A carbon black capable of floating on a surface of a pure water when the carbon black is shaken together with the pure water at 25? C., and settling from the surface of the pure water at 50? C. or higher when the temperature of the pure water is increased stepwise from 25? C. and the carbon black is shaken together with the pure water at each temperature.

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##

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 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.

The present disclosure relates to surface-functionalized carbonaceous particles, optionally in agglomerated form, methods for making such surface-functionalized carbonaceous particles and their use, for example as conductive additives in battery electrodes. The surface-functionalized carbonaceous particles are for example obtainable by milling a non-graphitic carbon material, followed by subsequent functionalization through controlled oxidation. The surface-functionalized carbonaceous particles can be used as additive in battery electrodes. The disclosure also pertains to dispersions of such carbonaceous materials in a liquid medium and their use as, among others, conductive coatings. Polymer compounds filled with the surface-functionalized carbonaceous particles are also disclosed.

Disclosed herein are oxidized carbon blacks, which can be incorporated into electrode compositions for lead acid batteries. In some embodiments, the oxidized carbon blacks have a BET surface area ranging from 650 to 2100 m.sup.2/g; an oil absorption number (OAN) ranging from 35 to 500 mL/100 g; and a volatile content of at least 5.5 wt. % relative to the total weight of the oxidized carbon black, as determined by weight loss at 950 C.

The present disclosure relates to a novel surface-modified carbonaceous material with nanoparticles attached to the surface of said material. The carbonaceous material is for example natural or synthetic graphite, and the nanoparticles are for example in the form of plasma polymers generated in a plasma reactor. The present disclosure also relates to processes for preparing said carbonaceous material and to applications for the same, such as an active material for negative electrodes in lithium-ion batteries. It was found that the deposition of the nanoparticles on the surface of the carbonaceous material leads to significant improvements in terms of its flowability and increases the apparent and/or tap density of the resulting material.

The present disclosure is directed to compositions having lecithin and plasticizer components and related methods. The disclosed compositions may also include one or more co-surfactants such as anionic surfactants and/or non-ionic surfactants.

Disclosed herein are high structured carbon blacks, methods of synthesis and treatment, and dispersions and inkjet ink formulations prepared therefrom. The carbon black can have the following properties: OAN170 mL/100 g; and STSA ranging from 160 to 220 m.sup.2/g. The carbon black can also have the following properties: OAN170 mL/100 g; and a ratio of STSA/BET surface area ranging from 0.7 to 1.

Disclosed herein are high structured carbon blacks, methods of synthesis and treatment, and dispersions and inkjet ink formulations prepared therefrom. The carbon black can have the following properties: OAN170 mL/100 g; and STSA ranging from 160 to 220 m.sup.2/g. The carbon black can also have the following properties: OAN170 mL/100 g; and a ratio of STSA/BET surface area ranging from 0.7 to 1.