GB1045611A - Process for production of tetrafluoroethylene polymer - Google Patents
Process for production of tetrafluoroethylene polymerInfo
- Publication number
- GB1045611A GB1045611A GB433464A GB433464A GB1045611A GB 1045611 A GB1045611 A GB 1045611A GB 433464 A GB433464 A GB 433464A GB 433464 A GB433464 A GB 433464A GB 1045611 A GB1045611 A GB 1045611A
- Authority
- GB
- United Kingdom
- Prior art keywords
- irradiation
- tetrafluoroethylene
- polymerized
- production
- cobalt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F14/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F14/18—Monomers containing fluorine
- C08F14/26—Tetrafluoroethene
Abstract
A process for the production of tetrafluoroethylene polymer comprises partially polymerizing tetrafluoroethylene by irradiation with ionizing radiation, then subjecting the partially polymerized tetrafluoroethylene to post-polymerization in condensed system at temperatures below 0 DEG C under non-irradiating conditions. The irradiation may be effected at temperatures below 0 DEG C., and the process may be effected batchwise or continuously, optionally in the presence of a solvent, e.g. chlorodifluoro methane, perfluoropropane and perfluorocyclobutane. The irradiation may be provided by an electron accelerator, a Van de Graff generator, cobalt 60, cerium144, X-rays and a -rays. Conversion in the first stage may be less than 30%. In examples tetrafluoroethylene is polymerized to 5% conversion by radiation from a cobalt 60 source and thereafter post-polymerized in the absence of irradiation. The products are compared with polymers obtained by continued irradiation and by a commercial catalytic process.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP546963 | 1963-02-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1045611A true GB1045611A (en) | 1966-10-12 |
Family
ID=11612084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB433464A Expired GB1045611A (en) | 1963-02-08 | 1964-01-31 | Process for production of tetrafluoroethylene polymer |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1045611A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006041512A1 (en) * | 2006-08-29 | 2008-03-20 | Leibniz-Institut Für Polymerforschung Dresden E.V. | Radical-free polytetrafluoroethylene (PTFE), e.g. useful for producing semifinished products, comprises PTFE particles having no detectable persistent peroxy radicals |
-
1964
- 1964-01-31 GB GB433464A patent/GB1045611A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006041512A1 (en) * | 2006-08-29 | 2008-03-20 | Leibniz-Institut Für Polymerforschung Dresden E.V. | Radical-free polytetrafluoroethylene (PTFE), e.g. useful for producing semifinished products, comprises PTFE particles having no detectable persistent peroxy radicals |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES232308A1 (en) | Linear polymers of improved mechanical and processing properties and methods for their production | |
| GB1074708A (en) | ª‡-perfluoro-p-xylylene polymers | |
| GB1099853A (en) | Process for producing modified propylene polymer | |
| SE7613662L (en) | POLYMERIZATION OF ALFA-OLEFINES | |
| GB818461A (en) | Polymer recovery process | |
| GB841263A (en) | Process for polymerizing lower olefines in a continuous manner | |
| GB1045611A (en) | Process for production of tetrafluoroethylene polymer | |
| GB1496347A (en) | Decomposition and reaction of polymers and/or oligomers | |
| ES294822A1 (en) | A method for the preparation of olefinic polymers (Machine-translation by Google Translate, not legally binding) | |
| GB1083915A (en) | Process for the polymerisation of lauro lactam | |
| GB593997A (en) | Process for the depolymerisation of tetrafluoroethylene polymers | |
| GB1361341A (en) | Method for the depolymerisation of polytetrafluoroethylene | |
| GB859330A (en) | Improvements in or relating to copolymerization process | |
| US3380982A (en) | Method for formation of three-dimensional structures in saturated carbon chain polymers | |
| US3096267A (en) | Radiation polymerization of vinyl acetate | |
| GB1018284A (en) | Polymers prepared from propylene and ethylene | |
| GB1045982A (en) | Process for preparing polydecanolactam of high molecular weight | |
| GB1108714A (en) | Polymerization of acrylonitrile | |
| GB723454A (en) | Improvements in or relating to the manufacture of hydroquinone | |
| FR2000038A1 (en) | Catalyst system for production of cis-1 4 polyisoprene | |
| GB994677A (en) | Polymerization of ethylene in the presence of ammonium halide | |
| GB900571A (en) | Improvements in and relating to polyvinyl compounds | |
| GB890913A (en) | Improved process for the polymerisation of alpha-olefins | |
| GB745058A (en) | Improvements in the polymerisation of monomeric vinyl compounds to unitary uniform grains | |
| GB890078A (en) | Process for polymerising propylene to linear high molecular weight polymers |