GB1277577A - Process for the production of water-soluble acrylic polymers - Google Patents
Process for the production of water-soluble acrylic polymersInfo
- Publication number
- GB1277577A GB1277577A GB3075868A GB3075868A GB1277577A GB 1277577 A GB1277577 A GB 1277577A GB 3075868 A GB3075868 A GB 3075868A GB 3075868 A GB3075868 A GB 3075868A GB 1277577 A GB1277577 A GB 1277577A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- monomer
- sodium
- aqueous solution
- liquid
- 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
- C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F20/62—Monocarboxylic acids having ten or more carbon atoms; Derivatives thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Graft Or Block Polymers (AREA)
- Polymerization Catalysts (AREA)
Abstract
1277577 Preparing water-soluble acrylic polymers IMPERIAL CHEMICAL INDUSTRIES Ltd 18 Sept 1969 [27 June 1968] 30758/68 Heading C3P Water-soluble polymers of acryilc acid or a substituted or functional derivative thereof are prepared in substantially dry form by (a) forming an aqueous solution of the monomer and initiating polymerization, (b) adding a waterimmiscible liquid which is capable of forming an azeotrope with water and is a non-solvent for the monomer or the resultant polymer, the liquid being added whilst the aqueous solution is still fluid, (c) dispersing the aqueous solution throughout the liquid and maintaining the dispersion until polymerization is substantially complete, and (d) thereafter heating the mixture to the boil and removing water by azeotropic distillation until not more than 5% by weight of water is left in the polymer. Suitable derivatives of acrylic acid include alkali metal salts, acrylamide, methacrylic acid and methacrylamide. The monomer may be copolymerized with a monomer that, by itself, forms a water-insoluble homopolymer, e.g. acrylonitrile, methyl acrylate, vinyl acetate or vinyl chloride, in proportions that provide water-soluble copolymers. Initiators specified are potassium persulphate/ sodium bisulphite, ammonium persulphate/ copper sulphate or sodium metabisulphite, and hydrogen peroxide/ferrous salt redox systems. Liquids which may be added in step (b) include aliphatic and aromatic hydrocarbons and chlorinated derivatives thereof. A dispersing agent may be used in step (c), e.g. cellulose ethers, soya lecithin, hexadecyl sodium phthalate, sorbitan monooleate or monostearate, sodium cetyl/stearyl phthalate, ethylene oxide/ fatty acid amide condensates, Fuller's earth, talc, bentonite, calcium or magnesium carbonate, calcium phosphate or sodium sulphate; these prevent particles of the polymer coalescing during the drying step (d). In some examples polyacrylamide is produced in which some of the amide groups have been hydrolysed with caustic soda.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3075868A GB1277577A (en) | 1968-06-27 | 1968-06-27 | Process for the production of water-soluble acrylic polymers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3075868A GB1277577A (en) | 1968-06-27 | 1968-06-27 | Process for the production of water-soluble acrylic polymers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1277577A true GB1277577A (en) | 1972-06-14 |
Family
ID=10312678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3075868A Expired GB1277577A (en) | 1968-06-27 | 1968-06-27 | Process for the production of water-soluble acrylic polymers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1277577A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4052353A (en) | 1974-01-02 | 1977-10-04 | Scanley Clyde S | Dispersions of water soluble polymers in oil |
| US4090992A (en) | 1975-09-15 | 1978-05-23 | Drew Chemical Corp. | Dispersions of water soluble polymers in oil |
| US4374216A (en) | 1981-12-09 | 1983-02-15 | Celanese Corporation | Stable high solids water-in-oil slurry dispersion composition |
| US4435528A (en) | 1981-12-21 | 1984-03-06 | The Dow Chemical Company | Concentrated emulsions of water-soluble polymers |
| US4645568A (en) * | 1984-07-14 | 1987-02-24 | Basf Aktiengesellschaft | Preparation of concentrated, stable water-in-oil emulsions of water-soluble or water-swellable polymers |
| US4798888A (en) * | 1984-10-19 | 1989-01-17 | Allied Colloids Ltd. | Dry polymers |
| CN117463305A (en) * | 2023-12-27 | 2024-01-30 | 西安益维普泰环保股份有限公司 | Deep defluorinating agent and preparation method thereof |
-
1968
- 1968-06-27 GB GB3075868A patent/GB1277577A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4052353A (en) | 1974-01-02 | 1977-10-04 | Scanley Clyde S | Dispersions of water soluble polymers in oil |
| US4090992A (en) | 1975-09-15 | 1978-05-23 | Drew Chemical Corp. | Dispersions of water soluble polymers in oil |
| US4374216A (en) | 1981-12-09 | 1983-02-15 | Celanese Corporation | Stable high solids water-in-oil slurry dispersion composition |
| US4435528A (en) | 1981-12-21 | 1984-03-06 | The Dow Chemical Company | Concentrated emulsions of water-soluble polymers |
| US4645568A (en) * | 1984-07-14 | 1987-02-24 | Basf Aktiengesellschaft | Preparation of concentrated, stable water-in-oil emulsions of water-soluble or water-swellable polymers |
| US4798888A (en) * | 1984-10-19 | 1989-01-17 | Allied Colloids Ltd. | Dry polymers |
| CN117463305A (en) * | 2023-12-27 | 2024-01-30 | 西安益维普泰环保股份有限公司 | Deep defluorinating agent and preparation method thereof |
| CN117463305B (en) * | 2023-12-27 | 2024-04-02 | 西安益维普泰环保股份有限公司 | Deep defluorinating agent and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |