Pulping

Details Pulping Pulping

C - Chemistry, Metallurgy

07

G

C07G 1/00 (2006.01) D21C 3/04 (2006.01) D21C 3/20 (2006.01) D21C 3/22 (2006.01)

Patent

CA 2055040

28,919 ABSTRACT OF THE DISCLOSURE A family of catalysts is provided for use in the digest- ing liquor of pulping processes, which digesting liquors operate in generally acid media. The catalysts are especially useful for increasing the strength of sheets made from the pulp, as evidenced by increased tear strengths and, in some embodiments, increased burst strengths. The use of the catalyst in the digesting provides novel pulping compositions and novel pulping processes, which produce novel pulps, novel sheets made with the pulps, and novel lignins recovered from the digesting liquor. The illustrated catalysts generally comprise electron donor moieties and hydrophobic moieties.

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