Title:
BLOCK COPOLYMER, METHOD FOR PRODUCING SAME, RUBBER COMPOSITION USING SAID BLOCK COPOLYMER, AND TIRE
Document Type and Number:
WIPO Patent Application WO/2019/189572
Kind Code:
A1
Abstract:
A block copolymer which contains: a polymer block A that contains a monomer unit (a1) derived from a farnesene; and a random copolymer block B that contains a monomer unit (b1) derived from a conjugated diene having 12 or less carbon atoms and a monomer unit (b2) derived from an aromatic vinyl compound. This block copolymer is configured such that: the mass ratio (A/B) of the polymer block A to the random copolymer block B in this block copolymer is from 30/70 to 0.5/99.5; the content of the monomer unit (b2) derived from an aromatic vinyl compound in the random copolymer block B is 1-50% by mass; and the weight average molecular weight (Mw) of this block copolymer is from 100,000 to 5,000,000.
Inventors:
KODA DAISUKE (JP)
Application Number:
PCT/JP2019/013598
Publication Date:
October 03, 2019
Filing Date:
March 28, 2019
Export Citation:
Assignee:
KURARAY CO (JP)
AMYRIS INC (US)
AMYRIS INC (US)
International Classes:
C08F297/04; B60C1/00; C08L53/02
Domestic Patent References:
| WO2013115010A1 | 2013-08-08 | |||
| WO2013115010A1 | 2013-08-08 |
Foreign References:
| JP2017014374A | 2017-01-19 | |||
| JPH1036465A | 1998-02-10 | |||
| JP2012502135A | 2012-01-26 | |||
| JP2012502136A | 2012-01-26 |
Other References:
See also references of EP 3778684A4
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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