Title:
METHOD FOR CHEMICAL IMPROVEMENT OF FLUOROCARBON POLYMER, COATING FILM CONTAINING IMPROVED POLYMER FOR METAL BASE MATERIAL AND ELECTRODE FOR LITHIUM ION BATTERY
Document Type and Number:
Japanese Patent JP3459809
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for chemically improving a fluorocarbon polymer so as to adhere more tightly to a metal base material by reacting a specific fluorocarbon polymer with an oxidizing agent after partially dehydrofluorinating the specific fluorocarbon polymer using a base.
SOLUTION: A fluorocarbon polymer (A) of the formula (X and X' are each H, a halogen, especially F or Cl, or a perhalogenated alkyl, especially a perfluoroalkyl) is partially dehydrofluorinated using a base (B), and subsequently the resultant polymer is reacted with an oxidizing agent to form another polymer. Thus, the component A is chemically improved. preferably, the component A is in the form of an aqueous dispersion system, for example, emulsion or suspension. Preferably, the oxidation reaction is performed using hydrogen peroxide in a heterogeneous aqueous medium, or using a hypochlorite anion and subsequently an alkali metal hypochlorite having, for example, sodium or potassium, or the like, as a corresponding cation.
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Inventors:
Thierry Pascal
Application Number:
JP2000149663A
Publication Date:
October 27, 2003
Filing Date:
May 22, 2000
Export Citation:
Assignee:
ATOFINA
International Classes:
C08J7/04; C08F8/06; C08F8/26; C08J3/12; C08J7/12; H01M4/62; H01M4/131; H01M4/133; H01M4/66; (IPC1-7): C08F8/06; C08F8/26; C08J3/12; C08J7/04; H01M4/02; H01M4/62; H01M10/40
Domestic Patent References:
| JP53132094A |
Other References:
【文献】米国特許4678842(US,A)
Attorney, Agent or Firm:
Takashi Koshiba