Title:
RUBBER COMPOSITION FOR STUDLESS TIRE, AND STUDLESS TIRE
Document Type and Number:
Japanese Patent JP2018100321
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a rubber composition for a studless tire excellent in on-ice grip performance and snow sticking performance, and to provide a studless tire prepared using the same.SOLUTION: There is provided a rubber composition for a studless tire, which contains a rubber component containing an isoprene-based rubber and a resin satisfying a following expression (1): y<-30x+320. In the expression, x is a SP value of resin, and y is a cloud point of resin measured by the following method. In the measurement method of cloud point, the resin is mixed with a liquid isoprene rubber having a weight average molecular weight of 25,000-30,000, and the mixed substance is heated to 150°C and completely dissolved to prepare a transparent solution having resin concentration of 10 mass%. The solution is gradually cooled, and a temperature when a cloud is generated is defined as the cloud point.SELECTED DRAWING: None
Inventors:
MIYASE HARUKO
TAKENAKA MINAKO
TAKENAKA MINAKO
Application Number:
JP2016245503A
Publication Date:
June 28, 2018
Filing Date:
December 19, 2016
Export Citation:
Assignee:
SUMITOMO RUBBER IND
International Classes:
C08L9/00; B60C1/00; C08K3/36; C08L21/00; C08L45/00
Attorney, Agent or Firm:
Atomi International Patent Office
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