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Home / Products / GRP Vinyl Ester Resin

GRP Vinyl Ester Resin

Premium vinyl ester resin for chemical-resistant GRP linings in aggressive service conditions.

Chemical GradeSuperior ResistanceMEKP CatalysedHand Lay-Up
FORMPre-accelerated liquid
CATALYSTMEKP 1.5–2%
GEL TIME20–40 min
SHELF LIFE6 months
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Overview

When polyester isn't enough. Chemical-grade strength.

GRP Vinyl Ester Resin is a premium vinyl ester resin combining the easy handling of polyester with the chemical and thermal resistance of epoxy. Used where polyester resins cannot withstand the chemical exposure – acid storage, chemical processing, and aggressive industrial environments.

The specification for GRP linings in chemical and petrochemical service.

Key Features

  • Superior chemical resistance vs polyester
  • Combines polyester handling with epoxy performance
  • Hand lay-up compatible
  • Higher heat distortion temperature
  • Excellent fibre wet-out
  • Pre-accelerated for room-temperature cure

Technical Specs

Technical Specifications

All values measured at 23°C unless noted. Full test data available in the datasheet.

PropertyValueUnit
FormLiquid pre-accelerated resin–
ColourPale amber / yellow–
Density1.05 ± 0.02g/cm³
Viscosity300–500mPa·s
Styrene content35–40%
Catalyst (MEKP)1.5–2%
Gel time at 25°C20–40min
Cure time at 25°C3–6hours
HDT (cured)≥ 100°C
Tensile strength (laminate)≥ 110MPa
Flexural strength (laminate)≥ 170MPa
Chemical resistanceExcellent (acids, alkalis)–
Packaging20 / 200kg
StandardsBS 4994 · ASME RTP-1–

Applications

Where this product is used

Six typical site applications where our crews specify this product.

🧪

Chemical storage

Chemical and acid storage tank linings.

⛽

Petrochemical

Petrochemical plant linings.

🛢️

Process vessels

GRP process vessel linings.

💧

Demineralised water

Treated water storage.

🌊

Marine corrosive

Marine corrosive-environment applications.

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Industrial wastewater

Industrial wastewater treatment linings.

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