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Diamond Chemical Adds Nyco Products, Extending National Reach in Commercial Cleaning Chemicals

Reported by Peprofessional
May 28, 2026· 2 min read
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Key Takeaways
  • • Diamond Chemical Company, a Graycliff Partners portfolio company based in East Rutherford, New Jersey, has acquired Nyco Products Company, a Countryside, Illinois manufacturer of specialty cleaning chemicals founded in 1920.
  • • Nyco manufactures over 450 stock and custom formulations across cleaners, disinfectants, sanitizers, and floor care products, serving janitorial, food processing, healthcare, and education markets through a network of distributors.
  • • Nyco's nationally recognized proprietary brands include Marvalosa, e.logical, Chem-Prix, and Zing, plus the Building Better Brands private labeling program that enables distribution customers to develop their own labeled product lines.
  • • CEO Bob Stahurski Sr., who led the company for decades and served as president of ISSA (International Sanitary Supply Association) in 2009, is retiring in connection with the transaction; Stahurski and co-owners Bob Houston and Jim Shea purchased the business in 1985.
  • • The acquisition extends Diamond Chemical's national reach in the commercial cleaning chemicals sector and preserves Nyco's operational history, customer relationships, and service standards.
Summary
Diamond Chemical Company, a specialty chemical manufacturer and portfolio company of Graycliff Partners, has acquired Nyco Products Company, combining two established players in the institutional cleaning chemistry market. Nyco, founded in 1920 by Vince Nyhan as the Nyhan Company in Chicago, initially operated as a bottled water and powdered cleanser seller before evolving into a broad specialty chemicals platform serving multiple end markets.

Nyco currently manufactures over 450 stock and custom formulations including cleaners, disinfectants, sanitizers, and floor care products for distributors serving facility maintenance, janitorial, food processing, healthcare, and education sectors. The company operates from a 65,000-square-foot facility in Countryside, Illinois, where it relocated operations in 1998. Its portfolio includes nationally recognized proprietary brands such as Marvalosa, e.logical, Chem-Prix, and Zing, alongside the Building Better Brands private chemical branding program that enables distribution customers to develop and market their own labeled product lines.

The business has been owned since 1985 by a group of employees including CEO Bob Stahurski Sr., Bob Houston, and Jim Shea. Stahurski built the company's distributor relationships and industry presence over multiple decades, including serving as president of the International Sanitary Supply Association (ISSA) in 2009. In connection with the transaction, Stahurski is retiring. According to Stahurski, the sale to Diamond Chemical "preserves our history and culture while ensuring that our customers continue to receive the same high level of quality, reliability, and service." The acquisition represents Diamond Chemical's expansion into a complementary product portfolio and geographic reach within the commercial cleaning chemicals sector.

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AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Peprofessional Diamond Chemical Adds Nyco Products, Extending National Reach in Commercial Cleaning Chemicals