Title:
ポリクロロプレンラテックスの化学的安定性の評価方法
Document Type and Number:
Japanese Patent JP5867748
Kind Code:
B2
Abstract:
Provided is a method for evaluating of the chemical stability of a polychloroprene latex that permits evaluation of the chemical stability of polychloroprene at high accuracy. First, an aqueous calcium hydroxide or calcium nitrate solution at a concentration of 0.05 to 0.40 mass % is added to a polychloroprene latex having a solid matter concentration of 45 to 65 mass %. The generated precipitate is then collected by filtration and the dry mass is determined, and the precipitation rate (%) is calculated according to the following Formula (I). Precipitation rate ( % ) = A { B × ( C / 100 ) } × 100 ( I ) (wherein, A represents the dry mass (g) of the precipitate; B represents the mass (g) of the polychloroprene latex, and C represents the solid matter concentration (mass %) of the polychloroprene latex.)
Inventors:
Kiyoshi Sunada
Mori Takeo
Mori Takeo
Application Number:
JP2013503494A
Publication Date:
February 24, 2016
Filing Date:
March 02, 2012
Export Citation:
Assignee:
Denka Co., Ltd.
International Classes:
C08F36/18; C08C1/00; C08J3/00
Domestic Patent References:
| JPS5433584A | 1979-03-12 | |||
| JPH01174512A | 1989-07-11 | |||
| JPH06100607A | 1994-04-12 | |||
| JPH08319314A | 1996-12-03 | |||
| JP2002241412A | 2002-08-28 | |||
| JP2006225527A | 2006-08-31 | |||
| JP2007126613A | 2007-05-24 | |||
| JP2007269863A | 2007-10-18 |
Attorney, Agent or Firm:
Kaoru Watanabe
Miwako Inoue
Keiko Omori
Miwako Inoue
Keiko Omori