Title:
CONJUGATED DIENE GRAFT POLYMER AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2021/054427
Kind Code:
A1
Abstract:
The present invention provides a conjugated diene graft polymer which exhibits high stability, while having excellent affinity for a polar material. A conjugated diene graft polymer wherein side chains (b), each of which is composed of a polymer that contains at least one monomer unit selected from the group consisting of a conjugated diene unit and an aromatic vinyl compound unit, are bonded to a main chain (a), which is composed of a polymer that contains a conjugated diene unit, respectively via one heteroatom which serves as a branch point, while having a valence of 3 or more. With respect to this conjugated diene graft polymer, the main chain (a) is bonded to the branch points directly or via a linking chain; the side chains (b) are bonded to the branch points directly; the heteroatom is at least one atom selected from the group consisting of Si, Sn, Ge, Pb, P, B and Al; at least one functional group (c), which is selected from the group consisting of an alkoxy group and a hydroxyl group, is directly bonded to at least one of the branch points; if N is the valence of the heteroatom, B is the average number of the side chains (b) directly bonded to one branch point and C is the average number of the functional groups (c) bonded to one branch point, N, B and C satisfy a specific relationship; and if X is the average number of the functional groups (c) directly bonded to the branch points per one molecule of the conjugated diene graft polymer and Y is the average number of branch points per one molecule of the conjugated diene graft polymer, X and Y satisfy the relational expression 0 < (X/Y) < 1.
Inventors:
UENO YOSHIKAZU (JP)
KANBARA HIROSHI (JP)
INATOMI ATSUSHI (JP)
TAKAI JUNYA (JP)
MA ZHAOMING (JP)
KANBARA HIROSHI (JP)
INATOMI ATSUSHI (JP)
TAKAI JUNYA (JP)
MA ZHAOMING (JP)
Application Number:
PCT/JP2020/035407
Publication Date:
March 25, 2021
Filing Date:
September 18, 2020
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C08C19/25; C08G81/02; C08L15/00
Domestic Patent References:
| WO2018034195A1 | 2018-02-22 | |||
| WO2018043700A1 | 2018-03-08 | |||
| WO2008004686A1 | 2008-01-10 |
Foreign References:
| JP2002308932A | 2002-10-23 | |||
| JP2017128647A | 2017-07-27 | |||
| JP2017031363A | 2017-02-09 |
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
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