Ink jet printing paper incorporating amine functional poly(vinyl alcohol)
AssigneeCelanese International Corporation
InventorJohn Richard Boylan
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Abstract
This invention relates to an improvement in coatings particularly suited for the preparation of paper products having an ink jet coating applied thereto and to the resulting paper products. The improvement in ink jet coatings resides in the incorporation of a primary amine functional polyvinyl alcohol (PVOH/PVNH2) as a polymeric binder. One form of an amine functional polyvinyl alcohol is produced by the hydrolysis of a copolymer of vinyl acetate and N-vinylformamide or vinyl acetate and allyl amine. Another is the polyvinyl butyral derivative of polyvinyl alcohol which typically is formed by the reaction of a 4-amino alkyl aldehyde dialkyl acetal, such as 4-aminobutyraldehyde dimethyl acetal with polyvinyl alcohol.
Claims24
In an ink jet paper product having applied to its surface an ink jet coating formulation comprising a mineral pigment and an aqueous based polymeric binder applied to its surface, the improvement which comprises incorporating a primary amine functional polyvinyl alcohol as the polymeric binder, wherein the primary amine functional polyvinyl alcohol is selected from the group consisting of a hydrolyzed copolymer of vinyl acetate and N-vinyl amide, a hydrolyzed copolymer of vinyl acetate and allyl amine and an aminoalkylal derivative of polyvinyl alcohol.
In a process for preparing an ink jet recording sheet which comprises applying an ink jet coating to a paper substrate, said ink jet coating comprising a polymeric binder and a mineral pigment, the improvement which comprises utilizing a primary amine functional polyvinyl alcohol as the polymeric binder, wherein the primary amine functional polyvinyl alcohol is selected from the group consisting of a hydrolyzed copolymer of vinyl acetate and N-vinyl amide, a hydrolyzed copolymer of vinyl acetate and allyl amine and an aminoalkylal derivative of polyvinyl alcohol.
Dependencies are inferred from the claim text.