SU138372A1 - The method of obtaining a weak acid cation exchange resin - Google Patents

The method of obtaining a weak acid cation exchange resin

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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
Application number
SU682786A
Other languages
Russian (ru)
Inventor
А.А. Ваншейдт
Н.Н. Кузнецова
Original Assignee
А.А. Ваншейдт
Н.Н. Кузнецова
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by А.А. Ваншейдт, Н.Н. Кузнецова filed Critical А.А. Ваншейдт
Priority to SU682786A priority Critical patent/SU138372A1/en
Application granted granted Critical
Publication of SU138372A1 publication Critical patent/SU138372A1/en

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  • 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.

SU682786A 1960-10-20 1960-10-20 The method of obtaining a weak acid cation exchange resin SU138372A1 (en)

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

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Family Applications (1)

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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)

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