Innovation through Chemistry


UNIPOL™ PE Process becomes first licensed PE Technology to use the unique liquid antioxidant


SCHENECTADY, NY – April 15, 2020 – SI Group a leading global developer and manufacturer of performance additives, process solutions, pharmaceuticals and chemical intermediates, is pleased to announce that its WESTON™ 705T liquid antioxidant has been recognized as a possible additive solution for Univation Technologies’ polyethylene (PE) manufacturing process, UNIPOL™ PE technology. The UNIPOL™ PE process is now the first licensed PE technology to adopt the liquid antioxidant. Effective immediately, WESTON™ 705T liquid antioxidant can be selected by UNIPOL™ PE licensees as an additive of choice for polyethylene manufacturing.

WESTON™ 705T liquid antioxidant was tested extensively before being considered as an alternative antioxidant solution for existing and new UNIPOL™ PE trains. Testing included successful reactor qualifications with various catalytic systems as well the successful completion of a new installation start-up. As a result, WESTON™ 705T liquid antioxidant is now an available option to UNIPOL™ PE licensees. SI Group is proud to support the UNIPOL™ PE licensees who choose WESTON™ 705T in technical and commercial aspects of use.

Compliance with the latest global food contact standards is a key requirement for the polyethylene value chain. Dr. Dave Brassington, Sr. Director-Regulatory Affairs at SI Group, commented on the extensive testing of the liquid antioxidant, “WESTON™ 705T liquid antioxidant has a thoroughly investigated safety profile and is approved for use in food contact applications in all countries with mandatory registrations; including the US, EU, China, and MERCOSUR.”

Recently, SI Group has expanded its WESTON™ 705T liquid antioxidant manufacturing capacity and global supply chain to support the growth of its unique antioxidant technology with global food contact approvals. Today, SI Group has a network of four independent production lines over two continents with scalable capacities and optimal raw material sourcing capabilities.

Company Contacts

For more information about WESTON™ 705T liquid antioxidant or other additive solutions from SI Group, contact Dr. Martin Pavlik, at

About SI Group

SI Group is a leading global developer and manufacturer of performance additives, process solutions, pharmaceuticals and chemical intermediates, with strong market positions in the plastics, oilfield, rubber, fuels & lubricants, active pharmaceutical ingredients and industrial resins industries. SI Group solutions are critical to the quality and performance of countless industrial and consumer goods. Headquartered in Schenectady, New York, SI Group operates more than 30 manufacturing facilities on five continents with approximately $2 billion in annual sales, and more than 3,000 employees worldwide. SI Group is a portfolio company of SK Capital Partners. SI Group is The Substance Inside. For more information, visit

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