公开(公告)号：US20220098380A1

公开(公告)日：2022-03-31

申请号：US17479492

申请日：2021-09-20

Applicant: JSR CORPORATION

Inventor： Toshimitsu KIKUCHI ,  Hirofumi SENGA ,  Yuto SAKAGAMI ,  Takuya SANO ,  Takato FUKUMOTO ,  Toshiyuki HAYAKAWA

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

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：US20210238396A1

公开(公告)日：2021-08-05

申请号：US17161688

申请日：2021-01-29

Applicant: JSR CORPORATION

Inventor： Toshimitsu KIKUCHI ,  Takuya SANO ,  Hirofumi SENGA ,  Yuto Sakagami ,  Takato FUKUMOTO ,  Toshiyuki HAYAKAWA

IPC: C08L9/06 ,  B60C1/00 ,  C08K5/00

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：US20180251576A1

公开(公告)日：2018-09-06

申请号：US15759425

申请日：2016-09-06

Applicant: JSR CORPORATION

Inventor： Takumi ADACHI ,  Hirofumi SENGA ,  Fumihiro TOYOKAWA ,  Naoya NOSAKA ,  Takaomi MATSUMOTO ,  Ryoji TANAKA

IPC: C08C19/02 ,  C08K3/36 ,  C08K5/548 ,  B60C1/00

CPC classification number: C08C19/02 ,  B60C1/00 ,  B60C1/0016 ,  B60C1/0025 ,  C08F8/04 ,  C08K3/36 ,  C08K5/548

Abstract: Provided is a rubber material that is well-balanced in terms of tensile strength, low hysteresis loss property, wet grip property, and abrasion resistance. A hydrogenated conjugated diene-based polymer which is a hydrogenation product of a conjugated diene-based polymer including butadiene-derived structural units is produced by a method comprising a step of preparing a conjugated diene-based polymer having, at a side chain moiety thereof, a functional group capable of interacting with silica; and a step of hydrogenating the conjugated diene-based polymer so as to achieve a hydrogenation rate of 80 to 99% of butadiene-derived structural units included in the conjugated diene-based polymer.

公开(公告)号：US20160009911A1

公开(公告)日：2016-01-14

申请号：US14768374

申请日：2014-05-13

Applicant: JSR CORPORATION

Inventor： Hirofumi SENGA ,  Naoya NOSAKA ,  Shigeru ABE

IPC: C08L33/02 ,  C08L9/06

CPC classification number: C08L33/02 ,  B60C1/0016 ,  B60C1/0025 ,  C08C19/22 ,  C08C19/44 ,  C08K3/36 ,  C08K5/548 ,  C08L9/06 ,  C08L15/00 ,  C08L25/10 ,  C08L101/02 ,  C08L101/025 ,  C08L101/08

Abstract: Provided is a polymer composition for use in the production of a crosslinked polymer having excellent tensile strength and abrasion resistance. A polymer composition comprising a polymer having multiple anionic functional groups and a polymer having multiple nitrogenated functional groups each represented by formula (1). The anionic functional groups are at least one group selected from a carboxy group, a sulfo group and a phosphate group. In one embodiment, each of the nitrogenated functional groups represented by formula (1) is bound to a structure derived from a conjugated diene compound or a structure derived from an aromatic vinyl compound.

Abstract translation: 提供一种用于生产具有优异的抗拉强度和耐磨性的交联聚合物的聚合物组合物。 一种聚合物组合物，其包含具有多个阴离子官能团的聚合物和具有由式（1）表示的多个氮化官能团的聚合物。 阴离子官能团为选自羧基，磺基和磷酸基中的至少一个。 在一个实施方案中，由式（1）表示的每个氮化官能团与衍生自共轭二烯化合物的结构或衍生自芳族乙烯基化合物的结构结合。

公开(公告)号：US20190062539A1

公开(公告)日：2019-02-28

申请号：US16081633

申请日：2017-03-01

Applicant: JSR CORPORATION

Inventor： Takumi ADACHI ,  Hirofumi SENGA ,  Fumihiro TOYOKAWA

IPC: C08L15/00 ,  C08K3/04 ,  C08K3/36 ,  C08L91/00 ,  B60C1/00

Abstract: There is provided a hydrogenated conjugated diene-based rubber which can give a crosslinked rubber having high strength and excellent low fuel consumption performance and can give a rubber composition having excellent formability. A hydrogenated conjugated diene-based rubber having a hydrogenation rate of butadiene unit of 90% or more, wherein, in the molecular weight distribution of the hydrogenated conjugated diene-based rubber as determined by a gel permeation chromatographic method, when a peak area of a molecular weight of 1,000 to 250,000 is taken as AL and a peak area of a molecular weight of 250,000 or more is taken as AH, the ratio of AL to the total area of AL and AH is 0.5% to 20%.

公开(公告)号：US20160215127A1

公开(公告)日：2016-07-28

申请号：US15023529

申请日：2014-10-29

Applicant: JSR CORPORATION

Inventor： Yukihiro SAWADA ,  Hirofumi SENGA ,  Shigeru ABE

IPC: C08L9/06

CPC classification number: C08L9/06 ,  B60C1/00 ,  B60C1/0016 ,  B60C1/0025 ,  C08C19/22 ,  C08C19/25 ,  C08C19/44 ,  C08K3/04 ,  C08K3/36 ,  C08L15/00 ,  C08L23/0815 ,  C08L23/16

Abstract: A cross-linked rubber exhibits high strength and excellent abrasion resistance as compared with a known cross-linked rubber. The cross-linked rubber is obtained by cross-linking a rubber composition that includes a hydrogenated conjugated diene-based polymer, an olefin-based rubber, and a cross-linking agent, the hydrogenated conjugated diene-based polymer being a hydrogenated product of a polymer that includes a structural unit derived from butadiene, and including at least one of an amino group and a hydrocarbyloxysilyl group at one terminal or each terminal.

Abstract translation: 与已知的交联橡胶相比，交联橡胶显示出高强度和优异的耐磨性。 交联橡胶通过交联包含氢化共轭二烯系聚合物，烯烃类橡胶和交联剂的橡胶组合物而获得，氢化共轭二烯系聚合物为氢化产物 聚合物，其包含衍生自丁二烯的结构单元，并且在一个末端或每个末端包含氨基和烃氧基甲硅烷基中的至少一个。

公开(公告)号：US20150361210A1

公开(公告)日：2015-12-17

申请号：US14762681

申请日：2014-02-27

Applicant: JSR CORPORATION

Inventor： Naoya NOSAKA ,  Shigeru ABE ,  Hirofumi SENGA ,  Takumi ADACHI ,  Ryoji TANAKA

IPC: C08F299/02 ,  C08K3/04 ,  C08K3/36

CPC classification number: C08F299/02 ,  B60C1/0016 ,  B60C1/0025 ,  C08C19/02 ,  C08C19/20 ,  C08C19/22 ,  C08C19/24 ,  C08C19/25 ,  C08C19/44 ,  C08K3/04 ,  C08K3/06 ,  C08K3/36 ,  C08K5/0025 ,  C08L15/00

Abstract: Provided is a tire member which is satisfactory in low fuel consumption performance and exhibits higher strength and more excellent abrasion resistance as compared with conventional ones. The tire member is a tire member obtained by subjecting a composition containing a hydrogenated conjugated diene polymer and a crosslinking agent to a crosslinking treatment, wherein the hydrogenated conjugated diene polymer is a hydrogenated product of a conjugated diene polymer that has a structural unit derived from butadiene and has a functional group at one end or both ends and the functional group is one or more groups selected from the group consisting of an amino group, an imino group, a pyridyl group, a phosphino group, a thiol group, and a hydrocarbyloxysilyl group.

Abstract translation: 本发明提供一种轮胎部件，与传统的轮胎部件相比，其低燃料消耗性能令人满意并且表现出更高的强度和更优异的耐磨性。 轮胎构件是通过对包含氢化共轭二烯聚合物和交联剂的组合物进行交联处理而获得的轮胎构件，其中氢化共轭二烯聚合物是具有衍生自丁二烯的结构单元的共轭二烯聚合物的氢化产物 并且在一端或两端具有官能团，官能团是选自氨基，亚氨基，吡啶基，膦基，硫醇基和烃氧基甲硅烷基中的一个或多个基团 。

公开(公告)号：US20220153971A1

公开(公告)日：2022-05-19

申请号：US17438699

申请日：2020-03-27

Applicant: JSR CORPORATION

Inventor： Takumi ADACHI ,  Hirofumi SENGA ,  Michitaka KAIZU ,  Toshimitsu KIKUCHI ,  Takuya SANO

IPC: C08L15/00 ,  C08C19/22 ,  C08C19/02 ,  C08C19/25 ,  C08K3/36 ,  B60C1/00

Abstract: A hydrogenated conjugated diene-based polymer which has a structure formed by bonding a nitrogen-containing compound having two or more alkoxysilyl groups and two or more nitrogen atoms with a plurality of conjugated diene-based polymer chains, wherein: when a composition ratio (molar ratio) in the hydrogenated conjugated diene-based polymer of each of a structural unit represented by formula (1), a structural unit represented by formula (2), a structural unit represented by formula (3), and a structural unit represented by formula (4) is p, q, r, and s, respectively, a value a represented by formula (i) is 0.80 or more and 0.97 or less, and an equilibrium storage modulus E′ of the hydrogenated conjugated diene-based polymer is 2.4 MPa or more, α=(p+(0.5×xr))/(p+q+(0.5×xr)+s) . . .(i)