Phosphorylated cellulose ester membrane for use in separation or

Details Phosphorylated cellulose ester membrane for use in separation or Phosphorylated cellulose ester membrane for use in separation or

1974-05-13

1976-06-08

Morris, Theodore

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

106196, 106177, 210500M, C08L 112, C08L 120, C08B 700

Patent

active

039622126

ABSTRACT:
A novel phosphorylated cellulose ester membrane containing 0.1 to 10 % of phosphorus and having a selective permeability. This permselective phosphorylated cellulose ester membrane consists essentially of a phosphorylated cellulose ester obtained by reacting a phosphorylating reagent such as phosphorus oxychloride with a lower aliphatic acid ester of cellulose, which has a reactive hydroxyl group, in an organic solvent, and then hydrolyzing the resulting ester. The membrane can be used widely in separating materials by processes such as reverse osmosis, ultrafiltration, dialysis, electrodialysis, and the like.

REFERENCES:
patent: 1962828 (1934-06-01), Malm
patent: 2981730 (1961-04-01), Martin
patent: 3140256 (1964-07-01), Martin
patent: 3567809 (1971-03-01), Ueno et al
Journal of Polymer Science, vol. 11, pp. 201-205, (1973).

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