Title:
ACRYLIC RUBBER COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2019/044592
Kind Code:
A1
Abstract:
This acrylic rubber composition is obtained by adding, with respect to 100 parts by weight of an ultracold-resistant acrylic rubber having a glass transition point Tg of -42ºC or less, 5-12.5 parts by weight of silica and 5-15 parts by weight of graphite as fillers. By the use of an ultracold-resistant acrylic rubber, the acrylic rubber composition can be used in an environment having a temperature of -30 to +150ºC, and in addition, by the addition of the specific amounts of silica and graphite as fillers, a bonded piston seal having roll processability and adhesiveness similar to or greater than those of existing seals, and having satisfactory compression set properties, can be formed.
Inventors:
INOUE KOTARO (JP)
Application Number:
PCT/JP2018/030827
Publication Date:
March 07, 2019
Filing Date:
August 21, 2018
Export Citation:
Assignee:
NOK CORP (JP)
International Classes:
C08L33/08; C08K3/04; C08K3/36; C09K3/10; F16D25/12; F16J15/32
Domestic Patent References:
| WO2011010615A1 | 2011-01-27 |
Foreign References:
| JP2017039822A | 2017-02-23 | |||
| JPH09194670A | 1997-07-29 | |||
| JP2015030819A | 2015-02-16 | |||
| JP2010013532A | 2010-01-21 | |||
| JP2008051125A | 2008-03-06 | |||
| JP2018016766A | 2018-02-01 | |||
| JP3382676B2 | 2003-03-04 |
Other References:
See also references of EP 3677643A4
Attorney, Agent or Firm:
YOSHIDA Toshio et al. (JP)
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