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Title:
PRODUCTION METHOD FOR VULCANIZED RUBBER COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2019/163869
Kind Code:
A1
Abstract:
The present invention provides a production method for a vulcanized rubber composition including: a rubber component including polyisoprene rubber; and syndiotactic 1, 2 polybutadiene. The production method increases the crack growth resistance of the vulcanized rubber composition and is characterized by: kneading the syndiotactic 1, 2 polybutadiene and the polyisoprene rubber at a temperature that is 10–100°C greater than the melting point of the syndiotactic 1, 2 polybutadiene; and vulcanizing the obtained unvulcanized rubber composition at a temperature no more than ±15ºC of the melting point of the syndiotactic 1, 2 polybutadiene.

Inventors:
TSUNODA KATSUHIKO (JP)
Application Number:
PCT/JP2019/006461
Publication Date:
August 29, 2019
Filing Date:
February 21, 2019
Export Citation:
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Assignee:
BRIDGESTONE CORP (JP)
International Classes:
C08L9/00; B60C1/00; C08L7/00; F16F1/36
Domestic Patent References:
WO2014003052A12014-01-03
WO2003093337A12003-11-13
Foreign References:
JPH0725212A1995-01-27
JP2012197422A2012-10-18
JPH11140230A1999-05-25
JPH0885303A1996-04-02
JP2000119325A2000-04-25
JP2000119326A2000-04-25
JP2004528410A2004-09-16
JP2005518467A2005-06-23
JP2005527641A2005-09-15
JP2009108330A2009-05-21
JPH0725212A1995-01-27
JPH06306207A1994-11-01
JPH06199103A1994-07-19
JPH0692108A1994-04-05
JPH0687975A1994-03-29
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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