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.

公开(公告)号：US20140343329A1

公开(公告)日：2014-11-20

申请号：US14328787

申请日：2014-07-11

Applicant: BASF SE

Inventor： Stephan Maurer ,  Roman Prochazka ,  Oliver Bey ,  Jochen Steiner ,  Jochem Henkelmann ,  Gerhard Theis ,  Peter Wahl ,  Frank Heimann

IPC: C07C29/80 ,  C07C31/20

CPC classification number: C07C29/80 ,  C07C29/60 ,  C07C31/205 ,  C07C31/20

Abstract: The present invention relates to a process for preparing deodorized 1,2-propanediol, to the use of the purified propanediol and to an apparatus for performing the process.

Abstract translation: 本发明涉及一种用于制备除臭的1,2-丙二醇，使用纯化的丙二醇和用于进行该方法的设备的方法。

公开(公告)号：US09145347B2

公开(公告)日：2015-09-29

申请号：US14328787

申请日：2014-07-11

Applicant: BASF SE

Inventor： Stephan Maurer ,  Roman Prochazka ,  Oliver Bey ,  Jochen Steiner ,  Jochem Henkelmann ,  Gerhard Theis ,  Peter Wahl ,  Frank Heimann

IPC: C07C31/18 ,  C07C29/80 ,  C07C29/60 ,  C07C31/20

CPC classification number: C07C29/80 ,  C07C29/60 ,  C07C31/205 ,  C07C31/20

Abstract: The present invention relates to a process for preparing deodorized 1,2-propanediol, to the use of the purified propanediol and to an apparatus for performing the process.

Abstract translation: 本发明涉及一种用于制备除臭的1,2-丙二醇，使用纯化的丙二醇和用于进行该方法的设备的方法。