摘要:
The invention relates to a process for preparing ε-caprolactone from 6-hydroxycaproic ester in the gas phase in the presence of activated carbon as a catalyst and subsequent distillation.
摘要:
The invention relates to a process for preparing ε-caprolactone from 6-hydroxycaproic ester in the gas phase in the presence of activated carbon as a catalyst and subsequent distillation.
摘要:
The present invention provides a process for preparing ε-caprolactone in a purity above 99%, in which 6-hydroxycaproic ester comprising from 0.5 to 40% by weight of adipic diester is cyclized in the gas phase at from 150 to 450° C. in the presence of oxidic catalysts and ε-caprolactone is obtained from the cyclization product by distillation.
摘要:
In a process for preparing a supported hydrogenation catalyst with increased hydrogenation activity, which comprises a hydrogenating metal and/or an oxide of a hydrogenating metal on an Al2O3-containing support material, said calcined supported hydrogenation catalyst is treated before or after the final shaping thereof and before use thereof in the hydrogenation with a base solution having a pH of >10 at a temperature in the range from 20 to 120° C. for 1 to 300 hours.
摘要翻译:在含有Al 2 O 3的载体材料上制备含氢化金属和/或氢化金属的氢化物的氢化活性增加的负载型氢化催化剂的方法中,所述煅烧的负载氢化催化剂在其最终成型之前或之后进行处理 并且在使用之前,在温度为20〜120℃的pH为> 10的碱溶液中氢化1〜300小时。
摘要:
In a process for preparing a supported hydrogenation catalyst with increased hydrogenation activity, which comprises a hydrogenating metal and/or an oxide of a hydrogenating metal on an Al2O3-containing support material, said calcined supported hydrogenation catalyst is treated before or after the final shaping thereof and before use thereof in the hydrogenation with a base solution having a pH of >10 at a temperature in the range from 20 to 120° C. for 1 to 300 hours.
摘要翻译:在含有Al 2 O 3的载体材料上制备含氢化金属和/或氢化金属的氢化物的氢化活性增加的负载型氢化催化剂的方法中,所述煅烧的负载氢化催化剂在其最终成型之前或之后进行处理 并且在使用之前,在温度为20〜120℃的pH为> 10的碱溶液中氢化1〜300小时。
摘要:
A polymer obtainable by polycondensation or polyaddition of monomeric compounds, wherefor accompanying use is made as monomeric compound of 2-(2-methylbutyl)-2-propyl-1,3-propanediol of the formula I or its alkoxylated derivatives (also referred to collectively below as C11 diol).
摘要:
A polymer obtainable by polycondensation or polyaddition from monomeric compounds, wherein one monomeric compound used is a mixture of hydroxymethylcyclohexanepropanol or its alkoxylated derivatives and hydroxymethylcyclohexaneisopropanol or its alkoxylated derivatives (referred to below for short as C1/C3 cyclohexanediol mixture).
摘要翻译:其中一种单体化合物是羟甲基环己丙醇或其烷氧基化衍生物和羟甲基环己烷异丙醇或其烷氧基化衍生物(以下简称为C 1 / C 3环己二醇混合物)的混合物,可由单体化合物缩聚或加聚得到的聚合物。
摘要:
Polymer obtainable by polycondensation or polyadduct formation from monomeric compounds, wherein accompanying use is made as monomeric compound ofsubstituted 2-aryl-2-alkyl-1,3-propanediols of the formula I or substituted 2-cyclohexyl-2-alkyl-1,3-propanediols of the formula Ia or the alkoxylated derivatives of the formula I or of the formula Ia.
摘要:
A polymer obtainable by polycondensation or polyaddition of monomeric compounds, wherefor accompanying use is made as monomeric compound of2-(2-methylbutyl)-2-propyl-1,3-propanediol of the formula I or its alkoxylated derivatives (also referred to collectively below as C11 diol).
摘要:
Polymer obtainable by polycondensation or polyadduct formation from monomeric compounds, wherein accompanying use is made as monomeric compound of2-isopropyl-2-alkyl-1,3-propanediols of the formula I or alkoxylated derivatives thereof.