COLOUR POLYMER COMPOSITION Russian patent published in 2012 - IPC C08L9/00 C08L9/06 C08L23/16 C08K3/04 C08K3/06 C08K3/22 C08K3/34 C08K3/36 C08K5/09 C08K5/40 C08K5/44 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry and particularly to production of ozone-resistant rubber mixtures for making colour or white sidewalls of car and bicycle tyres, as well as for protective and decorative elements of sidewalls of truck and light-truck range of tyres. The colour polymer composition contains the following, wt %: isoprene rubber SKI-3 S or natural rubber-28.07-32.2; ethylene propylene triple rubber SKEPT-40 5.37-16.84; non-oil filled butadiene styrene rubber SKS-30ARK 11.23-16.1; curing agents: rhombic sulphur 1.12-1.62; sulphenamide TS 0.27-0.84; thiuram D 0.06-0.27; filler materials: wollastonite with a needlelike structure 10.73-22.459; titanium white 2.81-5.37; zinc white 2.81-5.37; white soot BS-120 11.23-21.46; auxiliary ingredients: phthalic anhydride 0.16-0.28; stearic acid 1.07-1.68; optional colouring pigment 0-0.56; mixture of fullerenes C₅₀-C₉₂ 0.005-0.011.

EFFECT: composition improves physical and mechanical properties and fatigue strength of tyre sidewalls, as well as wear-resistance and heat ageing resistance due to atmospheric factors and operation at high temperatures.

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