Title:
METHOD FOR EVALUATING CHEMICAL STABILITY OF POLYCHLOROPRENE LATEX
Document Type and Number:
WIPO Patent Application WO/2012/121135
Kind Code:
A1
Abstract:
Provided is a method for evaluating the chemical stability of polychloroprene latex with which stability of polychloroprene in the presence of a chemical can be evaluated with high precision. First, an aqueous calcium hydroxide solution or an aqueous calcium nitrate solution having a concentration of 0.05 to 0.40 mass% is added to polychloroprene latex having a solid component concentration of 45 to 65 mass%. Next, the precipitate that has formed is filtered and recovered, the dry mass thereof is measured, and the percentage precipitation (%) is calculated by formula (I). (A is the dry mass (g) of the precipitate, B is the mass (g) of the polychloroprene latex, and C is the solid content concentration of the polychloroprene latex (mass%).)
Inventors:
SUNADA KIYOSHI (JP)
MORI TAKEO (JP)
MORI TAKEO (JP)
Application Number:
PCT/JP2012/055340
Publication Date:
September 13, 2012
Filing Date:
March 02, 2012
Export Citation:
Assignee:
DENKI KAGAKU KOGYO KK (JP)
SUNADA KIYOSHI (JP)
MORI TAKEO (JP)
SUNADA KIYOSHI (JP)
MORI TAKEO (JP)
International Classes:
C08F36/18; C08C1/00; C08J3/00
Foreign 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:
WATANABE Kaoru et al. (JP)
Kaoru Watanabe (JP)
Kaoru Watanabe (JP)
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Claims: