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Dive into the research topics where Hellmuth Spes is active.

Publication


Featured researches published by Hellmuth Spes.


Archive | 1976

Process for the purification of crude acetic anhydride

Herbert Eck; Elmar Dipl Ing Dr Bethe; Hans Schwarzbauer; Hellmuth Spes; Klaus Kaiser


Archive | 1964

Process for the hydrolysis of alkanol derivatives

Eduard Enk; Hellmuth Spes


Archive | 1963

Process for manufacturing coarse grain porous formed bodies containing ion exchangers

Gerhard Kunstle; Hellmuth Spes; Theodor Altenschopfer


Archive | 1979

Process for the anilidation of carboxylic acid esters

Wolfgang Deinhammer; Hellmuth Spes


Archive | 1975

Process for preparing N,N,N',N'-tetraacetyl compounds

Gerhard Kunstle; Hellmuth Spes; Herbert Siegl


Archive | 1970

PROCESS FOR CONTINUOUSLY PRODUCING SORBIC ACID BY CONVERTING KETENE WITH CROTONALDEHYDE

Gerhard Kunstle; Hellmuth Spes


Archive | 1977

Process for the continuous preparation of acetoacetamides

Gerhard Kunstle; Hellmuth Spes; Herbert Siegl


Archive | 1970

PROCESS FOR PRODUCING N ALKENYL ACETAMIDES

Herbert Eck; Joseph Heckmaier; Hellmuth Spes


European Journal of Organic Chemistry | 1970

Neue Reaktionen des Ketens, II1) Über die Reaktionen von Aminalen und α-Aminoäthern mit Keten

Herbert Eck; Helmut Prigge; Hellmuth Spes


Archive | 1967

Process for making polyesters containing ether groups

Herbert Eck; Hellmuth Spes

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