COMPOSITION USED AS FILLER FOR MAKING PAPER AND METHOD OF MAKING PAPER Russian patent published in 1999 - IPC

FIELD: paper-making industry. SUBSTANCE: composition comprises finely ground particles of inorganic material treated with cellulose derivative or cellulose, said particles being modified by at least one ionic substituent or comprising such ionic substituent. Claimed alkali paper comprises cellulose fiber and above- mentioned composition which is filler. Method of making paper comprises treatment of finely ground particles of inorganic material with cellulose derivative modified by at least one ionic substituent or containing such substituent, and addition of the treated particles to cellulose fiber when making alkali paper. EFFECT: greater degree of whiteness of paper. 35 cl, 4 dwg, 4 dwg, 4 tbl