Abstract:
The present invention relates to a method for producing amines by reacting glycerin with hydrogen and an aminization agent, selected from the group of ammonia, primary and secondary amines, in the presence of a catalyst, at a temperature of 100°C to 400°C and a pressure of 0.01 to 40 MPa (0.1 to 400 bar). A glycerin based on sustainable raw materials is preferably used. The catalyst preferably comprises a metal or a plurality of metals or one or more oxygen-containing compounds of the metals of groups 8 and/or 9 and/or 10 and/or 11 of the periodic table of elements. The invention further relates to the use of the reaction products as an additive in cement or concrete production and in other fields of application. The present invention further relates to the compounds 1,2,3-triaminopropane, 2-aminomethyl-6-methyl-piperazine, 2,5-bis(aminomethyl)-piperazine, and 2,6-bis(aminomethyl)-piperazine.
Abstract:
The present invention relates to a process for preparing nitriles, imines and/or enamines by converting a primary and/or secondary amine in the presence of oxygen and of an oxidation catalyst, which comprises converting an amine to the gas phase and passing it over an oxidation catalyst in an oxygenous gas stream. The invention further relates to a process for preparing amino nitriles and to the hydrolysis thereof to amino amides.
Abstract:
The invention relates to a method for hydrogenating oligonitriles containing at least two nitrile groups in the presence of a catalyst which is pre-treated by being contacted with a compound A prior to the hydrogenation process, said compound A being selected among alkali metal carbonates, alkaline earth metal carbonates, ammonium carbonate, alkali metal hydrogen carbonates, alkaline earth metal hydrogen carbonates, ammonium hydrogen carbonate, alkaline earth metal oxocarbonates, alkali metal carboxylates, alkaline earth metal carboxylates, ammonium carboxylates, alkali metal dihydrogen phosphates, alkaline earth metal dihydrogen phosphates, alkali metal hydrogen phosphates, alkaline earth metal hydrogen phosphates, alkali metal phosphates, alkaline earth metal phosphates and ammonium phosphate, alkali metal acetates, alkaline earth metal acetates, ammonium acetate, alkali metal formates, alkaline earth metal formates, ammonium formate, alkali metal oxalates, alkaline earth metal oxalates, and ammonium oxalate.
Abstract:
The invention relates to a diamine industrially producing method from a corresponding alkenile-nitrile which contains at least one C-C double bond consisting (a) in reacting the alkenile-nitrile in a first reactor with a corresponding monoamine by exothermally adding a monoamine to said double bond in such a way that an aminoalkyle nitrile is obtained, wherein the monoamine and water are provided and the alkenile-nitrile is added, (b) in evaporating the unreacted alkenile-nitrile and aminoalkyle for enriching the aminoalkyle nitrile produces in the sump of the first reactor, (c) in transferring the aminoalkyle nitrile bottom product of the step (b) to a second reactor, (d) in batchwisely catalytically hydrogenating the aminoalkyle nitrile transferred at the step (c) in such a way that a diamine is produced in the second reactor, wherein for each batch, an appropriate catalyst and water for hydrogenating nitrils into amines, a desired diamine and a base are provided, the second reactor is supplied with hydrogen and the aminoalkyle nitrile transferred at the step (c) is proportioned therein, and (e) in extracting the diamine and in possibly repeating the steps from (a) to (e). A device for producing the diamine and the use of the devices are also disclosed. The preferred diamine is embodied in the form of a 3-dimethylaminopropylamine (DMAPA).
Abstract:
A composition comprising compound (I) of formula and compound (II) of formula wherein R2a and R2b independently from each other are a linear alkyl group with 1 to 4 carbon atoms and R1a, R1b, R3a to R6a and R3b to R6b independently from each other are a hydrogen atom or a linear alkyl group with 1 to 4 carbon atoms.
Abstract:
The invention relates to a method for the reductive amination of a carbonyl compound, comprising one or more carbonyl groups that can be aminated reductively, forming the corresponding primary amine, characterized in that the reaction is carried out in the presence of a homogenously dissolved complex catalyst (K), containing at least one metal atom from group 8, 9 or 10 of the periodic system, which bears a bidentate phosphane ligand, a carbonyl ligand, a neutral ligand and a hydride ligand, and an acid as co-catalyst.