SUPPORTED POLYSILSESQUIOXANE MEMBRANE AND PRODUCTION THEREOF
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United States of America Patent
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Sep 25, 2014
app pub date -
Nov 2, 2012
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Nov 2, 2011
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Abstract
Membranes of the invention comprise a hybrid silica film on a organic polymer support. The silica comprises organic bridging groups bound to two or more silicon atoms, in particular at least 1 of said organic bridging groups per 10 silicon atoms. The membranes can be produced by dry chemistry processes, in particular plasma-enhanced vapour deposition of bridged silane precursors, or by wet chemistry involving hydrolysis of the bridged silane precursors. The membranes are inexpensive and efficient for separation of small molecules and filtration processes.
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