Invention Grant
- Patent Title: Process for preparing cyclododecanone
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Application No.: US16482981Application Date: 2018-01-31
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Publication No.: US11370752B2Publication Date: 2022-06-28
- Inventor: Luca Cameretti , Jan Caßens , Ralf Meier
- Applicant: Evonik Operations GmbH
- Applicant Address: DE Essen
- Assignee: Evonik Operations GmbH
- Current Assignee: Evonik Operations GmbH
- Current Assignee Address: DE Essen
- Agent Linda S. Li; Jason S. Ngui; Andrew H. Chung
- Priority: DE102017000989.9 20170203
- International Application: PCT/EP2018/052356 WO 20180131
- International Announcement: WO2018/141771 WO 20180809
- Main IPC: C07D201/04
- IPC: C07D201/04 ; C07C45/48 ; C07C49/413 ; C07C49/307 ; C07D201/10
Abstract:
The invention relates to a method for producing cyclododecanone (CDON). During the production, contaminated cyclododecane (CDAN) is produced. This can be separated from CDON by distillation (CDAN-containing fraction). The separation of CDAN and impurities such as 13-oxabicyclo [7.3.1]tridecane occurs by crystallizing out CDAN from the CDAN-containing fraction.
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