GB766840A - Improvements in or relating to production of perfluorochloroolefin polymers - Google Patents
Improvements in or relating to production of perfluorochloroolefin polymersInfo
- Publication number
- GB766840A GB766840A GB27513/54A GB2751354A GB766840A GB 766840 A GB766840 A GB 766840A GB 27513/54 A GB27513/54 A GB 27513/54A GB 2751354 A GB2751354 A GB 2751354A GB 766840 A GB766840 A GB 766840A
- Authority
- GB
- United Kingdom
- Prior art keywords
- monomer
- drying zone
- perfluorochloroolefin
- tubular drying
- trifluorochloroethylene
- 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
- C08F6/00—Post-polymerisation treatments
- C08F6/26—Treatment of polymers prepared in bulk also solid polymers or polymer melts
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A solid homopolymer of a 2 to 4 carbon atom perfluorochloroolefin or copolymer thereof with another fluorine-containing olefin is separated from the corresponding monomer by introducing a mixture of polymer and monomer produced by a polymerization process into a tubular drying zone under conditions such that liquid monomer is vaporized and solid polymer is discharged from the tubular drying zone in admixture with vaporous monomer and is recovered therefrom. The tubular drying zone is preferably maintained at a temperature between 60 DEG and 250 DEG C. and conditions adjusted so that the outlet velocity is above 50 feet per second and below 300 feet per second. The perfluorochloroolefin may be trifluorochloroethylene, difluorodichloroethylene, or 2,3-dichloroperfluorobutene (CF3CClCClCF3) and the fluorine-containing olefin may be perfluorobutadiene, vinylidene fluoride, difluoroethylene, trifluoroethylene, perfluorostyrene, perfluorocyclobutene or phenyl trifluoroethylene. A continuous polymerization process is described, using as catalyst trichloroacetyl, benzoyl, trifluoroacetyl, difluorochloroacetyl, chloroacetyl or dichlorofluoroacetyl peroxide.ALSO:Trifluorochloroethylene is prepared by a continuous process in which trifluorotrichloroethane is treated with a slurry of zinc, tin, manganese, magnesium or iron in a solvent such as methanol, ethanol, butanol, propanol, glycerol or dioxane.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US766840XA | 1953-10-30 | 1953-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB766840A true GB766840A (en) | 1957-01-23 |
Family
ID=22133591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27513/54A Expired GB766840A (en) | 1953-10-30 | 1954-09-23 | Improvements in or relating to production of perfluorochloroolefin polymers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB766840A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004044014A2 (en) * | 2002-11-08 | 2004-05-27 | E.I. Du Pont De Nemours And Company | Reaction of fluoropolymer melts |
| US6838545B2 (en) | 2002-11-08 | 2005-01-04 | E. I. Du Pont De Nemours And Company | Reaction of fluoropolymer melts |
-
1954
- 1954-09-23 GB GB27513/54A patent/GB766840A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004044014A2 (en) * | 2002-11-08 | 2004-05-27 | E.I. Du Pont De Nemours And Company | Reaction of fluoropolymer melts |
| WO2004044014A3 (en) * | 2002-11-08 | 2004-07-08 | Du Pont | Reaction of fluoropolymer melts |
| US6838545B2 (en) | 2002-11-08 | 2005-01-04 | E. I. Du Pont De Nemours And Company | Reaction of fluoropolymer melts |
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