Composite semi-permeable membrane and method for producing same
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United States of America Patent
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Nov 29, 2016
Grant Date -
Jul 21, 2011
app pub date -
Sep 25, 2009
filing date -
Sep 26, 2008
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Abstract
It is an object of the present invention to provide a composite semi-permeable membrane exhibiting excellent chemical resistance and having practical water permeability and salt-blocking property, and a method for producing the same. The present invention relates to a composite semi-permeable membrane, including a porous support and a skin layer formed on a surface of the porous support, wherein the porous support contains a thermosetting resin porous sheet having a three-dimensional network structure and pores communicating with each other and wherein the thermosetting resin porous sheet has an average pore diameter of 0.01 to 0.4 μm.
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