Polymerization of hexafluoropropylene oxide
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- 3M INNOVATIVE PROPERTIES CO
- Publication Date
- 2008-02-27
- Estimated Expiration
- Not applicable · inactive patent
Abstract
Description
[0001] Cross References to Related Patent Applications
[0002] This patent application claims priority from European Patent Application No. 05101610.3, filed March 2, 2005, which is hereby incorporated by reference in its entirety. technical field
[0003] This invention relates to the polymerization of hexafluoropropylene oxide (HFPO). In particular, the present invention relates to a process for the polymerization of HFPO that produces a desired degree of polymerization and a small amount of low molecular weight HFPO oligomers. Background technique
[0004] Polymerization or oligomerization of HFPO results in perfluoropolyethers that find use in a variety of applications. For example, the resulting perfluoropolyethers can be used in the manufacture of surfactants, or in the preparation of fluorochemicals suitable for treating a variety of substrates to render them oil and / or water repellent. Generally, relatively low degrees of polymerization, i.e. oligomers of HFPO, ar...