ISO Polyester Resin
Isophthalic unsaturated polyester resin for laminates facing water immersion, chemical service or sustained outdoor conditions.
Review the official product data sheet for specifications and application information.
Price
Price on Request
Industrial resin pricing varies based on:
- Order Quantity
- Resin Grade
- Current Raw Material Rates
Product details
| Product Role | Isophthalic unsaturated polyester resin |
|---|---|
| Colour / Appearance | Off-white to light beige liquid |
| Acceleration Status | Non-accelerated |
| Packaging | 225 kg industrial drum |
| Shelf Life | 3 months |
| Storage Temperature | 15–25 °C |
| Country of Origin | India |
Technical specifications
| Resin Type | Isophthalic Unsaturated Polyester Resin |
|---|---|
| Curing System | MEKP catalyst with cobalt octoate accelerator |
| Recommended Dosage | MEKP 1.5% and cobalt octoate 0.4% by weight of resin |
| Viscosity | 500 cPs (mPa·s) at 25 °C |
| Gel Time | 15 minutes at 25 °C |
| Peak Exotherm | 190 °C, reached in 25 minutes |
| Specific Gravity | 1.12 g/cm³ at 25 °C |
| Styrene Content | 40% by weight |
| Acid Value | 16 mg KOH/g |
| Heat Deflection Temperature | 90 °C (cured resin) |
| Tensile Strength / Modulus | 75 MPa / 3,500 MPa (cured resin) |
| Elongation at Break | 3.0% (cured resin) |
| Flexural Strength / Modulus | 125 MPa / 3,700 MPa (cured resin) |
| Barcol Hardness | 42 |
| Water Absorption | 0.15% by weight after 24 h |
| Flash Point | 34 °C, closed cup |
ISO Polyester Resin is an isophthalic unsaturated polyester resin manufactured by Samrat Poly Resins. Isophthalic resins are built on isophthalic acid rather than the phthalic anhydride used in general-purpose orthophthalic grades. In general industry terms that difference allows a higher-molecular-weight polyester chain, which is why isophthalic resins are normally specified where a laminate faces water immersion, chemical service or sustained outdoor conditions rather than routine dry FRP work. Samrat Poly Resins supplies this grade for those more demanding FRP applications.
Where the requirement is routine general-purpose FRP lamination rather than chemical or water service, our orthophthalic grades such as GP Clear Resin and Unsaturated Polyester Resin are the usual route. Where the service medium is aggressive and a stated chemical-resistance requirement applies, review Vinyl Ester Resin as well. Share the FRP component, service medium and operating condition with your enquiry so the right grade can be confirmed.
Key features
- Isophthalic backbone rather than the orthophthalic chemistry used in general-purpose grades
- Positioned for chemical, water and hydrolysis resistance in FRP service
- Room-temperature cure with MEKP catalyst and cobalt octoate accelerator
- Supplied in 225 kg industrial drums
- Manufactured by Samrat Poly Resins at Doraha, Punjab
Applications
- Laminates facing water immersion or sustained damp service
- Chemical service FRP where a resistance requirement applies
- Components in sustained outdoor conditions
- Tanks, linings and corrosion-resistant FRP
