Additive for rubber composition, additive composition for rubber composition, rubber composition and tire

   
   

An additive for a rubber composition consists essentially of an ester of (i) an aliphatic polyvalent carboxylic acid with (iii) a (poly)oxyalkylene derivative, and having at least one carboxyl group in its molecule, or an ester of (ii) an aromatic polyvalent carboxylic acid with (iii) a (poly)oxyalkylene derivative, and having at least one carboxyl group bonded to an aromatic ring in its molecule. And also, it relates to an additive composition, a rubber composition and a pneumatic tire using such an additive for a rubber composition.

Добавка для rubber состава состоит необходимо эстера (i) алифатической поливалентной карбоновой кислоты с (iii) а (производным poly)oxyalkylene, и иметь по крайней мере одну карбоксильную группу в своей молекуле, или эстере (ii) ароматичной поливалентной карбоновой кислоты с (iii) а (производным poly)oxyalkylene, и иметь по крайней мере одну карбоксильную группу скрепленную к ароматичному кольцу в своей молекуле. И также, она относит к аддитивному составу, rubber составу и пневматической автошине использующ такую добавку для rubber состава.

 
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