Polyvinyl alcohol-based hollow fiber membrane and process for pr

Details Polyvinyl alcohol-based hollow fiber membrane and process for pr Polyvinyl alcohol-based hollow fiber membrane and process for pr

1996-05-31

1998-08-04

Lee, Helen

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428400, 21050023, 21050027, 21050042, B01M 3321, B02G 300

Patent

active

057890811

ABSTRACT:
A polyvinyl alcohol-based hollow fiber membrane having a ratio between the size of particles of 90% rejection and that of particles of 10% rejection of not more than 5, thus proving to have a sharp fractionating property, is produced by a process which comprises, on producing a polyvinyl alcohol-based hollow fiber membrane by dry-jet wet spinning or wet spinning, using a spinneret having heat insulating structure.

REFERENCES:
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patent: 4316009 (1982-02-01), Rinaldi et al.
patent: 5132059 (1992-07-01), Takahashi et al.
patent: 5173189 (1992-12-01), Hoshi et al.
patent: 5380588 (1995-01-01), Nishiyama et al.
patent: 5455114 (1995-10-01), Ohmory et al.

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