公开(公告)号：US20220073710A1

公开(公告)日：2022-03-10

申请号：US17422531

申请日：2020-02-28

Applicant: JSR CORPORATION

Inventor： Yoshiki NONOYAMA ,  Masaaki INOUE

IPC: C08L15/00 ,  C08L9/06 ,  C08C19/22 ,  C08C19/25 ,  C08K3/36 ,  C08K3/06 ,  B60C1/00

Abstract: A modified conjugated diene-based polymer is produced by a method reacting a conjugated diene-based polymer having an active terminal, which is a polymer obtained by polymerizing a monomer including a conjugated diene compound in the presence of an alkali metal compound, with a compound [A] represented by formula (1). In formula (1), each of R1 and R2 represents a C1 to C8 hydrocarbyl group and the like; each of R5 and R6 represents a C1 to C8 hydrocarbyl group and the like; each of R3 and R4 represents a C1 to C6 hydrocarbylene group; R7 represents a C1 to C10 hydrocarbylene group; X represents a C1 to C4 hydrocarbyloxy group; each of X2 and X3 represent a C1 to C4 hydrocarbyl group or hydrocarbyloxy group; m is an integer of 1 to 3.

公开(公告)号：US20220064414A1

公开(公告)日：2022-03-03

申请号：US17423639

申请日：2020-01-27

Applicant: JSR CORPORATION

Inventor： Masaaki INOUE

IPC: C08L9/06 ,  C08L15/00 ,  C08L7/00 ,  C08K3/06 ,  C08L53/02 ,  C08L23/06 ,  B60C1/00

Abstract: Provided is a rubber composition containing: (A) a polymer which has a carbon-carbon unsaturated bond and in which a value α represented by the following equation (i) is 0.70 or more and 0.99 or less when p, q, r, and s are defined as constituent proportions (molar proportions), in the polymer, of a structural unit represented by the following formula (1), a structural unit represented by the following formula (2), a structural unit represented by the following formula (3), and a structural unit represented by the following formula (4), respectively; and (B) a thermoplastic resin, in which the polymer (A) is contained in an amount of 60% to 95% by mass relative to the total amount of the polymer (A) and the resin (B),

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。