Porous material of polytetrafluoroethylene and process for...

Details Porous material of polytetrafluoroethylene and process for... Porous material of polytetrafluoroethylene and process for...

C - Chemistry, Metallurgy

08

J

C08J 9/00 (2006.01) B01D 71/36 (2006.01) B29C 35/02 (2006.01) B29C 55/00 (2006.01) C08J 5/18 (2006.01)

Patent

CA 2025090

A porous material of polytetrafluoroethylene consisting essentially of fibers of polytetrafluoroethylene. The porous material of PTFE is produced by heat-treating a molded article prepared by paste extruding of PTFE fine powder under such a condition that the heat-treated molded article shows at least one endothermic peak which appears between an endothermic peak position of the fine powder and an endothermic peak position of a sintered product thereof on a differential scanning calorimeter chart and then is stretched along at least one direction.

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