Research Cottrell agreed to a leveraged buyout.

Research Cottrell Inc., a Somerville, N.J., pollution control, engineering and construction company, has agreed to a $293-million leveraged buyout by a group of investors that will include some members of management. The $44-a-share offer by R-C Acquisition Inc. was one of several bids for the company, a spokesman said. R-C Acquisition is made up of Odyssey Partners, the founders of Oppenheimer & Co., the investment banking firm Allen & Co. and First Chicago Venture Capital.