He touched on DuPont's costly, abortive attempts to become a high-margin drugmaker. And the divestiture of the performance coatings (auto paints) business, Axalta — which made billions — for Carlyle, the private-equity giant that bought the business cheap, then flipped it to public shareholders. And the titanium dioxide business — now Chemours — which also enriched outside investors after DuPont spun it off. And Lycra, the Wilmington-based, Chinese-owned ex-DuPont fabrics business, now weighing a U.S. IPO while building a new research center — in China.