PAPPERSTILLSATSMEDEL I FORM AV XANTHERADE STERKELSEAMINER SAMT SETT ATT OKA VATSTYRKAN OCH TORRSTYRKAN HOS EN PAPPERSPRODUKT

摘要

Novel amphoteric starch derivatives, xanthated starch amines, have been employed as wet-end paper additives for improving both wet and dry strength. They are easily repulpable, readily biodegradable, effective in a broad range of furnish pH's, and are competitive on a cost/performance basis with commercial systems.