Danbury, Conn. (June 4, 2014) – Addivant™, a global leader in polymer additive technologies, today announced that WESTON® 705 liquid antioxidant, the next generation of nonylphenol-free phosphite technology, has received approval from the U.S. Food and Drug Administration (FDA) for food contact applications. Extensively researched and supported with comprehensive toxicology testing, WESTON® 705 antioxidant provides superior safety as well as enhanced polymer performance and higher processing productivity vs. conventional solid phosphites. The product delivers major benefits across the entire value chain, from resin producers and converters to retailers and consumers.  

Further, Addivant’s WESTON® 705 antioxidant is produced in multiple facilities worldwide ensuring security of supply for customers around the globe.  

“We developed our innovative WESTON® 705 liquid antioxidant with the future in mind,” said Peter Smith, President and CEO, Addivant. “Not only does this technology overcome the  drawbacks of conventional solid phosphites, it also enables our customers to capitalize on their latent technology to further enhance the polymer architecture allowing them to meet the needs of the very latest in processing systems, end markets and applications. Our proactive investment in gaining comprehensive global food-contact approvals for WESTON® 705 antioxidant, together with our robust supply chain of regional manufacturing facilities helps Addivant support its mission of Winning with our Customers.”

WESTON® 705 antioxidant is a highly effective stabilizer that protects polymers from degradation during use. It represents the newest generation of liquid phosphite technology, the preferred secondary antioxidant for linear low density polyethylene (LLDPE) and high density polyethylene (HDPE) polymers. This product looks, handles and functions like WESTON® TNPP phosphite but is nonylphenol free and higher in phosphorous, so lower loadings (up to 18 percent lower) provide equivalent performance.

With FDA approval for food contact applications, WESTON® 705 antioxidant now offers greater versatility, enabling its use in a wide range of food packaging, from deli wrap to snack food bags and from carton liners to boil-in bags, as well as non-food packaging and non-packaging applications. WESTON® 705 antioxidant – a clear, colorless, odorless liquid – also supports major conversion trends such as multilayer films and coated, laminated films.

Top Benefits for PE Producers, Converters, Retailers and Consumers Addivant’s WESTON® 705 antioxidant delivers important improvements in safety, performance and productivity compared to existing phosphite antioxidants, benefiting each link in the value chain.

  • Superior Safety: With comprehensive global food approvals and nonylphenol-free formulation, WESTON® 705 antioxidant helps boost consumer confidence about the safety and sustainability of food packaging.
  • Enhanced Performance: Advancements in WESTON® 705 antioxidant’s stability performance pave the way for new polymers that deliver improved color and surface aesthetics and better film quality. This technology meets the demands of new engineered plastics solutions where polymers must withstand rigorous processing conditions such as higher temperatures, greater shear and increased recycling. Its superior stabilization performance delivers a 10-fold improvement in color protection vs. standard antioxidants, and also enables thinner film with the same strength.
  • Higher Productivity: As a liquid, WESTON® 705 antioxidant provides better phosphite solubility than solid products, helping to reduce downtime for die cleaning and enabling processors to run production lines faster without concerns about polymer degradation. Low gel formation (one-fourth the gels of standard antioxidants) also contributes to improved productivity.


About Addivant™
Addivant™ is an innovator in the field of polymer additives, developing customized solutions that provide customers enhanced application performance, safe handling, and reduction in cost of use. The company is recognized industry-wide for its extensive portfolio of specialty additives including antioxidants, light stabilizers, rubber additives, polymer modifiers, metal deactivators, polymerization inhibitors, and intermediates. Addivant is an international company, with 11 plants on five continents, as well as research, manufacturing and sales facilities around the globe. Addivant maintains its global headquarters in Connecticut, USA, with regional headquarters in: Al Jubaïl, Saudi Arabia; Basel, Switzerland, and Shanghai, China. Addivant is an independent portfolio company of SK Capital. Visit for more information.

About SK Capital
SK Capital is a private investment firm focused on the specialty materials, chemicals and healthcare sectors. The firm has deep experience in and knowledge of Addivant’s products and end markets gained through previous and current portfolio companies in the polymers, plastics and associated additives sectors. Located in New York, NY and Boca Raton, FL, the firm is currently investing from SK Capital Partners III, L.P. a $500 million fund of committed capital. Its portfolio companies generate revenues of over $6.0 billion annually and employ more than 5,000 people. Visit for more information.

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Addivant™ and WESTON® are trademarks of Addivant.

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