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1. (WO2017038087) EMULSION-POLYMERIZED STYRENE-BUTADIENE RUBBER, RUBBER COMPOSITION, AND TIRE

Pub. No.:    WO/2017/038087    International Application No.:    PCT/JP2016/003959
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Wed Aug 31 01:59:59 CEST 2016
IPC: C08C 19/25
B60C 1/00
C08K 3/04
C08K 3/36
C08L 9/06
Applicants: BRIDGESTONE CORPORATION
株式会社ブリヂストン
Inventors: TANAKA, Takatsugu
田中 隆嗣
Title: EMULSION-POLYMERIZED STYRENE-BUTADIENE RUBBER, RUBBER COMPOSITION, AND TIRE
Abstract:
The purpose of the present invention is to provide an emulsion-polymerized styrene-butadiene rubber which exhibits both wear resistance and low-loss properties when used in a tire or other rubber products. To achieve the purpose, the present invention is a styrene-butadiene rubber synthesized by emulsion polymerization, and the styrene-butadiene rubber synthesized by emulsion polymerization is characterized by having, at a terminal thereof, a modified functional group containing a nitrogen atom and having a solubility parameter (SP value) of 9.55 or less as measured by Fedors method, or a modified functional group containing a hydroxyl group and having a SP value of less than 15.00.