Isophthalic Resin Manufacturer & ISO Resin Suppliers
Direct factory isophthalic polyester resin manufacturer and bulk ISO resin supplier. Engineered for marine hulls, GRP chemical tanks, filament-wound pipes, and quartz stone slabs—with heat-stabilized export supply to Dubai/UAE, the UK, Europe, and worldwide.
Why Choose Isophthalic Resin?
Isophthalic resins offer superior performance characteristics compared to standard orthophthalic resins, making them ideal for high-performance and corrosive environments.
Superior Corrosion Resistance
Isophthalic resins offer enhanced resistance to acids, alkalis, and chemicals compared to orthophthalic resins.
Enhanced Weather Resistance
Better UV stability and weather resistance make isophthalic resins ideal for outdoor applications.
Improved Mechanical Properties
Higher strength, better elongation, and superior toughness for demanding applications.
Isophthalic Resin Properties vs. Orthophthalic Resin
| Property | Isophthalic Resin (ISO) | Orthophthalic Resin (Ortho) |
|---|---|---|
| Tensile Strength (Cast) | 70–85 MPa | 55–65 MPa |
| Elongation at Break | 3.0–4.2% (Crack resistant) | 1.8–2.5% |
| Heat Deflection Temp (HDT) | 85–105 °C | 60–72 °C |
| Water & Osmosis Barrier | Excellent (<0.18% 28d absorption) | Moderate (Ambient/dry service) |
| Chemical & Weather Resistance | Mild acids, salts, seawater, UV | Non-corrosive general environments |
| Cost | Higher | 20–35% Lower |
| Applications | Marine Hulls, GRP Pipes, Quartz | Standard FRP, Cooling Towers, Tiles |
Looking for an economical general-purpose polyester resin for non-corrosive molding?
Explore Orthophthalic Resin Grades (LC-8801 / LC-1911)Our Isophthalic Resin Products
Comprehensive range of isophthalic polyester resins for various high-performance applications
Isophthalic Resin Applications
Discover how our isophthalic resins deliver superior performance across diverse industries
Marine & Offshore
Boat hulls, offshore platforms, marine structures
Recommended Products:
Chemical Processing
Storage tanks, pipes, chemical equipment
Recommended Products:
Architectural & Construction
Daylighting panels, architectural elements
Recommended Products:
High-Performance Composites
Pultrusion profiles, structural components
Recommended Products:
Bulk ISO Resin Export to Dubai (UAE), UK & Worldwide
With 600,000 MT annual capacity, Lechi is a trusted ISO resin supplier delivering container-load isophthalic polyester resins to composite manufacturers across the Middle East, Europe, and Asia.
Middle East (Dubai, UAE & GCC)
Formulated with high-ambient inhibitor packages for summer sea freight to Jebel Ali (Dubai, UAE), Dammam, and Sohar. Widely used by GCC filament-winding plants for municipal GRP water/sewage pipes, sectional water tanks, and marine hulls.
Popular Grades: LC-199 (Anti-Corrosion Winding) · LC-8606 (Quartz Stone) · LC-3301B (Marine Lay-up)
United Kingdom & European Union
100% REACH compliant and SVHC-free isophthalic and NPG-isophthalic resins for UK and EU composite fabricators. Direct CIF/FOB container shipments to Felixstowe, Southampton, Rotterdam, and Antwerp with full SDS/COA documentation.
Popular Grades: LC-8203 (NPG Iso Sanitary/Lab) · LC-2120 (Translucent Roofing) · LC-5017 (Pultrusion)
Export Packaging & Lead Time
Supplied in UN-certified 220 kg steel drums (17.6 MT / 20ft FCL) and 1,100 kg IBC totes (19.8 MT / 20ft FCL). Standard production lead time is 7–10 working days from order confirmation, with free 1–5 kg lab samples available for qualification.
Certifications: ISO 9001:2015 · REACH · UN 1866 Class 3 DG
Technical Specifications
Comprehensive technical data for our isophthalic resin product range
Frequently Asked Questions About Isophthalic Resin
Technical and commercial guidance for purchasing and applying isophthalic polyester resins
What is isophthalic resin (ISO resin) and its key advantages?
Isophthalic resin (ISO resin) is an unsaturated polyester resin synthesized with isophthalic acid. It offers superior corrosion resistance, high tensile strength, excellent water barrier (osmosis resistance), and UV weatherability compared to standard orthophthalic resins.
What is the difference between isophthalic resin and vinyl ester resin?
Isophthalic resin delivers higher durability and chemical resistance than standard polyester resins at a cost-effective price point. Vinyl ester resin offers extreme acid/alkali resistance for harsh chemical tanks. ISO resin is the optimal balance for marine hulls, engineered stone, and anti-corrosion linings.
Do you export isophthalic resin to the UAE, UK, and North American markets?
Yes. Lechi Composites exports bulk isophthalic resin globally to Dubai/UAE, the United Kingdom, the United States, Southeast Asia, and Europe. Standard packaging includes 220kg steel drums and 1000kg IBC tanks with full TDS/MSDS and export compliance documentation.
Can isophthalic polyester resin be customized for specific gel times and viscosities?
Yes. As a direct chemical manufacturer, we provide custom formulation services adjusting viscosity (150-1900 mPa·s), thixotropy, and gel times (4-18 minutes) for hand lay-up, spray-up, pultrusion, and casting.
Request Isophthalic Resin Quote & Technical Data Sheet
Specify your target application, viscosity/gel-time window, and destination port (Dubai, UK, Europe, or worldwide) for a direct factory quotation.