Process for making a composite membrane
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United States of America Patent
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Oct 26, 1993
Issued Date -
N/A
app pub date -
Apr 16, 1992
filing date -
Apr 7, 1986
priority date (Note) -
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Abstract
A composite membrane comprises a first material which defines a porous matrix and a second material blocking the pores of the matrix, the second material having been crosslinked by irradiation, preferably with UV radiation, when in the pores. Preferably a crosslinking agent is mixed with the second material. The porous matrix may be made by leaching a water soluble material from a blend of that material with polyethylene. The second material may be polymerizable, for example an acrylic acid derivative.
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