Process for trash removal or pitch-like resin control in the pap

Details Process for trash removal or pitch-like resin control in the pap Process for trash removal or pitch-like resin control in the pap

1992-03-27

1994-03-08

Jones, W. Gary

Paper making and fiber liberation

Processes and products

Non-fiber additive

1621683, 162199, 1621813, 162DIG4, 210692, D21H 1755, D21H 2102

Patent

active

052924041

ABSTRACT:
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 dimethylaminopropylmethacrylamide 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.

REFERENCES:
patent: 3897333 (1975-07-01), Field et al.
patent: 4021484 (1977-05-01), Toda et al.
patent: 4184912 (1980-01-01), Payton
patent: 4190491 (1980-02-01), Drennen et al.
patent: 4311805 (1982-01-01), Moritani et al.
patent: 4861429 (1989-08-01), Barnett et al.
patent: 4919757 (1990-04-01), Ohmae et al.
Billmeyer, "The Textbook of Polymer Chemistry", 3rd Edition, 1984, John Wiley and Sons, pp. 208-210.
Strazdins, E., "Chemical Aids Can Offset Strength Loss In Secondary Fiber Furnish Use", Pulp and Paper, Mar. 1984, pp. 73-77.
Penniman, J. G., "The Importance of Eliminating Anonic Trash", Paper Trade Journal, Apr. 1, 1978, pp. 36-37.

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