Process for preparing controlled molecular weight perfluoropolyethers having perfluoroalkyl or perfluorochloroalkyl end groups
US5051158A · kind A · utility
8Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1989 |
| Grant date | Sep 24, 1991 |
| Priority date | — |
| Expiry date | May 2, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/007
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to preparing perfluoropolyethers having neutral end groups by a process based on the photooxidation of C.sub.3 F.sub.6 and/or C.sub.2 F.sub.4, thereby obtaining controlled molecular weight products having perfluoroalkyl or perfluorochloroalkyl neutral end groups, with high yields of useful products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.