Method of making and polymerizing perfluoroalkylene acetylene compounds
US4618734A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1983 |
| Grant date | Oct 21, 1986 |
| Priority date | — |
| Expiry date | Aug 12, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/081
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A perfluoroalkylene .alpha.,.omega.-diacetylene compound having a fluorocarbon chain of from 5 to about 20 carbon atoms between two acetylene end groups, and a method of forming same by first reacting perfluoroalkylene diiodide having the formula I(CF.sub.2).sub.n I, wherein n is a whole number from 5 to about 20, inclusive with bis(trimethylsilyl)acetylene, and converting the reaction product to the diacetylene with KF. The diacetylene has the general formula HC.tbd.C(CF.sub.2).sub.n C.tbd.CH, wherein n is as set forth above, and it can be polymerized to produce a clear, hard, cross-linked resin suitable for use as a coating on bearings and in the manufacture of aircraft windshields. Monofunctional counterparts of the HC.tbd.C(CF.sub.2).sub.n C.tbd.CH compounds can be formed by substituting perfluoroalkyl primary iodides for the diiodides in the above-described reaction. The resulting compounds (fluorinated monofunctional acetylenes) can be trimerized to yield liquids suitable as lubricating oils, hydraulic fluids, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.