Title:
NITRILE GROUP-CONTAINING COPOLYMER RUBBER
Document Type and Number:
WIPO Patent Application WO/2018/168396
Kind Code:
A1
Abstract:
Provided is a nitrile group-containing copolymer rubber which contains 10-60 wt% of an α,β-ethylenically unsaturated nitrile monomer unit and 1-60 wt% of an α,β-ethylenically unsaturated dicarboxylic acid monoester monomer unit, and has an iodine value of 120 or less, wherein a productivity index Ipro (Ipro=CC×SA), which is the product of the carboxyl group content CC, that is, the number of moles of a carboxyl group per 100 g of the nitrile group-containing copolymer rubber, and the absorbance area SA of a carboxylic acid anhydride group as determined by infrared spectroscopy, is 0.0030 or less.
Inventors:
SHIONO ATSUHIRO (JP)
Application Number:
PCT/JP2018/006684
Publication Date:
September 20, 2018
Filing Date:
February 23, 2018
Export Citation:
Assignee:
ZEON CORP (JP)
International Classes:
C08F220/44; C08F236/04; C08K3/30; C08K5/17; C08L33/18
Domestic Patent References:
| WO2005030859A1 | 2005-04-07 |
Foreign References:
| JP2016006132A | 2016-01-14 | |||
| JP2010144176A | 2010-07-01 | |||
| JP2001055471A | 2001-02-27 |
Other References:
See also references of EP 3597677A4
Attorney, Agent or Firm:
TOKOSHIE PATENT FIRM (JP)
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