公开(公告)号：US11945767B2

公开(公告)日：2024-04-02

申请号：US17785674

申请日：2020-12-16

Applicant: BASF SE

Inventor： Wolf-Steffen Weissker ,  Nuria Huguet Subiela

IPC: C07C29/70

CPC classification number: C07C29/705

Abstract: Process for preparing metal alkoxides by means of transalcoholization, wherein a lower metal alkoxide is fed via a side feed into a reactive distillation column comprising a rectifying section situated above the feed and a stripping section situated below the feed; a higher alcohol is fed into the stripping section, the bottom and/or a bottoms circuit of the column; a solution of a higher metal alkoxide in the higher alcohol is taken off at the bottom of the column and/or from the bottoms circuit; and a vapor comprising lower alcohol is taken off at the top of the column, the vapor is at least partially condensed and a substream of the condensate is recycled to the top of the column as reflux. The process enables the preparation of metal alkoxides with a reduced energy requirement.

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：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.