Process for preparing membranes
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United States of America Patent
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Mar 7, 2017
Grant Date -
Jul 30, 2015
app pub date -
Jun 26, 2013
filing date -
Jun 26, 2012
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Abstract
A process for preparing a composite membrane comprising the steps: a) applying a radiation-curable composition to a porous support; b) irradiating the composition and thereby forming a gutter layer of cured polymer; and c) forming a discriminating layer on the gutter layer; wherein the radiation-curable composition comprises a partially crosslinked, radiation-curable polymer comprising epoxy groups and siloxane groups, a photoinitiator and is substantially free from mono-epoxy compounds. Composite membranes and gas separation cartridges are also claimed.
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