A nanospike hybrid carbon black product includes a plurality of carbon black aggregates. Each of the carbon black aggregates has a surface with a plurality of carbon nanospike formed thereon. The carbon nanospikes may each have a length between about 5 nm and 100 nm, and a width between about 5 nm and about 50 nm. A method for manufacturing the nanospike hybrid carbon black product includes the steps of injecting a primary carbon feedstock into a carbon black reactor, and combusting the carbon feedstock under a predetermined high temperature in the carbon black reactor to form carbon black aggregates. A catalyst is then deposited on surfaces of the carbon black aggregates. A secondary carbon feedstock is injected into the carbon black reactor, and reacted with the catalyst to grow carbon nanospikes on the surfaces of the carbon black aggregates.

A nanospike hybrid carbon black product includes a plurality of carbon black aggregates. Each of the carbon black aggregates has a surface with a plurality of carbon nanospike formed thereon. The carbon nanospikes may each have a length between about 5 nm and 100 nm, and a width between about 5 nm and about 50 nm. A method for manufacturing the nanospike hybrid carbon black product includes the steps of injecting a primary carbon feedstock into a carbon black reactor, and combusting the carbon feedstock under a predetermined high temperature in the carbon black reactor to form carbon black aggregates. A catalyst is then deposited on surfaces of the carbon black aggregates. A secondary carbon feedstock is injected into the carbon black reactor, and reacted with the catalyst to grow carbon nanospikes on the surfaces of the carbon black aggregates.

A method for manufacturing an aqueous black pigment dispersion, including the steps of subjecting a mixture containing carbon black and an aqueous medium to media-less dispersion and adding a resin having anionic groups and a basic compound after the dispersion, wherein the carbon black has a carboxylic acid group on the surface such that the value produced by dividing the amount of carboxylic acid group present on the surface by BET value is 0.8 to 5.5 (mol/m.sup.2) and the resin having anionic groups is an urethane resin that satisfies (weight average molecular weight/acid value)<1,400 or a styrene acrylic resin that satisfies (weight average molecular weight/acid value)<120.

A method for manufacturing an aqueous black pigment dispersion, including the steps of subjecting a mixture containing carbon black and an aqueous medium to media-less dispersion and adding a resin having anionic groups and a basic compound after the dispersion, wherein the carbon black has a carboxylic acid group on the surface such that the value produced by dividing the amount of carboxylic acid group present on the surface by BET value is 0.8 to 5.5 (mol/m.sup.2) and the resin having anionic groups is an urethane resin that satisfies (weight average molecular weight/acid value)<1,400 or a styrene acrylic resin that satisfies (weight average molecular weight/acid value)<120.

A method for producing modified recycled carbon black, the method including a main burner modification step of continuously supplying a main burner fuel, an oxygen-containing gas, and raw material recycled carbon black to a main burner combusting a fuel and generating a flame to perform combustion of the main burner fuel and while continuously generating a flame by the main burner, introducing the raw material recycled carbon black to the flame and passing the raw material recycled carbon black through the flame, and making a main burner total carbon combustion rate represented by Expression (1) below: Main burner total carbon combustion rate (%)=(A/(B+C))100 (1) less than 100.0%. The present invention can provide a method for producing modified recycled carbon black that can remove rubber residuals adhering to the surface of raw material recycled carbon black effectively and continuously.

The present invention relates to a process for the production of oxidized wet beaded carbon black. It has been found that carbon black can be wet beaded and oxidized subsequently. This process allows a better control of the degree of oxidation without damaging the beads. Moreover, the oxidized wet beaded carbon black can be beneficially used in a rubber composition to increase the properties of the resulting rubber product.

The present invention relates to a screw conveyor configured to produce oxidized wet beaded carbon black including a reaction chamber and at least one ozone inlet to supply ozone to the reaction chamber. It has been found that the destruction of carbon black beads can be reduced using a screw conveyor for the oxidization. Additionally, the oxidation of the wet beaded carbon black could be improved.

The present invention relates to a process for the processing and/or purification of carbon black comprising the steps of: a) providing carbon black containing impurities b) providing an aqueous fluid comprising a nitrogen hydride c) providing an alkali metal hydroxide and/or an alkali metal d) contacting the mixture of step a), the fluid of step b) and the alkali metal hydroxide and/or alkali metal of step c) e) subjecting the composition obtained in step d) to an elevated temperature in the range of 80 to 240 C. and an elevated pressure in the range of 5 to 50 bar f) separating a carbonaceous solid from the composition obtained in step e). The present invention further relates to the use of a nitrogen hydride as a dispersing agent for producing and/or stabilizing an aqueous suspension.

The present invention relates to a process for the processing and/or purification of carbon black comprising the steps of: a) providing carbon black containing impurities b) providing an aqueous fluid comprising a nitrogen hydride c) providing an alkali metal hydroxide and/or an alkali metal d) contacting the mixture of step a), the fluid of step b) and the alkali metal hydroxide and/or alkali metal of step c) e) subjecting the composition obtained in step d) to an elevated temperature in the range of 80 to 240 C. and an elevated pressure in the range of 5 to 50 bar f) separating a carbonaceous solid from the composition obtained in step e). The present invention further relates to the use of a nitrogen hydride as a dispersing agent for producing and/or stabilizing an aqueous suspension.

A composition of a surface modified non-oxidized non-low hysteresis carbon blacks is disclosed. Chemical modification of low hysteresis carbon black has been demonstrated in earlier work. All of the work is constrained by the selection of specific grades of carbon black and the applicability of the technology has not been fully explored. The surface of non-low hysteresis carbon blacks including the ASTM defined carbon blacks modified with a compound comprising at least one amine group and at least one thiol group, and/or di- and/or polysulfidic linkage. This work further demonstrates the applicability of the technology to additional carbon black grades and by inference, to all grades of carbon black used in tire and industrial rubber products. Benefits are lower hysteresis with no loss in abrasion resistance.