Patent ID: 7186823

Claim:
A cationic starch product, characterised in that the starch product is a water soluble reaction product of starch and a cationising reagent, whereby in the making of the cationic reagent, which is made from choline, has reacted with a part of the hydroxyl groups of the starch according to the structure formula (VI) and in which structure formulas (VI) and (VII) St represents the polymer structure of starch; the structure component A is a hydrocarbon chain, which has one of the following formulas —(CR 1 R 2 ),—O—, where n=1, 2, 3, . . . (i) —[(CR 1 R 2 ) n O] m —, where n=1, 2, 3, . . . and m=1, 2, 3, . . . (ii) —CR 1 R 2 ) n —S—, where n=1, 2, 3, . . . (iii) —[(CR 1 R 2 ) n S] m —, where n=1, 2, 3, . . . and m=1, 2, 3, . . . (iv) —(CR 1 R 2 ) n— NR 3 —, where n=1, 2, 3, . . . (v) —[(CR 1 R 2 ) n NR 3 ] m —, where n=1, 2, 3, . . . and m=1, 2, 3, (vi) and the substituents R, R 1 , R 2 , R 3 are hydrogen alkyl, cycloalkyl and/or aryl groups, which groups can contain heteroatoms, selected from the group consisting of oxygen, nitrogen, and sulfur and/or the A may be an organic group which contains in its chain structure substituted or unsubstituted aromatic or heteroaromatic groups, which can be attached to each other via alkyl groups or heteroatoms or substitutents containing the aromatic or heteroaromatic groups.