Title:
CROSSLINKABLE NITRILE RUBBER COMPOSITION AND CROSSLINKED RUBBER MATERIAL
Document Type and Number:
WIPO Patent Application WO/2020/004284
Kind Code:
A1
Abstract:
Provided is a crosslinkable nitrile rubber composition containing: a nitrile-group-containing copolymer rubber (A) containing α,β-ethylenically unsaturated nitrile monomer units, conjugated diene monomer units, α,β-ethylenically unsaturated monocarboxylic acid ester monomer units, and carboxyl-group-containing monomer units, the content ratio of the α,β-ethylenically unsaturated nitrile monomer units being 8-18 wt%, and the iodine value being 120 or less; silica (B1); clay (B2)p calcium carbonate (B3); and a polyamine-based crosslinking agent; wherein the total content of the silica (B1), the clay (B2), and the calcium carbonate (B3) with respect to 100 parts by weight of the nitrile-group-containing copolymer rubber (A) is 150-200 parts by weight, the ratio of the content of the silica (B1) in the total content of the silica (B1), the clay (B2), and the calcium carbonate (B3) is more than 0 wt% and no more than 50 wt%, and the content ratio of the clay (B2) and the calcium carbonate (B3) in terms of the weight ratio [clay (B2):calcium carbonate (B3)] is 30:70 to 90:10.
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Inventors:
FUKUMINE YOSHIO (JP)
Application Number:
PCT/JP2019/024802
Publication Date:
January 02, 2020
Filing Date:
June 21, 2019
Export Citation:
Assignee:
ZEON CORP (JP)
International Classes:
C08L9/02; C08C19/22; C08K3/26; C08K3/36; C08K5/205; C08K9/04
Foreign References:
| JPH09111048A | 1997-04-28 | |||
| JP2008179671A | 2008-08-07 | |||
| JP2008179671A | 2008-08-07 |
Other References:
See also references of EP 3816221A4
Attorney, Agent or Firm:
TOKOSHIE PATENT FIRM (JP)
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