METHOD OF PRODUCING CAOUTCHOUC, A RUBBER COMPOSITION CONTAINING CAOUTCHOUC OBTAINED USING SAID METHOD, AS WELL AS USE OF A RUBBER COMPOSITION Russian patent published in 2019 - IPC C08F36/04 C08F136/04 C08F236/10 C08F112/04 C08F4/48 C08F4/50 C08L9/00 C08L9/06 C08L25/04 B60C1/00

Abstract RU 2709530 C1

FIELD: manufacturing technology.

SUBSTANCE: present invention relates to production of caoutchouc, as well as rubber based thereon. Described is a method of producing caoutchouc by anionic polymerisation of a conjugated diene and/or copolymerisation of a conjugated diene and a vinyl aromatic compound in an organic solvent medium in the presence of an electron donor and lithium organozincate of general formula R₄ZnLi₂as an initiator. Electron donor used is 2,2-bis(2-oxolanyl)propane (ditetrahydrofurylpropane, DTHFP) in a hydrocarbon solvent and an inert medium. Invention also relates to rubber obtained using said method and to rubber compositions containing said caoutchouc.

EFFECT: improved hysteresis characteristics of caoutchouc based rubbers.

13 cl, 2 dwg, 4 tbl, 7 ex

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RU 2 709 530 C1

Authors

Averkov Aleksej Mikhajlovich

Turenko Svetlana Viktorovna

Dates

2019-12-18—Published

2016-07-22—Filed