Dissolution of tetrafluoroethylene polymers at superautogenous pressure
US5364929A · kind A · utility
8Cited by
5References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1993 |
| Grant date | Nov 15, 1994 |
| Priority date | — |
| Expiry date | Jan 13, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2327/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed herein is a process for dissolving high melting polymers containing tetrafluoroethylene units at pressures greater than autogenous pressure, using selected halogenated solvents that are often not solvents at autogenous pressure. Also disclosed are the solutions resulting from this process. The solutions are useful for preparing fibers and paper-like webs from these polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.