Title:
HOLLOW POROUS ISOTACTIC POLYPROPYLENE FIBERS AND THEIR PRODUCTION
Document Type and Number:
Japanese Patent JPS5423722
Kind Code:
A
Abstract:
PURPOSE: To obtain hollow porous fibers usable for gas separation, ultrafiltration, or reverse osmosis supports, having an average pore size of 400 W 700, by melt extruding isotactic polypropylene through a specific nozzle, and by taking off at a high speed.
Inventors:
KURITA KAZUO
YASUDA HIROSHI
YASUDA HIROSHI
Application Number:
JP8641577A
Publication Date:
February 22, 1979
Filing Date:
July 18, 1977
Export Citation:
Assignee:
TOYO BOSEKI
International Classes:
D01F6/06; B01D71/06; D01D5/24; D01D5/247; D01F6/04; (IPC1-7): D01D5/24; D01F6/04
Previous Patent: JPS5423721
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