Grillo-werke Ag

Klaus Driemel

Dieter Mm Rohe

Ingo Biertümpel

Ingo Biertuempel

Joachim Wolf

Klaus Bunthoff

Wolfgang Schwarz

Helmut Nies

Joachim Van De Flierdt

Horst Kirsch

Peter Bubel

Oliver Gross

The process for the brightening of continuously produced sodium hydrogensulfate obtained in the reaction of sodium chloride and concentrated sulfuric acid in molten sodium hydrogensulfate in a circulation reactor, wherein evolved hydrogen chloride and heating gases generated by an immersion burner are withdrawn at various sites and seed crystals are added for a faster conversion of initially formed metastable phases, is that from 0.01 to 0.05% by weight of aluminium oxide and/or from 0.5 to 1.5% by weight of magnesium oxide and/or magnesium sulfate and, optionally, additionally calcium sulfate are added as seed crystals.

Process for the brightening of sodium hydrogensulfate

The process for the preparation of methanesulfonic acid by reacting sulfite ions within an aqueous system with dimethyl sulfate at an elevated temperature and adding a strong acid subsequently, wherein the molar ratio of sulfite ions to dimethyl sulfate is 1.5 to 2.5:1, preferably 2:1, and the reaction charge is maintained at said elevated temperature for at least 2 h, preferably 4 h.

Process for the preparation of methanesulfonic acid

Polychlorinated waste materials such as polychlorinated dibenzodioxines (PCDD), polychlorinated dibenzofuranes (PCDF) and polychlorinated biphenyls (PCB) are subjected to nonpolluting destruction by combusting said materials together with waste sulfuric acids, acid tars and similar sulfur- and carbon-containing waste products of various compositions and consistencies in a multi-stage combustion furnace.

Process for nonpolluting destruction of polychlorinated waste materials

Disclosed are deodorants containing the hydrolyzed ene-adducts and Diels-Alder adducts of ricinene fatty acids and maleic anhydride, which preferably additionally contain

Deodorants and the preparation and use thereof

Copolymers of unsaturated carboxylic acids with alkaline solutions of monosaccharides or disaccharides capable of forming enolates provide polycarboxylates which are excellently suitable as sequestrants, complexing agents and co-builders in washing and cleaning agents.

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Duisburg, Germany

Klaus Driemel