With roots reaching back to Philadelphia Quartz’s 1861 sodium-silicate production, PQ makes silicates, specialty silicas, zeolites and related performance chemicals for industrial and everyday products. The Malvern-based company now operates 30 manufacturing facilities in 13 countries, with about 1,500 employees serving more than 900 customers worldwide. Its materials help support applications ranging from clean drinking-water treatment and lower-rolling-resistance tires to coatings, cleaning products and food and beverage processing.
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PQ CorporationWith roots reaching back to 1815, PQ Corporation manufactures silicates, specialty silicas, zeolites and related performance chemicals for industrial and everyday products. From Malvern, Pennsylvania, the company operates 31 manufacturing facilities across 13 countries, employs more than 1,500 people and serves over 900 customers worldwide. Its materials help support applications ranging from cleaner drinking water and fuel-efficient tires to paints, toothpaste and biofuels.MALVERN, PA
SI GroupWith roots in varnish and rubber dating to the 1890s, SI Group has spent more than a century developing chemistry for industrial manufacturers. Today, its approximately 1,500 employees work across 18 manufacturing sites to supply performance additives and related chemical solutions to customers in more than 80 countries.SCHENECTADY, NY
W. R. Grace & Co.-ConnFor more than 165 years, W. R. Grace & Co.-Conn. has built its name around chemistry-driven manufacturing, with a global workforce and operations spanning every continent. The company develops specialty materials for industrial customers, while its Aiken plant—established in 1941 and acquired by Grace in 1980—mines and packages kaolin used in petroleum catalysts and concrete.COLUMBIA, MD
Momentive TechnologiesMomentive Technologies develops and manufactures advanced materials, including fused quartz and ceramics, for industrial and technology applications. The company says it has more than 130 years of history, over 900 employees, and 10 facilities across Asia, Europe, and North America; its products support semiconductor manufacturing and other markets including aerospace and electronics.STRONGSVILLE, OH