| abstract |
This invention relates to water-soluble heterocyclic cationic grafted cellulose polymers containing units having the structure (I), wherein R is a residue of a cellulosic polymer containing hydroxyl groups; R1 represents hydrogen or methyl, R2 + is a quaternary amino amide, a quaternary amino ester or a 5- or 6-membered heterocyclic quaternary ring having up to 2 nitrogen atoms in the ring structure; R3 represents an alkylene group containing 3 to 8 carbon atoms optionally substituted by methyl; R4 represents hydrogen or hydroxy; x represents an integer between 1 and 1000 and X represents a halide anion. |