Birch Hill Equity Partners, a private equity firm, completed the acquisition of the Specialty Chemicals business of Superior Plus, which distributes propane, supplies chemicals and technology, and produces potassium products, for $577m. "The sale of the chemicals business was an important component of our strategic plan and provides us with additional capital to further accelerate our accretive growth strategy in the US and Canadian propane markets,” Luc Desjardins Superior’s President and CEO.