A process for producing surface modified carbon black is disclosed. The process comprises the step of treating carbon black with a sulfur compound in an amount in the range of 0.005%-1% of the carbon black to effect in situ formation of surface groups to produce the surface modified carbon black which when combined with a polymer composition alters the carbon black-polymer interaction to decrease the hysteresis of the polymer composition. The curing time required for polymer composition comprising the surface modified carbon black is also decreased. The preferred sulfur compounds are sulfite or sulfate salts.

This invention relates to particles comprising a pigment core particle encapsulated by a polymer, a process for their preparation, electrophoretic fluids comprising such particles, and electrophoretic display devices comprising such fluids.

This invention relates to particles comprising a pigment core particle encapsulated by a polymer, a process for their preparation, electrophoretic fluids comprising such particles, and electrophoretic display devices comprising such fluids.

Disclosed herein inkjet ink compositions comprising: (a) a carbon black having the following properties: OAN170 mL/100 g; and STSA ranging from 160 to 220 m.sup.2/g; (b) at least one polymeric dispersant selected from polyoxyethylene/polyoxypropylene block copolymers, styrene-acrylic resins, styrene-methacrylic resins, styrene-maleic acid copolymers, and styrene-maleic anhydride copolymers; (c) at least one surfactant selected from ethoxylated siloxanes, succinic acid esters, and succinic acid salts; and (d) at least one polyurethane.

This invention relates to a tire with a tread of rubber composition with reinforcing filler containing oxidized rubber reinforcing carbon black together with tris (2-ethyl hexyl) phosphate. In one embodiment, the invention relates to a truck tire intended for heavy duty performance with a tread rubber composition comprised of natural cis 1,4-polyisoprene rubber containing reinforcing filler comprised of oxidized rubber reinforcing carbon black together with tris (2-ethyl hexyl) phosphate.

Carbon black-containing composite particles of the present invention each include a silicon oxide and carbon black particles dispersed inside the silicon oxide. When a coating film containing the carbon black-containing composite particles dispersed in a transparent matrix, having a concentration of the carbon black particles of 1 mass %, and having a thickness of 25 m to 40 m is formed on a hiding-chart specified in JIS (Japanese Industrial Standards) K 5600-4-1: 1999, a difference L.sub.W*L.sub.B* obtained by subtracting lightness L.sub.B* of the coating film formed on a black part of the hiding-chart from lightness L.sub.W* of the coating film formed on a white part of the hiding-chart is 30 or less. Thus carbon black-containing composite particles advantageous in exhibiting a good hiding property and reducing an undertone can be provided.

The invention is directed to processes for increasing the surface area of a carbon black starting material and for forming mesoporous carbon black. The process includes the step of contacting a carbon black starting material having a first BET nitrogen surface area with an oxidant in a fluidized bed under conditions effective to form a carbon black product having a second BET nitrogen surface area greater than the first BET nitrogen surface area. The invention is also directed to carbon black product formed by this process.

The present invention relates to a particulate carbon material that can be produced from renewable raw materials, in particular from biomass containing lignin, comprising: a MC content that corresponds to that of the renewable raw materials, said content being preferably greater than 0.20 Bq/g carbon, especially preferably greater than 0.23 Bq/g carbon, but preferably less than 0.45 Bq/g carbon in each case; a carbon content in relation to the ash-free dry substance of between 60 ma. % and 80 ma. %; an STSA surface area of the primary particles of at least 5 m.sup.2/g and at most 200 m.sup.2/g; and an oil absorption value (OAN) of between 50 ml/100 g and 150 ml/100 g. The present invention also relates to a method for producing said carbon material and to the use thereof.

The present invention relates to a particulate carbon material that can be produced from renewable raw materials, in particular from biomass containing lignin, comprising: a MC content that corresponds to that of the renewable raw materials, said content being preferably greater than 0.20 Bq/g carbon, especially preferably greater than 0.23 Bq/g carbon, but preferably less than 0.45 Bq/g carbon in each case; a carbon content in relation to the ash-free dry substance of between 60 ma. % and 80 ma. %; an STSA surface area of the primary particles of at least 5 m.sup.2/g and at most 200 m.sup.2/g; and an oil absorption value (OAN) of between 50 ml/100 g and 150 ml/100 g. The present invention also relates to a method for producing said carbon material and to the use thereof.

A method for forming a copper coated particles includes combining a precipitating agent with a solution comprising copper nitrate and particles to forming coated particles. The particles are cobalt oxide (Co.sub.3O.sub.4) or carbon black. The coated particles are washed to obtain washed coated particles, the washed coated particles are filtered to obtain filtered coated particles, the filtered coated particles are dried to obtain dried coated particles, and the dried coated particles are calcined to obtain the copper coated particles. The copper coated particles have a reflectivity of electromagnetic radiation in a visible spectrum that is less than or equal to 5%, and a reflectivity of electromagnetic radiation in a near-IR and LiDAR spectrum that is greater than or equal to 5%.