Title:
STATISTICAL COPOLYMER LATEX AND USE THEREOF, AND PRODUCTION METHOD FOR POLYMER LATEX
Document Type and Number:
WIPO Patent Application WO/2019/211974
Kind Code:
A1
Abstract:
Provided is a technology for improving the dispersion stability of an antioxidant in a chloroprene polymer latex, and improving the heat resistance of the chloroprene polymer latex when the chloroprene polymer latex is dried. This statistical copolymer latex comprises a chloroprene monomeric unit and an unsaturated nitrile monomeric unit, the contained amount of the unsaturated nitrile monomeric unit being 5-20 mass%, wherein the contained amount of the antioxidant as measured by gas chromatography when the statistical copolymer latex is diluted in a tetrahydrofuran solution is 1.0-6.0 mass% with respect to 100 mass% of the statistical copolymer latex, and the antioxidant concentration ratio (surface sample liquid/bottom sample liquid) of liquids sampled from the surface and bottom of the statistical copolymer latex after the statistical copolymer latex has been centrifuged at 14,000 revolutions/min for 20 min is 0.6-1.2.
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Inventors:
ONOZUKA MASAO (JP)
NISHINO WATARU (JP)
ONUKI SUGURU (JP)
YAMAGISHI UICHIRO (JP)
HAGIWARA SHOGO (JP)
NISHINO WATARU (JP)
ONUKI SUGURU (JP)
YAMAGISHI UICHIRO (JP)
HAGIWARA SHOGO (JP)
Application Number:
PCT/JP2019/016241
Publication Date:
November 07, 2019
Filing Date:
April 16, 2019
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
C08L11/02; C08F2/22; C08F236/18; C08K5/18; C09J11/06; C09J109/04; C09J111/02
Domestic Patent References:
| WO2018008509A1 | 2018-01-11 | |||
| WO2016133193A1 | 2016-08-25 |
Foreign References:
| JPH1121317A | 1999-01-26 | |||
| JP2006265302A | 2006-10-05 | |||
| JPH0359043A | 1991-03-14 |
Attorney, Agent or Firm:
WATANABE Kaoru (JP)
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