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Protective Coatings for High Strength Steel

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By: KERRY PIANOFORTE

Editor, Coatings World, Coatings World

U.S. 8,206,791 B2
Texas Research International, Inc. has been granted a patent for a process for coating a metallic surface of an aircraft comprised of applying 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: 30%-65% of polyisocyanate; from 15%-70% a polytetramethylene ether glycol; diluent, 0%-20%; where the weight percents of components for the B-side are: from 35%-405 of one or more diamines; from 205-70% 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.

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