What Alexium International does

Alexium International Group Limited is an ASX-listed specialty chemicals company (ASX:AJX) that develops and manufactures microencapsulated phase change materials (PCM) and flame retardant (FR) chemistries for thermal management applications in textiles, foams, and specialty materials. Founded in 2009 in Perth, Australia by British and Australian entrepreneurs who acquired rights to Reactive Surface Treatment technology from the US Air Force Research Laboratory, the company now operates from its headquarters and primary manufacturing facility in Greer, South Carolina, with a second production site in Dayton, Ohio acquired through the December 2025 purchase of Microtek Laboratories.

The company's core technology centers on proprietary microencapsulation processes that encapsulate PCM cores capable of absorbing, storing, and releasing thermal energy to regulate temperature. The portfolio includes thermal regulation products (AlexiCool, BioCool, Eclipsys, DelCool, Phonon, plus acquired NexTek, Vivtek, and Micronal lines) and flame retardant treatments (AlexiFlam, AlexiShield, AlexiGuard). BioCool delivers industry-leading enthalpy of over 200 J/g with 94% biobased content; Eclipsys and Phonon provide patent-pending perpetual cooling systems that enhance cooling rates by up to 200%; AlexiFlam is EPA-approved and wash-durable for 50+ industrial launderings. The company holds 25+ global patent applications and has secured USDA BioPreferred, OEKO-TEX, REACH, and EPA certifications.

Alexium operates a B2B enterprise sales model, selling chemical formulations and finished textile components directly to manufacturers via supply agreements, custom formulation services, and collaborative R&D partnerships. Cooling technologies for bedding applications represent over 90% of product sales, with customer segments spanning consumer bedding manufacturers (mattress ticking, foam layers, pillows, mattress pads), military and defense (uniforms, tactical gear for approximately 2 million US personnel), workwear and protective apparel, and industrial/specialty materials. Named customers include Soft-Tex and unnamed major bedding retailers. The December 2025 Microtek acquisition added manufacturing scale and formulator-facing product lines (NexTek, Micronal), and the company launched the Predictive Thermal Profile (PTP) modeling tool at ISPA Expo 2026 to help manufacturers simulate layered mattress thermal performance.

Name

Alexium International

Legal name

Alexium International Group Limited

Website

https://alexiuminternational.com

Company type

Public

Founded year

2009

Operating status

Operating

Headcount range

11–50 employees

Short description

Alexium International is an ASX-listed specialty chemicals company that develops microencapsulated phase change materials and flame retardant chemistries for thermal management, serving bedding manufacturers, military/defense, and workwear markets with drop-in chemical formulations.

Ownership category

akta.pro rank

Product category

Specialty Chemicals (Phase Change Materials & Flame Retardants)

SIC

Miscellaneous Chemical Products (2890)

akta.pro primary industry

Coating & Finishing Chemicals Application (Resins/Softening/Water-Repellent/FR/Antimicrobial) (IMAOACAD)

Keywords

• Phase change materials
• Microencapsulation chemistry
• Flame retardant treatments
• Thermal management textiles
• Cooling fabric technology

Headquarters

HQ city

Greer

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. PCM and Microencapsulation Products: Sale of phase change materials including AlexiCool, BioCool, Eclipsys, DelCool products for thermal management in bedding, textiles, and foam applications. Products sold as formulated coatings, dry powder, wet cake, and slurry forms.
2. Flame Retardant Solutions: Sale of AlexiFlam and AlexiShield flame retardant chemical treatments and finished textile components for mattresses, military uniforms, and workwear applications.
3. Custom Formulation Services: Collaborative R&D and custom formulation development services where Alexium works with partners' R&D teams to develop tailored solutions. Revenue from technical consultation and formulation development.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Alexium International develops and manufactures proprietary microencapsulated phase change materials (mPCMs) and non-toxic flame retardant (FR) chemical treatments sold to bedding, mattress, military uniform, and apparel manufacturers. The portfolio includes Thermal Regulation products (AlexiCool, BioCool, Eclipsys, DelCool) and Flame Retardant products (AlexiFlam, AlexiShield, AlexiGuard), plus acquired Microtek brands (NexTek, Vivtek, Micronal). Products are delivered as formulated coatings, dry powder, wet cake, slurry, or finished textile components and engineered to integrate with manufacturers' existing finishing equipment.

Product overview

Alexium International is a chemical innovator specializing in advanced phase-change materials (PCMs), microencapsulation technologies, thermal-management coatings, and flame-retardant systems. The product portfolio consists of two main categories: Thermal Regulation solutions (Alexicool, BioCool, Eclipsys, DelCool) and Flame Retardant solutions (Alexiflam, AlexiShield, AlexiGuard). Following the December 2025 acquisition of Microtek Laboratories, the portfolio expanded to include NexTek, Vivtek, and Micronal microencapsulated PCM products. Products are designed as drop-in solutions for foam, textile, and specialty materials manufacturers in bedding, military, transportation, and apparel markets. The company operates vertically integrated manufacturing facilities in Greer, SC and Dayton, OH.

Differentiator

Problem solved

Functional benefit

Brands

• AlexiCool®: Flagship formulated PCM technology featuring triple cooling attribute with embedded active heat absorption, moisture management, and conductive cooling. Microplastic-free and best-value PCM in the portfolio.
• BioCool®
• Eclipsys®
• DelCool™
• AlexiFlam®
• AlexiShield
• NexTek
• Vivtek
• AlexiGuard®

Products and services

• AlexiCool PCM Flagship microencapsulated phase change material finishing treatment for bedding and apparel fabrics that absorbs and releases thermal energy to provide immediate, long-lasting cooling. Targets mattress, pillow, and top-of-bed manufacturers and is durable through 25+ laundry cycles.
• BioCool PCM Biobased microencapsulated PCM with 94% biobased content and industry-leading enthalpy of over 200 J/g, registered in the USDA BioPreferred program. Recrystallizes faster than competing PCMs for enhanced self-recharging thermal regulation in bedding and apparel.
• Eclipsys Perpetual Cooling Technology Patent-pending perpetual cooling system for bedding that continuously funnels heat away from the body without requiring PCM reset time, enhancing cooling experience by up to 200% versus incumbent technologies. Adaptively increases cooling as body temperature rises.
• DelCool Thermal Regulation Patent-pending 3-layer fabric ensemble technology that manages humidity to deliver improved thermal comfort, reducing the perceived heat index of the sleeper by +8°F for 8+ hours per night. Aimed at bedding manufacturers seeking humidity-aware thermal regulation.
• AlexiFlam NF Flame Retardant Wash-durable, EPA-approved, phosphorus-based flame retardant chemical treatment for cotton and cellulose-based textiles, free of halogens and formaldehyde. Designed for use with standard textile finishing equipment, with durability to 50+ industrial launderings.
• AlexiShield Flame Retardant Water-resistant flame retardant treatment free of glass fibers, organohalogens, organophosphorus, and nanoparticle-based materials. Available as a chemical finish for textile/foam applications or as finished socks for mattresses; supports 16 CFR 1633 flammability compliance.
• AlexiGuard Flame Retardant (Military) Supplemental flame retardant treatment designed for nylon/cotton (NyCo) fabric blends used in US military uniforms and tactical gear. Provides self-extinguishing behavior, excellent char formation, breathability, and durability to tears and washing for defense textile applications.
• NexTek Microencapsulated PCM Economically priced microencapsulated PCM product for formulators applying coatings to textiles and foams or infusing foams and other substrates. Optimized for a cool-to-the-touch effect in mid-market and specialty materials applications.
• Vivtek Microencapsulated PCM Premium microencapsulated PCM for formulators featuring a bio-based core and long-lasting cooling performance. Sold to specialty materials formulators integrating mPCM into premium textile and foam products.
• Micronal PCM Microencapsulated PCM product line from the Microtek Laboratories acquisition used in thermal-management applications across textiles, foams, and specialty materials.
• AlexiCool Phonon Cooling Technology Patent-pending phonon-based cooling technology for consumer products that enhances cooling rate by up to 200% versus incumbent products while delivering perpetual, adaptive cooling that intensifies as body temperature rises. Non-flammable, non-toxic, and environmentally friendly.
• Total Mattress Cooling System (TMCS) Integrated mattress cooling system combining four AlexiCool products and the Predictive Thermal Profile modeling tool to deliver enhanced, extended overnight cooling through layered mattress constructions. Sold to mattress manufacturers as a complete cooling stack solution.
• Predictive Thermal Profile (PTP) Proprietary modeling program that generates theoretical cooling performance data for bedding components, enabling manufacturers to analyze cumulative thermal performance of layered mattress constructions before investing in full production runs. Launched at ISPA Expo 2026 as a standalone engineering tool.
• Custom Formulation & Collaborative R&D Services Custom formulation and collaborative R&D services in which Alexium works directly with manufacturer R&D teams to develop tailored PCM and FR solutions, supported by on-site technical consultation and agile prototyping. Provided alongside product sales to enterprise customers.

Quantifiable outcome

• Eclipsys enhances cooling experience by up to 200% compared to current technologies on the market
• +6 more outcomes

Named customers2 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Partnerships

One partnership is on record.

• Microtek LaboratoriescoreStrategic or Co-development Partner · 15 December 2025Acquisition of Microtek Laboratories from CAVU Group in December 2025, bringing together two of the industry's most established innovators in microencapsulation and PCM chemistry. Acquisition includes full microencapsulation and PCM business, associated intellectual property, state-of-the-art manufacturing plant, formulations, and decades of encapsulation expertise. Microtek's NexTek and Micronal product lines complement Alexium's existing portfolio. Adaptek temperature-controlled packaging division excluded from transaction.

Scale indicators15 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Outlast Technologies: US/German-origin pioneer in microencapsulated phase-change materials for textiles, bedding, and apparel with Thermocules technology licensing to mattress and apparel brands — the closest direct analogue to Alexium's PCM microencapsulation business targeting bedding and apparel.
• Devan Chemicals: Belgian textile finishing chemical manufacturer with a portfolio spanning microencapsulated PCMs (e.g., Devan PCM/thermo-regulating finishes) and flame-retardant treatments for bedding, apparel, and workwear — directly comparable product set to Alexium's AlexiCool, BioCool, AlexiFlam, and AlexiShield lines.
• HeiQ Materials: Swiss textile-finishing technology company offering cooling (HeiQ Cool), thermo-regulating, and other performance finishes for bedding and apparel — comparable specialty chemistry platform and B2B sales motion into the same mattress/textile OEM customers.
• THOR Group: Specialty flame-retardant chemicals supplier (THOR) focused on textiles, polymers, and coatings with halogen-free and phosphorus-based formulations — comparable to Alexium's AlexiFlam and AlexiShield FR portfolio serving mattress, workwear, and military end-uses.

Broad incumbents

• Croda International: UK-listed specialty chemicals company with performance technologies for personal care, coatings, and textile/industrial applications including bio-based additives — comparable end-use exposure and B2B specialty chemical model, though much larger and more diversified.
• DuPont: Diversified specialty chemicals and materials company with FR (Nomex, Kevlar-adjacent chemistries) and performance materials for textiles, military, and protective apparel — overlaps with Alexium's AlexiGuard/AlexiFlam defense and workwear applications, though as part of a much larger portfolio.
• Eastman Chemical Company: Specialty chemicals producer with significant flame-retardant and textile/fibers adjacencies (e.g., Eastman FR intermediates), serving apparel, bedding, and industrial customers — broader incumbent with overlapping chemistry rather than niche specialization.
• Lubrizol (Berkshire Hathaway): Specialty chemicals subsidiary with textile coatings, FR, and performance additives businesses serving apparel, bedding, and industrial customers — established incumbent with comparable chemistry areas but broader portfolio than Alexium.
• BASF: Global diversified chemical major with broad PCM, microencapsulation, and flame-retardant offerings (including Micronal-type PCM and FR portfolios for textiles and foams); much broader scale and portfolio than Alexium but overlaps in core cooling-chemistry and FR categories.

Emerging players

• Sonovia: Israeli-based textile-finishing startup commercializing zinc-oxide-based and other performance finishes for antimicrobial and protective applications — emerging niche player overlapping Alexium's specialty textile chemistry focus but on different functional chemistries.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/alexium-international-group-limited
• Xx.com/alexiuminc
• Facebookfacebook.com/AlexiumInternational

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries1 record

Funding overview

Funding rounds1 record

Investors1 record

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

M&A1 record

Investments

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

Frequently asked questions about Alexium International