Abstract:
The invention relates to 5-isopropyl-3-aminomethyl-2-methyl-1-amino-cyclohexane (carvone diamine) and a method for the production thereof by a) reacting carvone with hydrogen cyanide, b) then reacting the carvone nitrile obtained in step a) with ammonia in the presence of an imine-forming catalyst, and c) subsequently reacting the reaction mixture that is obtained in step b) and contains carvone nitrilimine with hydrogen and ammonia on hydrogenation catalysts. The invention further relates to the use of carvone diamine as a curing agent for epoxy resins, as an intermediate product when producing diisocyanates, as an initiator entity when producing polyetherols, and/or as a monomer for producing polyamides.
Abstract:
Aqueous solution comprising (A) in the range of from 30 to 60% by weight of a complexing agent, selected from the alkali metal salts of methylglycine diacetic acid and the alkali metal salts of glutamic acid diacetic acid, (B) in the range of from 700 ppm to 7% by weight of a polymer being selected from polyamines, the N atoms being partially or fully substituted with CH2COOH groups, partially or fully neutralized with alkali metal cations, ppm and percentages referring to the total respective aqueous solution
Abstract:
Proceso para la preparación de a-aminoácidos racémicos o de glicina, en donde el ácido a-hidroxicarboxílico correspondiente, se selecciona de ácido hidroxiacético, ácido láctico, ácido málico, ácido a-hidroxiglutámico, ácido isocitrico, ácido tartrónico y ácido tartárico, o al menos una sal del ácido a-hidroxicarboxilico correspondiente se hace reaccionar en la presencia de al menos un catalizador heterogéneo que comprende al menos un metal de transición, en la presencia de hidrógeno con al menos un compuesto (c) de nitrógeno, en donde el compuesto (c) de nitrógeno se selecciona de aminas primarias y secundarias y amoniaco.
Abstract:
Procedimiento para la separación de subproductos de mezclas de producto ricas en N-vinilamida (N-vinilamida enbruto), caracterizado porque se realiza una extracción de la N-vinilamida en bruto con un disolvente orgánico comomedio de extracción.
Abstract:
AbstractMETHOD FOR THE PRODUCTION OF ETHER CARBOXYLATESresent invention retales to a process for preparing either carboxy]ales.No suitable figure
Abstract:
Aqueous solution comprising (A) in the range of from 30 to 60% by weight of a complexing agent, selected from the alkali metal salts of methylglycine diacetic acid and the alkali metal salts of glutamic acid diacetic acid, (B) in the range of from 700 ppm to 7% by weight of a polymer being selected from polyamines, the N atoms being partially or fully substituted with CH2COOH groups, partially or fully neutralized with alkali metal cations, ppm and percentages referring to the total respective aqueous solution