GB918153A - Process for polymerizing fluorine-containing olefines - Google Patents
Process for polymerizing fluorine-containing olefinesInfo
- Publication number
- GB918153A GB918153A GB531959A GB531959A GB918153A GB 918153 A GB918153 A GB 918153A GB 531959 A GB531959 A GB 531959A GB 531959 A GB531959 A GB 531959A GB 918153 A GB918153 A GB 918153A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquor
- water
- iron
- copper
- butyl
- 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)
- Polymerization Catalysts (AREA)
Abstract
The suspension polymerization of fluorine containing olefines is carried out in the absence of oxygen and in the presence of 0,004 to 0,0001% by weight of the liquor of at least one anionic surface-active perfluoro- or perfluorochlorocarboxylic acid and/or a water-soluble salt or mixture thereof. The process is applicable to the homopolymerization of tetrafluoroethylene or trifluorochloroethylene and to their copolymerization with each other or with vinylidene fluoride and may be effected continuously or discontinuously. The final ratio of liquor to polymer is preferably between 1 and 6 to 1. The pH of the liquor may be between 2,5 and 12, preferably just over 7, and may be adjusted by ammonia, a phosphate or borax as buffer. Suitable catalysts are organic and inorganic peroxidic compounds, e.g. persulphates, percarbonate, perborates, hydroperoxides such as t-butyl or t-aryl-hydroperoxide, or peracteates such as butyl peracetate in amounts of 0,001 to 5 wt. per cent of the monomer; redox catalysts such as bisulphites and thiosulphates; and multivalent metals, e.g. iron or copper or their water-soluble salts, e.g. iron sulphate, citrate or tartate and copper sulphate or chloride. Preferred reaction conditions are 2 to 100 atmospheres gauge and 10 DEG to 150 DEG C. Specification 795,513 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF25042A DE1109370B (en) | 1958-02-14 | 1958-02-14 | Process for the polymerization of fluorine-containing olefins |
Publications (1)
Publication Number | Publication Date |
---|---|
GB918153A true GB918153A (en) | 1963-02-13 |
Family
ID=7091467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB531959A Expired GB918153A (en) | 1958-02-14 | 1959-02-16 | Process for polymerizing fluorine-containing olefines |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1109370B (en) |
FR (1) | FR1225109A (en) |
GB (1) | GB918153A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2580650B2 (en) * | 1987-12-15 | 1997-02-12 | ダイキン工業株式会社 | Emulsion polymerization method |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE916470C (en) * | 1949-07-27 | 1954-08-12 | Du Pont | Process for the preparation of aqueous colloidal dispersions of polymers |
CH330492A (en) * | 1953-11-11 | 1958-06-15 | Hoechst Ag | Process for the polymerization or copolymerization of polymerizable, fluorine-containing compounds in an aqueous phase |
-
1958
- 1958-02-14 DE DEF25042A patent/DE1109370B/en active Pending
-
1959
- 1959-02-14 FR FR786872A patent/FR1225109A/en not_active Expired
- 1959-02-16 GB GB531959A patent/GB918153A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1109370B (en) | 1961-06-22 |
FR1225109A (en) | 1960-06-29 |
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