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.
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Inventors:
TSUNODA KATSUHIKO (JP)
Application Number:
PCT/JP2019/006461
Publication Date:
August 29, 2019
Filing Date:
February 21, 2019
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
C08L9/00; B60C1/00; C08L7/00; F16F1/36
Domestic Patent References:
| WO2014003052A1 | 2014-01-03 | |||
| WO2003093337A1 | 2003-11-13 |
Foreign References:
| JPH0725212A | 1995-01-27 | |||
| JP2012197422A | 2012-10-18 | |||
| JPH11140230A | 1999-05-25 | |||
| JPH0885303A | 1996-04-02 | |||
| JP2000119325A | 2000-04-25 | |||
| JP2000119326A | 2000-04-25 | |||
| JP2004528410A | 2004-09-16 | |||
| JP2005518467A | 2005-06-23 | |||
| JP2005527641A | 2005-09-15 | |||
| JP2009108330A | 2009-05-21 | |||
| JPH0725212A | 1995-01-27 | |||
| JPH06306207A | 1994-11-01 | |||
| JPH06199103A | 1994-07-19 | |||
| JPH0692108A | 1994-04-05 | |||
| JPH0687975A | 1994-03-29 |
Other References:
See also references of EP 3757160A4
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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