Process for preparing polycarbonates using a catalyst system having a quarternary nitrogen compond and a quarternary phosphorous compound
US11945909B2 · kind B2 · utility
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15Claims
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Assignee
Inventor
Key dates
| Filing date | Oct 12, 2017 |
| Grant date | Apr 2, 2024 |
| Priority date | — |
| Expiry date | Dec 12, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J31/0239
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.