optical density and minimum feathering over a wide range of commercial papers having different properties, dry rapidly by media penetration without excessive loss of image definition, and become 100% waterfast as soon as the inks are dry to the touch.

Abstract: 2-(2-Hydroxyphenyl)-4,6-diphenyl- and -4,6-di-p-tolyl-1,3,5-triazines are particularly suitable stabilizers, especially against light-induced degradation, for coating materials. They are superior in this respect to the corresponding 4,6-bis(2,4 -dimethylphenyl) derivatives.

Abstract: A method for dispersing a comminuted solid in an aqueous medium is described. An aqueous dispersing agent is added to an aqueous medium in an amount sufficient to disperse the comminuted solid in the aqueous medium. The aqueous dispersing agent includes from about 10 wt. % to about 55 wt. % of an amine compound selected from the group consisting of alkanolamines, triethylamine and morpholine, from about 15 wt. % to about 35 wt. % of a base selected from the group consisting of sodium hydroxide and potassium hydroxide, and from about 0.1 wt. % to about 15 wt. % chelating agent.

Abstract: The invention relates to readily dispersible pigment formulations which are stable to flocculation and are used for pigmenting naturally occurring and synthetic materials, preferably paints and printing inks, plastics and lacquers, in particular stoving lacquers. The pigment formulations contain compounds of the general formula (I) ##STR1## in which Q.sup.1, Q.sup.2 and Q.sup.3 each denote --X--A, --OR.sup.1, --SR.sup.1, halogen, --NR.sup.2 R.sup.3 or a radical Q which is built up from up to 15 trivalent groups (Ia) such that in each case one group (Ia) is bonded via W to a free valency of the next group (Ia) or to the triazine ring of (I) and the other free valencies are bonded to --X--A, --O--R.sup.1, halogen or --NR.sup.2 R.sup.3, at least one radical --X--A being present in (I), and A stands for an aromatic system with 2 to 6 rings and at least 9 ring atoms, or stands for a group of 2 to 3 aromatic ring systems, bonded via O, S, CO, SO, SO.sub.2 or C.sub.1 -C.sub.

Abstract: Pigment preparations consisting of organic pigments and basic additives of the general formula I(Q-A).sub.x Y (I)in which Q is a radical of the formula II ##STR1## in which R.sup.1 is halogen, an alkyl, alkoxy or cyano group, R.sup.2 is halogen, m and n are integers from 0 to 4, A is a chemical bond or a divalent group from the series consisting of --(CH.sub.2).sub.p --, --CR.sup.3 R.sup.4 --, arylene, --S--, --O-- and --NR.sup.5 --, in which p is an integer from 1 to 12, R.sup.3 is hydrogen or alkyl, R.sup.4 is alkyl and R.sup.5 is hydrogen or alkyl, Y is a tertiary nitrogen atom or a group ##STR2## in which R.sup.6, R.sup.7 and R.sup.8 are alkyl or alkenyl or a cycloaliphatic or araliphatic radical or an alkyleneheteroaryl radical, or Y is a saturated or unsaturated heterocyclic radical in which at least one tertiary nitrogen atom is included in the meanings mentioned for Y and x is a number from 1 to 6.

Abstract: A process for the preparation of pigment preparations of the anthanthrone series, which comprises subjecting anthanthrone crude pigments to aqueous pearl milling in the presence of dispersants of the formulaeQ.sub.1 -[A.sub.1 -X].sub.n (I)and/or[Q.sub.2 -A.sub.2 ].sub.z -Y (II)in which in formula (I) Q.sub.1 is the radical of an anthanthrone, azo, isoindolinone, diketopyrrolopyrrole or perinone compound, A.sub.1 is a direct bond or --O--, --S--, --NR.sub.3, --CO--, --SO.sub.2 --, --CR.sub.4 R.sub.5 -- or arylene, X is a group ##STR1## or a heterocyclic radical having at least one nitrogen atom, and R.sub.3, R.sub.4, R.sub.5, R.sub.6 and R.sub.7 are hydrogen atoms or saturated or unsaturated alkyl groups and n is 1 to 4, and in formula (II) Q.sub.2 is a radical of the formula ##STR2## in which R.sub.1 is hydrogen, halogen, alkyl, alkoxy or cyano, or, in the case that m.sub.1 >1, R.sub.1 can also be a combination of these substituents, R.sub.

Abstract: Solid solutions consisting of at least two different compounds of the formula I ##STR1## in which A is one of the groups ##STR2## in which R and R.sup.1 independently of one another are hydrogen, halogen, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy, X is halogen, Y and Z independently of one another are halogen, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylmercapto, C.sub.5 -C.sub.6 cycloalkoxy, phenoxy which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.4 alkyl, wherein the compounds of the formula I which form the solid solutions differ in at least one of the substituents X, Y or Z and/or in the group A and the X-ray diffraction patterns of the solid solutions differ from the sum of the X-ray diffraction patterns of the individual components.This type of solid solution is highly suitable for use as pigments for the dyeing of high-molecular-weight organic material.

Abstract: Stabilizing inorganic fillers or pigments having simultaneous reinforcing effect and stabilizing effect on organic polymers are obtained by a process comprising the following stages:(a) bringing the inorganic filler or pigment into contact with a solution, in an inert organic solvent, of a sterically hindered amine comprising one or more alkoxysilane groups in its molecule;(b) maintaining the obtained mixture at higher than ambient temperature (20.degree.-25.degree. C.) for a period of at least 0.5 hours;(c) removing the solvent, treating at a temperature of 120.degree.-200.degree. C. and recovering the stabilizing filler or pigment obtained.