04100238 is referenced by 61 patents and cites 8 patents.

A process for preparing permeable membranes which comprises kneading in the molten state two different kinds of thermoplastic synthetic resins which are partly compatible with each other, fabricating the molten mixture into a sheet, film or hollow article, treating the fabricated article with a solvent which is a good solvent for one of the component resins but is a poor solvent for the other to dissolve and remove the former resin, drying the fabricated article, and then stretching it. In place of the resin to be removed by the solvent, rubbers or oligomers having partial compatibility with the resin which remains undissolved can be used.

Title
Process for producing permeable membranes
Application Number
5/669450
Publication Number
4100238
Application Date
March 22, 1976
Publication Date
July 11, 1978
Inventor
Toshihiko Shinomura
Yokohama
JP
Agent
Wenderoth Lind & Ponack
Assignee
Nippon Oil Company
JP
IPC
B29D 27/00
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