METHOD OF PRODUCING SYNTHETIC RUBBER Russian patent published in 2009 - IPC C08F136/04 

FIELD: chemistry.

SUBSTANCE: invention relates to rubber synthesis technology and can be used in the petrochemical industry. The method involves (co)polymerisation of olefin and/or diene hydrocarbons in a solution of paraffin and/or olefin type hydrocarbon solvent in the presence of a catalyst, deactivation of the catalyst and stabilisation of the polymer using an antioxidant in the presence or absence of methanol with a mixture of antioxidant, amine and/or phenol type or mixtures of their alkyl derivatives, - and synthetic fatty acid or C₁₂-C₂₀ fraction of synthetic fatty acids, introduced in a mixed hydrocarbon solvent, containing 0.05 to 40.0 wt % antioxidant, aromatic solvent and (co)polymerisation solvent. Synthetic fatty acid or C₁₂-C₂₀ fraction of synthetic fatty acids is added in amount ranging from 5 to 150 wt % monomer (co)polymerisation catalyst. Methanol is taken in amount of 0.25 to 1.50 mol/mol catalyst. Deactivation and stabilisation processes are carried out with intense stirring of the polymer solution and mixture of antioxidant, synthetic fatty acid or C₁₂-C₂₀ fraction of synthetic fatty acids, introduced in mixed hydrocarbon solvent in a non-volume mixer with rotational frequency of the stirring rod of 500-750 min^-1. Deactivated and stabilised polymer solution is then kept for 0.5 to 1.0 h before washing and homogenisation.

EFFECT: use of the invention allows for reducing power consumption and improving quality of obtained rubber.

4 cl, 1 dwg, 9 ex, 4 tbl