Title:
統計的共重合体ラテックス及びその用途、並びに、重合体ラテックスの製造方法
Document Type and Number:
Japanese Patent JP7166336
Kind Code:
B2
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.
Inventors:
Masao Onozuka
Wataru Nishino
Toshi Onuki
Uichiro Yamagishi
Shogo Hagiwara
Wataru Nishino
Toshi Onuki
Uichiro Yamagishi
Shogo Hagiwara
Application Number:
JP2020517043A
Publication Date:
November 07, 2022
Filing Date:
April 16, 2019
Export Citation:
Assignee:
Denka Co., Ltd.
International Classes:
C08L11/02; C08F20/42; C08F36/18; C08K5/18; C09J11/06; C09J109/04; C09J111/02
Domestic Patent References:
| JP11021317A | ||||
| JP2006265302A | ||||
| JP3059043A |
Foreign References:
| WO2018008509A1 | ||||
| WO2016133193A1 |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshinori Shimizu
Takeshi Nakatsuka
Tomoya Koshita
Yoshinori Shimizu
Takeshi Nakatsuka
Tomoya Koshita