In a filler for tires containing silica particles and an aggregation inhibitor inhibiting the aggregation of the silica particles, the aggregation inhibitor contains at least one kind selected from the group consisting of phosphate and derivative thereof, amino alcohol, cationic surfactant, water-soluble aminosilane, nitrogen-containing heterocyclic compound, nonionic surfactant, tertiary amine compound, polyvinyl alcohol, non-zinc soap, saturated fatty acid ester, and glycerine fatty acid ester.

Calcium silicate powders are provided. The calcium silicate powders comprise porous calcium silicate particles and an additive, the additive being at least partially penetrated into the pores of the particles. The additive is present in an amount of between 1.5 and 50% w, wherein % w is the weight ratio, expressed as percentage, of the dry weight of the additive over the dry weight of the combination of the calcium silicate particles and additive.

This invention provides metal oxide particles surface-treated with a hydrophobicity-imparting agent, methods of making such, and toner compositions comprising the same.

The present invention relates to new elastomeric materials for the production of tyres for vehicle wheels with good mechanical properties, in particular high moduli associated with low hysteresis values, including new reinforcement materials. Said reinforcement materials are obtainable by derivatising silicain-situ during the mixing of the elastomeric composition, or previouslywith special silanising agents (A) and silsesquioxanes (B), both substituted with reactive alkenyl functionalities.

A process is provided for making a silica masterbatch, that contains silica and solution-made rubber. The silica masterbatch has physical properties similar to those found in a comparable dry-mixed composition, but the silica masterbatch can be incorporated more easily and less expensively into tires and other rubber products than the dry-mixed composition. A process is also provided for making a masterbatch of silica, a solution-made rubber and an emulsion-made rubber.

An inorganic particle/siloxane composite which comprises a product of cohydrolysis and cocondensation of (A) at least one compound or product selected from among silicon compounds represented by general formulae (1) to (4) and products of partial hydrolysis and condensation thereof and (B) inorganic particles which, when examined by the dynamic light scattering method, give a volume-based particle diameter distribution that has a 50%-cumulation particle diameter (D.sub.50) of 3-100 nm, wherein the number of silicon atoms derived from the silicon compound represented by general formula (2) is 20 mol % or more of the number of all the silicon atoms in the component (A). The component (B) is contained in an amount of 65 mass % or less with respect to the whole product of cohydrolysis and cocondensation. The inorganic particle/siloxane composite has satisfactory compatibility with silicone materials although containing substantially no volatile organic solvent.

Si(OR.sup.1).sub.4(1)

R.sup.2Si(OR.sup.1).sub.3(2)

R.sup.3R.sup.4Si(OR.sup.1).sub.2(3)

R.sup.5R.sup.6R.sup.7SiOR.sup.1(4)

(In the formulae, R.sup.1 represents a C.sub.1-20 alkyl group, etc. and R.sup.2 to R.sup.7 each represent a C.sub.1-20 alkyl group, etc.)

This disclosure relates to polymer coatings with desirable anti-fouling properties. In certain embodiments, polymers are coated on particles which allow for conjugation with targeting moieties. In certain embodiments, the particles are nanoparticles with targeting moieties that bind with tumor associated antigens.

A reaction vessel and method for producing functionalised Silica using a mixing chamber for mixing a silane and an oxide such as carbon dioxide provided using a delivery system to mix the gases so that they react to form functionalised Silica and other products such as Hydrogen and Carbon or other oxides.

The disclosure relates to the technical field of inorganic filler and superhydrophobic coating, and in particular, to an inorganic filler dispersion, a superhydrophobic insulating and wear-resistant coating and preparation methods thereof. The inorganic filler dispersion is formed by a primary modification of the micro-nano-meter sized inorganic filler composed of a mixture of a nanometer sized inorganic filler and a submicron-meter sized inorganic filler with a hydrophobic silane coupling agent, and a secondary modification of the primary modified micro-nano-meter sized inorganic filler in an organic solvent with a hydrophobic hydroxy-terminated blocking agent and a catalyst. The inorganic filler dispersion and the hydroxyl-terminated polydimethylsiloxane and other components are ground to obtain a pre-coating mixture, which can be used as reinforcing component and mixed evenly with the latent curing agent and the solvent to obtain a one-component superhydrophobic insulating and wear-resistant coating.

A pretreated silica material includes silica particles, an organosilane coupling agent bonded to the silica particles, and polyethylene glycol contacting the silica particles. The pretreated silica material may be used in a rubber composition which also includes one or more vulcanizable elastomers and a curing agent. A tire tread or other part of a tire may be formed from the rubber composition.