Macronet polystyrene structures for ionites and method of producing same

Abstract

Abstract MACRONET POLYSTYRENE STRUCTURES FOR IONITES, CHARACTERIZED IN THAT THEY CONSISTS OF CROSS-LINKED POLYSTYRENE OR CROSS-LINKED COPOLYMERS OF STYRENE WITH DIVINYLBENZENE IN WHICH THE CONTENT OF THE DIVINYLBENZENE IN THE COPOLYMERS IS UP TO 1 MOLE PERCENT, AND THE LINKING BRIDGES BETWEEN THE BENZENE RINGS OF THE POLYSTYRENE CHAINS ARE AS FOLLOWS R-(1,4-PHENYLENE)N-R WHERE R=CH2, CO, N=1,2,3 THE PROPOSED MACRONET STRUCTURES CAN BE PRODUCED BY USING A METHOD PROVIDING FOR TREATING OF POLYSTYRENE OR GRANULAR COPOLYMERS OF STYRENE WITH DIVINYLBENZENE, THE LATTER BEING INCLUDED IN THE COPOLYMERS IN AN AMOUNT OF UP TO 1 MOLE PERCENT, BY A CROSS-LINKING AGENT IN A MEDIUM OF AN ORGANIC SOLVENT IN THE PRESENCE OF THE FRIEDELCRAFTS CATALYST. THE CROSS-LINKING AGENT IS COMPOSED OF BISFUNCTIONAL COMPOUNDS OF THE GENERAL FORMULA R-(1,4-PHENYLENE)N-R WHERE R=CH2CL, COCL, N=1,2,3 THESE STRUCTURES FEATURE A HIGH MECHANICAL STRENGTH AND HAVE ADEQUATELY LONG, RIGID, CHEMICALLY STABLE BRIDGES REGULARLY ARRANGED BETWEEN THE POLYSTYRENE CHAINS AND CAPABLE OF CARRYING THE SAME IONOGENIC GROUPS AS THOSE CARRIED BY THE POLYSTYRENE CHAINS. THE IONITES BASED ON THESE STRUCTURES HAVE A HIGH EXCHANGE CAPACITY (E.G. UP TO 5.35 MEQ./G. FOR SULPHOCATIONITE), HIGH OSMOTIC STABILITY AND HIGH KINETIC CHARACTERISTICS.

Inventors

• 👤 V Davankov
• 👤 V Rogozhin
• 👤 M Tsjurupa

Bibliographic Details