POLYMER BASED ON CONJUGATED DIENE, METHOD FOR PRODUCING POLYMER BASED ON CONJUGATED DIENE, POLYMER COMPOSITION BASED ON CONJUGATED DIENE AND RUBBER COMPOSITION Russian patent published in 2023 - IPC C08L9/00 B60C1/00 C08F36/04 C08K3/13 

Abstract RU 2805113 C1

FIELD: polymers.

SUBSTANCE: polymers based on conjugated diene and rubber compositions based on them. Conjugated diene polymer subjected to a coupling reaction is provided for use in a rubber composition having a Mooney viscosity measured at 100°C, in the range from 40 or more to 170 or less and measured at 100°C a Mooney stress relaxation of 0.35 or less, and characterized by a branching number (Bn) measured according to light scattering measurement using the GPC method with a viscosity detector of 8 or more. A method for producing said polymer, a composition based on it for use in a rubber composition, and a rubber composition are also proposed.

EFFECT: proposed polymer is characterized by excellent processing capability of the vulcanizate obtained from it, as well as abrasion resistance and fracture strength of the resulting material.

14 cl, 1 dwg, 6 tbl, 60 ex

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RU 2 805 113 C1

Authors

Sekikawa, Shinichi

Hisamura, Kenta

Tobo, Shuri

Sumitani, Shogo

Kyo, Miki

Dates

2023-10-11Published

2020-08-26Filed