Abstract: A novel solvent-free method for the cationization of a legume starch, and uses of the cationic starches thus obtained, in aqueous compositions and the paper industry, including the folding carton or paper thus obtained.

Abstract: A novel solvent-free method for the cationisation of a legume starch, and uses of the cationic starches thus obtained, in aqueous compositions and the paper industry, including the folding carton or paper thus obtained.

Abstract: The invention relates to a novel solvent-free method for the cationisation of a legume starch. The invention also relates to the cationic starches of legume origin thus obtained. The invention further relates to the use of the cationic starches thus obtained, originating from legumes, in the paper industry and, in particular, in the wet end of a paper-making machine. In addition, the invention relates to compositions, such as aqueous compositions, containing at least one cationic starch of legume origin. Finally, the invention relates to the folding carton or paper thus obtained, containing at least one cationic starch originating from legumes.

Abstract: The invention concerns the use, as paper-making additive other than a standard mass additive or water treatment additive, of a starchy composition containing at least a cationic starch material. The invention is characterised in that said composition has: a fixed nitrogen proportion not more than 2%, preferably between 0.1 and 1.9%, said percentages being expressed in dry weight relative to the composition dry weight, and a viscosity, determined in accordance with a test A, of not more than 1600 mPa.s, preferably between 5 and 1500 mPa.s. Some of the starchy compositions, selected on the basis of their fixed nitrogen proportion and their viscosity, are also useful in numerous other fields of application, and in particular as mass additives in paper-making.