Title of Invention | POLYACRYLAMIDE GRAFTED DEXTRAN POLYMERIC FLOCCULANT AND ITS PROCESS OF MANUFACTURE |
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Abstract | Polymeric flocculants, in particular hydrolysed and unhydrolysed polyacrylamide grafted dextran. The polymeric flocculant .comprises atleast one of hydrolysed and unhydrated polyacrylamide grafted dextran having molecular weight in the range of 1.5 107 to 2.0 x 107 preferably 1.963 x107 g/mole conversion efficiency of 75.5 to 90 preferably 86.45 percentage of nitrogen in the range of 15.5 to 17 preferably 16.39 and degree of substitution in the range of 85 to 90 preferably 86.15. The polymeric flocculants of the degree of substitution to provide for the best flocculation characteristics. Importanly, the selective synthesized hydrolysed and unhydrolysed grafted polymer and dextran, would have, highest flocculation efficiency among various hydrolysed and unhydrolysed graft copolymers of other polysaccharides. The invention is further directed to a process for manufacture of the flocculants involving the high molecular weight detran polyacrylamide . The invention is found useful in water/fluid treatment involving above polymeric flocculants. |
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631-KOL-2004-(22-03-2012)-CORRESPONDENCE.pdf
631-KOL-2004-(22-03-2012)-FORM-27.pdf
631-KOL-2004-CORRESPONDENCE.pdf
631-kol-2004-granted-abstract.pdf
631-kol-2004-granted-claims.pdf
631-kol-2004-granted-correspondence.pdf
631-kol-2004-granted-description (complete).pdf
631-kol-2004-granted-drawings.pdf
631-kol-2004-granted-examination report.pdf
631-kol-2004-granted-form 1.pdf
631-kol-2004-granted-form 18.pdf
631-kol-2004-granted-form 2.pdf
631-kol-2004-granted-form 3.pdf
631-kol-2004-granted-letter patent.pdf
631-kol-2004-granted-reply to examination report.pdf
631-kol-2004-granted-specification.pdf
Patent Number | 221743 | ||||||||||||
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Indian Patent Application Number | 631/KOL/2004 | ||||||||||||
PG Journal Number | 27/2008 | ||||||||||||
Publication Date | 04-Jul-2008 | ||||||||||||
Grant Date | 03-Jul-2008 | ||||||||||||
Date of Filing | 06-Oct-2004 | ||||||||||||
Name of Patentee | INDIAN INSTITUTE OF TECHNOLOGY | ||||||||||||
Applicant Address | KHARAGPUR 721302 | ||||||||||||
Inventors:
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PCT International Classification Number | B01D 51/02 | ||||||||||||
PCT International Application Number | N/A | ||||||||||||
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PCT Conventions:
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