GB859269A - Copolymers of acrylamide and vinyl aromatic sulfonates - Google Patents
Copolymers of acrylamide and vinyl aromatic sulfonatesInfo
- Publication number
- GB859269A GB859269A GB2299259A GB2299259A GB859269A GB 859269 A GB859269 A GB 859269A GB 2299259 A GB2299259 A GB 2299259A GB 2299259 A GB2299259 A GB 2299259A GB 859269 A GB859269 A GB 859269A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acrylamide
- sodium
- sulphonate
- copolymers
- per cent
- 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
- C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
- C08F20/52—Amides or imides
- C08F20/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F20/56—Acrylamide; Methacrylamide
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Copolymers of 99 to 90 mole per cent of acrylamide and 1 to 10 mole per cent of at least one compound selected from vinyl benzene sulphonic acid, vinyl benzyl sulphonic acid, water-soluble alkali and alkaline earth metal salts of said acids, and alkyl substitution products of said acids and salts having 1 or 2 alkyl radicals, each containing 1 to 3 carbon atoms, attached to the benzene nucleus, may be prepared by copolymerizing acrylamide with the acid or salt in aqueous solution at a pH of 3 to 9. The aqueous media may contain alcohols such as methyl alcohol, ethyl alcohol and isopropyl alcohol. The polymerization may be catalysed by soluble free-radical polymerization catalysts, e.g. sodium persulphate, potassium persulphate, ammonium persulphate, hydrogen peroxide and tertiary butyl hydroperoxide, or by ultraviolet light, X-rays, g -rays and high energy electrons. Traces of acrylamide peroxide normally present in the acrylamide may be sufficient to initiate polymerization in the presence of sodium sulphite. Examples describe the copolymerization of acrylamide with sodium vinyl benzyl sulphonate and sodium vinyl benzene sulphonate. The products may be used for flocculating suspensions of mineral solids, e.g. uranium ores.ALSO:Sodium vinyl benzylsulphonate may be prepared by adding vinylbenzyl chloride portionwise with agitation to an aqueous solution of sodium sulphite at room temperature. Unreacted vinylbenzyl chloride may be extracted with benzene and the sodium vinylbenzyl-sulphonate crystallised by chilling the aqueous solution.ALSO:A method of flocculating aqueous suspensions of finely divided mineral solids comprises admixing with the suspensions aqueous solutions of water-soluble high molecular weight copolymers of 99 to 90 mole per cent acrylamide and 1 to 10 mole per cent acrylamide and 1 to 10 mole per cent of at least one sulphonated vinyl aromatic compound selected from vinylbenzene sulphonic acid, vinylbenzyl sulphonic acid, water-soluble alkali and alkaline earth metal salts of said acids, and alkyl substitution products of said acids and salts having 1 or 2 alkyl radicals, each containing 1 to 3 carbon atoms, attached to the benzene nucleus. The flocculated material may be separated by decantation, filtration or centrifugation Examples describe the flocculation of aqueous slurries of acid-leached South African uranium ore using (6 and 8) acrylamide-sodium vinylbenzene sulphonate copolymers, (7) acrylamide-sodium vinylbenzyl sulphonate copolymers and, for comparison, polyacrylamide.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US570810A US2909508A (en) | 1956-03-12 | 1956-03-12 | Copolymers of acrylamide and vinyl aromatic sulfonates |
GB2299259A GB859269A (en) | 1959-07-03 | 1959-07-03 | Copolymers of acrylamide and vinyl aromatic sulfonates |
DED31091A DE1181914B (en) | 1959-07-03 | 1959-07-17 | Process for the production of mixed polymers from acrylic acid amide and vinyl aromatic compounds |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2299259A GB859269A (en) | 1959-07-03 | 1959-07-03 | Copolymers of acrylamide and vinyl aromatic sulfonates |
Publications (1)
Publication Number | Publication Date |
---|---|
GB859269A true GB859269A (en) | 1961-01-18 |
Family
ID=10188367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2299259A Expired GB859269A (en) | 1956-03-12 | 1959-07-03 | Copolymers of acrylamide and vinyl aromatic sulfonates |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB859269A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114212921A (en) * | 2021-12-17 | 2022-03-22 | 中新联科环境科技(安徽)有限公司 | Method for treating landfill leachate |
-
1959
- 1959-07-03 GB GB2299259A patent/GB859269A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114212921A (en) * | 2021-12-17 | 2022-03-22 | 中新联科环境科技(安徽)有限公司 | Method for treating landfill leachate |
CN114212921B (en) * | 2021-12-17 | 2023-08-29 | 中新联科环境科技(安徽)有限公司 | Treatment method of landfill leachate |
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