Title:
ACRYLIC RUBBER COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2012/117849
Kind Code:
A1
Abstract:
An acrylic rubber composition that contains, per 100 parts by weight of a carboxyl-containing acrylic rubber, 0.05 to 5 parts by weight of a diurethane compound represented by the general formula: R2(SO2)m(CH2)nOCONHR1NHCOO(CH2)n(SO2)mR2 [wherein R1 is a divalent organic group; R2 is a group capable of forming a carbamate structure which is decomposable by the action of a basic vulcanization accelerator; n is 0, 1 or 2; and m is 0 or 1], 0.3 to 3 parts by weight of a diaminodiphenyl ether compound, and 0.08 to 1.2 parts by weight of an N-containing heterocyclic compound, and that is free from 1,3-di-o-tolylguanidine. This acrylic rubber composition can be vulcanized at a high speed without using 1,3-di-o-tolylguanidine, which has a disadvantage of generating o-toluidine, and exhibits excellent scorch stability. Further, a molded product of the acrylic rubber composition sufficiently satisfies compression set resistance characteristics requisite to sealing parts.
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Inventors:
KOGA ATSUSHI (JP)
SANO HIROYUKI (JP)
SANO HIROYUKI (JP)
Application Number:
PCT/JP2012/053451
Publication Date:
September 07, 2012
Filing Date:
February 15, 2012
Export Citation:
Assignee:
NOK CORP (JP)
KOGA ATSUSHI (JP)
SANO HIROYUKI (JP)
KOGA ATSUSHI (JP)
SANO HIROYUKI (JP)
International Classes:
C08L33/06; C08K5/18; C08K5/205; C08K5/3462; F16J15/10
Domestic Patent References:
| WO2009096545A1 | 2009-08-06 | |||
| WO2008069218A1 | 2008-06-12 | |||
| WO2003004563A1 | 2003-01-16 | |||
| WO2009096545A1 | 2009-08-06 |
Foreign References:
| JP2009097018A | 2009-05-07 | |||
| JP2004175841A | 2004-06-24 |
Other References:
See also references of EP 2568011A4
Attorney, Agent or Firm:
YOSHIDA Toshio et al. (JP)
Toshio Yoshida (JP)
Toshio Yoshida (JP)
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Claims: