A method for the cationization of strengthen people, in this way, cationized strengthen and their applications

摘要

A process for the cationization of starch consists in reacting in the dry state granular starch with a cationic reactant, the reaction being operated at a temperature of 20 to 90 DEG C, in the presence of an alkaline agent. The starches which are thus obtained are not cross-linked and have a high viscosity and have many applications, e.g. as thickeners and water retention agents. Particularly useful cationic reactants are of formula IMAGE in which R1, R2 and R3 are each methyl or ethyl with one of R1, R2 and R3 optionally being a hydrogen atom and X(-) representing Cl(-), Br(-) or I(-) or IMAGE where R1, R2, R3 and X(-) have the same meanings as above and X represents Cl, Br or I.