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RESINS · Polyester Resin

Sewon POLYSTAR R8336PT Polyester Resin

A prepromoted, non-waxed polyester resin with fast wet-out for hand lay-up and spray-up.

BrandSewon Chemical
TypePolyester · Non-wax
ProcessHand lay-up · Spray-up
ApplicationBathtubs · FRP tanks
Product overview

Laminating resin for spray-up and hand lay-up

POLYSTAR R8336PT is designed for fast wet-out and roll-out, good thin-section cure and early development of Barcol hardness.

Key TDS data

  • Specific gravity: 1.08–1.12 at 25°C
  • Viscosity: 4.5–5.0 dPa·s at 25°C
  • Thixotropic index: 1.8–2.8
  • Gel time: 22–27 minutes at 25°C
  • Typical HDT: 70–80°C
  • TDS gel data: 1.0 phr 55% MEKPO

How to use

  • Prepromoted resin; only MEKPO needs to be added. At 25°C with 1.0 phr MEKPO 55%, gel time is 22–27 minutes.
  • Fast wet-out and roll-out, good cure in thin layers and early Barcol hardness development help shorten demolding time.

Choosing the right grade

Compared with R8236PT, R8336PT gels faster and has better heat resistance (HDT 70–80°C). Choose R8336PT for shorter cycles or higher service temperatures; choose R8236PT when large parts need more working time.

Storage

Store in a cool place away from sunlight and heat sources; keep containers closed after opening.

Request TDS / SDS

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

Technical note

Values are taken from the supplied TDS and are not batch acceptance specifications. Review the current TDS/SDS and validate moulding or cure conditions before production.

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