Patent ID: 9518077
Filing Date: 2016-12-13
CPC Classification: A61K,A61L,A61P,C05C,C07H,C08B,C08J,C08L,C25B

Claim Text:
1. A process comprising: contacting chitosan with a solvent selected from the group consisting of water, alcohols and combinations thereof, with heating to a temperature from about 25° C. to about 70° C. to form a chitosan solution having chitosan present in an amount from about 1% to about 10% by weight of the solution; adding to the chitosan solution an acid selected from the group consisting of hydrochloric acid, hypochlorous acid, and combinations thereof, to reduce the pH of the chitosan solution to a pH from about 1 to about 6; applying a positive potential of from about 1.5 volts to about 50 volts to the chitosan solution by the introduction of a cathode and anode into the chitosan solution; forming a chloro-chitosan as a froth in the chitosan solution; and recovering the chloro-chitosan from the froth of the chitosan solution, wherein the chloro-chitosan includes a monomer of the following formula: