Fluorinated cellulose acetate polymers

Details Fluorinated cellulose acetate polymers Fluorinated cellulose acetate polymers

1984-08-13

1985-10-22

Griffin, Ronald W.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 69, 536 76, 2105002, C08B 306, C08B 322

Patent

active

045490120

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.

REFERENCES:
patent: 4008047 (1977-02-01), Petersen
patent: 4035459 (1977-07-01), Kesting
patent: 4214020 (1980-07-01), Ward et al.
patent: 4305823 (1981-12-01), Batzer et al.
patent: 4318785 (1982-03-01), Gunjima et al.
Journal of Applied Polymer Science, vol. 29, No. 5, May 1984, pp. 1743-1748.

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