Process for the purification of chlorinated aromatic hydrocarbons
US5993607A · kind A · utility
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16Claims
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Key dates
| Filing date | Apr 10, 1998 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Apr 10, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In a process for the purification by distillation of chlorinated aromatic hydrocarbons originating from the chlorination of aromatic hydrocarbons in the presence of FeCl.sub.3, the crude reaction product is first partially degassed and then directly subjected to distillation in the presence of said FeCl.sub.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.