Abstract: Aqueous carbon black dispersions contain carbon black and cationic surfactants in addition to water. The aqueous carbon black dispersions are produced by dispersing the carbon black and other components in water with bead mills, ultrasonic mills or an Ultra Turrax mixer. The dispersions can be used to produce inks, lacquers and printing inks.

Abstract: Aqueous carbon black dispersions contain carbon black and surfactants, in addition to water. The dispersions are produced by dispersing the carbon black and the other constituents in water, using bead mills, ultrasonic mills and/or an ultra-turrax. The aqueous carbon black dispersions can be used to produce printing inks such as ink-jet inks or writing inks.

Abstract: Carbon blacks containing silicon and a process for manufacturing them. The carbon blacks containing silicon are suitable as reinforcing carbon blacks for rubber mixtures and give the latter viscoelastic properties such as reduced rolling resistance in tires. At the same time, the wet traction is even improved in the process.

Abstract: A method of producing activated carbon from lignite, in which pit-wet lignite is heated to high temperatures. The invention further describes the heating of the lignite in the presence of additional water vapor. The invention also contemplates the addition of potassium ions to the lignite, in the form of potassium hydroxide.

Abstract: Described is a method for preparing a coarse-pored formed carbon from charcoal dust, charcoal tar and sodium hydroxide solution. These ingredients are mixed, kneaded, shaped and low-tempeature carbonized in as low-oxygen atmosphere as possible at temperatures of 300 to 900.degree. C. The product is further activated with water vapor and/or carbon dioxide at temperature of 700 to 1200.degree. C. In the initial mixture, sodium hydroxide is added in amounts of 5.0 to 15.0 % by weight relative to the amount of charcoal dust.

Abstract: Activated carbon is produced from lignite coke. It is characterized by the product of the molasses number times the iodine number divided by 1000 being 350 to 1000 and/or the product of the molasses number times the methylene blue number divided by 10 being 500 to 1200. It is produced by adding aqueous alkali or alkaline earth carbonate solution and/or aqueous alkali or alkaline earth hydroxide solution by means of lance during the steam activation of lignite coke in a rotating tube.

Abstract: Activated carbon is produced from lignite coke. It is characterized by the product of the molasses number times the iodine number divided by 1000 being 350 to 1000 and/or the product of the molasses number times the methylene blue number divided by 10 being 500 to 1200. It is produced by adding aqueous alkali or alkaline earth carbonate solution and/or aqueous alkali or alkaline earth hydroxide solution by means of lance during the steam activation of lignite coke in a rotating tube.

Abstract: There are prepared azido groups containing organosilicon compounds of the formula ##EQU1## where R is a divalent hydrocarbon group having 1 to 8 carbon atoms which is free from ethylenically unsaturated bonds and whose carbon chain in a given case, is interrupted once by --O--, --S--, or --NR.sup.3 where R.sup.3 is hydrogen, methyl, ethyl, or phenyl,R.sup.1 is a univalent alkyl group having 1 to 3 carbon atoms, phenyl, benzyl, or tolyl,R.sup.2 is an alkyl group having 1 to 4 carbon atoms, phenyl, benzyl, or an alkoxyalkyl group having a total of up to four carbon atoms,m is zero, 1, 2, or 3, andn is zero, 1 or 2 whereby m<3-n, by reacting a halosilane of the formulaX--R--SiR.sub.n.sup.1 (OR.sup.2).sub.3-n, IIin which X is chlorine or bromine and the other symbols are as defined above with an azide of the formulaMN.sub.3 IIIin which M is lithium, sodium, potassium, or ammonium, whereby in a give case, there is used a phase transfer catalyst whereupon there is carried out a hydrolysis or partial hydrolysis.

Abstract: There are prepared aqueous solutions of cationic organosilicon compounds which are produced by reacting an alkoxysilylalkyl halide of the formula (RO).sub.3-n R.sub.n.sup.1 --Si--R.sup.2 --X (I) where R is C.sub.1 to C.sub.5 alkyl, methoxy, ethoxy, phenyl, or C.sub.5 to C.sub.8 cycloalkyl; R.sup.1 is C.sub.1 to C.sub.5 alkyl, phenyl, tolyl, benzyl, or C.sub.5 to C.sub.8 cycloalkyl; R.sup.2 is a divalent ethylenic double bond free hydrocarbon group having 3 to 8 carbon atoms, n is zero, 1 or 2 and X is chlorine, bromine, or iodine with a tertiary amine of the formula R.sup.3 NR.sup.4 R.sup.5 (II) where R.sup.3, R.sup.4, and R.sup.5 are the same or different and each is an alkyl group or benzyl in which the number of carbon atoms of the alkyl group or the alkyl groups together is up to 30 or R.sup.4 and .sup.

Abstract: The subject of the invention is a process for the manufacture of (iodoorganyl)alkoxysilanes of the general formula: ##STR1## in which R.sup.1 is an alkylene group, R.sup.2 is an alkoxy group and R.sup.3 and R.sup.4 an alkoxy group and/or an alkyl or aryl group, whereby the chlorine or bromine compound corresponding to that of formula (1) is caused to react with stoichiometric to double molar quantities of an inorganic iodine donor in the presence of 0.01-5 mol % of an organic substituted onium salt of nitrogen, phosphorus, arsenic or antimony or an organic substituted sulfonium salt or a crown ether as catalyst, in certain solubilizing agents.