Sulfopolymer/vanadium oxide antistatic compositions
AssigneeMinnesota Mining and Manufacturing Company
InventorsEric D. Morrison, David R. Boston, Steven T. Hedrick, William L. Kausch, Wayne K. Larson, Simon S. Fung
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Abstract
Aqueous-based mixtures comprising colloidal vanadium oxide and a dispersed sulfonated polymer impart antistatic properties to coatings on a substrate and to self-supporting articles. The preferred colloidal vanadium oxide is alkoxide derived and provides mixed valence vanadium oxide wherein the vanadium ions are typically +4 and +5. Preferred sulfopolymers include sulfopolyesters, sulfopolyurethanes, sulfopolyurethanes/ureas, sulfopolyester polyols, and sulfopolyols. Antistatic composite structures comprising colloidal vanadium oxide and a sulfopolymer are also disclosed.
Claims29
An article comprising a substrate having on at least one surface thereof an aqueous mixture comprising colloidal vanadium oxide and a dispersed sulfonated polymer comprising at least one unit containing a salt of a --SO.sub.3 H group in an amount more than zero and up to 15 percent by weight solids based on the sulfonated polymer and vanadium oxide composition, said vanadium oxide being present in the range of 0.2 to 50 weight percent on a dry basis of total solids, the aqueous mixture being present in an amount sufficient to provide said article with antistatic properties.
A layered composite structure consisting essentially of at least one layer of aqueous colloidal vanadium oxide and at least one layer of a dispersed sulfonated polymer comprising at least one unit containing a salt of a --SO.sub.3 H group, said vanadium oxide being present in the range of 0.2 to 50 weight percent on a dry basis of total solids, said vanadium oxide and said sulfonated polymer being present in an amount sufficient to provide said layered structure with antistatic properties.
Dependencies are inferred from the claim text.