公开(公告)号：US11912873B2

公开(公告)日：2024-02-27

申请号：US17161688

申请日：2021-01-29

Applicant: ENEOS Materials Corporation

Inventor： Toshimitsu Kikuchi ,  Takuya Sano ,  Hirofumi Senga ,  Yuto Sakagami ,  Takato Fukumoto ,  Toshiyuki Hayakawa

IPC: C08L9/06 ,  B60C1/00 ,  C08K5/00

CPC classification number: C08L9/06 ,  B60C1/0016 ,  B60C1/0025 ,  C08K5/0025

Abstract: There is provided a polymer composition using which a molded product having excellent balance between rigidity, wear resistance, viscoelastic properties, and heat resistance can be obtained.
A polymer composition according to the disclosure includes (A) a conjugated diene rubber (where, a polymer corresponding to the following component (B) is excluded); and (B) a hydrogenated product of a polymer that satisfies the following (1) to (3), which is a polymer in which 80% or more of structural units derived from butadiene are hydrogenated:



(1) being a copolymer of a conjugated diene compound containing butadiene and an aromatic vinyl compound,
(2) including a polybutadiene block having a vinyl group content of 20% or less, and
(3) including a block composed of a conjugated diene compound and an aromatic vinyl compound.

公开(公告)号：US12157803B2

公开(公告)日：2024-12-03

申请号：US17479492

申请日：2021-09-20

Applicant: ENEOS MATERIALS CORPORATION

Inventor： Toshimitsu Kikuchi ,  Hirofumi Senga ,  Yuto Sakagami ,  Takuya Sano ,  Takato Fukumoto ,  Toshiyuki Hayakawa

IPC: C08J9/00 ,  B60C1/00 ,  C08J9/18 ,  C08L9/06

Abstract: A polymer composition includes a conjugated diene polymer (A) and a compound (B). The compound (B) is at least one compound selected from the group consisting of a polysiloxane compound and a fluorine-containing compound. The conjugated diene polymer (A) contains, when the composition ratios (molar ratios) in the polymer of the structural units represented by formulas (1) to (4) are p, q, r, and s, respectively, a polymer (A-1) satisfying formula (i). 0.75≤(p+(0.5×r))/(p+q+(0.5×r)+s)≤0.95  Formula (i):

公开(公告)号：US11970637B2

公开(公告)日：2024-04-30

申请号：US17688944

申请日：2022-03-08

Applicant: ENEOS MATERIALS CORPORATION

Inventor： Toshimitsu Kikuchi ,  Hirofumi Senga ,  Tatsumoto Nakahama ,  Takuya Sano ,  Takato Fukumoto ,  Yuto Sakagami ,  Toshiyuki Hayakawa

IPC: C09J153/02 ,  C08L53/02 ,  C09J7/30

CPC classification number: C09J153/025 ,  C08L53/025 ,  C09J7/30 ,  C09J2453/00

Abstract: Provided is a block polymer including two or more polymer block As each having a value β of 0.20 or less and a functional group F containing at least one element selected from a group consisting of nitrogen, silicon, oxygen, and sulfur in a part or all of terminals of the two or more polymer block As, in which the block polymer has a value α of 0.75 or more, when p, q, r and s are defined as a component proportion (molar proportion) of a structural unit represented by Formula (1), a component proportion of a structural unit represented by Formula (2), a component proportion of a structural unit represented by Formula (3), and a component proportion of a structural unit represented by Formula (4), in the polymer, respectively.