Sizing method and composition for use therein

Details Sizing method and composition for use therein Sizing method and composition for use therein

1975-01-06

1976-05-18

Anderson, Harold D.

Paper making and fiber liberation

Processes and products

Non-fiber additive

162166, 260 173, 260 294R, C08L 300, D21D 300

Patent

active

039575748

ABSTRACT:
In the production of sized paper and board using ketene dimer as sizing agent, there is used concomitantly with the ketene dimer a cationic polyelectrolyte so as to increase the sizing effect of the ketene dimer. The cationic polyelectrolyte is normally a dye fixative selected from water-soluble dicyandiamide-formaldehyde condensates. The cationic polyelectrolyte may be mixed with the ketene dimer so as to form a novel sizing composition which is preferably used in the form of an emulsion.

REFERENCES:
patent: 2492702 (1949-12-01), Neubert et al.
patent: 2576241 (1951-11-01), Spangler
patent: 2950268 (1960-08-01), Cofrancesco
patent: 3006806 (1961-10-01), Schur
patent: 3014834 (1961-12-01), Pattilloch
patent: 3575796 (1971-04-01), Brown et al.
patent: 3582461 (1971-06-01), Lipowski
patent: 3594272 (1971-07-01), Shen
patent: 3840486 (1974-10-01), Dumas
Publication: Imperial Chemical Industries Limited Dyestuffs Division 1970: "Dyes for Paper," Vol. I.
Chem. Absts. 79:20577c, "Sizing Mixtures," Anderson.

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