Abstract: Described is a chemical-mechanical polishing (CMP) composition comprising abrasive particles containing ceria.

Abstract: Aqueous dispersion containing transition aluminium oxide as only solid and a dispersant, in which—the transition aluminium oxide is present in the form of aggregates of primary particles, the content of transition aluminium oxide in the dispersion is from 40 to 65% by weight, the aggregates in the dispersion have a mean aggregate diameter of less than 100 nm,—the dispersant contains polyaluminium hydroxychloride, polyaluminium hydroxynitrate and/or polyaluminium hydroxysulphate, the dispersion has a pH of from 3 to 5.

Abstract: Aqueous dispersion containing transition aluminium oxide as only solid and a dispersant, in which—the transition aluminium oxide is present in the form of aggregates of primary particles, the content of transition aluminium oxide in the dispersion is from 40 to 65% by weight, the aggregates in the dispersion have a mean aggregate diameter of less than 100 nm,—the dispersant contains polyaluminium hydroxychloride, polyaluminium hydroxynitrate and/or polyaluminium hydroxysulphate, the dispersion has a pH of from 3 to 5.

Abstract: For the fractionation of viscous silicones, oily or polymeric diorganosilicones with a chain length of between 2 and 10 000 are separated into a top and a bottom product, preferably continuously in an extracting column, using compressed hydrocarbons such as ethane, propane and n- or i-butane, or mixtures thereof, at temperatures of between 25 and 250° C., pressures of between 20 and 500 bar and a gas density >160 kg/m3. To avoid viscosity problems, either an organic solvent in the form of a C5-8 alkane or up to 85 wt. % of the compressed gas (mixture) can be added to the starting materials prior to fractionation. With this process, high-quality viscous silicone fractions are obtained, which have a chain length of 200 to 10 000 and/or a viscosity of 100 to 500 000 mPas, and whose total oligomer content D4 to D20 is less than 0.05 wt. %.

Abstract: The present invention provides a flocculation and/or fixing agent for paper sizing in the weakly acidic to weakly alkaline pH range, wherein it contains or consists to a preponderant amount of a mixture and/or a co-condensation product of the components cationic dicyandiamide resin and polyaluminium hydroxy compound.The present invention also provides processes for the production of this agent.

Abstract: The present invention provides a process for hardening epoxide resin masses, wherein there is added a solution of dicyandiamide and cyanamide in a weight ratio of from 0 to 10:1 in at least one organic solvent.The present invention also provides a hardener solution for epoxide resin masses, consisting of dicyandiamide and cyanamide in a weight ratio of 0 to 10:1 and at least one organic solvent.

Abstract: The present invention provides an agent for inhibiting the nitrification of nitrogen-containing fertilizers based on dicyandiamide, which comprises 1 to 40% by weight of a fertilizer which is readily soluble in water and/or ammonia.The present invention also provides a process for the production of this agent, wherein finely particulate dicyandiamide is sprayed with an aqueous solution of a fertilizer which is readily soluble in water and/or ammonia and subsequently dried.

Abstract: The present invention provides a hardener solution for epoxide resin masses, based on dicyandiamide, wherein it contains(a) 50 to 90 parts by weight of dimethylformamide,(b) 5 to 50 parts by weight of a low boiling ketone and/or alcohol and(c) 5 to 32 parts by weight of dicyandiamide, referred to 100 parts by weight of the sum of components (a) and (b).

Abstract: An agent on the basis of dicyandiamide for the stabilization of polyvinyl chloride against heat and light is described, which has an additional content of 0.5 to 7 equivalents of water and/or compounds containing water and/or compounds yielding water by cleavage, with respect to the amount of dicyandiamide.

Abstract: A cyanuric chloride of improved shelf life is described, which contains 0.1 to 10% of dicyandiamide by weight. The cyanuric chloride of the invention shows both a decidedly lesser tendency to cake up and an improved resistance to hydrolysis in the presence of moisture.