Patent ID: 7906215

Claim:
A method of providing corrosion protection to a structure comprising an aircraft, spacecraft or rotorcraft, the method comprising the steps of: (a) forming the structure; (b) providing a polysiloxane ureide that includes a reaction product comprising the following: (i) at least one diamine-terminated polysiloxane of the general formula: wherein, for each unit of the polysiloxane R 1 and R 2 are independently selected from the group consisting of C 1 to C 10 alkyls, aryls, and polyaryls; for each unit of the polysiloxane R 3 and R 4 are independently selected from the group consisting of hydrogen, C 1 to C 6 alkyls, aryls, C 3 to C 6 cycloaliphatics, and C 3 to C 6 heterocycles; for each unit of the polysiloxane A l and A 2 are independently selected from the group consisting of hydrogen, C 1 to C 6 alkyls, aryls, polyaryls, C 3 to C 6 cycloaliphatics, and C 3 to C 6 heterocycles; for each unit of the polysiloxane, x is a number from 1 to 1000; (ii) at least one aromatic diamine, and, (iii) at least one diisocyanate; (c) dissolving the polysiloxane ureide in a solvent and spraying a resulting coating solution of the polysiloxane ureide directly onto one or more substrate surfaces of the structure, wherein the coating solution of the polysiloxane ureide is not used as an adhesive; and, (d) exposing the coated surface to conditions favorable to the formation of corrosion upon the surface of the structure.