公开(公告)号：US20220153969A1

公开(公告)日：2022-05-19

申请号：US17587266

申请日：2022-01-28

Applicant: JSR Corporation

Inventor： Koichiro TANI ,  Naoki SUGIYAMA ,  Kunpei KOBAYASHI ,  Ryoji TANAKA

IPC: C08L9/06 ,  C08K3/36 ,  B60C1/00

Abstract: A method for producing a rubber composition may include: mixing modified silica (B), pre-prepared by surface treatment of unmodified silica, with a modified conjugated diene-based polymer (A) and a polymer having crystalline character (C). A crosslinked product may be produced through crosslinking a rubber composition obtained from such a method. The crosslinked product may be used for producing a tire including a tread and a sidewall, wherein at least one of the tread and the sidewall is formed of the crosslinked product.

公开(公告)号：US20200086687A1

公开(公告)日：2020-03-19

申请号：US16542453

申请日：2019-08-16

Applicant: JSR Corporation

Inventor： Koichiro TANI ,  Takuya SANO ,  Takato FUKUMOTO ,  Naoki SUGIYAMA ,  Kunpei KOBAYASHI ,  Takumi ADACHI ,  Jiro UEDA ,  Ryoji TANAKA

IPC: B60C1/00 ,  C08L15/00 ,  C08K9/06 ,  C08K3/36

Abstract: A rubber composition contains: (A) a polymer having a carbon-carbon unsaturated bond and exhibiting a value α of 0.6 or more as obtained by the following formula (i): α=(p+(0.5×r))/(p+q+(0.5×r)+s)  (i) wherein p, q, r, and s are the proportions by mole of structural units represented by the following formulae (1), (2), (3), and (4), respectively in the polymer: and (B) modified silica.

公开(公告)号：US20180207983A1

公开(公告)日：2018-07-26

申请号：US15742735

申请日：2016-07-21

Applicant: JSR CORPORATION

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

IPC: B60C1/00 ,  C08F8/04 ,  C08F236/10 ,  C08F297/04 ,  C08L9/06

CPC classification number: B60C1/0016 ,  B60C1/0025 ,  C08C19/02 ,  C08F8/04 ,  C08F236/10 ,  C08F297/04 ,  C08F2800/20 ,  C08K3/06 ,  C08K3/36 ,  C08K5/47 ,  C08K5/548 ,  C08L9/06 ,  C08F236/06 ,  C08F212/08 ,  C08L15/00

Abstract: Provided is a hydrogenated conjugated diene polymer which is a hydrogenated product of a conjugated diene polymer comprising a structural unit derived from a conjugated diene compound and a structural unit derived from an aromatic vinyl compound, wherein the conjugated diene compound includes butadiene, the hydrogenated conjugated diene polymer is obtained by hydrogenating a polymer in which a vinyl bond content in the structural unit derived from butadiene is 50 mol % or less, an amount of the structural unit derived from the aromatic vinyl compound is 5 to 25 mass % with respect to entire structural units derived from monomers of the polymer, and a hydrogenation rate of the structural unit derived from butadiene is 91% to 99%.

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：US20180223008A1

公开(公告)日：2018-08-09

申请号：US15747932

申请日：2016-07-27

Applicant: JSR CORPORATION

Inventor： Mitsunori INOUE ,  Takumi ADACHI ,  Kenji YANAGIBASHI ,  Ryoji TANAKA

IPC: C08C19/30 ,  B60C1/00

CPC classification number: C08C19/30 ,  B60C1/00 ,  B60C1/0016 ,  B60C1/0025 ,  C08C19/22 ,  C08C19/44 ,  C08F36/04 ,  C08F36/06 ,  C08F236/10 ,  C08K3/06 ,  C08K3/36 ,  C08L15/00

Abstract: A conjugated diene-based polymer comprising a structural unit derived from a conjugated diene compound and having, at a terminal of the polymer, at least one nitrogen-containing group represented by formula (1) is used. In formula (1), R1 is a hydrocarbyl group, and the symbol “*” is a bonding site.

公开(公告)号：US20180201065A1

公开(公告)日：2018-07-19

申请号：US15744165

申请日：2016-07-21

Applicant: JSR CORPORATION

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

IPC: B60C1/00 ,  C08K3/011 ,  C08K3/34 ,  C08K5/00 ,  C08L9/06 ,  C08F236/10 ,  C08F8/04 ,  C08F297/04

CPC classification number: B60C1/0016 ,  B60C1/0025 ,  C08C19/02 ,  C08F8/04 ,  C08F236/10 ,  C08F297/04 ,  C08K3/011 ,  C08K3/34 ,  C08K3/36 ,  C08K5/0025 ,  C08L9/06 ,  C08L15/00

Abstract: Provided is a hydrogenated conjugated diene polymer which is a hydrogenated product of a conjugated diene polymer comprising a structural unit derived from a conjugated diene compound and a structural unit derived from an aromatic vinyl compound, wherein the conjugated diene compound includes butadiene, the hydrogenated conjugated diene polymer is obtained by hydrogenating a polymer in which a vinyl bond content in structural unit derived from butadiene is 55 mol % or more, and a hydrogenation rate of the structural unit derived from butadiene is 91% to 99%.

公开(公告)号：US20180201066A1

公开(公告)日：2018-07-19

申请号：US15744225

申请日：2016-07-21

Applicant: JSR CORPORATION

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

IPC: B60C1/00 ,  C08K3/011 ,  C08K3/34 ,  C08K5/00 ,  C08L9/06 ,  C08F236/10 ,  C08F8/04 ,  C08F297/04

CPC classification number: B60C1/0016 ,  B60C1/00 ,  B60C1/0025 ,  C08C19/02 ,  C08F8/04 ,  C08F236/10 ,  C08F297/04 ,  C08F2800/20 ,  C08K3/011 ,  C08K3/06 ,  C08K3/34 ,  C08K3/36 ,  C08K5/0025 ,  C08K5/47 ,  C08K5/548 ,  C08L9/06 ,  C08F236/06 ,  C08F212/08 ,  C08L15/00

Abstract: Provided is a hydrogenated conjugated diene polymer which is a hydrogenated product of a conjugated diene polymer having a structural unit derived from a conjugated diene compound and a structural unit derived from an aromatic vinyl compound, wherein the conjugated diene compound includes butadiene, an amount of the structural unit derived from the aromatic vinyl compound is 30 mass % or more with respect to entire structural units derived from monomers of the polymer, and a hydrogenation rate of the structural unit derived from butadiene is 80% to 99%.

公开(公告)号：US20180051101A1

公开(公告)日：2018-02-22

申请号：US15556914

申请日：2016-01-29

Applicant: JSR CORPORATION

Inventor： Takumi ADACHI ,  Koichiro TANI ,  Hiroyuki MORITA ,  Ryoji TANAKA

IPC: C08C19/25 ,  B60C1/00 ,  C08J3/24 ,  C08K3/36

CPC classification number: C08C19/25 ,  B60C1/00 ,  B60C1/0016 ,  C08C19/22 ,  C08F8/32 ,  C08F36/04 ,  C08J3/24 ,  C08K3/36 ,  C08L15/00

Abstract: A modified conjugated diene-based polymer is produced by reacting a conjugated diene-based polymer having an alkali metal or an alkali-earth metal at a terminal of the polymer with a compound represented by formula (1). R1 and R2 independently represent a hydrocarbyl group having 20 or fewer carbon atoms. R3 represents a substituted alkyl group having 20 or fewer carbon atoms prepared through substitution of at least one of a hydrogen atom and —CH2— of an alkyl group by a group containing only at least one heteroatom selected from the group consisting of nitrogen, phosphorus, oxygen, and sulfur, or a monovalent aromatic group having 20 or fewer carbon atoms and containing at least one element selected from the group consisting of nitrogen, phosphorus, oxygen, and sulfur, with the proviso that R3 does not have active hydrogen. R4 represents an alkanediyl group having 20 or fewer carbon atoms. n is 1 or 2

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 。