RUBBER MIXTURE PREPARATION METHOD Russian patent published in 2010 - IPC C08J3/22 C08L9/06 

FIELD: chemistry.

SUBSTANCE: preparation method is realised in a rotary rubber mixer at constant rotary speed and control of duration of mixing based on temperature which increases during mixing and must not exceed temperature at which the vulcanising group begins to take effect. Butadiene-methylstyrene rubber is mixed in form of blocks containing a liquid softening agent and a homogeneous powdered mixture, preliminarily obtained from accelerators, dispersant, activator, technical carbon and sulphur by mixing in a separate mixer.

EFFECT: shorter duration of preparing a rubber mixture in a rotary rubber mixer with low probability of premature vulcanisation and improved working conditions.

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