The invention relates to a pigment particle for security applications, comprising a duromer matrix and a plurality of core particles of a thermoplastic polymer with a feature substance dissolved in the core particles embedded therein, wherein the feature substance is an organic or metalorganic substance. The invention further relates to a method for producing security pigments, for example luminescent printing pigments, by means of incorporation into a duromer matrix of thermoplastic polymer particles in which the luminescent illuminant is present respectively in dissolved form.

Subject matter are aqueous, low-VOC/SVOC universal pigment preparations comprising a pigment component; a water-soluble, nonionic, surface-active additive comprising a copolymer formed from a vinyl monomer and from an ethylenically unsaturated monomer selected from the group consisting of monocarboxylic esters, dicarboxylic esters, monocarboxamides, and dicarboxamides, the vinyl monomer and/or the ethylenically unsaturated monomer containing an N-containing group with pigment affinity; 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.

The novel yellow metal azo pigments based on at least two metal azo compounds which differ at least in the type of metal have both improved dispersion properties and improved color strengths and are of excellent suitability for pigmentation of pigment preparations for a broad field of use.

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.

Provided are an aqueous pigment dispersion that includes an azo pigment represented by Formula (1) as described in the specification, and/or a tautomer thereof, the azo pigment showing characteristic X-ray diffraction peaks at least at Bragg's angles (20.2) of 4.8, 7.2, 9.7, 20.0, 17.3, 26.0, and 26.7 in CuK characteristic X-ray diffraction; a first dispersant; a second dispersant; and water, the aqueous pigment dispersion being obtained via the following Step b.

Step b: a step of dispersing an azo pigment represented by Formula (1) and/or a tautomer thereof, a first dispersant, and a second dispersant in water and thereby obtaining an aqueous pigment dispersion.

The novel yellow metal azo pigments based on at least three metal azo compounds which differ at least in the type of metal have improved color strengths and are of excellent suitability for pigmentation of pigment preparations for a broad field of use.

The novel yellow metal azo pigments based on at least three metal azo compounds, which differ at least in the type of metal, have improved color strengths and are of excellent suitability for pigmentation of pigment preparations for a broad field of use.

The novel yellow metal azo pigments based on at least three metal azo compounds which differ at least in the type of metal have improved color strengths and are of excellent suitability for pigmentation of pigment preparations for a broad field of use.

The novel yellow metal azo pigments based on at least two metal azo compounds which differ a least in the type of metal have improved color strengths and are of excellent suitability for pigmentation of pigment preparations for a broad field of use.