Patent ID: 8206791

Claim:
A process for coating a metallic surface of an aircraft, comprising: applying to the metallic surface a composition that polymerizes to form a polyurea wherein the polyurea is formed from an A-side and a B-side, where the weight percents of components for the A-side are: from about 30 to about 65 percent of polyisocyanate; from about 15 to about 70 percent of a polytetramethylene ether glycol; diluent, from 0 to about 20 percent; where the weight percents of components for the B-side are: from 35 to about 40 percent of one or more diamines; from about 20 to about 70 percent of one or more amine terminated polyether polyols, and wherein the polyurea has a tensile strength of more than 3500 psi and at least 700% elongation.