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：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：US20160009903A1

公开(公告)日：2016-01-14

申请号：US14770988

申请日：2014-02-27

Applicant: JSR CORPORATION

Inventor： Hiroyuki MORITA ,  Koichiro TANI ,  Koji OKADA ,  Masaaki INOUE

IPC: C08K5/544 ,  C08J3/24

CPC classification number: C08K5/544 ,  B60C1/00 ,  C08C19/22 ,  C08C19/25 ,  C08C19/44 ,  C08F4/44 ,  C08F36/04 ,  C08F236/06 ,  C08F236/10 ,  C08J3/24 ,  C08J2309/06 ,  C08K3/36 ,  C08L9/06 ,  C08L15/00 ,  C08F2/06 ,  C08F4/48 ,  C08F212/08

Abstract: The invention provides a rubber composition which can improve low fuel consumption performance, workability, and abrasion resistance at the same time in uses of automobile tires and the like. A modified conjugated diene polymer is produced by a method comprising: a polymerization step of polymerizing a conjugated diene compound or polymerizing a conjugated diene compound and an aromatic vinyl compound to obtain a conjugated diene polymer having an active end in the presence of a metal amide compound obtained by mixing an alkali metal compound or an alkaline earth metal compound with a secondary amine compound and a first modification step of reacting the active end with a compound (C1) having a functional group (a) that interacts with silica, having one or more linear structures where three or more groups or atoms in total derived from at least either of a methylene group and a divalent atom are linearly connected, and capable of binding to a plurality of the active ends.

Abstract translation: 本发明提供一种橡胶组合物，其可以在汽车轮胎等的使用中同时提高低燃料消耗性能，可加工性和耐磨性。 通过以下方法制备改性共轭二烯聚合物：将共轭二烯化合物聚合或使共轭二烯化合物和芳族乙烯基化合物聚合的聚合步骤，得到在金属酰胺化合物存在下具有活性末端的共轭二烯聚合物 通过将碱金属化合物或碱土金属化合物与仲胺化合物混合而获得的第一改性步骤和使活性端与具有与二氧化硅相互作用的官能团（a）的化合物（C1）反应的第一改性步骤，其具有一个或多个 线性结构，其中总共衍生自亚甲基和二价原子中的至少一个的三个或更多个基团或原子线性连接，并且能够结合多个活性末端。