Abstract: A new gamma-I type quinacridone pigment characterized by C.I.E color space values in masstone, and a process for its preparation is disclosed. The new gamma quinacridone pigment is especially useful for coloring coating compositions, such as automotive paints, and plastics.

Abstract: A process for preparing an unsubstituted or substituted quinacridone of the formula or a solid solution of quinacridones of the formula (I), wherein X and Y are independently 1 or 2 substituents selected from hydrogen, fluorine, chlorine, C1-C3alkyl, C1-C3alkoxy and COOR wherein R is hydrogen or C1-C10alkyl in which a salt of a corresponding 6,13-dihydroquinacridone of formula II  having the same substitutions as the desired quinacridone of formula I, or a mixture of corresponding 6,13-dihydroquinacridones of formula II, is oxidized with an oxygen containing gas in the presence of an aqueous base and a catalytically effective amount of an oxidation catalyst, characterized in that the oxidation is performed in the presence of an polyglycolic reaction medium of formula R1—O—[(CH2)m—(CHR1′)n—O]x—O—R1″  (III).

Abstract: Radiation-sensitive compositions comprising (a1) a cationically or acid-catalytically polymerisable or crosslinkable compound or (a2) a compound that increases its solubility in a developer under the action of acid; and (b) at least one diaryliodonium salt of formula I X is branched C3-C20alkyl or C3-C8cycloalkyl; X1 is hydrogen, linear C1-C20alkyl, branched C3-C20alkyl or C3-C8cycloalkyl; with the proviso that the sum of the carbon atoms in X and X1 is at least 4; Y is linear C1-C10alkyl, branched C3-C10alkyl or C3-C8cycloalkyl; A− is a non-nucleophilic anion, selected from the group (BF4)−, (SbF6)−, (PF6)−, (B(C6F5))4−, C1-C20alkylsulfonate, C2-C20haloalkylsulfonate, unsubstituted C6-C10arylsulfonate, camphorsulfonate, and C6-C10arylsulfonate substituted by halogen, NO2, C1-C12alkyl, C1-C12halo-alkyl, C1-C12alkoxy or by COOR1; and R1 is C1-C20alkyl, phenyl, benzyl; or phenyl mono- or poly-substituted by C1-C12alkyl, C1-C12alkoxy or by halogen; with the

Abstract: The present invention provides a process for the production of pigmentary copper phthalocyanine in the beta crystalline phase comprising: a) dry or aqueous milling of crude copper phthalocyanine in combination with a natural or chemically modified resin and, optionally, a grinding auxiliary followed by; b) isolation of the milled mass followed by; c) conditioning treatment of the milled mass.

Abstract: A simplified method for the optical brightening of paper either in the pulp mass, the size or metering press or by coating by the use of a formulation of an optical brightening agent together with a swellable layered silicate.

Abstract: Compounds of the formula (I) in which the polydispersity {overscore (M)}w/{overscore (M)}n is 1; n is 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15; the radicals R1 are for example hydrogen or C1-C8alkyl; R2 is for example C2-C12alkylene; the radicals A are independently of one another —OR3, —N(R4)(R5) or a group of the R3, R4 and R5, which are identical or different, are for example hydrogen or C1-C18alkyl, or —N(R4)(R5) is additionally a group of the formula with Y being —O—, —CH2—, —CH2CH2— or >N—CH3; X is —O— or >N—R6; R6 is for example hydrogen or C1-C18alkyl; R is preferably a group of the formula and the radicals B have independently of one another one of the definitions given for A; with the proviso that in the individual recurrent units of the formula (I), each of the radicals B, R, R1 and R2 has the same or a different meaning, are useful as ligh

Abstract: Preparing pigment preparations by mixing a dyestuff with a monomer and simultaneously polymerizing the monomers in an extruder at elevated temperatures, wherein the following steps are carried out: (A) introducing continuously into an extruder (a) from 40 to 90% by weight of a pigment, (b) from 60 to 10% by weight of a monomer or a monomer mixture, and (c) from 0.

Abstract: Compounds of the formula I in which R1 is C1-C4alkyl, R2 is hydrogen, C1-C4alkyl or C1-C4alkoxy and R3, R3, R4, R5, R6, and R7 independently of one another are hydrogen, halogen, C1-C20alkyl, cyclopentyl, cyclohexyl, C2-C12alkenyl, C2-C18 alkyl which is interrupted by one or more oxygen atoms, or are phenyl-substituted C1-C4alkyl, or are phenyl which is unsubstituted or is mono- or disubstituted by C1-C4alkyl and/or C1-C4alkoxy, with the provisos that at least one of the radicals R3, R4, R5, R6 and R7 is other than hydrogen and that, if R1 and R2 are methyl, R3 and R6 are not methyl, and mixtures of such compounds with &agr;-hydroxy ketones, benzophenones and &agr;-amino ketones, are suitable as photoinitiators.

Abstract: A process for the preparation of a quinacridone of the formula: wherein A and B each independently represent a substituent selected from H, F, Cl, C1-C3alkyl and C1-C3alkoxy, including the steps of: (A) heating a reaction mixture containing (a) at least one unsubstituted and/or substituted 2,5-diarylamino-6,13-dihydroterephthalic acid and (b) about 3 to about 10 parts by weight of polyphosphoric acid per part of component (a) to a temperature of above about 125° C. to form a quinacridone melt; (B) treating the quinacridone melt resulting from (A) with about 1% to about 30% by weight, based on the weight of component (a), of concentrated sulfuric acid, to form a reaction mixture; (C) drowning the reaction mixture of (B) in a liquid in which the quinacridone is substantially insoluble; and (D) recovering the resulting quinacridone pigment.

Abstract: A pigment composition comprising pigment and an amido phthalocyanine compound having the general formula I: MPc—(CONR1R2)n  I wherein which Pc is a phthalocyanine ring which is optionally further substituted by up to an average of one chlorine or bromine atom or of a sulphonic acid; M is hydrogen or a metal such as Mg, Al, Ni, Fe, Zn, Pb, Sn or Cu: n is a number ranging from 0.1 to 4.0; R1 and R2 are independently selected from hydrogen, C1-C20 alkyl, C5-C12 cycloalkyl, C7-C12 aralkyl, C6-C10 aryl, C4-C6 alkyl amino alkyl, C2-C20 aliphatic amine, C2-C20 aliphatic amine acid salt, C2-C20 alcohol, polyoxyalkylene, polyoxyalkylene amine.

Abstract: A microbead comprising at least one thermoplastic polymers having distributed one or more compounds which are pigment precursors, the melting temperature of the lowest-melting polymer of the microbead being at least higher than the lowest temperature required to transform all pigment precursors in the microbead into the respective pigments.

Abstract: Dibenzonaphthyrone of formula (I) wherein A1 and A2 independently of each other are unsubstituted or mono- to tetra-substituted o-C6-C18arylene, with the proviso that formula (I) does not represent a dibenzonaphthyrone of the formula The invention further relates to processes for the preparation thereof, to the use thereof for colouring/pigmenting high-molecular-weight organic material and to substance compositions comprising dibenzonaphthyrones.

Abstract: The invention relates to organic compounds having a molecular weight of less than 1000 comprising at lease one structural unit of the formula (I) in which R1 is an aromatic or heteroaromatic radical which is capable of absorbing light in the wavelength range from 200 to 650 nm and in doing so brings about cleavage of the adjacent carbon-nitrogen bond. The compounds represent photoinitiators for base-catalysable reactions. Other subjects of the invention are base-polymerizable or crosslinkable compositions comprising compounds having a structural unit of the formula I, a method of implementing photochemically induced, base-catalysed reactions, and the use of the compounds as photoinitiators for base-catalysed reactions.

Abstract: Compounds of formula A(B)x  (I), wherein x is an integer from 1 to 8, A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, indanthrone, isoindolinone, isoindoline, dioxazine, azo, phthalocyanine or diketopyrrolopyrrole series that is bonded to x groups B via one or more hetero atoms, those hetero atoms being selected from the group consisting of N, O and S and forming part of the radical A, each group B independently of any other(s) is hydrogen or a group of the formula  at least one group B being a group of the formula The compounds according to the invention are used in high-molecular-weight organic materials, thermo-, photo- or chemo-sensitive recording materials, light-sensitive negative or positive resist compositions, ink compositions for ink-jet printing and color tapes for thermal transfer printing.

Abstract: Compounds of formula A(B)x,  (I), wherein x is an integer from 1 to 4, A is the radical of a chromophore of the quinacridone, anthraquinone, perylene, indigo, quinophthalone, isoindolinone, isoindoline, dioxazine, phthalocyanine or azo series, which radical contains x N-atoms attached to B, preferably with at least one directly adjacent or conjugated carbonyl group, B is a group of formula and, if x is 2, 3 or 4, may also be one, two or three hydrogen atoms. The symbols Q, R1, R2, R3, R4, X, Y, Z, m and n, are as defined in claim 1. These carbamate group-containing soluble chromophores are distinguished by outstanding solid state fluorescence in the UV range as well as the by ease with which they can be converted to the corresponding pigments in the substrate in which they are incorporated.

Abstract: Compounds of formula (I), in which the polydispersity Mw/Mn is for example 1; n is 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 or 14 the radicals R1 are for example C1-C18alkyl or C5-C12cycloalkyl; R2 is for example C-Cl2alkylene; the radicals A and B* are independently of one another —OR3, —N(R4)(R5) or a group of formula (II); R3, R4 and R5, which are identical or different, are for example hydrogen or C1-C18alkyl, or —N(R4)(R5) is additionally a group of formula (III) with Y being —0—, —CH2—, —CH2, —CH2— or >N—CH3; X is —0— or >N—R6; R6 is for example hydrogen or C1-C18alkyl; R is preferably a group of formula (IV); and B has one of the meanings given for A; with the proviso that in the individual recurrent units of formula (I), each of the radicals B, R, R1 and R2 has the same or a different meaning.

Abstract: Dyes of formula (1) wherein Z is C10-C20terpeneamino; or N-mono- or N,N-di-C1-C16alkylamino unsubstituted or substituted in the alkyl moiety by phenyl (which may itself be substituted by carboxy, carbamoyl, sulfo or by sulfamoyl), amino, C2-C4alkanoylamino, hydroxy, sulfo, sulfato, carboxy, carbamoyl or by sulfamoyl, which further may be interrupted in the alkyl moiety by one, two or three oxygen atoms or —NH— groups, yield bluish magenta prints and dyeings having good light-fastness properties and a high colour brilliance.

Abstract: The present invention relates to a process for pigmenting a porous metal oxide by applying a solution of a soluble pigment derivative and regenerating the organic pigment by heating, whereby the organic pigment is deposited into the metal oxide's pores. The invention also relates to pigmented porous metal oxides and materials comprising a solid substrate and a surface layer of a pigmented metal oxide.

Abstract: The present invention relates to compounds of formula I provided that R1 and R2 not simultaneously stand for phenyl, the use thereof in, for example, electroluminescent devices and as void detection compounds.

Abstract: Single-material recycled thermoplastics from commercial and industrial waste can be stabilized against thermal oxidative degradation by adding a combination of a sterically hindered phenol with an organic phosphite or phosphonite and an inorganic compound from the series consisting of metal oxides, hydroxides and carbonates.