When and by whom was polyurea invented? Be specific.

/kloc-in the 1980s, Texaco Company of the United States invented polyurea, which was later acquired by polyurethane giant Huntsman, who also commercialized polyurea. The famous chemist who works in these companies is Dudley Prem X II, whose ancestral home is Texas, USA, with a master's degree, and is honored as "the father of polyurea in the world" by the world academic circles.