GB574449A - Polymerisation of vinyl organic esters - Google Patents
Polymerisation of vinyl organic estersInfo
- Publication number
- GB574449A GB574449A GB1298341A GB1298341A GB574449A GB 574449 A GB574449 A GB 574449A GB 1298341 A GB1298341 A GB 1298341A GB 1298341 A GB1298341 A GB 1298341A GB 574449 A GB574449 A GB 574449A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sodium
- specified
- water
- soluble
- vinyl
- 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
- C08F18/00—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 an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid
- C08F18/02—Esters of monocarboxylic acids
- C08F18/04—Vinyl esters
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)
- Polymerisation Methods In General (AREA)
Abstract
Vinyl organic esters alone or together with a minor proportion of one or more other specified polymerizable compounds are polymerized in aqueous media in the presence of a water-soluble persulphate and a water-soluble salt of an oxyacid of sulphur with reducing properties. Specified other polymerizable compounds are other polymerizable compounds containing the group <FORM:0574449/IV/1> , e.g. vinyl chloride, unsymmetrical dichlorethylene, styrene and esters (other than vinyl esters), nitriles and amides of acrylic, methacrylic, fumaric and maleic acids. The vinyl organic esters are derived from monocarboxylic acids, specified are formic, acetic, propionic, butyric, lauric, benzoic, methacrylic and monochloracetic acids. Specified persulphates are the ammonium, sodium and potassium salts of peroxydisulphuric acid (J.C.S. 1940, pp. 1408-9), and conveniently 4 per cent based on the aqueous medium is taken. Specified salts of sulphur oxyacids are sulphites, hydrosulphites, bisulphites and thiosulphates, particularly the sodium salts; addition compounds with aldehydes and ketones may also be used, e.g. sodium formaldehyde sulphoxylate. The amount of the reducing agent used is such that there is present both persulphate and reducing agent throughout a substantial proportion of the polymerization. The polymerizable material is dispersed and/or dissolved in the aqueous medium, which is preferably weakly alkaline. Emulsifying agents may be used; specified are soaps, water-soluble salts of sulphonated animal and vegetable fats and oils, water-soluble esters of fatty alcohols and water-soluble colloidal materials, e.g. cellulose ethers. Preferably the polymerization is carried out in a closed vessel or one from which the air has been displaced by an inert gas, e.g. nitrogen, carbon dioxide. In example vinyl acetate is polymerized in an aqueous dispersion containing sodium bicarbonate, ammonium persulphate, the sodium salt of sulphated sperm oil alcohols and sodium (1) hydrosulphite, (2) bisulphite, ((5) without sodium bicarbonate), (3) sulphite and (11) thiosulphate, in (6) the dispersion contains ammonium persulphate, sodium hydrosulphite and methyl ethyl cellulose, and in (7) polymerization in ethanol-water solution is carried out. Interpolymers of vinyl acetate and (8) vinyl chloride, (9) methyl methacrylate and (10) acrylonitrile are also described.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1298341A GB574449A (en) | 1941-10-08 | 1941-10-08 | Polymerisation of vinyl organic esters |
| FR914737D FR914737A (en) | 1941-10-08 | 1945-09-22 | Polymerization of esters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1298341A GB574449A (en) | 1941-10-08 | 1941-10-08 | Polymerisation of vinyl organic esters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB574449A true GB574449A (en) | 1946-01-07 |
Family
ID=10014675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1298341A Expired GB574449A (en) | 1941-10-08 | 1941-10-08 | Polymerisation of vinyl organic esters |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR914737A (en) |
| GB (1) | GB574449A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1042754A (en) * | 1962-06-19 |
-
1941
- 1941-10-08 GB GB1298341A patent/GB574449A/en not_active Expired
-
1945
- 1945-09-22 FR FR914737D patent/FR914737A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR914737A (en) | 1946-10-16 |
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