What Westlake Epoxy does

Westlake Epoxy is the epoxy resins, curing agents, and modifiers business unit of Westlake Corporation (NYSE: WLK), a publicly traded Houston-based materials company. The business traces its epoxy heritage to 1949 and markets a portfolio of approximately 500 products under proprietary brands including EPON, EPIKOTE, EPIKURE, EPI-REZ, HELOXY, EPONEX, EPOSIL, EPONOL, INFINIUM, and EpoVIVE, covering liquid, solid, waterborne, cycloaliphatic, and specialty epoxy systems. It operates eight manufacturing facilities worldwide (with key sites at Deer Park, Texas and Duisburg, Germany) and a DNV-certified testing laboratory in Esslingen, Germany, serving customers in roughly 60 countries.

The business serves five primary end markets: wind energy (resin infusion, bonding pastes, and blade tooling systems with 30 years of domain depth), aerospace and transportation (fire-smoke-toxicity-resistant composites and fast-cure RTM systems), automotive (lightweight composites, EV battery enclosures, fire-retardant components, and coatings), coatings (waterborne, low-VOC, and high-solids systems including the NextGen Epoxy Waterborne System), and general industrial and construction. Westlake Epoxy generates revenue through the sale of epoxy resin systems, primarily on a per-contract negotiated basis, distributed via a global channel network led by Brenntag with complementary regional distributors and direct sales for complex aerospace, wind, and automotive accounts.

Revenue mechanics are B2B specialty chemicals: one-time product sales (the source labels revenue_model_types as one_time_license, but operationally this reflects batch/contract resin sales rather than recurring licensing), priced per contract through distributors and direct sales, with no disclosed subscription or licensing model. Sustainability has become a meaningful commercial vector through EpoVIVE mass balance-attributed products backed by ISCC PLUS certification at both Deer Park and Duisburg. The business was acquired by Westlake Corporation from Hexion Inc. in 2020, rebranding from Hexion Epoxy to Westlake Epoxy, and has since pursued geographic expansion (India via Brenntag in February 2026), circular economy partnerships (Alpha Recyclage Composites in June 2025), and continued product development in low-VOC and fast-cure aerospace systems.

Name

Westlake Epoxy

Legal name

Westlake Corporation

Website

https://westlakeepoxy.com

Company type

Public

Founded year

1949

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Westlake Epoxy is the epoxy resins and curing agents business unit of Westlake Corporation, supplying approximately 500 products across coatings, wind energy, aerospace, automotive, and industrial composites to customers in 60 countries from eight global manufacturing facilities.

Ownership category

akta.pro rank

Product category

Specialty Chemicals - Epoxy Resins

NAICS

Resin and Synthetic Rubber Manufacturing (32521)

SIC

Plastic Materials, Synth Resins & Nonvulcan Elastomers (2821), Adhesives & Sealants (2891)

akta.pro primary industry

Thermoset Resins (Epoxy, Phenolic, Unsaturated Polyester, PU resins) (IMAEANAE)

akta.pro secondary industry

Coating & Adhesive Raw Materials (Resins, Additives, Solvents) (IMAEAGAK)

Keywords

• Epoxy resins
• Curing agents
• Specialty chemicals
• Composite materials
• Industrial coatings

Headquarters

HQ city

Rotterdam

HQ country

Netherlands

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Supply Chain, Technology or R&D, Personnel, Infrastructure, Marketing or Sales

Revenue model

1. Epoxy Resins and Derivatives: Westlake Epoxy generates revenue through the sale of epoxy resin products including liquid epoxy resins (EPON brand), solid epoxy resins, and specialty epoxy formulations. These are sold directly and through distributors to industrial manufacturers in coatings, composites, adhesives, construction, and other end markets.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels4 records

Core offering

Westlake Epoxy manufactures and sells epoxy resins, curing agents, and functional modifiers used as raw materials in industrial coatings, composites, adhesives, and construction applications. The portfolio spans liquid, solid, waterborne, and specialty epoxy systems sold under brands such as EPON, EPIKOTE, EPIKURE, EPI-REZ, HELOXY, EPONEX, EPOSIL, INFINIUM, EPONOL, FlameX, and EpoVIVE. Products are supplied globally to manufacturers in wind energy, aerospace, automotive, coatings, and general industrial sectors.

Product overview

Westlake Epoxy is a global supplier of epoxy resins, curing agents, and modifiers with over 75 years of experience. The company operates 8 manufacturing facilities worldwide and offers approximately 500 products distributed across 60 countries. The product portfolio centers on three core brands—EPON™ liquid and solid epoxy resins, EPIKOTE™ resin systems, and EPIKURE™ curing agents—supplemented by waterborne systems (EPI-REZ™), functional modifiers (HELOXY™), and specialty products. These offerings serve diverse applications including wind energy composites, automotive and aerospace transportation, industrial and protective coatings, construction, electrical laminates, and adhesives. Recent additions include the NextGen Epoxy™ Waterborne System for low-VOC coatings, INFINIUM™ lower yellowing systems, and EpoVIVE™ sustainable mass balance products certified under ISCC PLUS. The company also provides technical formulation support, testing services (including a DNV-certified laboratory in Esslingen, Germany), and global distribution through partners including Brenntag.

Differentiator

Problem solved

Functional benefit

Brands

• EPON: Epoxy resin product line trademark
• EPIKOTE
• EPIKURE
• EPI-REZ
• EpoVIVE
• NextGen Epoxy Waterborne System
• INFINIUM
• EPONEX
• EPOSIL
• HELOXY
• EPONOL
• FlameX
• MGS

Products and services

• EPON Resins Liquid epoxy resins based on bisphenol A (BPA) and bisphenol F (BPF) chemistry, including standard and modified variants, plus solid and powder grades for coatings, composites, adhesives, baked industrial coatings, hot melt adhesives, molding powders, powder coatings, and electrical applications.
• EPIKOTE Resins Epoxy resin systems including liquid, solid, and specialty formulations for composites, electrical laminates, powder coatings, and related industrial applications.
• EPIKURE Curing Agents Complete range of curing agents including polyamides, modified aliphatic amines, waterborne curing agents, and powder coating curatives that work with EPON and EPIKOTE resins to form finished epoxy systems.
• EPI-REZ Waterborne Resins Waterborne epoxy resin dispersions enabling low-VOC coating formulations while maintaining performance levels comparable to solvent-borne systems, including liquid and solid resin dispersions for coatings, construction, and industrial applications.
• HELOXY Modifiers Functional modifiers including mono-functional glycidyl ethers (diluents), di-functional modifiers, and poly-functional modifiers that enhance flexibility, impact resistance, thermal properties, and chemical resistance of epoxy systems.
• EPONEX Resin 1510 Cycloaliphatic epoxy resin with hydrogenated BPA/epoxy composition, designed for lower yellowing and improved UV-resistant epoxy coatings and formulations.
• EPOSIL Resin 5550 Hybrid epoxy/polysiloxane resin system providing improved gloss retention, higher hardness development, and faster dry times for outdoor durable coatings including graffiti-resistant applications.
• INFINIUM Lower Yellowing Epoxy System Innovative binder system that performs like an epoxy and resists yellowing like a polyurethane, designed for lower yellowing epoxy coatings to protect concrete or wood surfaces.
• NextGen Epoxy Waterborne System Waterborne epoxy coating system combining EPI-REZ Resin with EPIKURE Curing Agent, offering coatings performance comparable to solvent-borne systems while meeting stringent VOC regulations at competitive pricing.
• EPIKOTE Resin MGS Series Comprehensive MGS product line including PR687G binder resin, MGS bonding pastes (BP5/BP10/BP20), Repairset products, DRILLFILL20 gap-filling resin, RIMR 910 tooling resin, and related systems for wind turbine blade manufacturing and repair.
• FlameX Epoxy Resin System Fast-cure epoxy resin system designed for Resin Transfer Molding (RTM) processes, supporting aerospace and automotive composite applications with fire, smoke, and toxicity resistance.
• EpoVIVE Mass Balance Products ISCC PLUS certified mass balance-attributed epoxy resin products using certified renewable feedstock, enabling customers to access sustainable epoxy solutions with documented renewable content attribution across Europe and North America.
• EPONOL Ultra High Molecular Weight Resin Phenoxy-type ultra high molecular weight epoxy resin used in paints, coatings, prepreg laminate varnishes, adhesives, and composites to improve flexibility, flow control, and adhesion properties.

Quantifiable outcome

• ISCC PLUS mass balance-attributed epoxy resins now available across Europe and North America through Duisburg and Deer Park certified facilities
• +2 more outcomes

Named customers1 record

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered core and minor.

• BrenntagcoreChannel Partner/ Reseller/ Distributor · 18 February 2026Westlake Epoxy expanded its distribution relationship with Brenntag to South and West India, building on an existing global collaboration spanning Europe, North and South America, and Southeast Asia. Under the agreement, Brenntag distributes Westlake Epoxy's full epoxy solutions portfolio including EPON, EPIKOTE, EPIKURE, and EPI-REZ product lines for coatings, adhesives, and construction applications. The partnership leverages Brenntag's local technical expertise, product availability, and regional presence to serve India's growing industrial and infrastructure sectors.
• Alpha Recyclage CompositesminorStrategic or Co-development Partner · 25 June 2025Westlake Epoxy announced a collaboration with Alpha Recyclage Composites to support the French company's recycling capacity scale-up for carbon fiber composite materials. Alpha Recyclage Composites is expanding to a semi-continuous process targeting 1,000 metric tons of waste carbon fiber composites recycled per year by 2027. The partnership connects Westlake's composite customers to Alpha's expanded recycling capacity while helping them develop circular options for production scrap and end-of-life waste.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Evonik Industries: Evonik's specialty additives and resins portfolio includes epoxy curing agents and formulated systems serving coatings and composites. Evonik competes with Westlake Epoxy at the curing-agent/formulated-system layer rather than as a primary resin producer.
• BASF: BASF is a broad chemical incumbent with a significant epoxy resins offering (and BPA upstream) serving coatings, composites, and construction. It competes with Westlake Epoxy across multiple application segments while also fielding competing alternatives (PU, acrylics) to epoxy systems.
• Dow Chemical: Dow is a broad chemical incumbent producing epoxy resins, BPA, and downstream formulated systems that compete with Westlake Epoxy in coatings, infrastructure, and electronics. Although Dow's epoxy business is one segment among many, it overlaps directly with Westlake's product lines.
• 3M: 3M's Industrial Adhesives & Tapes division includes epoxy-based structural adhesives and formulated systems that compete with Westlake Epoxy's bonding-paste and adhesive products in automotive, aerospace, and electronics applications.

Direct peers

• Sika AG: Sika is a major specialty adhesives and coatings formulator that both consumes and competes with epoxy systems for construction, automotive, and industrial bonding. Its epoxy-based structural adhesives overlap directly with Westlake Epoxy's downstream bonding-paste and adhesive offerings.
• Huntsman Corporation: Huntsman's Advanced Materials segment produces epoxy resins, curing agents, and formulated systems directly competing with Westlake Epoxy in coatings, composites, and adhesives. Both companies sell into aerospace, automotive, wind, and electronics with overlapping technical sales coverage.
• Aditya Birla Chemicals (Epoxy Division): Aditya Birla's epoxy division is one of the largest Asia-based liquid epoxy resin producers and competes directly with Westlake Epoxy in commodity and semi-specialty grades for coatings, construction, and electrical applications globally.
• Olin Corporation: Olin's Epoxy & Resins segment is a major global producer of liquid epoxy resins, downstream curing agents, and BPA—the same upstream/downstream value chain that Westlake Epoxy operates in. Direct head-to-head competitor in commodity and specialty epoxy grades.
• Kukdo Chemical: Kukdo Chemical is a leading Korean producer of liquid epoxy resins and BPA-based systems, competing with Westlake Epoxy in commodity and mid-grade epoxy for coatings, electronics, and construction particularly across Asia and the EMEA region.
• Hexion (Adhesive Technologies / Coatings & Composites): Hexion divested its epoxy business to Westlake in 2020 but retains adjacent forestry and adhesives/resins operations that compete for the same downstream customers. As the historical parent of the business Westlake operates, it remains the closest like-for-like competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/westlake-epoxy

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Westlake Epoxy