Method for synthesizing paraphthaloyl chloride through continuous flow in microchannel reactor
US10689321B2 · kind B2 · utility
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Key dates
| Filing date | Jul 7, 2017 |
| Grant date | Jun 23, 2020 |
| Priority date | — |
| Expiry date | Jul 7, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C63/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The disclosure provides a method for synthesizing paraphthaloyl chloride through terephthalic acid chlorination in a reaction mode of a microchannel continuous flow. Compared with an existing technology, this method has characteristics of accurate control of reaction conditions, high phosgene/triphosgene utilization ratio, low catalyst dosage, high TPA conversion ratio within few tens of seconds of reaction time, high TPC yield and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.