• Patent Title: Method for producing metal alcoholates
  • Application No.: US17785674
    Application Date: 2020-12-16
  • Publication No.: US11945767B2
    Publication Date: 2024-04-02
  • Inventor: Wolf-Steffen WeisskerNuria Huguet Subiela
  • Applicant: BASF SE
  • Applicant Address: DE Ludwigshafen am Rhein
  • Assignee: BASF SE
  • Current Assignee: BASF SE
  • Current Assignee Address: DE Ludwigshafen am Rhein
  • Agency: Faegre Drinker Biddle & Reath LLP
  • Priority: EP 217475 2019.12.18
  • International Application: PCT/EP2020/086362 2020.12.16
  • International Announcement: WO2021/122702A 2021.06.24
  • Date entered country: 2022-06-15
  • Main IPC: C07C29/70
  • IPC: C07C29/70
Method for producing metal alcoholates
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.
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