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Volker Taglieber, Wolfgang Hoelderich, Rudolf Kummer, Wolf D Mross, Guenter Saladin: Preparation of tert-butylamine from isobutene. BASF Aktiengesellschaft, Keil & Weinkauf, May 29, 1990: US04929758 (9 worldwide citation)

Amines are prepared from an olefin and ammonia or a primary and/or secondary amine in the presence of a zeolite catalyst of the pentasil type. Iron silicate zeolites of the pentasil type having an SiO.sub.2 /Fe.sub.2 O.sub.3 ratio greater than or equal to 10 are preferably used.


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Heinz Walter Schneider, Rudolf Kummer, Volker Taglieber: Preparation of .delta.-formylvalerates. BASF Aktiengesellschaft, Keil & Weinkauf, January 31, 1989: US04801738 (8 worldwide citation)

.delta.-Formylvalerates are prepared by a process wherein a 3-pentenoate is treated with an isomerization catalyst at elevated temperatures and a 4-pentenoate is distilled off, and the resulting 4-pentenoate is reacted with carbon monoxide and hydrogen at from 80 to 160.degree. C. under from 1 to 30 ...


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Rudolf Kummer, Heinz Walter Schneider, Volker Taglieber, Franz Josef Weiss: Purification of carboxylates containing aldehydes, acetals and/or unsaturated compounds. BASF Aktiengesellschaft, Keil & Weinkauf, June 11, 1985: US04523027 (8 worldwide citation)

Carboxylates which contain aldehydes, acetals and/or unsaturated compounds and are obtained by reacting an olefinically unsaturated compound with carbon monoxide and an alkanol are purified by a process wherein the said carboxylates are treated with hydrogen at elevated temperatures in the presence ...


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Volker Taglieber, Wolfgang Hoelderich, Rudolf Kummer, Wolf D Mross, Guenter Saladin: Production of amines from an olefin and ammonia or a primary or secondary amine. BASF Aktiengesellschaft, Keil & Weinkauf, May 29, 1990: US04929759 (2 worldwide citation)

Amines are prepared from an olefin and ammonia or a primary or secondary amine, or a mixture of these, in the presence of a borosilicate or borogermanate zeolite of the pentasil type as a catalyst, by a process in which the amine obtained is isolated from the reaction mixture, and unreacted starting ...


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Rudolf Kummer, Volker Taglieber, Franz Josef Weis, Heinz Walter Schneider: Purification of carboxylic acid esters containing aldehydes and/or acetals. BASF Aktiengesellschaft, Keil & Witherspoon, September 21, 1982: US04350572 (2 worldwide citation)

A process for purifying carboxylic acid esters which have been obtained by reacting olefinically unsaturated compounds with carbon monoxide and alkanols and which contain aldehydes or acetals, wherein the said esters are treated with a strongly acidic agent, with or without addition of water.


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Rudolf Kummer, Franz Josef Weiss, Heinz Walter Schneider, Volker Taglieber: Preparation of C.sub.1 -C.sub.4 -alkyl pent-3-enoates. BASF Aktiengesellschaft, Keil & Witherspoon, February 16, 1982: US04316047 (1 worldwide citation)

A process for the preparation of C.sub.1 -C.sub.4 -alkyl pent-3-enoates, wherein butadiene, or a hydrocarbon mixture containing butadiene, either of which contains not more than 0.1% by weight of butynes, is reacted with carbon monoxide and an alkanol of 1 to 4 carbon atoms in the presence of a coba ...