ELASTOMER COMPOSITIONS AND THEIR USE IN AIR BLADDER, SUCH AS INNER LINING OF TYRE OR PNEUMATIC TYRE TUBE Russian patent published in 2008 - IPC B60C1/00 B60C5/14 C08J3/24 C08L23/28 C08K13/02 C08K3/04 C08K3/06 C08K3/22 C08K5/09 

FIELD: chemistry.

SUBSTANCE: invention pertains to compositions of ternary copolymers on an isobutylene base and can be used in tyres, in particular in motor car components, such as protectors, inner lining of tyres, air bladders and tubes. The vulcanised elastomer composition contains halogenated ternary copolymer links from C₄ to C₈ derived from iso-olefin, links from C₄ to C₁₄ derived from multi-olefin and links derived from p-alkylstyrol. The composition is vulcanised in the presence of a sulphur vulcanising group. The value of adhesion to butadiene-styrene rubber of the vulcanising composition at 100°C is more than 70 N/mm. The composition also optionally contains filler and/or extra rubber. The suitable fillers are modified carbon black, carbon black, silicon dioxide, aluminium oxide, calcium carbonate, clay, mica, talc, titanium dioxide, starch, wood powder and their combination.

EFFECT: improved adhesion to the frame, elasticity with retention of impermeability to air.

52 cl, 1 dwg, 8 tbl