Invention Grant
- Patent Title: Process for preparing polycarbonates using a catalyst system having a quarternary nitrogen compond and a quarternary phosphorous compound
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Application No.: US16341641Application Date: 2017-10-12
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Publication No.: US11945909B2Publication Date: 2024-04-02
- Inventor: Michael Streng
- Applicant: EPC Engineering & Technologies GMBH
- Applicant Address: DE Arnstadt
- Assignee: EPC Engineering & Technologies GMBH
- Current Assignee: EPC Engineering & Technologies GMBH
- Current Assignee Address: DE Arnstadt
- Agency: Winstead PC
- Priority: DE 2016119477.8 2016.10.12
- International Application: PCT/EP2017/076010 2017.10.12
- International Announcement: WO2018/069425A 2018.04.19
- Date entered country: 2019-08-05
- Main IPC: C08G64/30
- IPC: C08G64/30 ; B01J31/02 ; B01J35/00 ; B01J23/04
Abstract:
The invention relates to a method for producing a polycarbonate and the reaction of one or more diaryl carbonates with one or more aromatic compounds, wherein a catalyst combination is used in the process. The invention further relates to a catalyst combination and to the use thereof in a process for producing a polycarbonate.
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