GB761327A - Process for the polymerisation or copolymerisation of polymerisable fluorine-containing compounds - Google Patents
Process for the polymerisation or copolymerisation of polymerisable fluorine-containing compoundsInfo
- Publication number
- GB761327A GB761327A GB32740/54A GB3274054A GB761327A GB 761327 A GB761327 A GB 761327A GB 32740/54 A GB32740/54 A GB 32740/54A GB 3274054 A GB3274054 A GB 3274054A GB 761327 A GB761327 A GB 761327A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- fluorine
- salt
- vinyl
- dichloro
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Polymers are made by polymerizing a fluorine-containing monomer alone or in admixture with another monomer in aqueous media in the presence of a chloro-fluorocarboxylic acid containing a chain of at least five carbon atoms or salt thereof as the dispersing agent, and a polymerization catalyst. Fluorine-containing polymers mentioned are trifluorochloroethylene, tetrafluoroethylene, vinyl fluoride, vinylidene fluoride, trifluoroethylene, 1 : 1-dichloro-2 : 2-difluoroethylene, 1 : 2-dichloro - 1 : 2 - difluorethylene, and 1 : 1 : 1-trifluoropropylene. Othe monomers specified are vinyl chloride, vinylidene chloride, esters of acrylic and methacrylic acids, vinyl acetate and vinyl propionate. The chlorofluorocarboxylic acid may be obtained by the oxidation of a chlorofluorocarbon oil with permanganate in a weakly alkaline medium. The oil may be obtained by cracking a chlorotrifluoroethylene polymer and may have a boiling range of 30 DEG to 170 DEG C. under 5 mms. mercury pressure. The catalyst may be a peroxy compound such as potassium persulphate or an alkali metal salt of peroxydisulphuric acid, mixed if desired with reducing agents such as sodium sulphite or bisulphite, or an alkali metal salt of formaldehyde-sulphoxylic acid or a dithionite and/or the salt of a metal having more than one valency state, e.g. iron, cobalt, copper, or nickel. The aqueous medium may contain buffers such as secondary sodium phosphate, borax, or acetates. The polymer may be recovered from the latex by coagulation techniques and dispersed in organic solvents such as esters of glycollic acid with acetone, methyl ethyl ketone, amyl alcohol or mesitylene. The latex may be used for coating and impregnating porous materials. Specification 758,419 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE330492X | 1953-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB761327A true GB761327A (en) | 1956-11-14 |
Family
ID=6190728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32740/54A Expired GB761327A (en) | 1953-11-11 | 1954-11-11 | Process for the polymerisation or copolymerisation of polymerisable fluorine-containing compounds |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH330492A (en) |
| FR (1) | FR1115720A (en) |
| GB (1) | GB761327A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5583190A (en) * | 1993-05-28 | 1996-12-10 | Ausimont S.P.A. | Polyvinylidenefluoride having high mechanical properties and high thermochemical stability and the preparation process thereof |
| EP1245594A1 (en) * | 2001-03-26 | 2002-10-02 | Asahi Glass Co., Ltd. | Process for producing a tetrafluoroethylene polymer excellent in strenght |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1109370B (en) * | 1958-02-14 | 1961-06-22 | Hoechst Ag | Process for the polymerization of fluorine-containing olefins |
| US3067323A (en) * | 1959-01-27 | 1962-12-04 | Thorn Electrical Ind Ltd | Supports for suspended ceilings |
-
1954
- 1954-11-09 CH CH330492D patent/CH330492A/en unknown
- 1954-11-10 FR FR1115720D patent/FR1115720A/en not_active Expired
- 1954-11-11 GB GB32740/54A patent/GB761327A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5583190A (en) * | 1993-05-28 | 1996-12-10 | Ausimont S.P.A. | Polyvinylidenefluoride having high mechanical properties and high thermochemical stability and the preparation process thereof |
| EP1245594A1 (en) * | 2001-03-26 | 2002-10-02 | Asahi Glass Co., Ltd. | Process for producing a tetrafluoroethylene polymer excellent in strenght |
| US6822060B2 (en) | 2001-03-26 | 2004-11-23 | Asahi Glass Company, Limited | Process for producing a tetrafluoroethylene polymer excellent in strength |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1115720A (en) | 1956-04-27 |
| CH330492A (en) | 1958-06-15 |
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