| abstract |
Process for the mass sizing of paper, cardboard and cardboard by adding anionically adjusted aqueous dispersions of reactive sizing agents, at least one retention agent and at least one cationic polymer to an aqueous slurry of cellulose fibers and dewatering of the paper stock, and use of cationic polymers from the group of polymers containing vinylamine units, Polymers containing vinyl guanidine units, polyethyleneimines, polyamidoamines grafted with ethyleneimine and / or polydiallyldimethylammonium chlorides as fixatives and promoters for anionically adjusted aqueous dispersions of a reactive sizing agent in the mass sizing of paper, cardboard and cardboard. |