Patent ID: 11919975
Assignee: MEDTRADE PRODUCTS LIMITED
Field: Pharmaceuticals (Chemistry)
Classification: CPC C  A | IPC A  C

Claim 5:
6. A process for producing a low endotoxin alkali chitosan, chitin or a derivative thereof, the process comprising the steps of:
a. contacting chitosan, chitin, a chitosan derivative or a chitin derivative with an alkali solution having a concentration of from 0.01M to 0.2M to form a mixture, wherein the chitosan derivative or chitin derivative is selected from the group consisting of carboxymethyl chitosan, hydroxyl butyl chitin, N-acyl chitosan, O-acyl chitosan, N-alkyl chitosan O-alkyl chitosan, N-alkylidene chitosan, O-sulfonyl chitosan, sulfated chitosan, phosphorylated chitosan, nitrated chitosan, alkalichitin, alkalichitosan, and metal chelates with chitosan; and
b. immediately drying the mixture.