Fluorinated cellulose acetate polymers
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United States of America Patent
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Oct 22, 1985
Grant Date -
N/A
app pub date -
Aug 13, 1984
filing date -
Aug 13, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A new class of compounds, perfluoroacyl modified cellulose acetate polymers, has been synthesized. A novel method of preparation of these compounds is shown. It was discovered that these polymers can be used to form membranes having superior characteristics. The perfluoroacyl modification allows these polymers to be cast as ultrathin membranes resulting in improved gas flux rates while maintaining a high degree of selectivity, improved resistance to water, and the elimination of post treatment procedures. Furthermore these polymers can be spun as hollow fibers.
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