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US 9,840,629 B2Granted
Aqueous polyelectrolyte complex as one pot nanocoating solution to impart antiflammable behavior to various substrates
AssigneeThe Texas A&M University System
InventorJaime C. Grunlan
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Abstract
A method includes coating a substrate to provide a flame resistant substrate. In an embodiment, the method includes preparing a solution. The solution includes an anionic material, a cationic material, and water. The method further includes exposing the substrate to the solution to produce a coating on the substrate. The coating has cationic material and anionic material.
Claims10
A method for coating a substrate to provide a flame resistant substrate, comprising:
- (A) exposing the substrate to a solution with a pH of about 2;
- (B) preparing a polysodium phosphate solution and adjusting a pH of the polysodium phosphate solution to about 7 to about 14;
- (C) preparing a polyethyleneimine solution and adjusting a pH of the polyethylenimine solution to about 7 to about 14;
- (D) preparing an aqueous solution, wherein the aqueous solution comprises:
- the polysodium phosphate solution and the polyethyleneimine solution;
- and
- water;
- and
- (E) exposing the substrate to the aqueous solution to produce a coating on the substrate, wherein the coating comprises polysodium phosphate and polyethyleneimine;
- wherein the coating is of a thickness such that the substrate is self-extinguishing during a vertical flame test.
7 more elements
Dependencies are inferred from the claim text.