Joint Venture

Trinseo has 50 percent ownership in the joint venture, Americas Styrenics. The company is a leading polymer producer in its respective market.

Americas Styrenics logo

Americas Styrenics
As a leading integrated producer of polystyrene and styrene monomer, Americas Styrenics offers solutions and services to customers in a variety of markets throughout the Americas.


Trinseo 50%
Chevron Phillips Chemical Company 50%


Americas Styrenics was formed in 2008 as a 50/50 joint venture between The Dow Chemical Company and Chevron Phillips. After Trinseo became an independent company, it assumed Dow's ownership share in the JV.

Headquarters Location

The Woodlands, Texas

Production Facilities

Cartagena, Colombia; 
Gales Ferry, Connecticut;
Ironton, Ohio;
Joliet, Illinois;
Marietta, Ohio;
St. James, Louisiana;
Torrance, California;


Polystyrene and Styrene

Trinseo News

November 10 - November 11, 2021 The Greener Manufacturing Show 2021 Location - Cologne, Germany Business alignment - Sustainability
November 4 - November 4, 2021 TILE Magazine Webinar Location - Live Webinar, 2 pm Eastern Business alignment - Latex Binders – CASE
November 3 - November 4, 2021 Architects @ Work Location - Milan, Italy Business alignment - Engineered Materials

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