The present invention relates to a method for oxidizing a carbon black which can prevent or alleviate change in the surface oxidation degree of the carbon black by a residual ozone after surface oxidation reforming, and a method for preparing the carbon black by comprising it in a single continuous process.

The present invention relates to a highly crystalline carbon black and a preparation method therefor and, more specifically, to a highly crystalline carbon black and a preparation method therefor, wherein the carbon black can be used as a fuel cell catalyst carrier requiring a high level of durability and a conductive material for various batteries including secondary batteries. More specifically, the present invention provides: a highly crystalline carbon black having a crystallite size Lc of 4.0 nm or more, a specific surface area (BET) of 50-150 m2/g, and an oil absorption number (OAN) of 150 ml/100 g or more; and a preparation method therefor.

The present invention relates to a highly crystalline carbon black and a preparation method therefor and, more specifically, to a highly crystalline carbon black and a preparation method therefor, wherein the carbon black can be used as a fuel cell catalyst carrier requiring a high level of durability and a conductive material for various batteries including secondary batteries. More specifically, the present invention provides: a highly crystalline carbon black having a crystallite size Lc of 4.0 nm or more, a specific surface area (BET) of 50-150 m2/g, and an oil absorption number (OAN) of 150 ml/100 g or more; and a preparation method therefor.

The present invention relates to a filler comprising a recovered carbon black having an iodine adsorption number, measured according to ASTM D-1510-17 of between 9 g/kg and 160 g/kg, preferably between 115 g/kg and 140 g/kg. The present invention also relates to a composite material comprising a rubber and a filler according to the invention. Moreover, the present invention relates to an article comprising said composite material, wherein the article is for example a tyre, such as, a passenger car tyre, a truck tyre, an agricultural tyre, an OTR (off-the-road) tyre, an aircraft tyre, a solid tyre, a bicycle tyre or a mining tyre.

There is provided a carbon material dispersion which has excellent dispersibility and in which the dispersibility is retained stably over a long period of time even when the carbon material dispersion contains a carbon material at a high concentration. The carbon material dispersion is a carbon material dispersion containing a carbon material, water, and a polymeric dispersant, wherein the polymeric dispersant is a polymer including 5 to 40% by mass of a constituent unit (1) derived from a monomer 1, such as 2-vinylpyridine, 50 to 80% by mass of a constituent unit (2) derived from a monomer 2 represented by formula (1) (wherein R.sub.1 represents a hydrogen atom or the like, A represents O or NH, X represents an ethylene group or a propylene group, Y represents O, NHCOO, or NHCONH, each of R.sub.2 represents a hydrogen atom or the like, n represents 20 to 100, and R.sub.3 represents a hydrogen atom or the like), and 0.5 to 40% by mass of a constituent unit (3) derived from a monomer 3 copolymerizable with above-described monomers.

##STR00001##

The present invention, relates to composition of matter comprising sequence variants of Stable Protein 1 (SP1) and carbon nanotubes or carbon black, and optionally comprising latex. This invention also relates to surfaces (e.g. metal wires, cords, and polymeric and non polymeric fibers, yarns, films or fabrics, wood and nano, micro and macro particles) comprising this composition of matter, to methods for producing them, and to uses thereof in the preparation and formation of improved composite materials, including rubber, and rubber compound composites.

The present invention, relates to composition of matter comprising sequence variants of Stable Protein 1 (SP1) and carbon nanotubes or carbon black, and optionally comprising latex. This invention also relates to surfaces (e.g. metal wires, cords, and polymeric and non polymeric fibers, yarns, films or fabrics, wood and nano, micro and macro particles) comprising this composition of matter, to methods for producing them, and to uses thereof in the preparation and formation of improved composite materials, including rubber, and rubber compound composites.

Disclosed is a surface-treated carbon black in which a surface of a carbon black is treated with a compound represented by general formula (I):

##STR00001##

wherein R.sup.1 and R.sup.2 each represent a hydrogen atom, or an alkyl group, alkenyl group or alkynyl group having 1 to 20 carbon atoms, and R.sup.1 and R.sup.2 may be the same as or different from each other; and M.sup.+ represents a sodium ion, potassium ion or lithium ion. The use of this surface-treated carbon black allows to yield a vulcanized rubber low in exothermicity.

Disclosed is a surface-treated carbon black in which a surface of a carbon black is treated with a compound represented by general formula (I):

##STR00001##

wherein R.sup.1 and R.sup.2 each represent a hydrogen atom, or an alkyl group, alkenyl group or alkynyl group having 1 to 20 carbon atoms, and R.sup.1 and R.sup.2 may be the same as or different from each other; and M.sup.+ represents a sodium ion, potassium ion or lithium ion. The use of this surface-treated carbon black allows to yield a vulcanized rubber low in exothermicity.

Disclosed is a method for producing a rubber composition for tires, including: the step (step (i)) of treating a surface of a carbon black with a compound represented by general formula (I):

##STR00001##

wherein R.sup.1 and R.sup.2 each represent a hydrogen atom, or an alkyl group, alkenyl group or alkynyl group having 1 to 20 carbon atoms, and R.sup.1 and R.sup.2 may be the same as or different from each other; and M.sup.+ represents a sodium, potassium or lithium ion to yield a surface-treated carbon black; and the step (step (ii)) of kneading the resultant surface-treated carbon black, and a rubber. This method for producing a rubber composition for tires allows to yield a tire (vulcanized rubber) low in exothermicity, and give a rubber composition for tires that can be restrained from being lowered in scorch property.