Abstract: A conching machine having at least two rotors (6, 7, 10, 10') respectively arranged in a trough compartment (3, 4, 5) of a conching trough (1), with the trough walls (2, 15, 115) of the conching trough (1) of each rotor (6, 7, 10, 10') being arranged as closely surrounding each other. Of the rotors (6, 7, 10, 10') at least one rotor (6, 7) is designed with radially extending blades (8) and at least one further rotor as a cutter rotor (10, 10') with at least one cutting edge (12).

Abstract: A method is described for controlling the grinding of a dispersion of solid particles in a doughy-pasty mass, such as a chocolate mass, on a roller mill line having at least one preceding and one postponed roller mill (1 or 4), of which at east the postponed roller mill (4) is a roll refiner mill with a plurality of rollers (W1-W5). In this arrangement, the outlet roller gap of the preceding roller mill (1) is changed for decreasing or increasing the layer thickness of the mass in the postponed roller mill (4) having at least three rollers. Additionally and besides changing the outlet roller gap of the preceding roller mill (1) a control of the layer thickness of the postponed roller mill (4) is carried out according to a proportional-integral-differential control system.

Abstract: In a conching device (1) at least one rotor (2, or 3, respectively) is driven by an electric motor (9). The driving motor (9) is controlled by means of a motor control unit (8). To establish the amount of energy introduced into the conching device (1), at least one motor-operation parameter is detected and evaluated. To shorten the conching time of a conching process to the necessary extent, it is provided to establish the amount of energy introduced into the conching device at least during the viscous-plastic phase of the chocolate mass and to control the conching process in dependency upon the summation value of energy attained. Since the amount of energy introduced during the viscous-plastic phase determines the properties and the quality of the chocolate, a high reproducibility will be ensured.

Abstract: A method for retreading and partially replacing the belt of a pneumatic vehicle tire, possibly accompanied by the interposition of binder layers and the use of coatings. First the replacement belt ply or plies, and then the finish-vulcanized profiled tread strip, are placed upon the tire body. A pressure treatment, possibly at an elevated temperature, is then effected. In order, along with a relatively short vulcanizing or processing time in the vulcanizing apparatus, to be able to dispense with the use of steel bandages or sleeves, the replacement belt ply or plies are vulcanized prior to placing these plies on the tire body.

Abstract: New dyestuff salts of the formula ##STR1## wherein A denotes the radical of an azine dyestuff, R, R.sub.1 and R.sub.2 denote alkyl radicals with a total of 10-24 carbon atoms and n denotes the number 1-4. The dyestuff salts show excellent solubility in organic solvents such as alcohols, ketones and esters. Due to the excellent solubility in organic solvents, the dyestuff of the instant invention are especially suitable for dyeing solutions of polymers such as polystyrene or polyamides.

Abstract: New dyestuff salts of the formula ##EQU1## WHEREIN A denotes the radical of an anionic dyestuff, R, R.sub.1 and R.sub. 2 denote alkyl radicals with a total of 10 - 24 carbon atoms and n denotes the number 1 - 4.The dyestuff salts show excellent solubility in organic solvents such as alcohols, ketones and esters. Due to the excellent solubility in organic solvents, the dyestuffs of the instant invention are especially suitable for dyeing solutions of polymers such as polystyrene or polyamides.

Abstract: A process for the manufacture of colored shaped articles from high polymer synthetic resins, wherein water-insoluble, hydrophobic, high polymer synthetic resins in solid form, especially in the form of granules or powders, in a mixture of hydrophilic and organophilic solvents that are reciprocally soluble in one another only to a limited extent and form a two-phase system, are treated with dyestuffs or optical brighteners, the solubility of which in the organophilic portion of the two-phase system is greater than in the hydrophilic portion, the solvent is removed, the synthetic resin dried and shaped, optionally with addition of untreated high polymer fully synthetic resin, from the melt or from a solvent.

Abstract: Tetra-(alkylsulphamoyl)-copper phthalocyanines of the formula ##EQU1## WHEREIN CuPc denotes a copper phthalocyanine radical, R.sub.1, R.sub.2 and R.sub.3 denote alkyl radicals with a total of 7 - 12 C atoms, R.sub.4, R.sub.5 and R.sub.6 denote alkyl radicals with a total of 11 - 13 C atoms and n denotes 0 - 4 have a good solubility an alcohol and are particularly suitable for dyeing alcoholic solutions of film-forming polymers.