Preparation of diphenyl compounds
US10858298B2 · kind B2 · utility
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23Claims
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Key dates
| Filing date | Mar 27, 2019 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Apr 29, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D493/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This disclosure relates to the preparation of diphenyl compounds, especially dimethylbiphenyl compounds, in which there is one methyl group on each ring, and their oxidized analogues. These compounds, and particularly alkylated biphenyl compounds and biphenylcarboxylic acids, alcohols and esters, are useful intermediates in the production of a variety of commercially valuable products, including polyesters and plasticizers for PVC and other polymer compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.