Abstract: The present invention relates to pigment mixtures containing at least two components component A being Al2O3 flakes coated with one or more metals, metal oxides and/or metal sulfides and component B being acicular or spherical colorants, and to their use in particular in varnishes, paints, printing inks, powder coating materials, plastics and cosmetic formulations.

Abstract: Carbon blacks doped with elements that are not carbon, wherein pairs of carbon atoms have been replaced by iso-electronic pairs of elements or combinations of elements. They can be used as a pigment or filler in rubber, plastics, paints, inks or the like.

Abstract: A modified particle is disclosed wherein a particle has an attached group having the formula: ##STR1## wherein Ar represents an aromatic group; R.sup.1 represents a bond, an arylene group, an alkylene group ##STR2## wherein R.sup.4 is an alkyl or alkylene group or an aryl or arylene group; R.sup.2 and R.sup.3, which can be the same or different, represent hydrogen, an alkyl group, an aryl group, --OR.sup.5, --NHR.sup.5, --NR.sup.5 R.sup.5, or --SR.sup.5, wherein R.sup.5, which is the same or different, represents an alkyl group or an aryl group; and Q represents a labile halide containing species. Also disclosed is a modified particle or aggregate having attached a group having the formula: ##STR3## wherein CoupA represents a Si-containing group, a Ti-containing group, or a Zr-containing group; R.sup.8 and R.sup.9, which can be the same or different, represent hydrogen, an alkyl group, an aryl group, --OR.sup.10, --NHR.sup.10, --NR.sup.10 R.sup.10, or --SR.sup.10, wherein R.sup.

Abstract: A modified particle is disclosed wherein a particle has an attached group having the formula: ##STR1## wherein Ar represents an aromatic group; R.sup.1 represents a bond, an arylene group, an alkylene ##STR2## wherein R.sup.4 is an alkyl or alkylene group or an aryl or arylene group; R.sup.2 and R.sup.3, which can be the same or different, represent hydrogen, an alkyl group, an aryl group, --OR.sup.5, --NHR.sup.5, --NR.sup.5 R.sup.5, or --SR.sup.5, wherein R.sup.5, which is the same or different, represents an alkyl group or an aryl group; and SFR represents a stable free radical. Also disclosed is a modified particle or aggregate having attached a group having the formula: ##STR3## wherein CoupA represents a Si-containing group, a Ti-containing group, or a Zr-containing group; R.sup.8 and R.sup.9, which can be the same or different, represent hydrogen, an alkyl group, an aryl group, --OR.sup.10, --NHR.sup.10, --NR.sup.10 R.sup.10, or --SR.sup.10, wherein R.sup.

Abstract: The invention relates to carbon-containing pigments having improved abrasion resistance and dispersibility and to their production.

Abstract: The present invention relates to a process for producing briquetted and pressed granular material and the use thereof for coloring building materials, such as concrete, and organic media, such as paint systems, plastics and colored pastes.

Abstract: Gold pigments of high opacity and processes for their preparation and use.

Abstract: Improved alumina-coated inorganic pigments having a first coating of boehmite alumina, a second coating of amorphous alumina, and a third coating of boehmite alumina which exhibit good durability, dispersibility, and optical properties in plastic compositions are disclosed. Also disclosed is a process whereby an aqueous slurry of an alumina-containing inorganic pigment is milled to achieve a particular particle size distribution, a first coating of boehmite alumina is precipitated onto the pigment material within a first pH range, a second amount of an alumina coating agent is added to the aqueous slurry within a second pH range to obtain a second coating of amorphous alumina over the first boehmite alumina coating, and then the pH of the slurry is adjusted to a third pH range thus forming a third boehmite alumina coating over the second amorphous alumina coating.

Abstract: A cathode ray tube is coated on the inner surface with a conductive coating composition using acidic plumous alumina sol, acidic chaining silica sol, and graphite powder as raw materials; and, novel cathode ray tubes of which the inner surface is coated independently with the above, or in combination with other conductive coating agents.

Abstract: Luster pigments useful for coloring paints, printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations are based on multiply coated plateletlike metallic substrates comprisingA) a first, colorless or selectively absorbing layer of metal oxide,B) a second, nonselectively absorbing layer of carbon, metal and/or metal oxide, andC) if desired a third, colorless or selectively absorbing layer of metal oxide.

Abstract: The modification of carbon particles is disclosed for achieving enhanced plating upon a non-conductive surface which has been previously treated with said modified carbon particles. The invention is particularly useful in plating through holes of printed circuit boards.

Abstract: Luster pigments based on multiply coated plateletlike silicatic substrates, obtainable by further coating substrates already coated with a first layer comprising a colorless or selectively absorbing metal oxidea) initially with a second, nonselectively absorbing layer consisting essentially of carbon, a metal or a metal oxide, andb) if desired subsequently with a third layer comprising colorless or selectively absorbing metal oxide, wherefor the carbon layer (step a) is applied by thermal decomposition of oxygen-containing hydrocarbons that for every two carbon atoms contain at least one oxygen atom, the metal layer (step a) is applied by gas phase decomposition of volatile compounds of these metals in an inert gas, and the metal oxide layer (step a and/or b) is applied by gas phase decomposition of volatile compounds of these metals in the presence of oxygen, water vapor or mixtures thereof to the substrates coated in case a) with a first metal oxide layer and in case b) additionally with a nonselectively ab

Abstract: Luster pigments based on multiply coated plateletlike metallic substrates comprisingA) a first layer consisting essentially of silicon oxide, aluminum oxide and/or aluminum oxide hydrate,B) a second layer consisting essentially of metal and/or nonselectively absorbing metal oxide, andC) if desired, a third layer consisting essentially of colorless or selectively absorbing metal oxide.

Abstract: An electrochemically active paint is disclosed which provides cathodic protection to metallic materials of construction. This paint incorporates high concentrations of conductive pigment materials in combination with both corrosion inhibiting agents and exceptionally active metal pigments that can cathodically protect the base metal to which the paint is applied even though the metal pigment particles are incorporated within the paint vehicle. Applying this paint to an engineering structure confers active cathodic protection, and the resulting painted structure is thus rendered completely immune to corrosion for the active lifetime of the paint.

Abstract: The invention relates to conductive flaky pigments for which a flaky substrate has been coated with an electrically conductive layer, characterized in that the conductive layer comprises a metal oxide pigment layer which is interspersed with carbon black particles and which has at the same time been doped with additional metal oxide particles.

Abstract: The invention is interference pigments having improved covering power and high luster based on platelet-shaped substrates which, if desired, are coated with one or more films comprising one or more metal oxides and are obtainable by adding an aqueous carbon black dispersion and a solution of one or more metal salts to an aqueous suspension of the substrate at a pH suitable for hydrolysis of a film comprising the metal oxide(s) or hydroxide(s) and containing carbon black, in which the product obtained, after being separated off and, if desired, after washing and drying, is ignited at 700.degree.-900.degree. C. in an oxygen-containing atmosphere, during which carbon oxides escape.

Abstract: The invention relates to a pigment containing carbon black having improved abrasion resistance comprising a platelet-shaped substrate coated with a metal oxide layer containing carbon black, wherein the carbon black is fixed on the substrate by means of an anionic or cationic and a nonionic surfactant and an organosilane compound.

Abstract: The invention relates to carbon-containing plate-like pigments, obtainable by pyrolysis of carbon-containing compounds in the presence of either plate-like metal oxides or metal oxide mixtures or plate-like substrates coated with titanium dioxide and at least one further metal oxide under conditions in which the metal of the metal oxide is reduced.

Abstract: The invention relates to oxidized graphite flaky particles obtainableby oxidizing graphite flaky particles in an oxygen-containing atmosphere at 200.degree.-500.degree. C.,by suspending graphite flaky particles in aqueous medium and oxidizing them with a water-soluble oxidizing agent orby oxidizing graphite flaky particles in an oxygen-containing atmosphere, suspending these oxidized particles in an aqueous medium and oxidizing them further with a water-soluble oxidizing agent, and to pigments based thereon.

Abstract: The present invention provides a black matrix composition that improves the contrast and the color purity at the same time. The black matrix composition comprising colloidal graphite as a major component, and ferric oxide (Fe.sub.2 O.sub.3), cobalt aluminate(CoOxAl.sub.2 O.sub.3), or mixture thereof, at a certain ratio as a pigment. The iron and surfactant are added as a cohesive. The above mixed pigment absorbs the red and blue light so as to improve the contrast and the color purity. The iron partial having magnetism can strengthen the cohesion so as to form the preferable deposited thickness of the black matrix composition.

Abstract: The grayish-black encapsulated pigments contain carbon black particles with specific surface areas of 10 to 1000 m.sup.2 /g (BET) encapsulated in colorless crystals of zirconium silicate. In order to produce the pigments, mixtures of zirconium oxide with a particle size distribution (D50 values) between 7 and 10 .mu.m and a spec. surface between 2 and 4 m.sup.2 /g, silicon oxide, carbon black and mineralizers are heated under reducing conditions to 900.degree. to 1400.degree. C. and calcined for 0.5 to 8 hours and recalcined under oxidizing conditions to remove the non-included carbon black. The encapsulated pigments of the invention are suitable for the pigmented coloration of glazes.

Abstract: A metallic, gold colored composition comprising an olefin polymer, a mica-based gold pigment, a mica-based bronze pigment, carbon black, and optionally, a yellow pigment is provided. Additionally, a process to produce a glossy, metallic, gold colored polyolefin product in a grit blasted mold is provided.