| 摘要 |
The present invention relates to a process for trash removal or pitch control in the paper manufacture, in which process as agent for the trash removal or pitch control cationic groups containing polymers of 50 to 100%-wt. quaternized dimethylaminopropylmethacrylamide or dimethylaminapropylmethacrylamide and 0 to 50%-wt acrylamide, acrylic acid, methacrylic acid, acrylamidomethylpropanesulfonic acid, are used, which polymers have an intrinsic viscosity of smaller than 150 ml/g. The trash removal or pitch control agent is added to the pulp flow and/or the circuit water in amounts of up to 1%-wt., relative to the dry weight of the paper manufactured.
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