Kautschukzusammensetzung für Basislauffläche

Details

Veröffentlichungs-Nr.

EP3301130

Aktenzeichen

EP17194254

Anmeldetag

29. September 2017

Veröffentlichung

6. März 2019

Erteilung

6. März 2019

Rechtsraum

EP

IPC

C08L7/00C08L9/00C08L21/00B60C1/00C08K3/013

Abstract

The purpose of the present invention is to provide a rubber composition for a base tread being excellent in fuel efficiency. In the rubber composition for a base tread, a dynamic elastic modulus E* (MPa) and a loss tangent tanδ which are measured at a temperature of 70°C, an initial strain of 10% and a dynamic strain of 2% satisfy the following general formulae (1) to (3), and a strength at break TB (MPa) and an elongation at break EB (%) which are measured according to JIS K6251 satisfy the following general formulae (4) and (5). E * / tanδ ≥ 25 <img class="EMIRef" id="504468756-ia01" /> 2.0 ≤ E * ≤ 8.0 <img class="EMIRef" id="504468756-ia02" /> tanδ ≤ 0.08 <img class="EMIRef" id="504468756-ia03" /> EB ≥ 350 <img class="EMIRef" id="504468756-ia04" /> TB × EB ≥ 8500 <img class="EMIRef" id="504468756-ia05" />

Anmelder

Firma

SUMITOMO RUBBER INDUSTRIES, LTD.

Land

🇯🇵 Japan

Fachgebiete