METHOD OF FILLER REMOVAL FROM WASTE PAPER HAVING PAST DYE REMOVAL STAGE

摘要

FIELD: paper industry. SUBSTANCE: for waste paper treatment aqueous solution of polydimethylaminoethylmethacrylate or copolymer of polyacrylic acid, dimethylaminopropylamine and N-methylpyrrolidine, or copolymer of dimethylaminoethylmethacrylate, ethylacrylate and methacrylic acid, or aqueous-spirituous solution of copolymer of acrylic acid, dimethylaminoethylmethacrylate and methylmethacrylate were used as an organic compound at concentration 0.2 g/kg air-dried paper mass. EFFECT: improved method of filler removal.