Enhanced surface sizing of paper

Details Enhanced surface sizing of paper Enhanced surface sizing of paper

D - Textiles, Paper

21

H

D21H 19/28 (2006.01) D21H 21/16 (2006.01)

Patent

CA 2731253

Size press compositions and methods for producing sized paper products, including liner board are disclosed. The Size press compositions contain at least one non- reactive cationic surface sizing agent at least one reactive sizing agent, at least one promoter resin, at least one binder, and water. The at least one non -reactive cationic surface sizing agent may be a polymer in the form of a dispersion, an emulsion or a latex with a positive zeta potential below about pH6. The at least one reactive sizing agent may be a dispersion, an emulsion or a latex including an alkyl ketene dimer or an alkyl succinic anhydride. The at least one promoter resin may be a polyaminoamide-epichlorohydrin resin or poly (dimethyldiallylammonium chloride).

Linvention concerne des compositions de presse encolleuse et des procédés de production de produits papetiers collés, y compris du carton double. Les compositions de presse encolleuse contiennent au moins un agent de collage en surface cationique non réactif, au moins un agent de collage réactif, au moins une résine promotrice et au moins un liant, et de leau. Ledit au moins un agent de collage en surface cationique non réactif peut être un polymère sous la forme dune dispersion, dune émulsion ou dun latex avec un potentiel zêta positif inférieur à environ un pH de 6.  Ledit au moins un agent de collage réactif peut être une dispersion, une émulsion ou un latex qui comprend un dimère dalkylcétène ou un anhydride alkylsuccinique. Ladite au moins une résine promotrice peut être un résine de polyaminoamide-épichlorohydrine ou un poly(chlorure de diméthyldiallylamonium).

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