GB726925A - Improvements in cation-exchange resins - Google Patents
Improvements in cation-exchange resinsInfo
- Publication number
- GB726925A GB726925A GB1273952A GB1273952A GB726925A GB 726925 A GB726925 A GB 726925A GB 1273952 A GB1273952 A GB 1273952A GB 1273952 A GB1273952 A GB 1273952A GB 726925 A GB726925 A GB 726925A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ester
- halo
- acid
- groups
- methyl
- 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
- C08F8/00—Chemical modification by after-treatment
- C08F8/40—Introducing phosphorus atoms or phosphorus-containing groups
Landscapes
- Chemical & Material Sciences (AREA)
- General 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
Cation-exchange resins are made by introducing phosphonic acid groups into a halomethylated copolymer of a compound containing one double bond and a cross-linking agent, preferably in bead form, by reacting the halo-methyl groups with an ester or partial ester of phosphorous acid and hydrolysing the phosphonic ester groups. The copolymer may be formed from a monomer containing a halo-methyl group, e.g. p-chloromethyl styrene, or it may be after-treated with a halo-methyl ester in the presence of a Friedel-Crafts catalyst such as aluminium chloride in the presence of ethylene dichloride. Preferred copolymers are those of styrene and/or acenaphthalene and divinyl benzene. Suitable phosphorous esters are trimethyl and triethyl phosphites, sodium diethyl phosphite, potassium dimethyl phosphite and sodium and potassium dibutyl phosphites. Hydrolysis may be effected by heating with acid or alkali in aqueous or non-aqueous solution, e.g. concentrated hydrochloric acid and alcoholic potassium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1273952A GB726925A (en) | 1952-05-20 | 1952-05-20 | Improvements in cation-exchange resins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1273952A GB726925A (en) | 1952-05-20 | 1952-05-20 | Improvements in cation-exchange resins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB726925A true GB726925A (en) | 1955-03-23 |
Family
ID=10010216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1273952A Expired GB726925A (en) | 1952-05-20 | 1952-05-20 | Improvements in cation-exchange resins |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB726925A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3027226A (en) * | 1957-09-12 | 1962-03-27 | Abitibi Power & Paper Co | Recovery of base from waste liquor |
| US4324917A (en) * | 1980-08-28 | 1982-04-13 | Texaco Inc. | Preparation of polyalkylene polyamines |
| US4394524A (en) * | 1981-08-31 | 1983-07-19 | Air Products And Chemicals, Inc. | Preparation of polyalkylene polyamines from ammonia, alkyleneamine, and alkanolamine |
| US4894407A (en) * | 1983-08-26 | 1990-01-16 | University Of Utah | Composition for extracting gold and silver anions from alkaline solutions and processes for making same |
| CN116120561A (en) * | 2022-12-26 | 2023-05-16 | 宁波争光树脂有限公司 | Phosphoric acid resin and preparation method thereof |
-
1952
- 1952-05-20 GB GB1273952A patent/GB726925A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3027226A (en) * | 1957-09-12 | 1962-03-27 | Abitibi Power & Paper Co | Recovery of base from waste liquor |
| US4324917A (en) * | 1980-08-28 | 1982-04-13 | Texaco Inc. | Preparation of polyalkylene polyamines |
| US4394524A (en) * | 1981-08-31 | 1983-07-19 | Air Products And Chemicals, Inc. | Preparation of polyalkylene polyamines from ammonia, alkyleneamine, and alkanolamine |
| US4894407A (en) * | 1983-08-26 | 1990-01-16 | University Of Utah | Composition for extracting gold and silver anions from alkaline solutions and processes for making same |
| CN116120561A (en) * | 2022-12-26 | 2023-05-16 | 宁波争光树脂有限公司 | Phosphoric acid resin and preparation method thereof |
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