Title:
DEGRADABLE RUBBER COMPOSITION, RUBBER MEMBER, SEALING MEMBER, AND METHOD FOR PRODUCING DEGRADABLE RUBBER COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2024/019035
Kind Code:
A1
Abstract:
Provided are: a degradable rubber composition which has sealing performance required of rubber members of sealing members and which after having been exposed to a fluid, e.g., water, over a given time period, can break into pieces even without receiving external stress and is thereby made easily removable; a rubber member; a sealing member; and a method for producing the degradable rubber composition. The degradable rubber composition comprises a degradable rubber component including a millable rubber material composed of hydrolyzable rubber molecules and an acidic hydrolysis accelerator which is a powder that becomes acidic upon contact with water and which accelerates the hydrolysis of the rubber molecules upon contact with water. The acidic hydrolysis accelerator is contained in an amount of 40 parts by mass or more per 100 parts by mass of the degradable rubber component.
Inventors:
KOBAYASHI TATSUKI (JP)
TAKAHARA KAZUHIRO (JP)
KOBAYASHI TAKUMA (JP)
EBIHARA YASUSHI (JP)
TOSE TAKENORI (JP)
KUBOTA KYOSUKE (JP)
TAKAHARA KAZUHIRO (JP)
KOBAYASHI TAKUMA (JP)
EBIHARA YASUSHI (JP)
TOSE TAKENORI (JP)
KUBOTA KYOSUKE (JP)
Application Number:
PCT/JP2023/026218
Publication Date:
January 25, 2024
Filing Date:
July 18, 2023
Export Citation:
Assignee:
KOKOKU INTECH CO LTD (JP)
KUREHA CORP (JP)
KUREHA CORP (JP)
International Classes:
C08L101/02; E21B33/12; E21B43/00
Domestic Patent References:
| WO2018198881A1 | 2018-11-01 |
Foreign References:
| JP2017114989A | 2017-06-29 | |||
| JP2016098503A | 2016-05-30 | |||
| JP2011213374A | 2011-10-27 | |||
| JP2014041973A | 2014-03-06 | |||
| JPS6230110A | 1987-02-09 | |||
| JP2015108279A | 2015-06-11 | |||
| JP2015143333A | 2015-08-06 | |||
| JP2000230073A | 2000-08-22 |
Attorney, Agent or Firm:
KAJI Toshikazu et al. (JP)
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