Unsaturated Isophthalic Polyester Resin
Product code PRX-ISO-100Our unsaturated isophthalic polyester resin is a low-viscosity, medium-reactivity, preaccelerated liquid system. The product is suitable for marine, boat, pipe, and tank applications, as well as for injection moulding, RTM, and vacuum infusion processes.
Technical overview
Our unsaturated isophthalic polyester resin in styrene is formulated with pre-acceleration for medium-reactivity processing. It is supplied as a low-viscosity amber liquid at 1.07-1.11 g/cm³, with a styrene content of 46-50% and a cone and plate viscosity of 200-250 mPa·s. The product is suitable for marine applications, pipes and tanks, with processing methods including injection moulding, resin transfer moulding and vacuum infusion.
When fully postcured, the cured unreinforced resin exhibits a tensile strength of 76 MPa, a tensile modulus of 3650 MPa, and an elongation at break of 3.5%. Flexural properties are a flexural strength of 140 MPa and a flexural modulus of 3550 MPa. Heat deflection temperature (HDT) is 86°C under ISO 75-2A (2013) conditions, and Barcol hardness at 25°C reaches 40. Volumetric shrinkage is 7.5%.
Applications
Specified across sectors where this material fits the application.
Specification
| Property | Value | Unit |
|---|---|---|
| Viscosity | 200 | mPa·s |
| Size content | 46 | % |
| Pot life | 90 | minutes |
| Tensile strain (MD) | 3.5 | % |
| Other | ||
| Specific weight | 1.07 (at 23°C) | g/cm³ |
| Acid value | 14 (ISO 2114, <) | mgKOH/g |
| Shelf life at 23°C in the dark | 6 (G180) | months |
| Tensile strength | 76 (ISO 527 (2012), fully postcured) | MPa |
| Tensile modulus | 3650 (ISO 527 (2012), fully postcured) | MPa |
| Flexural strength | 140 (ISO 178/B (2010), fully postcured) | MPa |
| Flexural modulus | 3550 (ISO 178/B (2010), fully postcured) | MPa |
| Heat deflection temperature | 86 (ISO 75-2A (2013), fully postcured) | °C |
| Barcol hardness at 25°C | 40 (ASTM D 2583 (2007), fully postcured) | |
| Volumetric shrinkage | 7.5 (fully postcured) | % |
Safety and handling
Storage, shelf life and handling guidance for this product, transcribed from the manufacturer's datasheet.
- Storage
- Store in the shade, out of direct sunlight. Keep storage temperature below 25°C. Unseal container just before use. Shelf life will be reduced reaching higher temperature. Keep in a dry, cool and well-ventilated place. Keep at temperature not exceeding 30°C. Keep away from heat and sources of ignition.
- Shelf life
- 6 months at 23°C in the dark
- Hazard statements
- H226 Flammable liquid and vapour
- H315 Causes skin irritation
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H361d Suspected of damaging the unborn child
- H372 Causes damage to organs through prolonged or repeated exposure if inhaled
- H412 Harmful to aquatic life with long lasting effects
Full safety datasheet is available on request.
Life cycle assessment
An indicative cradle-to-gate carbon estimate for this material, supplier-agnostic and shown as a range. A guide for specification and comparison, not a verified declaration.
Cradle to gate covers raw material, manufacturing and inbound transport to Allbase; customer delivery is excluded. All figures are estimates, shown as a range.
Published industry category data and UK Government greenhouse gas conversion factors.
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