Mitsubishi Chemical America, a chemical products manufacturer, completed the acquisition of Gelest Intermediate Holdings, a manufacturer and supplier of silicones, organosilanes, metal-organics and specialty monomers, from New Mountain Capital, a private equity firm. Financial terms were not disclosed. “New Mountain Capital has been a terrific partner and helped us to significantly grow the company over the past three years. We now look forward to joining MCC where their capabilities and breadth will allow Gelest to create even more value for customers and opportunities for employees,” Ken Gayer, Gelest CEO.