Method of producing cation-exchange membrane having roughed surface
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United States of America Patent
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-
Aug 27, 1985
Grant Date -
N/A
app pub date -
Nov 9, 1983
filing date -
Nov 10, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of producing a cation-exchange membrane having roughed surface which is characterized in mixing silica powder with water to give a suspended or pasty mixture, supporting the resultant mixture on art paper or filter paper, drying the mixture to form silica powder layer, adhering with heating and pressing the silica powder layer on surface of membrane composed of perfluorocarbon polymer, and removing the silica powder layer formed on the surface of said membrane with caustic alkali aqueous solution.
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- Non-US Classification not provided for expired patents
Cited Art Landscape
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- Citation Ranking not provided for expired patents
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