SI Group

SI Group is a global developer and manufacturer of performance additives, process solutions, active pharmaceutical ingredients and chemical intermediates, serving industrial markets including chemicals, pharmaceuticals, fuels and lubricants, oilfield services, plastics, rubber and adhesives. The company's portfolio spans plastics stabilization, fuel and lubricant additives, oilfield chemicals, and rubber and adhesives chemistry, alongside process solutions for industrial manufacturing.

Founded in 1906 as the Schenectady Varnish Company, SI Group has operated for over a century. It employs approximately 1,500 people worldwide and runs 18 manufacturing sites and joint ventures globally. The company is headquartered in The Woodlands, Texas, with historic origins in Schenectady, New York.

Technical work at SI Group covers performance additives technology, active pharmaceutical ingredients and chemical intermediates. The company states a focus on innovation, safety, sustainability and a customer-centric approach, and describes its aim as applying chemistry to improve the quality, performance and durability of everyday products.