Sheet or web material having antistatic properties
AssigneeAgfa-Gevaert
InventorsBavo Muys, Friedrich Jonas
Life of this patent
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Abstract
A sheet or web material comprising a hydrophobic resin support or paper support coated with at least one hydrophobic resin layer wherein said resin support or resin layer is coated with a transparent antistatic layer containing as an essential component a polythiophene with conjugated polymer backbone in the presence of a polymeric polyanion compound, characterized in that said antistatic layer is coated with an overlying adhering barrier layer applied from an aqueous polymer dispersion wherein the dispersed polymer has hydrophilic functionality sufficient to render said overlying layer adherent to a thereon coated hydrophilic colloid-containing layer.
Claims10
A sheet or web material comprising a hydrophobic resin support or a paper support coated with at least one hydrophobic resin layer wherein said resin support or resin layer is coated with an antistatic layer applied from a polymer dispersion containing a polythiophene with conjugated polymer backbone and a polymeric polyanion compound, with the size of the polymer particles in said dispersion being from 5 nm to 1 .mu.m, and wherein said antistatic layer is coated with an overlying adhering barrier layer applied from an aqueous polymer dispersion wherein the polymer of said barrier layer has hydrophilic functionality and said overlying adhering barrier layer is adhered to a hydrophilic colloid-containing layer.
Dependencies are inferred from the claim text.