FIELD: chemistry.
SUBSTANCE: rubber mixture for tyres contains (B): 5-50 pts.wt silicon dioxide per 100 pts.wt (A), containing (a): 10-60 wt % butadiene rubber containing 2.5-20 wt % 1,2-syndiotactic polybutadiene crystals, (b): 5-60 wt % modified diene rubber, (c): 20-75 wt % diene rubber different from (a) and (b), and sulphur. Content of vinyl in the modified butadiene rubber (b) is not higher than 35 wt %.
EFFECT: rubber mixture for tyres has low heat release and high crack resistance.
3 cl, 2 dwg, 2 tbl, 17 ex
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|
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|
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|
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|
RU2520491C2 |
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|
RU2521029C2 |
