Abstract: Compositions comprisinga) an organic material of high molecular weight in the form of a paint or varnish or of a printing ink,b) a pigment composition comprising an organic pigment whose particle surface is provided with a tenacious coating of alkyl silicate, said coating being fixed by adsorption of an alkyl silicate on a layer that coats the surface of the pigment particles and consists essentially of partially hydrolyzed organic compounds of elements of group 4A or 4B of the Periodic System selected from the group consisting of chelates of formula ##STR1## wherein R.sub.1 is methyl, ethyl, methoxy or ethoxy, R.sub.2 is methyl or ethyl and R.sub.3 is halogen or C.sub.1 -C.sub.4 alkoxy, and M is Ti or Sn, and of esters of formulaM.sub.1 (OR.sub.4).sub.4 (III),wherein M.sub.1 is an element of group 4A or 4B of the Periodic System and R.sub.4 is C.sub.1 -C.sub.4 alkyl, which alkyl silicate is hydrolyzed before, during or after adsorption.

Abstract: Disclosed is a novel ultraviolet-shielding agent in a powder form consisting of particles of an inorganic material having a specified refractive index and a flaky particle configuration, such as mica, talc, sericite and the like, compositely coated with a water-insoluble cerium compound and amorphous silica each in a specified coating amount. A method for the preparation of such an ultraviolet-shielding agent is disclosed. By virtue of the excellent ultraviolet-shielding effect along with good translucency as well as stability and safety against human skin, it is useful as an ultraviolet-shielding ingredient in cosmetic compositions.

Abstract: Metal pigment particles treated with an organic phosphate or a pentavalent vanadium compound and a nitro-containing compound show increased stability against attack by water. The particles are especially useful in aqueous coating compositions. The nitro-containing compound also may be included in the vehicle of the coating composition separately from the paste of metal pigment particles.

Abstract: A process for preparing transparent yellow iron oxide pigments by the precipitation of iron (II) hydroxide by adding an inorganic base to an iron (II) salt solution and subsequent oxidation to FeOOH.

Abstract: Improved corrosion preventive pigment grade zinc cyanamide suitable for protective coatings is prepared by providing a hydrated slurry of finely divided, dispersed basic zinc carbonate, mixing with said slurry a stabilized soluble aqueous solution of hydrogen cyanamide to form zinc cyanamide having a crystalline structure characterized by the presence of an intense IR absorption spectral band at 2200 cm.sup.-1 and the substantial absence of component bands at 2050 cm.sup.-1 and 700 cm.sup.-1.

Abstract: This invention relates to structural aggregate pigment products that are cationic, and have improved wet-end retention. A method for converting anionic pigments to cationic pigments is also provided. More particularly, a structural aggregate pigment comprising a clay and/or titanium dioxide or other particulate components, and a functional microgel made from silicon and aluminum or zinc gel formers and a gelling agent such as calcium chloride, can be cationized by adding an effective amount of modified or unmodified epichlorhydrin dimethylamine condensate to a slurry of the structured pigment. The resulting cationic pigments have superior papermaking characteristics and a much improved retention.

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 concerns an anti-corrosive pigmentary composition characterized in that contains zinc 8-hydroxy-quinolate.

Abstract: There is disclosed an electrically conductive pigment containing 20 to 95% by weight of a component A comprising one or more conductive platelet-like pigments and 5 to 80% by weight of a component B comprising one or more conductive needle-shaped or fibrous pigments.

Abstract: Soluble salt-free, contaminant-free antioxidant pigments which are cyanamide derivatives of metals, are provided in combination with organic resin polymers, as protective mirror backing coatings.

Abstract: Metal pigment particles which are treated with a heteropoly anion compound show increased stability against attack by water. The particles are especially useful in aqueous coating compositions.

Abstract: A method of improving the storage stability of a coloured organic pigment in powder form which comprises coating pigment particles with a solid polymer which is a polar group-containing vinyl polymer, said polar group being a hydroxy, carboxyl, carboxylic ester, anhydride or carboxamide group, or a cellulosic polymer, thereby inhibiting reduction of tinting strength of the pigment on storage.

Abstract: A novel basic composite metal sulfate fiber, a process for the production thereof, and a resin and/or rubber composition which contains the basic composite metal sulfate fiber and gives a molded article which is improved in mechanical strength and/or flame retardancy and having an excellent appearance. The basic composite metal sulfate fiber has the formula (1),(Mg.sub.1-x M.sup.2+.sub.x).sub.6 (OH).sub.12-2y (SO.sub.4.sup.2-).sub.y.mH.sub.2 O (1)wherein M is at least one metal selected from the group consisting of Mn, Fe, Co, Ni, Cu and Zn, and x, y and m are respectively defined by 0.005<x<0.5, 0.8<y<1.2 and 0<m<4.

Abstract: Brown spinel pigments based on zinc chromite which are iron-free and exhibit an atomic ratio of chromium to zinc in a range of 1 to greater than 0.5 up to 2 are disclosed. Preferred pigments additionally contain manganese, in which instance the atomic ratio of Mn to Cr is a maximum of 0.2. The production of the pigments involves a firing process of a powder mixture consisting of the oxides the metals, or precursors thereof, contained in the pigment. Instead of previously known grayish-brown unattractive products, attractive brown pigments are obtained by means of the selected molar ratio and a baking temperature above 1200.degree. C. The novel pigments can be used in the presence of glass frits even at firing temperatures above 1200.degree. C. to 1500.degree. C. and are suitable for a common firing of ceramic carrier and decoration.

Abstract: Metal pigment particles treated with an organic phosphate, phosphite or a pentavalent vanadium compound and a nitro-containing compound show increased stability against attack by water. The particles are especially useful in aqueous coating compositions.

Abstract: Metal oxide-doped zinc oxide pigments are produced by processing an oxide, carbonate, hydroxide of hydroxycarbonate of zinc in the presence of water and an oxide, carbonate, hydroxide, hydroxy-carbonate, oxalate or formate of the doping metal into a paste using formic acid or oxalic acid in an amount which is at least sufficient for converting the oxides, carbonates, hydroxides or hydroxycarbonates mentioned into formates or oxalates, drying, grinding and calcining at from 700.degree. to 1100.degree. C. in an inert gas atmosphere.

Abstract: Zinc powder, which contains a coloring element, e.g., Ti, Mn, or V, is heated to a temperature of from 350.degree. to 700.degree. C. so as to oxidize the surface of the powder and hence to develop such colors as brown, navy blue, blue, greenish-brown, green, and coffee brown. The colored zinc powder is sprayed onto a steel, aluminum, or ceramic article to produce a colored article. The colored zinc powder is also used as a pigment.

Abstract: This invention relates to a two-component, low VOC pretreatment primer comprising:a) an aqueous first component comprising1) a resin,2) a zinc chromate pigment,3) a zinc phosphate pigment, and4) a package stabilizing agent; andb) an aqueous second component comprising a catalyst soution for said first component.

Abstract: Disclosed are pigment composite particles which are superior in water resistance, weather resistance, thermal stability and hardness. The pigment composite particles are prepared by suspension-polymerizing an aqueous suspension comprising(a) a pigment paste comprising pigment and a pigment grinding resin having a hydrophilic group of at least 0.2 mmol/g,(b) a polymerizable monomer and(c) a polymerization initiator.

Abstract: An improved process for the preparation of bismuth vanadate pigments and solid solutions based on bismuth vanadate by a) mixing a solution of a bismuth (III) salt containing, if required, one or more further metal salts or a mixture thereof with the aqueous solution of a vanadate salt containing, if required, a molybdate, tungstate or sulfate salt or a mixture thereof and b) subjecting the suspension thus obtained to a subsequent aftertreatment to convert the particles first precipitated in amorphous form into crystalline compounds, wherein during the mixing and/or during the subsequent aftertreatment step fluoride ions are used.

Abstract: Improved corrosion preventive pigment grade zinc cyanamide suitable for protective mirror backing coating is prepared by reacting a totally hydrated zinc oxide slurry with hydrogen cyanamide. The reaction is carried out while maintaining a stoichiometric excess of zinc oxide at an elevated temperature between about 75.degree. C. and about 85.degree. C. The reaction mixture is provided in a condition free of inorganic soluble salts and free of anions containing sulfur such as sulfides or sulfates.

Abstract: A pigment consisting of a polyvalent metal salt of an amidosulfonic acid represented by the following general formula (I): ##STR1## wherein R.sup.1 represents a straight-chain or branched alkyl, alkenyl or hydroxyalkyl group each having 7 to 21 carbon atoms;R.sup.2 represents a hydrogen atom or a methyl group;X represents an ethylene group, a propylene group or a ##STR2## M represents a polyvalent metal atom; m represents the valence of M: andn is an integer of from 1 to 4; anda pigment consisting of a polyvalent metal salt of an acylated amino acid represented by the following general formula (II): ##STR3## wherein R.sup.1 represents a straight-chain or branched alkyl, alkenyl or hydroxyalkyl group each having 7 to 21 carbon atoms;y represents a number selected from among 1, 2, 3, 4, 5, 10, and 11;M represents a polyvalent metal atom;m represents the valence of M: andn is an integer of from 1 to 4;as well as cosmetic compositions containing these pigments are disclosed.

Abstract: Bismuth oxychloride nacreous pigment coated with a rare earth metal compound is described. The coated pigment is prepared by adding a rare earth metal salt solution to a suspension of bismuth oxychloride pigment crystals to form a further suspension containing the pigment crystals and cerium hydroxide. The cerium hydroxide is then precipitated out of the further suspension to coat the pigment crystals. The coated pigment is endowed with improved weather fastness.

Abstract: A needle-like monoammine complex of zinc carbonate containing or not containing aluminum useful as a filler or a precursor of needle-like electroconductive zinc oxide, and a process for producing it which comprises steps of dissolving a zinc compound in a solution containing ammonium ion and carbonate ion in the presence or absence of aluminum compound and then lowering pH of the solution to precipitate zinc carbonate.

Abstract: A process for stabilizing bismuth vanadate pigments against attack by hydrochloric acid by treating said pigments with a metal phosphate, which process comprises treating an aqueous suspension of a bismuth vanadate pigment with 2-20% by weight, based on said pigment, of an orthophosphate selected from the group consisting of calcium, magnesium, aluminium, zirconium and titanium orthophosphate, of a mixture of such orthophosphates with one another or of such orthophosphates with zinc orthophosphate, with stirring, in the temperature range from 20.degree. to 100.degree. C. and in the pH range from 2 to 8, which orthophosphate is precipitated in situ from the appropriate metal salt of a strong mineral acid and orthophosphoric acid or from an alkali metal salt thereof, and isolating the resultant product by conventional methods.The pigments so obtained have excellent resistance to hydrochloric acid.

Abstract: Process for manufacturing of structural aggregate pigment products with intrinsically built-in functional properties, from aqueous dispersions of particulate matter treated with in-situ formed complex functional microgels with rapid formation kinetics.

Abstract: The pigment comprises a mixture of crystalline phase and an amorphous phase in which the crystalline phase represents from 10 to 70 wt % of the mixture and is constituted by zinc phosphate in the form of substantially spheroidal particles having a maximum size of between 0.5 to 5 microns and the amorphous phase represents from 30 to 90 wt % and comprises ferric phosphate and ferrous phosphate in a mole ratio lying between 1:001 and 1:03.The process comprises a reaction giving ferrous phosphate, partial oxidation thereof and association with zinc phosphate.

Abstract: Thermostable pigments for coloring stoving lacquers, coil coat lacquers, plastics, sand granulates, lime sandstone, enamel or ceramic glazes are zinc ferrite color pigments containing from 0.01 to 0.5% by weight of lithium.

Abstract: A pigment dispersion of enhanced viscosity and heat stability characteristics for use in coating systems is provided. The pigment dispersions generally comprise a pigment carrier, a pigment of the type having a hydrophilic surface, and a surfactant functional as a dispersant in a relatively non polar matrix and which is present on the surface of the pigment in an effective amount. Pigment carriers include water-based carriers and organic solvent-based carriers. Finished coatings having improved viscosity and heat stability are also provided. The finished coatings comprise a coating base and the surfactant treated pigments. Such pigments include iron oxide pigments yellow iron oxide pigment, black iron oxide pigment, divalent ferrite pigments, zinc ferrite pigment, and magnesium ferrite pigment. Such surfactants include trimethylol propane, and trimethylol ethane.

Abstract: Disclosed is a filler for ink jet recording paper, said filler being composed of amorphous silica particles having a median diameter, measured by the coulter counter method, of 2 to 15 .mu.m, an oil absorption of at least 180 ml/100 g, a refractive index, measured by the solvent method, of at least 1.450, and a moisture absorption, measured when it is caused to absorb moisture for 200 hours at a relative humidity of 90% and a temperature of 25.degree. C., of at least 35%, and a coating of a compound of a metal of Group II of the periodic table on the surface of the silica particles in an amount of 0.5 to 20% by weight.

Abstract: A rust-proofing agent containing as an active ingredient an oxide solid solution represented by formula (1)[(Zn).sub.1-y (Mg).sub.y ].sub.1-x Al.sub.x O.sub.1+x/2 (1)wherein x denotes a positive number satisfying 0.1<x<0.6 and y denotes a positive number satisying 0<y<1, a rust-proofing coating composition containing said rust-proofing agent and a coating method for preventing or inhibiting corrosion of a metallic surface.

Abstract: A pigment composition, particularly adapted for the coloring of plastics materials, consisting of pigments comprising lead chromate, lead sulfochromate, lead molyb-do-sulfochromate, zinc chromate or strontium chromate and being covered by a film formed by an ester of an aromatic or aliphatic tricarboxylic acid and an aliphatic alcohol; the composition is remarkably stable at high temperature and improves the viscosity conditions of the semi-molten mass formed by the composition plus the polymer to be colored.

Abstract: A water-insoluble pigment comprising a complex of an anion exchange material with a layered crystal structure and a water-soluble dye is disclosed. The anion exchange material may be represented by the general formula:[M.sub.x.sup.+1 Q.sub.y.sup.+2.Al(OH).sub.3 ](A.sup.-1).sub.d (A.sup.-2).sub.e (A.sup.-3).sub.f (A.sup.-4).sub.g.nH.sub.2 Owhere M is a metal element or elements each with a positive valence of 1; Q is a metal element or elements each with a positive valence of 2; A.sup.-1, A.sup.-2, A.sup.-3, and A.sup.-4 are each one or more exchangeable anions each having a negative valence of 1, 2, 3, and 4 respectively; and n, x, y, d, e, f, and g are real numbers greater than or equal to zero and satisfy the following:0<x+2y.ltoreq.1d+2e+3f+4g=x+2y0.ltoreq.n.ltoreq.