Carbon dioxide in neutral and alkaline sizing processes

Details Carbon dioxide in neutral and alkaline sizing processes Carbon dioxide in neutral and alkaline sizing processes

D - Textiles, Paper

21

H

D21H 17/06 (2006.01) D21H 17/17 (2006.01) D21H 21/16 (2006.01)

Patent

CA 2069713

In the nan-acidic sizing of paper reaction between alkylketene dimer sizing agent and cellulose of cellulosic paper-making fibers is catalyzed by dissolving carbon dioxide in an aqueous vehicle of an aqueous pulp of the paper-making fibers; the carbon dioxide provides bicarbonate ions which catalyse the reaction; the bicarbonate ions may be generated by dissociation of the carbon dioxide in water, ar by reaction of the carbon dioxide with calcium carbonate incorporated in the pulp as a filler for the paper, or with some other alkali present.

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