SU138372A1 - The method of obtaining a weak acid cation exchange resin - Google Patents
The method of obtaining a weak acid cation exchange resinInfo
- Publication number
- SU138372A1 SU138372A1 SU682786A SU682786A SU138372A1 SU 138372 A1 SU138372 A1 SU 138372A1 SU 682786 A SU682786 A SU 682786A SU 682786 A SU682786 A SU 682786A SU 138372 A1 SU138372 A1 SU 138372A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- obtaining
- exchange resin
- cation exchange
- weak acid
- acid cation
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Description
Ионообменные смолы известны и наход т широкое применение в химической промышленности, дл ум гчени воды в парокотельных установках и др. процессах. Способы получени ионообменных смол на основе стирола и дивинилбензола, акриловой и метакриловой кислот, акрилрнитрила и параформа и др. описаны в патентной и научно-технической литературе и наход т широкое применение на практике.Ion exchange resins are known and are widely used in the chemical industry, for water softening in steam boiler plants and other processes. Methods for the preparation of styrene and divinylbenzene-based ion-exchange resins, acrylic and methacrylic acids, acryl nitrile and paraform, etc., are described in the patent and scientific literature and are widely used in practice.
Расширение ассортимента ионообменных смол, особенно смол, обладаюш;их повышенной избирательной способностью к большим органическим ионам, представл ет значительный практический интерес.Expanding the range of ion exchange resins, especially resins, has a higher selective capacity for large organic ions, which is of considerable practical interest.
Предложенный новый способ получени слабокислотной катионообменной смолы заключаетс в том, что, с целью повышени избирательной способности смолы к крупным органическим ионам, поликонденсации подвергают п-хлорфенол и феноксиуксусную кислоту с параформом , вз тые в эквимолекул рных количествах, при 100° в присутствии серной кислоты.The proposed new method for producing a weakly acidic cation-exchange resin is that, in order to increase the selective ability of a resin to large organic ions, p-chlorophenol and phenoxyacetic acid with paraform are taken to polycondensate, taken in equimolecular amounts, at 100 ° in the presence of sulfuric acid.
Получаемые в результате описанной реакции трехмерные полимеры представл ют собой слабокислотные нониты, содержащие нар ду с карбоксильными группами фенольные гидроксилы.The three-dimensional polymers obtained as a result of the described reaction are weakly acidic nonitites containing phenolic hydroxyls along with carboxyl groups.
Как было установлено, эти смолы обладают повышенной избирательностью к крупным органическим ионам по сравнению с карбоксильными катионитами известных марок (КФУ, КБ-4 и КМТ).It was established that these resins have an increased selectivity for large organic ions compared to carboxyl cation exchangers of well-known brands (KFU, KB-4 and KMT).
Пример. Смесь 100 г феноксиуксусной кислоты и 84,5 г п-хлорфенола нагревают до 80°. В полученный расплав при перемешивании ввод т 3,2 г концентрированной H2SO4, а затем постепенно 33,4 г параформа так, чтобы температура реакционной смеси не превышала 95°. После введени всего параформа (33,4 г) нагревание смеси продолжают при слабом кипении до образовани .смолы, затвердевающей при комнатной температуре.Example. A mixture of 100 g of phenoxyacetic acid and 84.5 g of p-chlorophenol is heated to 80 °. Under stirring, 3.2 g of concentrated H2SO4 are introduced into the resulting melt, and then, 33.4 g of paraform are gradually added so that the temperature of the reaction mixture does not exceed 95 °. After all the paraform (33.4 g) has been injected, the mixture is heated at low boiling until a resin forms which hardens at room temperature.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU682786A SU138372A1 (en) | 1960-10-20 | 1960-10-20 | The method of obtaining a weak acid cation exchange resin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU682786A SU138372A1 (en) | 1960-10-20 | 1960-10-20 | The method of obtaining a weak acid cation exchange resin |
Publications (1)
Publication Number | Publication Date |
---|---|
SU138372A1 true SU138372A1 (en) | 1960-11-30 |
Family
ID=48294525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU682786A SU138372A1 (en) | 1960-10-20 | 1960-10-20 | The method of obtaining a weak acid cation exchange resin |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU138372A1 (en) |
-
1960
- 1960-10-20 SU SU682786A patent/SU138372A1/en active
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