Abstract:
The invention relates to a method for producing an ethyleneamine mixture, according to which an aminonitrile mixture containing at least 2 α-aminonitrile is hydrogenated to at least 5 % by weight in the presence of a catalyst and optionally a solvent.
Abstract:
The invention relates to aminocarboxylic acid esters having EO/PO/BuO-blockpolymers, to a method for producing said type of compounds and to the use thereof as demulsifiers, in particular for crude oil emulsions.
Abstract translation:本发明涉及具有EO / PO / BuO-嵌段共聚物的氨基羧酸酯,涉及用于制备所述类型的化合物的方法,并涉及其作为破乳剂,特别是用于原油乳液的用途。
Abstract:
Mixture of L- and D-enantiomers of methyl glycine diacetic acid (MGDA) or its respective mono-, di or trialkali metal or mono-, di- or triammonium salts, said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 10 to 75%.
Abstract:
The invention relates to 2,6-bis-(aminomethyl)piperidine derivates themselves ("2,6-BAMP derivatives" for short henceforth), which are defined by the general formula (I) specified below. The invention additionally relates to a method for producing such 2,6-BAMP derivatives by hydrogenating the corresponding 2,6 dicyanopiperidine derivatives ("2,6-DCP derivatives" for short henceforth) in the presence of a catalyst. The invention further relates to the use of the 2,6-BAMP derivatives according to the invention as a curing agent for epoxy resins, as an intermediate product in the production of diisocyanates, which play an important role in the production of polyurethanes, as a starter in the production of polyetheroles, and/or as a monomer for producing polyamide. The invention further relates to the diisocyanates themselves produced from the 2,6-BAMP derivatives and to the corresponding production method.
Abstract:
The present invention relates to an improved process for batchwise or continuous isomerization of cis-2-pentenenitrile to 3-pentenenitriles in the presence of 1,4-diazabicyclo[2.2.2]octane as a catalyst.
Abstract:
What is proposed is a process for preparing a crystalline L-MGDA tri-alkali metal salt by crystallization from an aqueous solution thereof which has been obtained by Strecker synthesis proceeding from L-α-alanine, by reaction with formaldehyde and hydrogen cyanide to give L-α-alanine-N,N-diacetonitrile and subsequent alkaline hydrolysis of the L-α-alanine-N,N-diacetonitrile to give the L-MGDA tri-alkali metal salt, which is characterized in that a temperature of 150°C is not exceeded in the course of alkaline hydrolysis.