Stereospecific synthetic rubber based on 1,3-butadiene and method of producing same

Abstract

Abstract A STEREOSPECIFIC SYNTHETIC RUBBER ON THE BASIS OF 1,3BUTADIENE, CHARACTERIZED IN THAT IT IS CIS-COPOLYMER OF 1,3-BUTADIENE WITH CONJUGATED CYCLIC DIENES HAVING FROM 5 TO 6 CARBON ATOMS IN THE CYCLE, THE CONTENT OF CYCLIC LINKS IN THE COPOLYMER CHAIN RANGING FROM 3 TO 20 MOL PERCENT. SAID RUBBER IS PRODUCED BY A METHOD, RESIDING IN THAT 1,3-BUTADIENE IS COPOLYMERIZED WITH CONIUGATED CYCLIC DIENES HAVING FROM 5 TO 6 CARBON ATOMS IN THE C CYCLE, WITH THE MOLAR RATIO OF THE MONOMERS BEING 95-75:5-25 RESPECTIVELY. THE PROCESS IS CARRIED OUT AT A TEMPERATURE RANGING FROM -15 TO +80*C., IN THE MEDIUM OF A HYDROCARBON SOLVENT, IN THE PRESENCE OF CATALYSTS OF $-ALLYL TYPE, THESE CATALYSTS BEING $-ALLYL COMPOUNDS OF NICKEL IN COMBINATION WITH ELECTRON-ACCEPTOR COMPOUNDS. SAID RUBBER EXHIBITS IMPROVED TECHNOLOGICAL PROPERTIES, EASILY BLENDS WITH INGREDIENTS OF A RUBBER COMPOUND, CAN BE EASILY PROCESSED INTO A VULCANIZATE, FEATURES AN INCREASED FREEZE RESISTANCE, AND CAN BE USED AT LOW TEMPERATURES, DOWN TO THE SECOND-ORDER-TRANSITION TEMPERATURE THEREOF (FROM -90 TO -100*C.).

Inventors

• 👤 S Beilin
• 👤 K Makovetsky
• 👤 B Dolgoplosk
• 👤 E Tinyakova
• 👤 V Krol
• 👤 E Khrennikova
• 👤 G Chernenko
• 👤 I Ostrovskaya

Bibliographic Details