Diamond Chemical Company LLC, a Graycliff Partners LP portfolio company, acquired Nyco Products Company, creating one of the leading independent providers of sanitization chemicals in the United States. Grace Matthews advised Nyco’s shareholders on the transaction. Financial terms were not disclosed.

Diamond manufactures commercial and institutional soaps, detergents and warewash products. Nyco, based in Countryside, Illinois, manufactures specialty cleaning chemicals, including cleaners, disinfectants, sanitizers and floor care products for distributors serving facility maintenance, janitorial, food processing, healthcare and education end markets.

“This combination is a transformative step for Diamond,” said Wesley Alves, CEO of Diamond. “Nyco brings deep formulation expertise, a strong brand portfolio, and a Midwest manufacturing footprint that complements our coastal operations. Together, we can offer customers and distributors broader product availability and stronger national service.”

“The sale of our business to another dynamic company preserves our history while ensuring that our customers continue to receive the same high level of quality, reliability, and service,” said Bob Stahurski, CEO of Nyco Products Company. “In addition, they will gain access to Diamond’s full line of exciting product innovations. This transition ensures that our customers, partners, and legacy will continue to thrive under Diamond’s leadership.”

“The acquisition of Nyco Products Company by Diamond Chemical allows us to combine our 106-year legacy with Diamond’s 96-year history, strengthening our product lines and solutions while welcoming a fantastic group of customers and team members,” said John Wunderlich, president of Nyco Products Company. “This acquisition aligns with our strategic growth initiatives and opens doors to new market channels and opportunities.”

Diamond, headquartered in East Rutherford, New Jersey, serves hospitality, food service, commercial laundry and other institutional and industrial end markets. Nyco offers more than 450 stock and custom formulations, nationally recognized brands and its Building Better Brands® private chemical branding program.