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Luxchem · Polyester resin

Luxchem Polymal 8201 PT Polyester Resin

A general-purpose (GP) orthophthalic unsaturated polyester resin – thixotropic, pre-accelerated and non-waxed. For hand lay-up, spray and filament winding; just add MEKP.

BrandLuxchem
Code / GradePOLYMAL 8201 PT
TypeOrthophthalic UPR (GP), non-waxed
Packaging225 kg steel drum
Luxchem Polymal 8201 PT polyester resin
POLYMAL 8201 PT
Product overview

General-purpose resin for lay-up, spray and winding

POLYMAL 8201 PT is thixotropic (anti-sag) and pre-accelerated, so only MEKP catalyst is needed. The resin offers good heat, chemical and water resistance and bonds well to glass fiber, giving high-strength FRP parts.

Applications

  • Water and storage tanks
  • Boats and canoes; car bodies
  • Bathtubs, cooling towers
  • Flat and profiled sheets, FRP articles
  • Pipes, containers and general composite products

Liquid properties

Brookfield LVT #3, 60 rpm @ 25°C.

AppearancePink
Viscosity (25°C)400–500 mPa·s
Thixotropic index1.5–2.5
Specific gravity1.11–1.13
Acid value15–30 mgKOH/g
Non-volatile content58–63%
Gel time10–15 min

Cured casting properties

Tensile strength72 MPa
Tensile modulus4.3 GPa
Elongation at break2.2%
Flexural strength135 MPa
Flexural modulus4.25 GPa
HDT65°C
Barcol hardness50

How to use

  • Pre-accelerated: just add MEKP catalyst. Typical dosage: 1.0% MEKP (Butanox M-50).
  • Adjust gel time by changing the MEKP level.
  • Measure accurately and mix thoroughly before use.
  • Non-waxed: add a wax solution if the final surface layer must cure tack-free.
  • Styrene monomer can be added to reduce viscosity after long storage.
  • Best results are achieved when fully cured at room temperature for sufficient time.

Storage

Store in closed containers in a cool, dry, dark place below 25°C. Keep away from heat sources such as direct sunlight and steam pipes. Typical storage stability: 3 months.

Frequently asked questions

Does Polymal 8201 PT contain wax?

No. It is non-waxed; add a wax solution if the final surface layer must cure tack-free.

How much MEKP should I use?

Typical dosage is 1.0% MEKP (Butanox M-50). Adjust gel time by changing the MEKP level.

Do I need to add cobalt accelerator?

No. The resin is pre-accelerated; just add MEKP.

Which processes is it for?

Hand lay-up, spray and filament winding.

How long can it be stored?

Typical storage stability is 3 months in closed containers, in a cool, dry place below 25°C.

Request TDS / SDS

Current documents are provided by GKFRP upon request for the correct product grade and application.

Technical note

Data on this page is taken from the POLYMAL 8201 PT TDS (updated 06-2026), based on laboratory data; it is not a lot acceptance specification. Trial to confirm suitability for your process.

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