Process for inhibiting white pitch deposition in papermaking...

Details Process for inhibiting white pitch deposition in papermaking... Process for inhibiting white pitch deposition in papermaking...

D - Textiles, Paper

21

F

117/57, 92/21.6

D21F 7/08 (2006.01) D21F 1/30 (2006.01) D21F 1/32 (2006.01) D21F 7/12 (2006.01) D21H 21/02 (2006.01)

Patent

CA 1331321

ABSTRACT OF THE DISCLOSURE This invention relates to a process for inhibiting white pitch deposition in felts of a papermaking system which comprises adding to the felts an effective inhibiting amount of an organic, anionic polyelectrolyte. The molecular weight of the polyelectrolyte is preferably from about 1,000 to 100,000. The polyelectrolyte is selected from the group consisting of polyacrylic acid, polymethacrylic acid, acrylic acid/polyethylene glycol allyl ether copolymers, methacrylic acid/polyethylene glycol allyl ether copolymers, acrylic acid/1-allyloxy-2-hydroxypropane sulfonic acid copolymers. The use of these polyelectrolytes in combination with surfactants provides an especially effective white pitch inhibiting and total felt conditioning process when applied to the felt.

597306

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