Title:
METHOD FOR PURIFYING ALKYLNAPHTHALENE FORMALDEHYDE POLYMER
Document Type and Number:
WIPO Patent Application WO/2011/125326
Kind Code:
A1
Abstract:
Disclosed is a commercially advantageous method for purifying an alkylnaphthalene formaldehyde polymer that is reduced in the metal content.
Specifically disclosed is a method for purifying an alkylnaphthalene formaldehyde polymer, which is characterized in that a solution that contains an organic solvent and an alkylnaphthalene formaldehyde polymer obtained by having an alkylnaphthalene and formaldehyde react with each other is brought into contact with an acidic aqueous solution.
Inventors:
OKADA YU (JP)
HIGASHIHARA GO (JP)
HIGASHIHARA GO (JP)
Application Number:
PCT/JP2011/002025
Publication Date:
October 13, 2011
Filing Date:
April 05, 2011
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
OKADA YU (JP)
HIGASHIHARA GO (JP)
OKADA YU (JP)
HIGASHIHARA GO (JP)
International Classes:
C08G10/02
Foreign References:
| JP2006259249A | 2006-09-28 | |||
| JP2002179751A | 2002-06-26 | |||
| JP2001019731A | 2001-01-23 | |||
| JPH051157A | 1993-01-08 | |||
| JPH01192586A | 1989-08-02 | |||
| JPS61223016A | 1986-10-03 | |||
| US3842038A | 1974-10-15 |
Attorney, Agent or Firm:
SUGIMURA, KENJI (JP)
Kenji Sugimura (JP)
Kenji Sugimura (JP)
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