ELASTOMERIC POLYMERS MODIFIED ON CHAIN ENDS BY SILANE SULPHIDE Russian patent published in 2011 - IPC C08L9/00 C08L9/06 C08C19/44 C08F8/34 C08F8/42 B60C1/00 

FIELD: chemistry.

SUBSTANCE: polymer, whose chain ends are modified, contains a product of reacting a living anionic elastomeric polymer and a silane sulphide modifier of formula: (RO)_x(R)_ySi-R'-S-SiR³. The invention also relates to a vulcanised composition based on the elastomeric polymer and a method of preparing said composition. The method involves combining filler, vulcanising agent, elastomeric polymer modified on chain ends and vulcanisation of the elastomeric polymer composition. The composition is used to make articles such as pneumatic tyres, tyre protectors, belts and suchlike.

EFFECT: preserving good technological properties and good balance of physical and mechanical properties, including wear resistance, breaking strength, apparent tensile stress and breaking elongation.

23 cl, 9 tbl, 19 ex