Hollow fiber membrane and method of producing the same

Details Hollow fiber membrane and method of producing the same Hollow fiber membrane and method of producing the same

2007-02-27

2007-02-27

Menon, Krishnan S. (Department: 1723)

Liquid purification or separation

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Material

C210S500270, C210S500420, C210S650000, C264S209100, C264S209500

Reexamination Certificate

active

11155602

ABSTRACT:
A method of producing a hollow fiber membrane includes discharging a polyvinylidene fluoride solution comprising a polyvinylidene fluoride resin and a poor solvent at a temperature above a phase separation temperature into a cooling bath at a temperature below the phase separation temperature to coagulate the polyvinylidene fluoride resin. The hollow fiber membrane comprises a polyvinylidene fluoride resin having spherical structures that have an average diameter in the range of 0.3 to 30 μm.

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