公开(公告)号：US10927066B2

公开(公告)日：2021-02-23

申请号：US16333142

申请日：2017-08-31

Applicant: BASF SE

Inventor： Andreas Weickgenannt ,  Silvia Tauro ,  Alexander Duefert ,  Viktor Ladnak ,  Kai Thiele

IPC: C07C209/72 ,  C07C209/84 ,  C07C209/90 ,  C07C209/82 ,  C07C263/10

Abstract: The present invention relates to a process for hydrogenating a mixture (G1) in the presence of a catalyst, where the mixture (G1) comprises at least one colorless amine and at least one color-imparting component. As a result of the hydrogenation step, the at least one color-imparting component is firstly partially, preferably fully, hydrogenated, while the colorless amine, in particular aniline, is not hydrogenated or hydrogenated to only a very small extent. The color-imparting components which cause the discoloration of the amine which is itself in principle colorless are thus removed by hydrogenation, as a result of which purification of the colorless amine or the mixture (G1) is achieved.

公开(公告)号：US20180002303A1

公开(公告)日：2018-01-04

申请号：US15541960

申请日：2016-01-08

Applicant: BASF SE

Inventor： Alexander Duefert ,  Rolf Pinkos ,  Wolf-Steffen Weissker

IPC: C07D307/08 ,  C12P7/18 ,  C07D307/33 ,  C12P17/04 ,  C07C29/149

CPC classification number: C07D307/08 ,  C07C29/149 ,  C07D307/33 ,  C12P7/18 ,  C12P17/04 ,  C07C31/207

Abstract: Processes for preparing tetrahydrofuran and/or butane-1,4-diol and/or gamma-butyrolactone are provided, including a process for preparing tetrahydrofuran (THF) from succinic acid that has been obtained by conversion of biomass, by conversion of the succinic acid to succinic anhydride, and hydrogenation of the succinic anhydride, with removal of certain secondary components.

公开(公告)号：US10308623B2

公开(公告)日：2019-06-04

申请号：US15541960

申请日：2016-01-08

Applicant: BASF SE

Inventor： Alexander Duefert ,  Rolf Pinkos ,  Wolf-Steffen Weissker

IPC: C07D307/08 ,  C07C29/149 ,  C07D307/33 ,  C12P7/18 ,  C12P17/04

Abstract: Processes for preparing tetrahydrofuran and/or butane-1,4-diol and/or gamma-butyrolactone are provided, including a process for preparing tetrahydrofuran (THF) from succinic acid that has been obtained by conversion of biomass, by conversion of the succinic acid to succinic anhydride, and hydrogenation of the succinic anhydride, with removal of certain secondary components.

公开(公告)号：US10077223B2

公开(公告)日：2018-09-18

申请号：US15747809

申请日：2016-07-26

Applicant: BASF SE

Inventor： Alexander Duefert ,  Rolf Pinkos ,  Michael Reiser ,  Philipp Brüggemann ,  Gerhard Theis

IPC: C07C27/04 ,  C07C29/149 ,  B01J23/84 ,  B01J23/843 ,  B01J23/888 ,  C07C67/08 ,  B01J23/72 ,  B01J21/02 ,  C07C31/20 ,  C07C29/90

CPC classification number: C07C29/149 ,  B01J21/02 ,  B01J23/72 ,  C07C29/90 ,  C07C31/202 ,  C07C67/08 ,  Y02P20/52 ,  C07C31/20

Abstract: Process for preparing monoethylene glycol (MEG) by metal-catalyzed reaction of a dialkyl oxalate of the formula I where R1 and R2 are each, independently of one another, methyl, ethyl, n-propyl or isopropyl, with hydrogen (H2), wherein the dialkyl oxalate (I) is used as melt or as a solution in a solvent, dialkyl oxalate (I) and H2 are used in a molar ratio of H2:dialkyl oxalate (I) in the range from 4.0 to 30 and the reaction is carried out continuously in a reactor at a cross-sectional loading of ≥10 m/s, a temperature in the range from 150 to 270° C., a pressure in the range from 150 to 390 bar and in the presence of a chromium-free heterogeneous catalyst comprising copper.