GB726918A - Improvements relating to cation-exchange resins and processes - Google Patents
Improvements relating to cation-exchange resins and processesInfo
- Publication number
- GB726918A GB726918A GB830852A GB830852A GB726918A GB 726918 A GB726918 A GB 726918A GB 830852 A GB830852 A GB 830852A GB 830852 A GB830852 A GB 830852A GB 726918 A GB726918 A GB 726918A
- Authority
- GB
- United Kingdom
- Prior art keywords
- groups
- hydrolysis
- cation
- exchange resins
- effected
- 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 containing phosphonic acid groups are made by introducing phosphorus halide groups into a copolymer of an aromatic compound containing one double bond and a cross-linking agent, preferably in bead form, by means of a Friedel-Crafts reaction and hydrolyzing these groups, which are oxidized before, during or after hydrolysis. Preferred copolymers are those of styrene or acenaphthylene or their derivatives and divinyl benzene. They may be treated with phosphorus trichloride in the presence of anhydrous aluminium chloride, if desired in the presence of ethylene dichloride, simultaneous hydrolysis and oxidation being effected by boiling with sodium hydroxide. Oxcidation may also be effected with chlorine before, or with nitric acid after, hydrolysis. Sulphonic acid groups may also be introduced into the copolymer by treatment with sulphuric acid before or after introduction of the phosphonic acid groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB830852A GB726918A (en) | 1952-04-01 | 1952-04-01 | Improvements relating to cation-exchange resins and processes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB830852A GB726918A (en) | 1952-04-01 | 1952-04-01 | Improvements relating to cation-exchange resins and processes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB726918A true GB726918A (en) | 1955-03-23 |
Family
ID=9850038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB830852A Expired GB726918A (en) | 1952-04-01 | 1952-04-01 | Improvements relating to cation-exchange resins and processes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB726918A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3105164A (en) * | 1960-02-12 | 1963-09-24 | Gendron Freres S A | Electric motors of asynchronous or eddy-current |
-
1952
- 1952-04-01 GB GB830852A patent/GB726918A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3105164A (en) * | 1960-02-12 | 1963-09-24 | Gendron Freres S A | Electric motors of asynchronous or eddy-current |
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