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Patent Searching and Data


Title:
METHOD FOR PRODUCING CARBOXYL-GROUP-CONTAINING NITRILE RUBBER
Document Type and Number:
WIPO Patent Application WO/2018/180978
Kind Code:
A1
Abstract:
Provided is a method for producing carboxyl-group-containing nitrile rubber, the method being provided with a coagulation step for: mixing a monovalent metal salt and a polymer flocculant with a latex of carboxyl-group-containing nitrile rubber that has an iodine value of 120 or lower, the compounding amount of the monovalent metal salt being 3-25 parts by weight and the compounding amount of the polymer flocculant being 0.01-10 parts by weight per 100 parts by weight of the rubber solids fraction in the latex, and the weight ratio of monovalent metal salt/polymer flocculant being within the range of 10-500; and thereby coagulating a carboxyl-group-containing nitrile rubber component.

Inventors:
HERAI TAIKI (JP)
YOSHIMURA TSUTOMU (JP)
Application Number:
PCT/JP2018/011681
Publication Date:
October 04, 2018
Filing Date:
March 23, 2018
Export Citation:
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Assignee:
ZEON CORP (JP)
International Classes:
C08J3/16; C08C1/15; C08F6/22; C08L9/04
Foreign References:
JP2017506699A2017-03-09
JPH02269137A1990-11-02
JP2010528142A2010-08-19
JP2014518300A2014-07-28
JP2015078367A2015-04-23
JP2011099100A2011-05-19
JP2004285293A2004-10-14
Other References:
See also references of EP 3604397A4
Attorney, Agent or Firm:
TOKOSHIE PATENT FIRM (JP)
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