Westlake Chemical was founded in 1986 by T. T. Chao, a pioneer in the global petrochemical industry, with the acquisition of a polyethylene plant in Lake Charles, Louisiana. Building on three decades of prior experience in Asia, the company embarked on a mission of consistent growth through further acquisition, expansion of existing facilities and new construction. Following are some of the highlights of this exciting journey. 



  • Acquired Nakan, a global compounding solutions business
  • Acquired DaVinci Roofscapes


  • Westlake listed as a "Fortune 500" company
  • Announce expansions in chlor-alkali, PVC and VCM capacities at facilities in Germany and Louisiana


  • Completed 250 million pound ethylene expansion in Lake Charles, Louisiana
  • Completed 100 million pound ethylene expansion in Calvert City, Kentucky


  • Westlake Chemical celebrates its 30th anniversary worldwide
  • Westlake Chemical acquires Axiall Corporation


  • Acquired additional interest in Suzhou Huasu Plastics Company
  • Westlake named a "Forbes Top 100 Most Trustworthy Companies in America"


  • Dedicates Geismar, LA Chlor-Alkali Plant
  • Establishes Westlake Chemical Partners
  • Acquired Vinnolit Holdings GmbH
  • Announces Lake Charles Petro 1 Ethylene Expansion
  • Completes Calvert City Expansions


  • Acquired CertainTeed's PVC Pipe, Fittings & Foundations business
  • Started-up Geismar, LA Chlor-Alkali Plant


  • Acquired 50% ownership of Cypress Pipeline
  • Commenced construction of a new chlor-alkali plant in Geismar, LA