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：US20210108048A1

公开(公告)日：2021-04-15

申请号：US16464508

申请日：2017-11-29

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

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

IPC: C08K5/30 ,  C08K3/04 ,  C07C243/38 ,  B60C1/00 ,  B60C11/00

Abstract: An additive for rubber that enables a rubber composition to have excellent low heat generating property and processability, a rubber composition containing the additive for rubber, and a tire using the same are provided. A rubber composition comprises a hydrazone compound represented by the following Formula (I): where R1 and R2 each independently represent a hydrogen atom, an alkyl group with a carbon number of 1 to 16, or an alkenyl group with a carbon number of 2 to 6, and A represents a group represented by the following Formula (A-1) or Formula (A-2):

公开(公告)号：US20240317978A1

公开(公告)日：2024-09-26

申请号：US18574520

申请日：2022-06-29

Applicant: OTSUKA CHEMICAL CO., LTD.

Inventor： Mifuyu UENO ,  Yuki OKABE ,  Shinya SHINOZAKI

IPC: C08L9/00 ,  B60C1/00 ,  C08K3/36 ,  C08K5/3432 ,  C08L7/00

CPC classification number: C08L9/00 ,  B60C1/0025 ,  C08K3/36 ,  C08K5/3432 ,  C08L7/00 ,  C08L2201/08

Abstract: An object of the present invention is to provide a rubber composition with excellent low heat build-up properties, the rubber composition comprising a filler and at least one compound selected from the group consisting of a diene rubber component, a compound represented by formula (1), and a compound represented by formula (2).