Superabsorbent water-resistant coatings for fiber-reinforced articles
AssigneeNeptco JV LLC
InventorsMartin Flautt, James Priest, David Stotler, Thomas Hager
Life of this patent
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Abstract
A coating composition for forming a water-resistant coating on fiber-reinforced articles such as rods or cables. The composition comprises an aqueous solution of a superabsorbent water-soluble polymer, a viscosity modifying agent, and optionally a lubricant. The coating formed by applying the composition effectively prevents the treated surface from water-permeation damage by absorbing water that contacts the layer containing the superabsorbent component.
Claims13
1-27. (canceled)
A superabsorbent coating for reinforcing fiber strands or rovings, the coating comprising:
- a single layer of a substantially homogeneous and non-particulate mixture of a superabsorbent, water-swellable polymer, a non-particulate viscosity-modifying agent and a binder, said superabsorbent, water-swellable polymer demonstrating water absorption when said coating is wetted and demonstrating water desorption when said coating is dried without loss of said superabsorbent, water-swellable polymer from said coating;
- said single layer coating exhibiting, when immersed in an aqueous environment, a swell capacity of up to about 400 times an initial dry weight of said superabsorbent, water-swellable polymer, and
- said single layer coating further exhibiting, when applied to a reinforcing fiber strand or roving, a swell rate of from about 300 percent weight to about 2000 percent weight of a total weight of said superabsorbent, water-swellable polymer and said reinforcing fiber strand or roving within a first minute of being immersed in an aqueous environment.
A superabsorbent coating for a composite article including at least one reinforcing fiber material, the coating comprising:
- a single layer of a substantially homogeneous and non-particulate mixture of a superabsorbent, water-swellable polymer, a non-particulate viscosity-modifying agent and a binder, said superabsorbent, water-swellable polymer demonstrating water absorption when said coating is wetted and demonstrating water desorption when said coating is dried without loss of said superabsorbent, water-swellable polymer from said coating;
- said single layer coating exhibiting, when immersed in an aqueous environment, a swell capacity of up to about 400 times an initial dry weight of said superabsorbent, water-swellable polymer:
- and
- said single layer coating further exhibiting, when applied to said composite article, a swell rate of from about 300 percent weight to about 2000 percent weight of a total weight of said superabsorbent, water-swellable polymer and said reinforcing fiber material within a first minute of being immersed in an aqueous environment.
Dependencies are inferred from the claim text.