公开(公告)号：US20190218378A1

公开(公告)日：2019-07-18

申请号：US16364857

申请日：2019-03-26

Applicant: JSR Corporation

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

IPC: C08L9/06 ,  C08J3/22 ,  C08J3/24 ,  B60C1/00

CPC classification number: C08L9/06 ,  B60C1/0016 ,  C08J3/226 ,  C08J3/24 ,  C08L9/00 ,  C08L2205/025 ,  C08L2310/00 ,  C08L2312/02

Abstract: Provided is a method that can produce an inexpensive rubber composition capable of providing a rubber elastic body having high strength. A method for producing a rubber composition of the present invention includes steps of: (A) kneading a component containing at least a highly saturated conjugated diene-based polymer and a crosslinking agent component; (B) kneading a component containing at least a conjugated diene-based polymer other than the highly saturated conjugated diene-based polymer; and (C) kneading an intermediate composition (a) obtained in the step (A) and an intermediate composition (b) obtained in the step (B).

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%.