公开(公告)号：US20190144638A1

公开(公告)日：2019-05-16

申请号：US16095569

申请日：2017-04-04

Applicant: BRIDGESTONE CORPORATION ,  SUMITOMO BAKELITE CO., LTD.

Inventor： Shigeaki MATSUO ,  Aya SAIKI ,  Yuichi SASAHARA ,  Takao KUNIMI

IPC: C08L7/00 ,  B60C1/00 ,  C08G14/04

Abstract: In the phenolic resin to be blended with rubber of the present invention, when the total peak area in a chemical shift measured by 13C-NMR of 110 ppm or more and 160 ppm or less is taken as 100, the total peak area in 0 ppm or more and less than 60 ppm is 80 to 400 and the total peak area in 60 ppm or more and less than 110 ppm is 2 to 70.

公开(公告)号：US20200079933A1

公开(公告)日：2020-03-12

申请号：US16683682

申请日：2019-11-14

Applicant: Bridgestone Corporation

Inventor： Aya SAIKI ,  Satoshi Hamatani

IPC: C08L7/00 ,  B60C1/00 ,  B60C11/00

Abstract: There is provided a rubber composition for a tire excellent in the low heat generating property and abrasion resistance. To achieve the above object, the rubber composition for a tire according to the present disclosure is a rubber composition comprising a rubber component containing a diene rubber, a carbon black, and a silica, and further comprising a carbon black dispersant composed of a compound represented by the formula (I) or the like, and a compound having a Hansen solubility parameter (HSP) of 27 or more.

公开(公告)号：US20230331880A1

公开(公告)日：2023-10-19

申请号：US18028612

申请日：2021-10-01

Applicant: BRIDGESTONE CORPORATION

Inventor： Aya SAIKI ,  Shinichi MUSHA

IPC: C08F36/08 ,  C08K5/47 ,  C08K5/521 ,  C08K5/098 ,  C08K3/04 ,  C08L7/00 ,  C08K3/22 ,  C08K3/06 ,  B60C9/00 ,  B65G15/34

CPC classification number: C08F36/08 ,  C08K5/47 ,  C08K5/521 ,  C08K5/098 ,  C08K3/04 ,  C08L7/00 ,  C08K3/22 ,  C08K3/06 ,  B60C9/0007 ,  B65G15/34 ,  B60C2009/0021 ,  C08K2003/2296

Abstract: A rubber composition contains a rubber component, an organic phosphoric acid compound having at least one alkyl chain, a vulcanizing agent, and a vulcanization accelerator. A content of a cobalt-containing compound is 0.00 parts by mass or more and less than 0.01 parts by mass as converted to a cobalt amount per 100 parts by mass of the rubber component. A content of N,N-dicyclohexyl-2-benzothiazolylsulfenamide is 0.00 parts by mass or more and less than 0.08 parts by mass per 100 parts by mass of the rubber component. The rubber composition can be used to produce a rubber-metal composite excellent in heat-resistant adhesion between a vulcanized rubber and a metal.

公开(公告)号：US20190177513A1

公开(公告)日：2019-06-13

申请号：US16322621

申请日：2017-08-03

Applicant: BRIDGESTONE CORPORATION ,  OTSUKA CHEMICAL CO., LTD.

Inventor： Satoshi HAMATANI ,  Aya SAIKI ,  Shinya SHINOZAKI ,  Mifuyu UENO ,  Masaki ABE

IPC: C08K13/02 ,  B60C1/00 ,  C08L7/00 ,  C08K3/04 ,  C08K3/36 ,  C08K5/25 ,  C08K5/32 ,  C07C243/38 ,  C07C243/36

Abstract: Provided is a rubber composition comprising: a rubber component containing diene-based rubber; a filler, and a compound represented by formula (I) below: (wherein: A is an aryl group and has at least two polar groups, which may be the same or different from each other; R1 and R2 are each independently at least one substituent selected from a group consisting of a hydrogen atom, an acyl group, an amide group, an alkyl group, a cycloalkyl group, and an aryl group; and further, the substituent may include one or more of O, S, and N atoms), so as to provide a rubber composition excellent in low heat generating property and wear resistance.

公开(公告)号：US20170267818A1

公开(公告)日：2017-09-21

申请号：US15512164

申请日：2015-09-11

Applicant: BRIDGESTONE CORPORATION

Inventor： Aya SAIKI ,  Toshihiro UCHIYAMA

IPC: C08J3/20 ,  C08K5/25 ,  C08K3/36 ,  C08K3/04 ,  C08K9/04

CPC classification number: C08J3/203 ,  C08J3/20 ,  C08J2307/00 ,  C08J2409/06 ,  C08J2411/00 ,  C08J2415/02 ,  C08J2419/00 ,  C08K3/04 ,  C08K3/36 ,  C08K5/25 ,  C08K9/04 ,  C08K9/12 ,  C08L7/00 ,  C08L9/00 ,  C08L91/00

Abstract: Provided is a method for producing a rubber composition that includes a rubber component (A) including natural rubber, at least one filler (B) selected from an inorganic filler and carbon black, and a monohydrazide compound (C) supported on a solid. The monohydrazide compound (C) is represented by general formula (I): R—CONHNH2, where R represents an alkyl group having from 1 to 30 carbon atoms, a cycloalkyl group having from 3 to 30 carbon atoms, or an aryl group. The method comprises compounding in an optional preliminary compounding stage and a plurality of compounding stages, and adding the monohydrazide compound (C) supported on the solid and kneading in the preliminary compounding stage and/or a first compounding stage. Also provided is a rubber composition produced with this method.

公开(公告)号：US20160017121A1

公开(公告)日：2016-01-21

申请号：US14774244

申请日：2014-03-24

Applicant: BRIDGESTONE CORPORATION

Inventor： Aya SAIKI ,  Haruki MINOJIMA

IPC: C08K5/25 ,  C08K3/04

CPC classification number: C08K5/25 ,  C08J3/243 ,  C08J2307/00 ,  C08K3/04 ,  C08L7/00

Abstract: We provide a method for producing a rubber composition that includes a rubber component (A) including natural rubber, at least one filler (B) selected from an inorganic filler and carbon black, and a hydrazide compound (C), the method comprising compounding in an optional preliminary compounding stage and a plurality of compounding stages, and adding the hydrazide compound (C) and kneading in the preliminary compounding stage and/or a first compounding stage, the hydrazide compound (C) being represented by general formula (I): R—CONHNH2, where R represents an alkyl group having from 1 to 30 carbon atoms, a cycloalkyl group having from 3 to 30 carbon atoms, or an aryl group. We also provide a rubber composition produced with this method.

Abstract translation: 本发明提供一种橡胶组合物的制造方法，该橡胶组合物包括橡胶成分（A），其包含天然橡胶，至少一种选自无机填料和炭黑的填料（B）和酰肼化合物（C），该方法包括将 预选配料阶段和多个配混阶段，在预混合阶段和/或第一配混阶段中加入酰肼化合物（C）和捏合，酰肼化合物（C）由通式（I）表示： R-CONHNH 2，其中R表示具有1至30个碳原子的烷基，具有3至30个碳原子的环烷基或芳基。 我们还提供用这种方法生产的橡胶组合物。