D - Textiles – Paper – 21 – C
Patent
D - Textiles, Paper
21
C
9/51
D21C 9/08 (2006.01)
Patent
CA 1150914
ABSTRACT OF THE DISCLOSURE A method of reducing the amount of colloidal pitch particles in aqueous pulps which comprises treating said pulps with a water-dispersible poly- quaternary polymer of essentially linear structure consisting essentially of the difunctional reaction product of a lower dialkylamine and a difunctional epoxy compound selected from the group consisting of epihalohydrins, diepoxides, percursors of epihalohydrins and diepoxides which under alkaline conditions are readily converted into the corresponding epoxy compounds, and mixtures thereof, said polyquaternary polymer containing repeating units of Image wherein R and R2 are individually selected from the group consisting of alkyl of 1 to 3 carbon atoms, and E is a residue obtained from said epoxy compound; tic total amounts of reactants being substantially equimolar, the combination of which is such as to provide a polyquaternary compound which as a 37% aqueous solution, by weight, based on the cationic portion of said polyquaternary com- pound has a viscosity at 25°C. of at least 100 centistokes; and X represents an ion forming the anionic portion of said polyquaternary.
365778
Alchem Inc.
Smart & Biggar
LandOfFree
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