Treatment of waste printed papers with surface active polymeric compositions to produce brighter pulp

摘要: This invention relates to a treatment process of wastepaper for making printing grade paper from newsprints and officewastes using surface active polymer composition including novel terpolymer. In particular, the is concerned with removing ink an aqueous pulp slurry by treating composing two three comonomers in which at least one hydrophobe another hydrophil, having glass transition temperature ranging about 105° C. 170° C., alkali metal salts said combination fatty oil alkoxy derivative or acid soaps.