CATION-EXCHANGE CARBON BODY AND ITS PRODUCTION
- 申请公布号:
- JPH0394842(A)
- 申请号:
- JP19890229859
- 申请日期:
- 1989.09.05
- 申请公布日期:
- 1991.04.19
- 申请人:
- NISSHINBO IND INC
- 发明人:
- SAITO KAZUO
- 分类号:
- C08J5/20;B01J39/24;C01B31/16;C08G73/00
- 主分类号:
- C08J5/20
- 摘要:
- PURPOSE:To obtain the cation-exchange carbon body with the material not deteriorated before an exchange group is introduced by heating polycarbodiimide resin to obtain a carbonized precursor, sulfating and oxidizing the precursor. CONSTITUTION:The polycarbodiimide resin contg. the homopolymer or copolymer consisting of at least one kind of repeating unit shown by the formula (-R-N=C=N-)n is produced from an org diisocyanate. The resin is dissolved in a solvent (e.g. tetrachloroethylene), and the soln. is formed into a desired shape such as film. The formed resin is heated at 500-1500 deg.C in vacuum or in an inert gas atmosphere to obtain a high strength carbonized precursor. The precursor is heated in concd. sulfuric acid or fuming sulfuric acid, sulfated and oxidized to obtain a cation-exchange body. The material is not deteriorated by this method before an exchange group is introduced.
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