Casein replacement acidic/basic polymer dispersions

Details Casein replacement acidic/basic polymer dispersions Casein replacement acidic/basic polymer dispersions

C - Chemistry, Metallurgy

08

L

400/5908, 400/90

C08L 57/00 (2006.01) D21H 19/58 (2006.01) D21H 19/60 (2006.01)

Patent

CA 1058344

HERBERT ZIMA and JOSEF FORSTNER POLYMER DISPERSIONS AS A CASEIN REPLACEMENT ABSTRACT OF THE DISCLOSURE Polymer dispersions useful as a replacement for casein in paper coatings, and paper coating compositions containing such disper- sions, are described. The dispersions comprise from about 85 to 95 percent by weight of an ethylenically unsaturated monomer free from additional functionality, i.e., styrol or vinyl esters of acetic acid and/or propionic acid, and from about 5 to 15 percent by weight of acid, i.e., acrylic acid, and basic, i.e., 1-vinylimidazole,monomers. Paper coating compositions containing the dispersion as a casein substitute when applied to paper in a conventional manner have excellent properties including whiteness, wet rub resistance, and water resistance.

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