D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 17/45 (2006.01) D21H 21/02 (2006.01)
Patent
CA 2300836
A method is disclosed for controlling anionic trash and pitch deposition in a pulp and papermaking system treating coated broke which comprises the step of adding a polyammonium quaternary polymer to the system. The polyammonium quaternary, which is either branched or crosslinked, is obtained from at least one cationic monomer, preferably diallyldimethylammonium chloride, and at least one branching or crosslinking monomer, preferably N,N,N-triallylamine or N,N,N- triallymine hydrochloride.
L'invention concerne un procédé permettant de contrôler les déchets anioniques et le dépôt de résine dans un système de l'industrie de la pâte et du papier, et aussi de traiter les déchets enduits, qui consiste à injecter un polymère de polyammonium quaternaire dans le système considéré. Le polyammonium quaternaire, ramifié ou réticulé, est obtenu au moins à partir d'un monomère cationique, de préférence un chlorure de diallyldiméthyl-ammonium, et au moins à partir d'un monomère de ramification ou de réticulation, de préférence sous forme de N,N,N-triallylamine ou de chlorhydrate de N,N,N-triallylamine.
Cramm Jeffrey R.
Sherman Laura M.
St.john Michael R.
Tang Jiansheng
Marks & Clerk
Nalco Chemical Company
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