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GP Clear Resin — clear orthophthalic general-purpose unsaturated polyester resin; Samrat Poly Resins product graphic
GP Resins

GP Clear Resin

Clear, general-purpose orthophthalic polyester resin.

Samrat Poly Resins supplies this clear general-purpose polyester resin to FRP manufacturers in India for hand lay-up, spray-up, moulding and general lamination work.

Price

Price on Request

Industrial resin pricing varies based on:

  • Order Quantity
  • Resin Grade
  • Current Raw Material Rates
Request Bulk Quote

Product details

Minimum Order Quantity1,000 kg
Packaging225 kg Drum
Physical FormLiquid
Colour / AppearanceClear
Shelf Life3 months (225 kg drum) / 2 months (PET packaging)
Storage Temperature30–35 °C

Technical specifications

Resin TypeOrthophthalic, Unsaturated Polyester
Curing SystemNon-accelerated
Viscosity350–450 cPs
Gel Time< 8 minutes
Styrene Content33–40%
Specific Gravity / DensityNot part of the published specification for this grade
Cure Time45 minutes – 1.5 hours
MEKP Dosage1.5%
Cobalt Octoate Dosage0.4%
Purity99%

GP Clear Resin is a clear, orthophthalic unsaturated polyester resin developed by Samrat Poly Resins for everyday FRP and composite manufacturing. Supplied as a non-accelerated liquid with a viscosity of 350–450 cPs and a gel time under 8 minutes, it wets out reinforcement quickly and cures at room temperature once catalysed with MEKP and a cobalt octoate accelerator. With a balanced 33–40% styrene content and 99% purity, it delivers consistent, cost-effective performance across hand layup, spray-up, moulding and lamination — a dependable general-purpose polyester resin for a wide range of composite products.

In practice, GP Clear Resin is catalysed with an MEKP hardener and a cobalt accelerator, then reinforced with glass fibre for hand layup and spray-up. Pair it with a gelcoat resin for a durable moulded surface, step up to vinyl ester resin where higher chemical and corrosion resistance is required, or see lamination resin for door-lamination and FRP bonding work.

What is GP Clear Resin?

GP Clear Resin is Samrat Poly Resins’ clear, orthophthalic general-purpose polyester resin for fabricators producing FRP components. It is a liquid resin grade intended to wet out glass-fibre reinforcement in routine composite manufacturing.

It is relevant where a buyer needs a clear GP grade for common hand lay-up, spray-up, moulding and general FRP lamination processes. Where resin colour is relevant, compare it with GP Yellow Resin; the clear resin itself does not define the final appearance of a reinforced, pigmented or surface-finished FRP part.

Key features

  • Clear orthophthalic unsaturated polyester base for general-purpose FRP work
  • Low viscosity (350–450 cPs) for excellent wet-out and easy impregnation
  • Fast gel time under 8 minutes for quicker layup cycles
  • Non-accelerated system — dose MEKP and cobalt accelerator to suit workshop conditions
  • Balanced 33–40% styrene content and 99% purity
  • Consistent 99% purity with batch-to-batch reliability
  • Supplied in 225 kg drums; minimum order 1,000 kg

Applications

  • Hand layup and spray-up laminates
  • FRP water tanks, roofing sheets and sanitaryware
  • Panels, moulding and cooling tower components
  • General-purpose composite and FRP products

What this means for FRP buyers

Clear-grade selection

The published clear appearance is a useful selection point where resin colour matters in the process. It should be assessed separately from the finished laminate, pigment and surface-finish requirement.

Process flexibility

The published viscosity and non-accelerated curing system support common hand lay-up, spray-up, moulding and lamination workflows.

Procurement details are available

Review the TDS, 225 kg drum packaging and 1,000 kg minimum order quantity before requesting a quote for your requirement.

Industries we serve

  • FRP & composites manufacturing
  • Water tanks & storage
  • Construction, roofing & panels
  • Sanitaryware & bathware moulding
  • Cooling towers & industrial FRP
  • General moulding & fabrication

Why choose Samrat Poly Resins

  • ISO 9001:2015 certified quality management system
  • Manufacturing polyester resins since 2017
  • GST-registered Indian manufacturer (GSTIN 03ALBPS3446G1ZB)
  • Consistent 99% purity with batch-to-batch quality control
  • Bulk supply from 1,000 kg, packed in 225 kg drums
  • Dispatch across North & East India, with exports to Nepal and Bangladesh

Clear GP Resin for common FRP processes

GP Clear Resin is the clear GP grade to review for the existing hand lay-up, spray-up and general FRP lamination process guides. Its published viscosity, gel time and clear appearance should be considered with the part geometry, reinforcement, mould, temperature and production setup—not as stand-alone proof of process fit.

Explore the process guides for hand lay-up, spray-up and general FRP lamination before finalising a requirement.

Discuss your process

Explore applications

See how GP Clear Resin performs in specific FRP manufacturing applications.

Sectional FRP water storage tank built from glass-fibre-reinforced polyester panels

Resin for Water Tank Manufacturing

Water tank manufacturers need a resin that wets out glass reinforcement cleanly and cures into a strong, leak-resistant laminate for long-term structural integrity.

✓ Consistent wall thickness, no weak spots.

Recommended productGP Clear Resin
Industrial FRP cooling tower with moulded casing panels

Resin for Cooling Tower Manufacturing

Cooling tower components face constant moisture and temperature cycling, demanding a laminate with lasting mechanical strength and chemical resistance.

✓ Built to withstand continuous wet/dry cycling.

Recommended productGP Clear Resin
Translucent corrugated FRP roofing sheets fitted over an industrial building frame

Resin for Roofing Sheet Manufacturing

Roofing and cladding sheet manufacturers need even lamination across large panel areas, without pooling or dry patches that weaken the sheet.

✓ Even lamination across large sheet formats.

Recommended productGP Clear Resin
FRP double door with moulded panel design and decorative metal grille

Resin for FRP Door Manufacturing

FRP doors need a laminate that bonds well to the door-skin substrate and holds its shape and strength through years of daily use.

✓ Dimensionally stable, long service life.

Recommended productGP Clear Resin
Moulded metallic-finish door skin panel with decorative embossed design

Resin for Door Skin Manufacturing

Door skin production calls for excellent wet-out and a clean, glass-like cured finish straight out of the mould.

✓ Clean, high-gloss finish on every skin.

Recommended productGP Clear Resin
Stack of coloured textured FRP panel sheet samples

Resin for FRP Panel Manufacturing

General FRP panels — from partitions to enclosures — need a resin that processes predictably at volume, batch after batch.

✓ Fast, predictable cure for volume production.

Recommended productGP Clear Resin
Diagram of the hand lay-up process showing resin poured into a mould tool and worked in with a roller

Resin for Hand Lay-Up Process

Hand lay-up is the most common FRP fabrication method, and it depends on a resin that wets out reinforcement by hand without dragging or pooling.

✓ Smooth hand application, no dragging.

Recommended productGP Clear Resin
Diagram of the spray-up process showing a chopper gun depositing resin and fibre into a gelcoated mould

Resin for Spray-Up Process

Spray-up production needs a resin that atomises cleanly through spray equipment and gels on a predictable schedule.

✓ Full control over gel timing at scale.

Recommended productGP Clear Resin
FRP marine and boat components built from glass-reinforced polyester composite

Resin for Boat & Marine Components

Marine and boat components need proven wet-out over glass fibre reinforcement and reliable strength once the laminate cures.

✓ Reliable wet-out for hulls and marine parts.

Recommended productGP Clear Resin
Stack of coloured corrugated FRP laminate sheets

Resin for General FRP Lamination

Whatever the lamination job, fabricators need one resin whose viscosity, gel time and strength stay consistent across varied work.

✓ One dependable resin for varied lamination work.

Recommended productGP Clear Resin
Stack of coloured FRP moulded grating panels in a range of sizes

Resin for General FRP Moulded Products

From tanks to novelty mouldings, general FRP moulded products need a laminate that cures reliably and releases cleanly from the mould.

✓ Consistent results across varied mould work.

Recommended productGP Clear Resin

Frequently asked questions

GP Clear Resin is a clear, orthophthalic unsaturated polyester resin used for general-purpose FRP manufacturing — including hand layup, spray-up, moulding and lamination. It is supplied by Samrat Poly Resins as a non-accelerated liquid in 225 kg drums.

It is an orthophthalic unsaturated polyester resin, formulated for general-purpose composite work where balanced mechanical performance and cost-efficiency are required.

Gel time is under 8 minutes. As a non-accelerated resin it is cured at room temperature by adding a cobalt octoate accelerator (around 0.4%) and an MEKP catalyst (around 1.5%); full cure typically takes 45 minutes to 1.5 hours depending on temperature and dosage.

Viscosity is 350–450 cPs, styrene content is 33–40% and purity is 99%. Specific gravity / density is not part of the published specification set for this grade — the current TDS states it is intentionally excluded.

It is supplied in 225 kg drums, with a minimum order quantity of 1,000 kg. Bulk and repeat-order pricing is available on request.

Shelf life is 3 months in a sealed 225 kg drum and 2 months in PET packaging. Store between 30–35 °C, away from direct heat, sparks and sunlight.

GP Clear Resin is a general-purpose orthophthalic resin for a broad range of FRP work, while Lamination Resin is tuned specifically for door-lamination and FRP bonding. For lamination-focused projects, choose the Lamination Resin grade.

Both are general-purpose orthophthalic polyester resins for FRP work. GP Clear Resin is clear, with a 350–450 cPs viscosity and gel time under 8 minutes. GP Yellow Resin is transparent yellow, thicker and slower-gelling. Where a colourless resin matters in the finished process, GP Clear Resin is the relevant grade to discuss.

Please share the expected quantity, application or manufacturing process, any grade requirement, and delivery location. This helps the sales team understand the requirement before preparing a quote.

When to consider a different resin

GP Clear Resin vs GP Yellow Resin

Both are general-purpose orthophthalic grades for FRP. Start with the required resin colour and the published viscosity and gel-time range; GP Clear Resin is the clear grade, while GP Yellow Resin is the transparent-yellow alternative.

GP Clear Resin vs Lamination Resin

GP Clear Resin is the broader option for general FRP work. Lamination Resin is the product to review for door lamination, plywood lamination and FRP bonding requirements.

GP Clear Resin vs Vinyl Ester Resin

GP Clear Resin is a general-purpose orthophthalic grade. For a project with a specified chemical- or corrosion-resistance requirement, review the Vinyl Ester Resin technical data and discuss the application.

GP Clear Resin vs Gelcoat Resin

GP Clear Resin is used to build the laminate. GP Gelcoat Resin is a mould-surface coating; the two can be used in the same FRP manufacturing sequence for different roles.

Technical resources

GP Resin Knowledge Hub

Use these existing Samrat Poly Resins guides to understand the GP resin role before reviewing the clear-grade decision, applications and buyer checks.

GP Clear Resin comparisons and processing guides

GP Clear Resin vs GP Yellow Resin

Compare GP Clear and GP Yellow Resin by supplied colour, published viscosity and gel time before selecting a general-purpose FRP grade.

2 min readRead Article →

GP Resin vs Lamination Resin (LR Resin)

Understand the difference between general-purpose GP resin and Lamination Resin for FRP work, door lamination and bonding requirements.

2 min readRead Article →

GP Resin vs Vinyl Ester Resin

Compare general-purpose GP polyester resin and vinyl ester resin when an FRP project has different process or chemical-resistance requirements.

2 min readRead Article →

GP Resin vs Gelcoat Resin

Learn the different roles of GP resin and gelcoat resin in an FRP laminate, from structural build-up to the mould-facing surface.

2 min readRead Article →

Why GP Resin Is Yellow or Turns Yellow

A practical guide to understanding intentional yellow GP resin and unexpected colour change, what to check first and when to discuss a batch or process with the supplier.

2 min readRead Article →

Why Polyester Resin Remains Sticky or Tacky

Understand common reasons a polyester resin surface may remain sticky or tacky, the checks to make and the details to share with a supplier.

2 min readRead Article →

How to Reduce Shrinkage in GP Resin Applications

A practical guide to understanding shrinkage in GP resin applications and the process questions to resolve before production.

2 min readRead Article →

GP Resin Viscosity Explained

Understand the published 350-450 cPs GP Clear Resin viscosity and the process checks needed for hand lay-up, spray-up and general FRP processing.

1 min readRead Article →

Manufacturer context

Manufacturing and quality information

Customer application

GP Clear Resin for FRP Roofing Sheet Lamination in Punjab

How Samrat GP Clear Resin supported more consistent FRP sheet lamination during warm-weather production.

Customer profile

A medium-sized FRP roofing sheet manufacturer based in Punjab, North India. The company manufactures FRP roofing sheets for industrial, commercial and agricultural applications.

Industry
FRP Roofing Sheet Manufacturing
Product used
Samrat GP Clear Resin
Application
FRP sheet lamination
Location
Punjab, India

Challenge

During the summer months, the manufacturer was facing variation in gel time during sheet lamination. As shop-floor temperatures increased, the existing resin became harder to process consistently, creating variation in lamination timing and requiring closer production monitoring.

The customer needed a GP Clear Resin suitable for FRP roofing sheet lamination, with dependable processing behaviour and consistent batch performance.

Solution

After understanding the application, production method and processing requirements, Samrat Poly Resins recommended Samrat GP Clear Resin for FRP sheet lamination. The customer first evaluated the resin through production trials before gradually introducing it into regular manufacturing.

Reported outcome

After adopting Samrat GP Clear Resin, the manufacturer reported improved day-to-day process consistency during warm-weather production.

  • More consistent gel-time behaviour during summer production
  • Smoother lamination workflow
  • Fewer interruptions related to resin-processing variation
  • Better confidence in batch-to-batch consistency
  • Finish quality suitable for commercial FRP roofing sheet production

“After switching to Samrat GP Clear Resin, our lamination process became more consistent. The resin performs reliably during production, and we have experienced fewer interruptions compared to our previous material.”

Production Team, FRP Roofing Sheet Manufacturer, Punjab

Why GP Clear Resin was suitable

For FRP roofing sheet manufacturers, GP Clear Resin is commonly selected where the application requires:

  • Clear general-purpose polyester resin
  • Smooth lamination performance
  • Suitable gel-time behaviour for FRP processing
  • Consistent batch quality
  • Supplier support for application discussion

This case study is based on an actual customer application. Customer-identifying details have been withheld for confidentiality. It is a reported application example, not a performance promise for every production line; review the TDS and actual process conditions before selection.

Enquiry

Request a GP Clear Resin quote

Share your quantity, application, grade requirement and delivery location so we can understand the requirement before preparing a quote.

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