A process for the preparation of composite filler particles, comprising: (a) coating a particulate filler having a median particle size (D50) of from 1 to 1200 nm; (b) agglomerating the coated particulate filler, for providing a granulation of the coated particulate filler wherein the granulation contains the coated particulate filler particles whereby the at least one coating layer may be crosslinked by crosslinking groups obtained by reacting the reactive groups and optionally a further crosslinking agent.

Biocidal roofing granules are prepared by providing a mineral core and at least one biocidal photocatalytic metal oxide. A gel-forming inorganic coating medium is prepared and used to coat the mineral core to form a coating layer having a porous network on the mineral core, and the at least one biocidal photocatalytic metal oxide is disposed in the porous network.

The present disclosure provides an example where a white ink can include an aqueous ink vehicle and from 5 wt % to 60 wt % of a white flocculated colorant mass. The white flocculated colorant mass can include white metal oxide pigment, an alumina coating, and polymeric dispersant associated with a surface of the alumina-coated pigment. The white metal oxide pigment can have an average particulate size from 100 nm to 2,000 nm. The alumina coating on the white metal oxide pigment can form an alumina-coated pigment where the alumina coating is predominantly alumina, and the white metal oxide pigment content to alumina content can be from 99:1 to 9:1 by weight.

The present invention aims to provide a method of producing a fine particulate inorganic oxide dispersion, which makes it possible to easily disperse a fine particulate inorganic oxide while reducing the amount of dispersant used. The present invention relates to a method of producing a fine particulate inorganic oxide dispersion, the method including mixing the following components (A) to (D): (A) at least one fine particulate inorganic oxide selected from the group consisting of zirconium oxide (ZrO.sub.2), titanium oxide (TiO.sub.2), and barium titanate (BaTiO.sub.3), (B) a dispersant, (C) an alkoxysilane compound, and (D) a solvent having the following Hansen solubility parameters: a hydrogen bonding component (dH) of 11 or less and a polar component (dP) of 4 or more; and wet grinding the resulting mixture.

The subject of the invention is a method for the production of pigment from filtration sludges containing manganese and iron and phosphates, characterised in that the filter sludge is sieved on a vibrating sieve, then the suspension is concentrated and dried to a water content below 8% w/w, after which the material is subjected to thermal treatment at a temperature in the range of 500-1200? C. for a period of 6-12 hours, and the obtained sinter is fragmented and optionally dried to a moisture level of 5%. The invention also relates to using the pigment produced by the foregoing method colouring construction ceramic products or as a colouring additive to the mass from which construction products are formed or as a colouring additive for concrete.

A method for producing a submicron-/nano-jute carbon/epoxy composite anti-corrosion coating is described. The method includes heating a jute stick, grinding the jute stick to form a first powder; pyrolyzing the first powder to form a pyrolyzed carbon; grinding the pyrolyzed carbon to form a second powder; ball milling the second powder under the wet conditions to form a submicron-/nano-jutecarbon; mixing the submicron-/nano-jutecarbon, and an epoxy resin to form a first mixture; mixing a hardener with the first mixture to form a second mixture, and coating the second mixture on a mild steel substrate and curing to form the submicron-/nano-jutecarbon/epoxy composite anti-corrosion coating.

A method for producing a granulated metal oxide powder and corresponding granulated metal oxide powder includes obtaining an initial metal oxide powder, consisting of particles of a metal oxide, by hydrolysing a chloride of the metal and forming a suspension containing the initial metal oxide powder and an organic binder suspended in a suspension medium. The method also includes drying the suspension so as to obtain granulated metal oxide powder, consisting of grains formed by agglomerates of particles of the initial metal oxide powder.

A biogenic black pigment with a .sup.14C content of more than 0.20 Bq/g carbon and less than 0.45 Bq/g carbon, a mass fraction of volatile constituents, as determined according to DIN 51720, relative to the dry mass of the pigment, of 20% by mass to 40% by mass, a mass fraction of carbon, as determined according to DIN 51732, relative to the dry mass of the pigment, of 60% by mass to 95% by mass, an ash content, relative to the dry mass of the pigment, of 0.5% by mass to 7% by mass, a mass fraction of polycyclic aromatic hydrocarbons (PAHs), relative to the dry mass of the pigment, of <10 ppm, a mass fraction of lead, mercury, cadmium and chrome of <100 ppm in total, relative to the dry mass of the pigment, an STSA surface area of 5 m.sup.2/g to 200 m.sup.2/g, and a d99 value of the Q.sub.3 cumulative curve distribution of the particle size of 100 m, a process for producing biogenic black pigment, a use of the biogenic black pigment for achromatic coloring and color shading of plastics, plastic parts, coating materials, printing inks, inks, paints, papers, cardboards, cartons, and mineral materials, and as a reinforcing filler for rubber-like, thermoplastic, liquid crystalline, and magnetorheological elastomers; as well as materials and articles that contain the biogenic black pigments.

A method for the preparation of a particulate filler with slight dust formation suitable for use in composite materials, wherein the mean particle size of the filler measured by air jet sieving and/or Sedigraph is 300 m and is characterised by the following steps: Providing carrier particles which have an average particle size measured by air jet sieving and/or Sedigraph 300 m, providing a silane, siloxane and/or silicone, providing a paraffin oil, preparing a liquid coating compound by mixing the silane, siloxane and/or silicone with the paraffin oil and optionally further components, coating the carrier particles with the coating compound in a mixing device. The invention also relates to a particulate filler with slight dust formation and the use of such a particulate filler as a filler in a casting slip and/or a composite material, i.e. also a composite material comprising a binder and such a filler.

Provided is a metal-dioxide nanofiller including at least two graft chains, at least one of the chains being a hydrophilic and the other being a hydrophobic chain compatible with fluorinated polymers. The hydrophobic chain is an oligomer, the weight-average molar mass Mw of which is between 300 and 20, 000 g/mol-1 .Math. Also provided is a non-stick coating comprising such a filler, as well as to a culinary article provided with such a coating.