Title:
PRODUCTION OF POROUS FORM
Document Type and Number:
Japanese Patent JPH051168
Kind Code:
A
Abstract:
PURPOSE:To obtain a porous form markedly improved in production efficiency by wet treatment of polytetrafluoroethylene with a specific perfluorocarbon followed by dissolving the resultant polytetrafluoroethylene in said perfluorocarbon under heating, and then forming the gel. CONSTITUTION:Firstly, a polytetrafluoroethylene(PTFE) prepared by modifying PTFE with pref. <=2wt.% of a copolymer is put to wet treatment with a perfluorocarbon having a boiling point of >=170 deg.C. Then, the resultant PTFE is dissolved in said perfluorocarbon heated to its boiling point (i.e., >=170 deg.C) to form a PTFE gel, which is then formed to obtain the objective porous form.
Inventors:
SHIMIZU MASAZUMI
Application Number:
JP15486891A
Publication Date:
January 08, 1993
Filing Date:
June 26, 1991
Export Citation:
Assignee:
HITACHI CABLE
International Classes:
C08J9/00; C08L27/18; (IPC1-7): C08J9/00; C08L27/18
Attorney, Agent or Firm:
Nobuo Kinutani
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