Method for improving coupling efficiency of solution polymerized styrene-butadiene rubber

The invention discloses a method for improving the coupling efficiency of solution polymerized styrene-butadiene rubber. The method includes: under anionic polymerization conditions, in the presence of an organic lithium initiator and a structure regulator, polymerizing styrene and butadiene in a so...

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Bibliographische Detailangaben
Hauptverfasser:	YANG HONGYOU, WANG SHICHAO, ZHOU WEIPIN, XU WEI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
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Beschreibung
Zusammenfassung:	The invention discloses a method for improving the coupling efficiency of solution polymerized styrene-butadiene rubber. The method includes: under anionic polymerization conditions, in the presence of an organic lithium initiator and a structure regulator, polymerizing styrene and butadiene in a solvent, and within 2-15min after the polymerization reaction reaches a peak temperature, adding a coupling agent to conduct coupling. Specifically, the structure regulator is a compound with a structure shown as formula (I), and in the formula (I), R1 is alkyl of C1-C10. The method provided by the invention can regulate the coupling efficiency of the solution polymerized styrene-butadiene rubber and improve the coupling efficiency of the dissolved styrene butadiene rubber. (formula I).