Title:
NBR COMPOSITION AND RUBBER MATERIAL FOR SEALING
Document Type and Number:
WIPO Patent Application WO/2012/026283
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an NBR composition that does not substantially include a causal substance for insoluble material, prevents the generation of insoluble material caused by fuel extraction, has excellent ozone resistance and kneading machine discharge properties, and achieves a first compression permanent set deformation and a second compression permanent set deformation of 46% or lower. The NBR composition is characterized by being obtained by mixing an acrylonitrile-butadiene rubber (NBR) and a polyvinyl chloride (PVC) and by either not combining a causal substance for insoluble material with a polymer of 100 parts by weight containing 15.70-17.50 wt% of PVC, or combining a maximum of 0.15 parts by weight max. of said causal substance with said polymer.
Inventors:
SANO HIROYUKI (JP)
Application Number:
PCT/JP2011/067355
Publication Date:
March 01, 2012
Filing Date:
July 28, 2011
Export Citation:
Assignee:
NOK CORP (JP)
SANO HIROYUKI (JP)
SANO HIROYUKI (JP)
International Classes:
C08L9/02; C08K5/09; C08L27/06; C08L91/06; C09K3/10; F16J15/10
Foreign References:
| JPH04142347A | 1992-05-15 | |||
| JPS57125227A | 1982-08-04 | |||
| JPS63256680A | 1988-10-24 | |||
| JPH03152141A | 1991-06-28 | |||
| JPS56139541A | 1981-10-31 | |||
| JP2000095899A | 2000-04-04 | |||
| JPS63256680A | 1988-10-24 | |||
| JP2000095899A | 2000-04-04 | |||
| JPH11304058A | 1999-11-05 | |||
| JP2001172433A | 2001-06-26 | |||
| JP2006022220A | 2006-01-26 |
Other References:
See also references of EP 2610297A4
Attorney, Agent or Firm:
MARUYAMA EIICHI (JP)
Maruyama Eiichi (JP)
Maruyama Eiichi (JP)
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Claims: