Cationically modified, cellulose-containing materials
Patent 4178438 Issued on December 11, 1979. Estimated Expiration Date: 
September 11, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 11, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2415043 2585115 2589245 2882185 3051691 3311594 3346519 3388118 3652540 3772259 InventorsApplicationNo. 05/941823 filed on 09/11/1978US Classes:536/30, Cellulose derivatives210/502.1, Sorptive component containing210/691, From aqueous material210/917, Color536/31Nitrogen containing hetero ring (e.g., morpholine, etc.)ExaminersPrimary: Griffin, Ronald W.Attorney, Agent or FirmInternational ClassesC02F 1/28 (20060101)B01J 39/00 (20060101) B01J 39/22 (20060101) C08B 11/145 (20060101) C08B 11/00 (20060101) Foreign Application Priority Data1975-11-14 CHAbstractA novel process for the purification of industrial effluents, wherein the effluents are brought into contact with cationically modified, cellulose-containing materials, the cationic constituent of which is bonded to the cellulose part via the grouping of the general formulain which the nitrogen belongs to an amide group of the cationic constituent and the oxygen is bonded to the cellulose part, and the cationically modified, cellulose-containing materials possessing such a constituent, are disclosed.Field of SearchCellulose derivatives |
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