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US 4,536,420 AGranted
Process and composition for producing permanently water wettable surfaces
AssigneeGeneral Electric Company
InventorMilton E. Rickert, Jr.
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AssigneeGeneral Electric Company
InventorMilton E. Rickert, Jr.
Estimating the term…
A process and composition which produces a permanently water wettable, abrasion-resistant film on a surface is disclosed. The composition comprises a mixture of an aqueous colloidal dispersion of carboxylic acid functional polymer; an aqueous colloidal dispersion of surface hydroxylated silica, the amount of hydroxylated silica to carboxylic acid functional polymer being sufficient to cause the formation of canals in the cured film; an amine to render the carboxylic acid functional polymer water soluble; a curing agent for the carboxylic acid functional polymer; an optionally, a wetting agent. In the process, the composition is applied to a surface to form a film, and the film is dried and/or heated at a temperature sufficient to harden or cure the film. A preferred carboxylic acid functional polymer is acrylic resin .
A process for producing a permanently water wettable, abrasion-resistant film on a non-water-absorbing surface, consisting essentially of:
A process for producing an improved permanently water wettable, abrasion resistant film on a non-water-absorbing surface, consisting essentially of:
The process of claims 22, 30 or 32 wherein the mixture is heated at about 135.degree. C. to about 250.degree. C.
Dependencies are inferred from the claim text.