Polymer ready for introduction into kneading machine

Abstract

Provided are a polymer ready for introduction into a kneading machine which is milled with good milling efficiency in a kneading machine and which provides a kneaded mixture with excellent filler dispersion, and a rubber composition and a pneumatic tire containing the polymer. The present invention relates to a polymer ready for introduction into a kneading machine, excluding natural rubber, the polymer having a temperature within the range of −20° C. to 80° C. and satisfying the following formula (I): (Tip clearance d of kneading machine) 3 ≤(Volume V of polymer ready for introduction into kneading machine)≤ 2.0×10 4 cm 3    (I).

1 . A polymer ready for introduction into a kneading machine, excluding natural rubber, the polymer having a temperature within the range of −20° C. to 80° C. and satisfying the following formula (I):
   (Tip clearance  d  of kneading machine) 3 ≤(Volume  V  of polymer ready for introduction into kneading machine)≤2.0×10 4  cm 3     (I).
 
 
     
     
         2 . The polymer ready for introduction into a kneading machine according to  claim 1 ,
 wherein the polymer has a quadrangular prism shape that satisfies a≥d, b≥d, and c≥d, wherein a, b, and c represent length, width, and height of the quadrangular prism shape, respectively.   
     
     
         3 . A rubber composition, comprising the polymer ready for introduction into a kneading machine according to  claim 1 . 
     
     
         4 . A pneumatic tire, comprising the rubber composition according to  claim 3 .