MOSCOW (MRC) -- DuPont on 8 March announced the acquisition of electronic chemicals maker Laird Performance Materials from private equity firm Advent International (New York, New York) for USD2.3 billion, said Chemweeek.The purchase price represents an EBITDA multiple of about 15 times (x), excluding projected synergies, and will be funded with existing cash balances. Laird is a maker of