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    Process for isolating pure tert-butyl (meth)acrylate from crude tert-butyl (meth)acrylate by distillation
    1.
    发明授权
    Process for isolating pure tert-butyl (meth)acrylate from crude tert-butyl (meth)acrylate by distillation 有权

    公开(公告)号：US10730823B2

    公开(公告)日：2020-08-04

    申请号：US16471993

    申请日：2017-12-11

    Applicant: BASF SE

    Inventor： Ortmund Lang ,  Bernd Metzen ,  Claus Hechler

    IPC: C07C67/54 ,  C07C69/54 ,  B01D3/14 ,  B01D3/22

    Abstract: A process for isolating pure tert-butyl (meth)acrylate from crude tert-butyl (meth)acrylate by distillation, wherein the process is carried out in a dividing wall column having separation-active internals and a vaporizer and in which a dividing wall is arranged in the longitudinal direction of the column to form an upper joint column region, a lower joint column region, an inflow section having a side feed point, and an offtake section having a side offtake point, where the column has from 20-80 theoretical plates and the ratio of the amount of liquid at the upper end of the dividing wall going to the enrichment section and the stripping section of the column is set in the range from 1:0.2 to 1:5.

    Process for the Preparation of 5-Hydroxymethylfurfural (HMF)
    5.
    发明申请
    Process for the Preparation of 5-Hydroxymethylfurfural (HMF) 有权
    制备5-羟甲基糠醛（HMF）的方法

    公开(公告)号：US20140371473A1

    公开(公告)日：2014-12-18

    申请号：US14302046

    申请日：2014-06-11

    Applicant: BASF SE

    Inventor： Benoit Blank ,  Alois Kindler ,  Peter Bassler ,  Markus Piepenbrink ,  Ortmund Lang ,  Carmen Feldner

    IPC: C07D307/46 ,  B01D3/00

    CPC classification number: C07D307/46 ,  B01D3/009 ,  C07D307/48 ,  Y02P20/127

    Abstract: A process is described for the preparation of 5-hydroxymethylfurfural (HMF), which comprises the following steps: provision or preparation of a starting mixture, comprising one, two or more starting compounds selected from the group consisting of hexoses, oligosaccharides comprising hexose units, and polysaccharides comprising hexose units, one, two or more organic salts with a melting point 200° C. at 1013.25 hPa, optionally additionally one or more catalysts for the conversion of the one starting compound or at least one of the two or more starting compounds to 5-hydroxymethylfurfural (HMF), optionally water, optionally further substances, adjustment of reaction conditions such that an amount of the starting compound or starting compounds converts to HMF.

    Abstract translation: 描述了用于制备5-羟甲基糠醛（HMF）的方法，其包括以下步骤：提供或制备起始混合物，其包含一种，两种或更多种选自己糖，包含己糖单元的寡糖， 和多糖，其包含己糖单元，一种，两种或更多种在1013.25hPa的熔点<180℃和沸点> 200℃的有机盐，任选地另外一种或多种用于转化一种起始化合物的催化剂或 两种或更多种起始化合物中的至少一种至5-羟甲基糠醛（HMF），任选的水，任选的其它物质，调节反应条件使得起始化合物或起始化合物的量转化为HMF。

    Device for carrying out material exchange processes
    6.
    发明授权
    Device for carrying out material exchange processes 有权

    公开(公告)号：US12290768B2

    公开(公告)日：2025-05-06

    申请号：US18012996

    申请日：2021-06-17

    Applicant: BASF SE

    Inventor： Bernd Metzen ,  Christian Kunkelmann ,  Ortmund Lang ,  Marvin Kramp ,  Claus Hechler

    IPC: B01D3/32 ,  B01D3/00 ,  B01D3/36 ,  C07C67/08 ,  C07C67/54

    Abstract: The invention relates to an apparatus for carrying out mass transfer processes, comprising a column having at least two inlet pipes for introducing a gaseous phase, where separation-active internals are accommodated in the column and a column section extends from the at least two inlet pipes to the separation-active internals, in which section a coverage of a cross-sectional area of the column is less than 25%, based on the total cross-sectional area, and where the at least two inlet pipes have a height offset which corresponds to not more than three times an inlet pipe diameter and the at least two inlet pipes are at an angle (α) of from 60° to 150° to one another and have asymmetry with respect to one another. The invention further relates to a use of the apparatus and also a method for designing the apparatus.

    Process for continuously preparing n-butyl acrylate or isobutyl acrylate
    7.
    发明授权
    Process for continuously preparing n-butyl acrylate or isobutyl acrylate 有权

    公开(公告)号：US10941103B2

    公开(公告)日：2021-03-09

    申请号：US16636703

    申请日：2018-08-13

    Applicant: BASF SE

    Inventor： Ortmund Lang ,  Tim Blaschke ,  Christian Raith ,  Michael Schafranka ,  Claus Hechler

    IPC: C07C67/08 ,  C07C67/54 ,  C07C67/58 ,  C07C69/54

    Abstract: A process for continuously preparing a butyl acrylate H2C═CH—C(═O)OR, with R=n-butyl or isobutyl, wherein aqueous 3-hydroxypropionic acid is converted under dehydrating and esterifying conditions in the presence of the corresponding butanol R—OH in a reactor with a rectification column and butyl acrylate formed, unconverted butanol and water used and formed are distilled off overhead as a ternary azeotrope, after separation into a liquid aqueous phase and liquid organic phase each of the aqueous and organic phases is at least partly discharged, and the organic phase comprising the butyl acrylate and the butanol is subjected to distillative separation.

    Process for isolating pure butyl acrylate from crude butyl acrylate by distillation, where butyl is n-butyl or isobutyl
    8.
    发明授权
    Process for isolating pure butyl acrylate from crude butyl acrylate by distillation, where butyl is n-butyl or isobutyl 有权

    公开(公告)号：US10906862B2

    公开(公告)日：2021-02-02

    申请号：US16472018

    申请日：2017-12-11

    Applicant: BASF SE

    Inventor： Ortmund Lang ,  Bernd Metzen ,  Claus Hechler

    IPC: C07C67/54 ,  B01D3/14 ,  B01D3/42 ,  C07C69/54

    Abstract: A process for isolating pure butyl acrylate from crude butyl acrylate, which is carried out in a dividing wall column having separation-active internals and a vaporizer, and in which: a dividing wall is arranged in a longitudinal direction of the column to form an upper joint column region, a lower joint column region, an inflow section having a side feed point and an offtake section having a side offtake point; a ratio of an amount of liquid at an upper end of the dividing wall going to an enrichment section and a stripping section of the column is set in the range from 1:0.2 to 1:5; and a ratio of an amount of vapor streams at a lower end of the dividing wall going to the stripping section and the enrichment section of the column is set in a range from 1:0.5 to 1:2.0.

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