Westlake Corporation Acquires ACI/Perplastic Group's Compounding Solutions Business

Westlake Chemical Acquires Dimex LLC from Grey Mountain Partners

September 13, 2021

Manufacturing

Westlake Chemical Corporation has completed the acquisition of Dimex LLC from Grey Mountain Partners. The purchase adds Dimex’s recycled-plastics compounding and manufactured products (landscape edging, matting, marine edging, masonry joints) and approximately 300+ employees in Marietta, Ohio to Westlake’s sustainable product portfolio.

Rock West Composites Acquires Assets of Performance Plastics, Inc.

September 8, 2023

Aerospace & Defense

Rock West Composites acquired the assets of Performance Plastics, Inc. on September 8, 2023, integrating PPI’s staff, facility and equipment into RWC operations. The deal expands Rock West’s product offering and manufacturing capabilities—adding metallic manufacturing, machining, forming and bonding—and brings approximately 80 PPI employees into RWC’s employee‑owned business.

Westlake Acquires Hexion's Global Epoxy Business for ~$1.2B

February 1, 2022

Manufacturing

Westlake Chemical Corporation completed the acquisition of Hexion Inc.'s global epoxy business for approximately $1.2 billion in an all-cash transaction. The acquired business—to be branded Westlake Epoxy and headquartered in Rotterdam—adds specialty epoxy resins, modifiers and curing agents that expand Westlake's coatings and composites capabilities for end markets such as wind energy, automotive and aerospace.

Westlake Chemical Acquires Hexion's Epoxy Business

February 1, 2022

Manufacturing

Westlake Chemical Corporation completed the acquisition of Hexion's epoxy-based Coatings and Composite businesses (the "Epoxy Business") for approximately $1.2 billion. The transaction transfers Hexion's epoxy specialty resins, base epoxy resins and intermediates product lines to Westlake; Hexion will continue to operate its Adhesives and Versatic Acids and Derivatives product lines following the divestiture.

Westlake Chemical Acquires Boral's North American Building Products Businesses

October 1, 2021

Building Products

Westlake Chemical Corporation completed the acquisition of Boral Limited's North American building products businesses (roofing; siding, trim and shutters; decorative stone; and windows) for $2.15 billion in an all-cash transaction. The deal roughly doubles Westlake's building-products portfolio, adds approximately 4,600 employees across 29 manufacturing sites in the United States and Mexico, and broadens Westlake's product lines and geographic footprint in the North American housing and light commercial markets.

WAI Global Acquires ACI Automotive from Standard Motor Products

January 31, 2025

Automotive

WAI Global has acquired ACI Automotive, a supplier of washer pumps, window regulators and door components, from Standard Motor Products, Inc. The deal expands WAI Global’s aftermarket product portfolio and leverages its global distribution network to broaden ACI’s customer reach while ensuring a seamless transition for customers and employees.