| Title of Invention | A PROCESS FOR THE PREPARATION OF CRAFT COPOLYMERS OF CATIONIC POLYSACCHARIDES. |
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| Abstract | Abstract The invention provides a process for the preparation of graft ' copolymers of cationic polysaccharides consisting of the following steps: (a) Preparing graft copolymer of a polysaccharide and an unsaturated taonqmer by (i) treating the polysaccharide with part of the free radical' initiator system particularly the reducing agents(preferably in the presence of a hydrotrope in aqueous medium), Hi) reacting the polysaccharide with the monomer and then in the presence of an oxidizing agent, and (ill) recovering the graft copolymer. (b) the graft copolymer recovered in step(a) is brought into contact with quaternary amine or other amines and recovering cationic graft copolymer from the reaction mass. |
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308-BOM-1991-CANCELLED PAGES.pdf
308-BOM-1991-CORRESPONDENCE(IPO).pdf
308-BOM-1991-CORRESPONDENCE(RECEIVED).pdf
308-BOM-1991-FORM 2(COMPLETE).pdf
308-BOM-1991-FORM 2(GRANTED).pdf
| Patent Number | 174512 | ||||||||||||
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| Indian Patent Application Number | 308/BOM/1991 | ||||||||||||
| PG Journal Number | 41/2012 | ||||||||||||
| Publication Date | 12-Oct-2012 | ||||||||||||
| Grant Date | 23-Jun-1995 | ||||||||||||
| Date of Filing | 18-Oct-1991 | ||||||||||||
| Name of Patentee | HINDUSTAN LEVER LIMITED | ||||||||||||
| Applicant Address | HINDUSTAN LEVER HOUSE, 165/166 BACKBAY RECLAMATION, BOMBAY-400020. | ||||||||||||
Inventors:
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| PCT International Classification Number | C08F251/00 | ||||||||||||
| PCT International Application Number | N/A | ||||||||||||
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