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US 11,078,625 B2Granted
Water-dispersible paper
AssigneeNippon Paper Papylia Co., Ltd.
InventorsMasaki Kishimoto, Yoshiaki Ishino
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AssigneeNippon Paper Papylia Co., Ltd.
InventorsMasaki Kishimoto, Yoshiaki Ishino
Estimating the term…
The present invention provides a water-dispersible paper having improved dispersibility in seawater. A water-dispersible paper can have excellent dispersion solubility in seawater and the clogging of a filter by a water-dispersible paper can be reduced, by using an alkalized carboxyalkyl cellulose having a specific degree of etherification (DS) and a specific Runkel ratio. The water-dispersible paper comprises a base paper containing fibrous carboxyalkyl cellulose and papermaking fibers, wherein the content of the fibrous carboxyalkyl cellulose in the base paper is from 25 to 80% by weight, the fibrous carboxyalkyl cellulose is alkalized, the degree of etherification (DS) of the fibrous carboxyalkyl cellulose is from 0.40 to 0.63, and Runkel ratio of the fibrous carboxyalkyl cellulose is from 0.5 to 3.5.
A water-dispersible paper comprising a base paper containing fibrous carboxyalkyl cellulose and papermaking fibers, wherein the content of the fibrous carboxyalkyl cellulose in the base paper is from 25 to 80% by weight, the fibrous carboxyalkyl cellulose is alkalized, the degree of etherification (DS) of the fibrous carboxyalkyl cellulose is from 0.40 to 0.63, and Runkel ratio of the fibrous carboxyalkyl cellulose is from 0.8 to 3.5.
Dependencies are inferred from the claim text.