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：US20190194430A1

公开(公告)日：2019-06-27

申请号：US16311460

申请日：2017-06-20

Applicant: JSR CORPORATION

Inventor： Kazuya MORISHITA ,  Mitsunori INOUE ,  Daisuke YOSHII ,  Yusuke AMANO

IPC: C08L15/00 ,  C08C19/04 ,  C08C19/22 ,  C08C19/20 ,  C08C19/25 ,  C08K3/36 ,  C08C19/30 ,  C07F7/18 ,  B60C1/00

CPC classification number: C08L15/00 ,  B60C1/0016 ,  B60C1/0025 ,  C07F7/1804 ,  C08C19/04 ,  C08C19/20 ,  C08C19/22 ,  C08C19/25 ,  C08C19/30 ,  C08F4/44 ,  C08F4/50 ,  C08K3/36 ,  C08L23/26 ,  C08L2205/03 ,  C08L2310/00 ,  C08L2312/00 ,  Y02T10/862

Abstract: A modified conjugated diene-based polymer having high Mooney viscosity and good shape stability and exhibiting excellent processability and low heat build-up is obtained in as few steps as possible. The modified conjugated diene-based polymer is produced by a method of reacting a conjugated diene-based polymer having an active chain end, obtained by polymerizing a monomer containing a conjugated diene compound in the presence of an initiator that contains at least either of an alkali metal compound and an alkaline earth metal compound, with a compound [M] having at least two groups selected from the group consisting of a group “—C(R1)N-A1” and a group “—N═C(R1)-A1”, where R1 is a hydrogen atom or a hydrocarbyl group and A1 is a monovalent group having an alkoxysilyl group.