Atlac 490-901 is a chemical-resistant vinyl ester resin engineered for fiberglass-reinforced plastic (FRP) equipment that must withstand prolonged contact with hydrocarbons and solvents. Composite fabricators building underground fuel storage tanks, chemical process piping, and secondary containment systems specify Atlac 490-901 when solvent resistance and long-term laminate integrity are the primary purchasing criteria.
Key Benefits of Atlac 490-901 for Hydrocarbon-Resistant FRP
Atlac 490-901 is formulated to deliver excellent corrosion resistance against gasoline, kerosene, heating oil, and crude oils, making it a preferred matrix resin for fuel-contact composite structures. Buyers sourcing this resin for tank and piping applications benefit from several performance characteristics documented for this resin system.
- Excellent corrosion resistance to gasoline, kerosene, heating oil, and crude oils
- High mechanical properties suited to structural FRP laminates
- Supports continued process operation with reduced downtime
- Contributes to extended equipment service life in hydrocarbon service
- Good chemical resistance to acids, aqueous salt solutions, and organic solvents
Applications and Approved Uses
This resin is designed for common composite manufacturing processes including hand lay-up, spray-up, filament winding, and pultrusion. The solvent resistance built into this chemical-resistant vinyl ester makes it well suited for GRP tanks, pipes, and linings that handle liquid hydrocarbons on a continuous basis.
Underground Fuel Storage Tank Approval
This resin is approved as a matrix material for FRP tanks used in underground fuel storage according to BRL K548/01. For sourcing managers responding to regulatory or insurance requirements around underground storage, this approval status is often a deciding factor when selecting a chemical-resistant vinyl ester over a general-purpose alternative.
Flake Glass Lining and Polypropylene-Lined Equipment
Beyond tanks and pipes, it can be used to formulate flake glass lining compounds and is recommended for the GRP reinforcement layers of equipment fitted with polypropylene liners. This combination is common in chemical process vessels where a corrosion-resistant thermoplastic liner needs a structural composite backing that will not degrade under repeated thermal cycling.
Elevated Temperature and Long-Term Chemical Exposure
The resin shows excellent retention of laminate properties at elevated temperature, along with good chemical resistance to acids, aqueous salt solutions, and organic solvents. Fabricators qualifying a resin for continuous hydrocarbon or acid exposure should request its technical data sheet and confirm cure schedule, glass transition temperature, and post-cure requirements before committing to a production run.
Sourcing Atlac 490-901 for Your Project
Composite material buyers can review our full resin product category for related vinyl ester and unsaturated polyester options alongside this product. For technical background on FRP tank design standards referenced by underground storage applications, see the ASTM composite material standards. Our team can support supply chain resource coordination for projects specifying this resin or comparable recommended international brand resin products.
Frequently Asked Questions
What processes is Atlac 490-901 suitable for?
This resin is designed for hand lay-up, spray-up, filament winding, and pultrusion processes commonly used to build FRP tanks, pipes, and linings.
Is Atlac 490-901 approved for underground fuel storage tanks?
Yes. It is approved as a matrix material for FRP underground fuel storage tanks according to BRL K548/01.
What chemicals does Atlac 490-901 resist?
This resin offers corrosion resistance to gasoline, kerosene, heating oil, crude oils, acids, aqueous salt solutions, and organic solvents.
Can Atlac 490-901 be used with polypropylene-lined equipment?
Yes. It is recommended for the GRP reinforcement layers of equipment with polypropylene liners and can also formulate flake glass lining compounds.
How do I request a quote for Atlac 490-901?
Contact our sourcing team with your project volume, cure process, and application details, and we will help match supply of this resin to your production schedule.
Ready to move forward? Submit an inquiry for this resin today and our composite materials team will confirm availability, technical data sheets, and lead times for your project.
