Key Takeaways Westlake acquired ACI's compounding solutions business to expand its specialty materials platform. The buyout expands WLK's compounds' manufacturing footprint into Portugal, Romania and Tunisia. The deal supports higher-value growth in WLK's Housing & Infrastructure Products segment. Westlake Corporation (WLK)  has expanded its specialty materials platform by acquiring the compounding solutions business of ACI/Perplastic Group. The move meaningfully enhances its global compounds portfolio.  Th ...