Polyammonium quaternary polymer obtained from a cationic monomer and a crosslinking agent for controlling anionic trash and pitch deposition and treating coated broke

摘要

A method of controlling anionic trash and pitch deposition in a pulp containing broke during papermaking, comprises adding to a pulp a polyammonium quaternary obtained from a cationic monomer and a crosslinking monomer. The pulp has a solids level of from 3 weight percent to 5 weight percent. The cationic monomer is diallyldimethylammonium chloride and the crosslinking monomer is N,N-diallylamine, N,N-diallylamine hydrochloride, N,N,N-triallylamine N,N,N-triallylamine hydrochloride, methylene bisacrylamide, N,N,N'N'-tetraallylpiperazinium dichloride or mixtures thereof. The polyammonium quaternary is added to the pulp in an amount from 0.1 to 6 pounds of polyammonium quaternary per ton of dry pulp and the molar ratio of the cationic monomer to the crosslinking monomer is at least greater than 99.9% cationic monomer to at least less than 0.1% crosslinking monomer.