Antistatic coatings comprising chitosan acid salt and metal oxide particles
AssigneeMinnesota Mining and Manufacturing Company
InventorDavid R. Boston
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Abstract
A reduction of static buildup on surfaces can be accomplished by providing a coating which is the dried and reacted product of an aqueous composition of chitosan salt and inorganic metal oxide sol. A stable, static reducing coating on polymeric substrates is particularly useful in photographic media.
Claims10
An organic polymeric substrate having an antistatic protective coating thereon, said coating comprising an optically transparent layer of chitosan acid salt and anionic inorganic metal oxide colloidal particles.
An organic polymeric film having on at least one surface thereof an optically transparent antistatic protection layer of 50 to 1200 nm thickness comprising 1 to 65% by weight solids in said layer of a chitosan acid salt and 99 to 35% by weight solids in said layer of anionic inorganic metal oxide colloidal particles.
Dependencies are inferred from the claim text.