Composition for tread base and tire
A technology of tread base and composition, applied in the direction of tire tread/tread pattern, special tires, tire parts, etc., can solve problems such as low fuel consumption, and achieve the effect of improving fuel consumption and improving low
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[0017] The base tread composition of the present invention contains an elastomer component, silica, and a dicyclopentadiene-aromatic compound copolymer resin and / or a hydrogenated dicyclopentadiene-based resin. Accordingly, it is possible to improve the overall performance of low fuel consumption, breaking strength, and breaking elongation.
[0018] The above-mentioned composition for a base tread can obtain the above-mentioned effects, and although the reason for obtaining such an effect is not necessarily clear, it is presumed as follows.
[0019] In the conventional method of improving breaking strength (TB) and breaking elongation (EB), fuel efficiency deteriorated, but mixing dicyclopentadiene-aromatic compound copolymer resin and / or hydrogenated dicyclopentadiene-based resin When it is used, the viscosity of the composition tends to increase, and the shear force on the silica during the kneading process can be well exerted, which can improve the dispersibility of the sil...
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