摘要:
Process for preparing a cyclic tertiary methylamine of the formula I where A is a C4-alkylene group, a C5-alkylene group or a —(CH2)2—B—(CH2)2— group, where B is oxygen (O) or an N—R1 radical and R1 is C1-C5-alkyl, aryl or C5-C7-cycloalkyl, wherein an amino alcohol II from the group consisting of 1,4-aminobutanol, 1,5-aminopentanol, aminodiglycol (ADG) or aminoethylethanolamine of the formula IIa where R1 is as defined above or is hydrogen (H), in which case R1═CH3 in the amine I, is reacted with methanol in a reactor at a temperature in the range from 150 to 270° C. in the liquid phase in the presence of a copper-comprising heterogeneous catalyst.
摘要:
A process for preparing a cyclic tertiary amine of the formula I where A is a C4-alkylene group, a C5-alkylene group or a —(CH2)2—B—(CH2)2— group, where B is oxygen (O) or an N—R1 radical and R1 is C1-C5-alkyl, aryl or C5-C7-cycloalkyl, and the radical R2 is a linear or branched C2-C16-alkyl, C5-C7-cycloalkyl or C7-C20-aralkyl, in which (i) an amino alcohol II from the group consisting of 1,4-aminobutanol, 1,5-aminopentanol, aminodiglycol (ADG) and aminoethylethanolamine of the formula IIa where R1 is as defined above or hydrogen (H), in which case R1=R2 in the amine I, is reacted with a primary or secondary alcohol R2OH (III) at a temperature in the range from 150 to 270° C. in the liquid phase in the presence of a copper-comprising heterogeneous catalyst in a reactor.
摘要:
The present application relates to a process for preparing secondary amines by aminating excess primary or secondary alcohols with primary amines in the liquid phase in the presence of copper-comprising catalysts.
摘要:
The present invention relates to a process for hydrogenating organic nitriles by means of hydrogen in the presence of a catalyst in a reactor, where the shaped body catalyst is arranged in a fixed bed, wherein the shaped body in the shape of spheres or rods has in each case a diameter 3 mm or less, in the shape of tablets a height of 4 mm or less, and in the case of all other geometries in each case has an equivalent diameter L=1/a′ of 0.70 mm or less, where a′ is the external surface area per unit volume (mms2/mmp3), where: a ′ = A p V p , where Ap is the external surface area of the catalyst particle (mms2) and Vp is the volume of the catalyst particle (mmp3). The present invention further relates to a process for preparing downstream products of isophoronediamine (IPDA) or N,N-dimethylaminopropylamine (DMAPA) from amines prepared according to the invention.
摘要翻译:本发明涉及一种在反应器中催化剂存在下通过氢气氢化有机腈的方法,其中成形体催化剂布置在固定床中,其中球体或棒状的成形体具有 每个壳体的直径为3mm以下,片状形状为4mm以下,在各种情况下,所有其他几何形状的等效直径L = 1 / a'为0.70mm以下,其中 a'是每单位体积的外表面积(mms2 / mmp3),其中:a'= A p V p,其中Ap是催化剂颗粒的外表面积(mms2),Vp是催化剂颗粒的体积 mmp3)。 本发明还涉及由根据本发明制备的胺制备异佛尔酮二胺(IPDA)或N,N-二甲基氨基丙胺(DMAPA)的下游产物的方法。
摘要:
The present application relates to a process for preparing secondary amines by aminating excess primary or secondary alcohols with primary amines in the liquid phase in the presence of copper-comprising catalysts.
摘要:
The present application relates to a process for preparing unsymmetric secondary tert-butylamines which, as well as the tert-butyl radical, also comprise an alkyl, cycloalkyl or benzyl radical. They are prepared by reacting corresponding aldehydes with tert-butylamine and hydrogen in the presence of hydrogenation catalysts (reductive amination) in the liquid phase.
摘要:
A process for preparing a cyclic tertiary amine of the formula I where A is a C4-alkylene group, a C5-alkylene group or a —(CH2)2—B—(CH2)2— group, where B is oxygen (O) or an N—R1 radical and R1 is C1-C5-alkyl, aryl or C5-C7-cycloalkyl, and the radical R2 is a linear or branched C2-C16-alkyl, C5-C7-cycloalkyl or C7-C20-aralkyl, in which (i) an amino alcohol II from the group consisting of 1,4-aminobutanol, 1,5-aminopentanol, aminodiglycol (ADG) and aminoethylethanolamine of the formula IIa where R1 is as defined above or hydrogen (H), in which case R1═R2 in the amine I, is reacted with a primary or secondary alcohol R2OH (III) at a temperature in the range from 150 to 270° C. in the liquid phase in the presence of a copper-comprising heterogeneous catalyst in a reactor.
摘要:
The present invention relates to a process for preparing unsymmetric secondary tert-butylamines by continuous amination in the gas phase, wherein tert-butylamine is converted over hydrogenation catalysts in the presence of an alcohol or aldehyde and hydrogen.
摘要:
The present invention relates to a catalyst comprising one or more elements selected from the group consisting of cobalt, nickel and copper, said catalyst being present in the form of a structured monolith, wherein said catalyst comprises one or more elements selected from the group of the alkali metals, alkaline earth metals and rare earth metals. The invention further relates to processes for preparing the inventive catalyst and to the use of the inventive catalyst in a process for hydrogenating organic substances, especially for hydrogenating nitriles.
摘要:
The invention relates to a process for producing carbon fillers having covalently bonded amino groups, by converting a mixture comprising carbon fillers and alkali metals and/or alkaline earth metals and/or amides thereof in liquid anhydrous ammonia, optionally together with an inert solvent, at temperatures of 35 to 500° C. and a pressure of 30 to 250 bar.