Patent ID: 6686054
Filing Date: 2004-02-03
Classification: B41M,C08G,C09K,D06P,D21H,Y10T

Abstract:
A paper product sized by the process comprising applying directly to an exposed surface of a paper substrate a single sizing composition comprised of(a) a sizing agent selected from the group consisting of (i) an acidic salt of a guanidine polymer comprised of monomer units having the structural formula (IV) â€ƒwherein R3 is hydrogen or lower alkyl and R4 is hydrogen, alkyl, alkoxy, or hydroxyl-substituted alkoxy, and n is an integer in the range of 1 to 10 inclusive, (ii) a mixture of an azetidinium polymer and an acidic salt of a guanidine polymer comprised of monomer units having the structural formula (IV) as described above, and (iii) a copolymer of an azetidinium monomer and a guanidine monomer, wherein the sizing agent represents approximately 5 wt. % to 95 wt. % of the sizing composition, based upon total solids weights of the sizing composition after drying;(b) optionally, up to 40 wt. % of a film-forming binder, wherein if the sizing agent is (i), or (iii), the film-forming binder is present; and (c) a liquid vehicle, wherein the sizing agent is admixed with the liquid vehicle prior to direct application of the sizing composition to the substrate surface.