Sulfonato-organosilanol compounds and aqueous solutions thereof
AssigneeMinnesota Mining and Manufacturing Company
InventorsBoyd R. Beck, Frank T. Sher, George V. D. Tiers
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Abstract
Sulfonato-organosilanol compounds and aqueous solutions and compositions thereof are provided which have at least one sulfonato-organic substituent therein. The weight percentage of oxygen in the compounds is at least about 30% and the weight percentage of silicon in the compounds is not greater than about 15%, these percentages being taken with reference to the water-free acid form of the compounds. Hydrophilic siliceous surfaces and processes for imparting hydrophilicity to such surfaces are also provided.
Claims7
An article having a durable hydrophilic surface thereon, said article comprising (a) a substrate having a siliceous surface and (b) a reversibly hydrophilic layer thereon, said layer comprising a sulfonato-organosilicon compound bound to said substrate, said compound having at least one sulfonato organic substituent therein wherein said sulfonato-organosilicon compound is a sulfonato-organosilanol compound having at least one sulfonato-organic substituent wherein the weight percentage of oxygen in said silanol compound is at least about 30%, and the weight percentage of silicon in said silanol compound is not greater than about 15%, said percentages being taken with reference to the water-free acid form of said silanol compound.
Dependencies are inferred from the claim text.