Title:
THIOESTER-MODIFIED POLYMER, METHOD FOR PRODUCING SAME, AND RUBBER COMPOSITION CONTAINING SAME
Document Type and Number:
WIPO Patent Application WO/2014/088091
Kind Code:
A1
Abstract:
A thioester-modified polymer which is obtained by modifying a polymer that has a double bond in each molecule with at least one acid selected from among thiocarboxylic acids and dithiocarboxylic acids. This thioester-modified polymer is produced by having a polymer that has a double bond in each molecule react with a thiocarboxylic acid, a dithiocarboxylic acid or a metal salt of a thiocarboxylic acid or dithiocarboxylic acid, and is compounded and used in a diene rubber. If this thioester-modified polymer is compounded in a diene rubber, particularly in a silica-containing diene rubber, the tensile strength and elongation at break, especially the tensile strength and elongation at break at a high temperature (at 100°C) are improved, without lowering the modulus, hardness, heat generation properties and the like. Consequently, a rubber composition having excellent heat resistance and toughness is effectively used as a rubber compound for molding cap treads and side treads for pneumatic tires.
Inventors:
TANABE YUSUKE (JP)
Application Number:
PCT/JP2013/082810
Publication Date:
June 12, 2014
Filing Date:
December 06, 2013
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
C08C19/20; B60C1/00; C08K3/36; C08K5/54; C08L9/00; C08L15/00
Foreign References:
| JPH10251222A | 1998-09-22 | |||
| JPH04227734A | 1992-08-17 | |||
| JPS62184036A | 1987-08-12 | |||
| JPH09100320A | 1997-04-15 | |||
| JPH093108A | 1997-01-07 | |||
| JP2009269981A | 2009-11-19 | |||
| US20090215963A1 | 2009-08-27 |
Attorney, Agent or Firm:
YOSHIDA Toshio et al. (JP)
Toshio Yoshida (JP)
Toshio Yoshida (JP)
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