Abstract: The invention relates to a liquid cleanser with thixotrope properties and its use as a liquid sanitary cleaning agent, in particular for cleaning toilets, washbowls, shower cabinets, shower tubs and swimming pools as well as kitchen sinks.The liquid cleanser contains along with usual cleanser additives in aqueous solution as a surface-active agent one or more compounds selected from the group of alkylamidobetaines, alkylaminobetaines, alkylbetaines, alkyl polyglycol ether carboxylic acids and/or fatty alcohol ethoxylates in mixture with pyrogenic silicic acid and at least one organic acid selected from the group of citric acid, lactic acid, tartaric acid, maleic acid, malic acid, glutaric acid, adipic acid, acetic acid and formic acid.

Abstract: A process for the preparation of triphendioxazines of oxidising cyclisation of 2,5-diarylamino-1,4-benzoquinones with oleum and further optional oxidising agents and/or catalysts, which process comprises charging a reactor simultaneously with the 2,5 diarylamino-1,4-benzoquinone and oleum.

Abstract: Method of cooling a fuel assembly-transport container with a cooling circuit which includes the interior of the transport container and is traversible by a vaporizable coolant such as water, which includes feeding the coolant to the transport container at the start of the cooling operation at so low a rate that a vapor thereof is formed, withdrawing the vapor from the transport container, and maintaining the cooling through heat-removal by the withdrawn vapor until a reduction in the temperature of the withdrawn vapor occurs, and cooling circuit for performing the foregoing method.