DuPont, Wilmington, DE, has initiated changes in its senior management. Among them, Diane Gulyas, chief marketing and sales officer, was named group vice president, DuPont Performance Materials. She succeeds Jeffrey Keefer, who will focus on increasing shareholder value throughout DuPont's global operations. Ms. Gulyas' former duties will be integrated into those of John Hodgson, who will have the title of chief marketing and sales officer.

In another recent change, Mathieu Vrijsen, president, Europe, Middle East and Africa, was named senior vice president, Operations & Engineering. Mr. Vrijsen, who will relocate to Wilmington from Geneva, will be succeeded by Ian Hudson, regional director, DuPont Advanced Fiber Systems and Nonwovens, Europe, Middle East and Africa. Additionally, Donald Johnson, group vice president, Operations & Engineering, was named chairman and representative director of DuPont K.K. (Japan).