Abstract:
A suitcase (K) consists of two suitcase shells (1) and (2), which can be folded together, and includes castors and a pull handle (Z). The pull handle is on the narrow side (14) opposite the castors, and is swingably seated on a mounting plate (17) attached to the other suitcase shell (2). The suitcase shell (2) is adapted to be connected to the opposite suitcase shell (1) by at least one closure which extends over a fold joint (3) of the suitcase. This achieves a structurally advantageous configuration which is stable in use due to an interpenetration between hasp closure (I) and the mounting plate.
Abstract:
A process is disclosed for the rapid dissolution of a water soluble polymer by mixing the polymer with water and using a hydrophilic wetting agent, wherein the water is introduced under normal mixing conditions into a prepared water-in-oil polymer dispersion that is free of wetting agent, the wetting agent being added after dilution of the prepared water-in-oil dispersion with water. It is preferred that the water be added under pressure through a nozzle.
Abstract:
A process of recovering an n-hexane product which is free from aromatic compounds by extractive distillation from a mixture of aromatic and non-aromatic compounds. The mixture is fed to and distilled in a first distillation column, from which a benzene-containing sump product and the overhead product consisting of non-aromatic compounds are withdrawn. The distillate is laterally withdrawn above the feeding point of the feed mixture and transferred to the upper portion of a second distillation column. The hexane cut is withdrawn as sump product from the second distillation column and fed to an extractive distillation column approximately in the middle thereof and is extracted in the extractive distillation column with a selective solvent which is fed above the feeding point of the hexane cut consisting of the sump product of the second distillation column. The sump product containing the selective solvent is withdrawn from the extractive distillation column and the overhead thereof vapors are condensed. The condensate is withdrawn as an n-hexane product that is free from aromatic compounds.