Process for making paper products of improved dry strength

Details Process for making paper products of improved dry strength Process for making paper products of improved dry strength

1971-07-06

1977-11-01

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

Non-fiber additive

162177, 260 174GC, D21D 300

Patent

active

040564320

ABSTRACT:
Paper products exhibiting markedly improved dry strength properties are produced by adding to the cellulose paper dispersion a chitin-based compound comprising chitosan alone or a graft copolymer of certain acrylic and/or diallylic monomers grafted onto the chitosan as a substrate.

REFERENCES:
patent: 2216845 (1940-10-01), Larson
patent: 2748029 (1956-05-01), Spear et al.
patent: 3095391 (1963-06-01), Brockway et al.
patent: 3288770 (1968-11-01), Butler
patent: 3445556 (1969-05-01), Kuzwak et al.
patent: 3639208 (1972-02-01), Varveri et al.
patent: 3709780 (1973-01-01), Slagel et al.

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