IDiyas

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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10894876 B1

PDFFull Text
Date of Patent:
Jan. 19, 2021

Filed:

Jun. 20, 2017

Method for producing modified conjugated diene-based polymer, modified conjugated diene-based polymer, polymer composition, crosslinked body, tire and compound

Applicant:

Jsr Corporation, Minato-ku, JP;

Inventors:

Kazuya Morishita, Tokyo, JP;

Mitsunori Inoue, Tokyo, JP;

Daisuke Yoshii, Tokyo, JP;

Yusuke Amano, Tokyo, JP;

Assignee:

JSR CORPORATION, Minato-ku, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Doris L Lee

Int. Cl.
CPC ...
C08L 15/00 (2006.01); C08C 19/25 (2006.01); C08K 3/36 (2006.01); C08L 23/26 (2006.01); C08F 4/50 (2006.01); C08F 4/44 (2006.01); B60C 1/00 (2006.01); C07F 7/18 (2006.01); C08C 19/04 (2006.01); C08C 19/20 (2006.01); C08C 19/22 (2006.01); C08C 19/30 (2006.01);
U.S. Cl.
CPC ...
C08L 15/00 (2013.01); B60C 1/0016 (2013.01); B60C 1/0025 (2013.01); C07F 7/1804 (2013.01); C08C 19/04 (2013.01); C08C 19/20 (2013.01); C08C 19/22 (2013.01); C08C 19/25 (2013.01); C08C 19/30 (2013.01); C08F 4/44 (2013.01); C08F 4/50 (2013.01); C08K 3/36 (2013.01); C08L 23/26 (2013.01); C08L 2205/03 (2013.01); C08L 2310/00 (2013.01); C08L 2312/00 (2013.01); Y02T 10/86 (2013.01);
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(R)═N-A' and a group '—N═C(R)-A', where Ris a hydrogen atom or a hydrocarbyl group and Ais a monovalent group having an alkoxysilyl group.

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