METHOD OF OBTAINING ELASTOMER HAVING FUNCTIONAL GROUPS ALONG CHAIN, AND RUBBER COMPOSITION Russian patent published in 2008 - IPC C08C19/00 C08L9/06 C08K5/18 C08K3/36 B60C11/00 B60C1/00 

FIELD: chemistry.

SUBSTANCE: claimed invention relates to method of obtaining inoculated diene elastomer, containing functional groups along chain, rubber composition, containing said enoculated elastomer and in sewn state possessing especially improved hysteresis characteristics. Described is method of obtaining inoculated diene elastomer, containing along its chain hydroxyl, carbonyl groups, groups of simple ether, amine, nitrile or silane groups, including carrying out reaction of radical inoculation, which is carried out in solution or in absence of solvent using reagent of mercaptane type, and which is intended for inoculation of said groups on chain of initial elastomer, which is different as to the way how stage of processing with antioxidant is carried out before conducting said reaction of radical inoculation by means of antioxidant, which contains, at least, one functional group of aromatic amine, used in amount from 0.2 to 1.0 weight fractions per a hundred fractions of initial diene elastomer. Also described are inoculated diene elastomer, sewable or sewn rubber composition, suitable for being included into tyre protector structure, method of obtaining said sewable composition, tyre protector, and tyre, characterised by lower resistance to rolling.

EFFECT: production of diene elastomer, characterised by macrostructure after inoculation, identical to initial elastomer structure, rubber composition which demonstrates lower loss at hysteresis in sewn state.

25 cl, 13 tbl, 4 ex