Invention Grant
- Patent Title: Vulcanized rubber composition and production method thereof
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Application No.: US15777008Application Date: 2017-08-10
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Publication No.: US10246526B2Publication Date: 2019-04-02
- Inventor: Takuya Kageyama , Takashi Sugimoto , Susumu Innan
- Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.
- Applicant Address: JP Tokyo
- Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
- Current Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.
- Current Assignee Address: JP Tokyo
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2016-172020 20160902
- International Application: PCT/JP2017/029072 WO 20170810
- International Announcement: WO2018/043088 WO 20180308
- Main IPC: C08C19/25
- IPC: C08C19/25 ; C08C19/22 ; C08J3/20 ; C08K5/31 ; C08K5/548 ; C08L7/00 ; C08L9/00 ; B60C1/00 ; C08K3/36

Abstract:
Provided is a method for producing a vulcanized rubber composition, including: a first kneading step of obtaining a kneaded mixture comprising a rubber component comprising at least one selected from the group consisting of natural rubbers and synthetic rubbers, a filler comprising an inorganic filler, and a sulfur-containing silane coupling agent; a second kneading step of adding sulfur and a vulcanization accelerator to the kneaded mixture, followed by kneading, to thereby obtain an unvulcanized rubber composition; and a vulcanization step of vulcanizing the unvulcanized rubber composition to thereby obtain a vulcanized rubber composition having a glass transition temperature of −30° C. to 0° C. by; wherein specific aminoguanidines are added, followed by kneading, in the first kneading step.
Public/Granted literature
- US20180355074A1 VULCANIZED RUBBER COMPOSITION AND PRODUCTION METHOD THEREOF Public/Granted day:2018-12-13
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