Title:
HYDROGENATED CONJUGATED DIENE GRAFT POLYMER AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2021/132286
Kind Code:
A1
Abstract:
Provided is a hydrogenated conjugated diene graft polymer that has superior affinity to polar materials and is highly stable. This hydrogenated conjugated diene graft polymer comprises a side chain (b) which is formed from a polymer comprising a structural unit derived from at least one monomer selected from the group consisting of conjugated dienes and aromatic vinyl compounds, and which is bonded by a branch point, constituted by a single heteroatom having a valence of 3 or higher, to a main chain (a) formed from a polymer comprising a structural unit derived from a conjugated diene, at least some of the carbon-carbon double bonds included in the structural unit derived from the conjugated diene included in the graft polymer being hydrogenated. The main chain (a) is bonded to the branch point directly or via a linking chain. The side chain (b) is directly bonded to the branch point. 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) selected from the group consisting of alkoxy groups and hydroxy groups is directly bonded to at least one branch point. The valence N of the heteroatom, the average number B of side chains (b) directly bonded to a single branch point, and the average number C of functional groups (c) bonded to a single branch point satisfy a specific relationship. The average number X of functional groups (c) directly bonded to the branch point per molecule of the hydrogenated conjugated diene graft polymer and the average number Y of branch points per molecule of the hydrogenated conjugated diene graft polymer satisfy the relationship 0 < (X/Y) < 1.
Inventors:
KANBARA HIROSHI (JP)
INATOMI ATSUSHI (JP)
TAKAI JUNYA (JP)
MA ZHAOMING (JP)
INATOMI ATSUSHI (JP)
TAKAI JUNYA (JP)
MA ZHAOMING (JP)
Application Number:
PCT/JP2020/048051
Publication Date:
July 01, 2021
Filing Date:
December 22, 2020
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C08C19/02; C08C19/25; C08F297/02
Domestic Patent References:
| WO2018034195A1 | 2018-02-22 | |||
| WO2018043700A1 | 2018-03-08 |
Foreign References:
| JPH0425511A | 1992-01-29 | |||
| JPS62225513A | 1987-10-03 | |||
| JP2002308932A | 2002-10-23 |
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
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