Adhesive composition providing a signal means and adhesively...

C - Chemistry – Metallurgy – 09 – J

Patent

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Details

C09J 201/02 (2006.01) B32B 25/00 (2006.01) D21H 27/32 (2006.01) D21H 27/40 (2006.01)

Patent

CA 2289744

An adhesive composition for laminating multi-ply absorbent paper products is disclosed. The adhesive composition includes a dry strength binder material, a cationic wet strength resin, and an anionically stabilized titanium dioxide slurry. The cationic wet strength resin is made compatible with the anionically stabilized titanium dioxide slurry by adjusting the pH of the wet strength resin such that it is greater than the isoelectric point of the slurry before the wet strength resin is added to the adhesive composition. Methods of producing the adhesive composition and of laminating absorbent paper products using the adhesive composition are also disclosed.

L'invention concerne une composition adhésive pour contrecoller des produits en papier absorbant multicouches. Cette composition adhésive comporte un liant conférant la résistance à l'état sec, une résine cationique conférant la résistance à l'état humide, et une suspension dense de dioxyde de titane stabilisée par voie anionique. La résine cationique conférant la résistance à l'état humide est rendue compatible avec la suspension précitée par régulation du pH de la résine de manière à ce qu'il soit supérieur au point isoélectrique de la suspension avant que ladite résine soit ajoutée à la composition adhésive. L'invention concerne également des procédés pour produire la composition adhésive et contrecoller des produits en papier absorbant à l'aide de cette dernière.

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