The Compass Group International LLC, a private US investment firm that provides equity capital to small and private middle market companies, has acquired SDC Technologies Inc, a California-based global supplier of functional surface technologies, coatings and materials and a leading developer of proprietary, high-performance coating systems for application to plastic and glass materials. The coatings are used extensively in vision applications with end uses in the ophthalmic, sunglass and safety eyewear segments. No changes to SDC's senior management team are planned. The Compass Group was attracted to the acquisition partially by SDC's technology suite and hopes to capitalize on SDC's global customer base, suppliers and employees, and enable SDC to expand.