Title:
DEGRADABLE RUBBER COMPOSITION, RUBBER MEMBER, SEALING MEMBER, AND METHOD FOR PRODUCING DEGRADABLE RUBBER COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2024/019036
Kind Code:
A1
Abstract:
The present invention provides: a degradable rubber composition with which it is possible to control the time until degradation starts after the composition is immersed in a fluid such as water; a rubber member; a sealing member; and a method for producing the degradable rubber composition. This degradable rubber composition contains: a degradable rubber component that includes a hydrolyzable rubber molecule; a hydrolysis accelerator that accelerates hydrolysis of the rubber molecule upon contact with water; and a hydrolysis inhibitor that inhibits hydrolysis of the rubber molecule. The hydrolysis accelerator contains an acidic hydrolysis accelerator that is a powder that exhibits acidity upon contact with water. The acidic hydrolysis accelerator is contained at a quantity of 40 parts by mass or more relative to 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/JP2023/026219
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 | |||
| JP2015143458A | 2015-08-06 | |||
| 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)
Download PDF: