SU675056A1 - Method of obtaining anion exchange resins - Google Patents
Method of obtaining anion exchange resinsInfo
- Publication number
- SU675056A1 SU675056A1 SU772536014A SU2536014A SU675056A1 SU 675056 A1 SU675056 A1 SU 675056A1 SU 772536014 A SU772536014 A SU 772536014A SU 2536014 A SU2536014 A SU 2536014A SU 675056 A1 SU675056 A1 SU 675056A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- hours
- exchange resins
- anion exchange
- anion exchangers
- copolymer
- Prior art date
Links
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- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
Изобретение касаетс получени анионообменных смол, используемых в качестве сорбентов, Известен способ получени анионообменных смол путем аминировани сополимера винилбепзилхлорида с дивинилбензолом 1. Однако синтезированные аниониты термостабильны до 150°С. Целью изобретени вл етс повышение термической стабильности анионитов. . Это достигаетс тем, что сополимер предварительно обрабатывают раствором натриевой соли 2-меркаптобекзотиазола в количестве 2%. от массы сополимера. Процесс обработки сополимера провод т 1%ным раствором натриевой соли 2-меркаптобензотиазопа вдимётштформамиде при 30-40°С в течение 7-10 час. Соль ввод т в количестве 2% от массы сополимера. В результате получают аннониты, Термостабил ные до 300°С, со статической обменной емкость 0,1 н. раствору сол ной кислоты 4,4 мг экв/ Пример 1.В трехгорлую коЛбу, снабжен ную мешалкой и обратным холодильником, помещают 10 г сополимера винилбензилхлорида с дивинилбензолом и приливают диметилформамид дл предварительного набухани . Далее в реакционную колбу помешают 0,2 г натриевой соли 2-меркаптобензотиазола в 20 мл диметилформамида и перемешивают в течение 10 час при температуре 40С. Получе1шый продукт обрабатывают несколько раз диметилформамидом дл очистки от непрореагировавшего каптакса. Затем стабилизироват1Ь Й сополимер винилбензилхлорнда и дивннилбензола аминируют трехмольным избытком 20%-ного раствора триметиламина в течение 20 час при непрерывном перемешивании при температуре 40°С. Синтезированный таким образом стабилиэированный анионнт обрабатывают слабым раствором HCI дл удалени непрореагировавшего триметиламина и водой до нейтральной реакции, заливают 5%-ным и далее 10%-ным раствором HCI л перевода в С1-форму. Промывают водбй.до ейтральной реакции промывных вод и сушат в суцашьном шкафу. Выход - 13,5 г. Пример 2. В трехгорлую колбу, снабженную мешалкой и обратным холодильником, по , ;The invention relates to the preparation of anion exchange resins used as sorbents. A known method for the preparation of anion exchange resins by amination of a copolymer of vinyl bepsyl chloride with divinyl benzene. However, the synthesized anion exchangers are thermostable to 150 ° C. The aim of the invention is to increase the thermal stability of anion exchangers. . This is achieved by pretreating the copolymer with a solution of 2-mercaptobeczotiazole sodium salt in an amount of 2%. by weight of copolymer. The copolymer is treated with a 1% solution of 2-mercaptobenzothiazop sodium salt in the form of formamide at 30-40 ° C for 7-10 hours. Salt is introduced in an amount of 2% by weight of the copolymer. As a result, Annonites, Thermostable up to 300 ° С, with a static exchange capacity of 0.1 n. a solution of 4.4 mg eq / hydrochloric acid / Example 1. In a three-neck valve, equipped with a stirrer and reflux condenser, 10 g of a copolymer of vinyl benzyl chloride with divinyl benzene are placed and dimethylformamide is added to pre-swell. Next, 0.2 g of sodium salt of 2-mercaptobenzothiazole in 20 ml of dimethylformamide is stirred into the reaction flask and stirred for 10 hours at 40 ° C. The resulting product is treated several times with dimethylformamide to remove unreacted captax. Then stabilize the vinylbenzylchloride copolymer and divnylbenzene are aminated with a three molar excess of a 20% trimethylamine solution for 20 hours with continuous stirring at 40 ° C. The stabilized anionnt synthesized in this way is treated with a weak HCl solution to remove unreacted trimethylamine and water until neutral, poured with 5% and then with 10% HCl solution and converted to the C1 form. The water is washed with a wash solution and dried in a cupboard. Yield - 13.5 g. Example 2. In a three-neck flask equipped with a stirrer and reflux condenser;
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772536014A SU675056A1 (en) | 1977-10-20 | 1977-10-20 | Method of obtaining anion exchange resins |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772536014A SU675056A1 (en) | 1977-10-20 | 1977-10-20 | Method of obtaining anion exchange resins |
Publications (1)
Publication Number | Publication Date |
---|---|
SU675056A1 true SU675056A1 (en) | 1979-07-25 |
Family
ID=20729812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU772536014A SU675056A1 (en) | 1977-10-20 | 1977-10-20 | Method of obtaining anion exchange resins |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU675056A1 (en) |
-
1977
- 1977-10-20 SU SU772536014A patent/SU675056A1/en active
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