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Fernholz Hans, Freudenberger Dieter, Wunder Friedrich: Procede pour la preparation du butanediol-1,4, Process for preparing butanediol-(1.4). Hoechst Aktiengesellschaft, January 29, 1980: CA1070711 (4 worldwide citation)

HOE 75/F 112 ABSTRACT OF THE DISCLOSURE PROCESS FOR PREPARING BUTANEDIOL-(1.4) Butanediol-(1.4) is prepared by hydrogenating maleicanhydride, maleic acid or mixtures thereof in one step inthe presence of catalysts comprising simultaneously elementsof subgroup VII or compounds thereof and elements of ...


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Wojtech Bernhard Dr, Steppich Walter Dr, Freudenberger Dieter Dr, Riedel Knut Dr: Process for the extraction of carboxylic acids from dilute aqueous solutions.. Hoechst, April 23, 1986: EP0178493-A1 (1 worldwide citation)

Die Erfindung betrifft ein Verfahren zur Extraktion von Carbonsäuren aus wässrigen Lösungen mit einem Carbonsäuregehalt unter 8 Gew.-%. Als Extraktionsmittel wird ein Gemisch aus einem aliphatischen Amin mit einer Gesamtkohlenstoffzahl von mindestens 10 und einem Phenol oder Naphthol verwendet. Das ...


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Fernholz Hans, Freudenberger Dieter: Process for the preparation of unsaturated nitriles. Farbwerke Hoechst Aktiengesellschaft vormals Meister Lucius & Bruning, Curtis Morris & Safford, February 4, 1975: US3864383 (1 worldwide citation)

Improvement of a process for the preparation of unsaturated nitriles from drocyanic acid and esters of unsaturated alcohols and carboxylic acids in the gaseous phase in the presence of carrier catalysts containing copper(II) salts, cobalt salts or mixtures of both salts, by additionally passing hydr ...


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Freudenberger Dieter, Wunder Friedrich: Procede dobtention dethyleneglycol, Process for the preparation of ethylene glycol. Hoechst Aktiengesellschaft, BERESKIN & PARR, March 31, 1981: CA1098544

HOE 77/F 071PROCESS FOR THE PREPARATION OF ETHYLENE GLYCOL Abstract of the disclosure: Process for the preparation of ethylene glycol by hydro-genating glycolic acid in the presence of catalysts contain-ing elements or compounds of elements from at least two ofthe groups VIII, VIIb and Ib of the Per ...


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