公开(公告)号：US20200172682A1

公开(公告)日：2020-06-04

申请号：US16783210

申请日：2020-02-06

Applicant: JSR Corporation

Inventor： Koichiro TANI ,  Ryota FUNAKI ,  Rikimaru KUWABARA ,  Hiroyuki MORITA ,  Takaomi MATSUMOTO

IPC: C08J3/20 ,  C08F236/10 ,  C08L9/06 ,  C08K3/36 ,  C08K5/3435 ,  C08K5/357 ,  C08K5/18 ,  C08K5/17

Abstract: The present invention has as its object the provision of a production process of a rubber composition containing a modified conjugated diene-based polymer, which can provide a rubber composition in which processability is excellent, and a filling agent, when contained, has favorable dispersibility therein.The production process of a rubber composition according to the present invention includes: a first step of kneading a modified conjugated diene-based polymer that is obtained by polymerizing a monomer containing a conjugated diene compound and has at least one nitrogen-containing functional group selected from the group consisting of a primary amino group, a secondary amino group, a tertiary amino group and groups in which these amino groups have been converted into an onium group, and a basic compound having an acid dissociation constant of 8.0 or more; and a second step of kneading the kneaded product obtained in the first step and a cross-linking agent.

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：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：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%.