Hydrofluorination process
US4049728A · kind A · utility
2Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1976 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Mar 23, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Improved hydrofluorination process with minimum polymer and heavy oil formation comprising carrying out the hydrofluorination of olefins with HF in a paraffinic diluent followed by low pressure and low temperature fractional distillation. In a preferred embodiment, normal butane or normal pentane is used as a diluent in the hydrofluorination, and the entire process of hydrofluorination and recovery is carried out at temperatures below about 80.degree. F (26.7.degree. C).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.