PQ Corporation

PQ Corporation is a private, active specialty chemicals company focused on silicates, silicas, zeolites, and related derivative materials used across industrial and consumer applications. The company traces its roots to the 19th century and today operates a global manufacturing footprint spanning multiple countries, serving markets such as paints and coatings, purification, green tires, personal care, food and beverage processing, and chemical manufacturing. Its products are used as functional ingredients and process aids in applications including water treatment, toothpaste, biofuels, catalysts, and filtration. PQ is not a biotech, pharma, or healthcare therapeutics company, though some of its materials are sold into personal care and pharmaceutical-adjacent applications. The company has remained under the PQ brand after its 2021 acquisition of the Performance Chemicals business by Koch M&T and Cerberus Capital.