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：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：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 。

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)

公开(公告)号：US20200247982A1

公开(公告)日：2020-08-06

申请号：US16845190

申请日：2020-04-10

Applicant: JSR Corporation

Inventor： Takuya SANO ,  Takato FUKUMOTO ,  Takumi ADACHI ,  Naoya HONDA ,  Kunpei KOBAYSHI ,  Jiro UEDA

IPC: C08L9/06 ,  B60C1/00 ,  B60C11/00

Abstract: The present invention has as its object the provision of a polymer composition from which a rubber elastic body having high strength is obtained and in which excellent processability is achieved, and a tire having excellent strength. The polymer composition according to the present invention includes: a polymer (A) having a 1,2-polybutadiene chain (provided that a polymer falling within the definition for the below-described polymer (B) is excluded); and a polymer (B) having a structural unit derived from a conjugated diene compound and a structural unit derived from an aromatic vinyl compound, in which the structural unit derived from a conjugated diene compound contains a structural unit derived from butadiene, and the following mathematical formula (i) is satisfied when the composition ratios of a structural unit represented by the following chemical formula (1), a structural unit represented by the following chemical formula (2), a structural unit represented by the following chemical formula (3) and a structural unit represented by the following chemical formula (4) are p mol %, q mol %, r mol % and s mol %, respectively. 0.70≤[(p+0.5r)/(p+q+0.5r+s)]≤0.99  Mathematical Formula (i)

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.