Process for the direct fluorination of polymeric resins
US5149744A · kind A · utility
6Cited by
1References
7Claims
0Family size
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Key dates
| Filing date | Jun 28, 1990 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | Jun 28, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/187
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the direct fluorination of polymeric resins in which polymeric material capable of being fluorinated is contacted with elemental fluorine and a dense carrier fluid having a critical temperature higher than ambient temperature, a boiling point lower than ambient temperature minus 60 celcius degrees, and a molecular weight greater than the molecular weight of elemental fluorine. The dense carrier fluid preferably has a molecular weight in the range of about 40 to about 200.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.