Unsaturated Polyester Gel Coat Resin for FRP Protective Coatings
Buyer-facing sourcing candidate for unsaturated polyester gel coat resin used as a protective surface layer in FRP products. The listing references light yellow transparent polyester resin grades for corrosion resistance, water resistance, weather resistance, hot water resistance, PVC bonding, sanitary ware, cooling towers, bathtubs, tanks, waterproof boards, and general FRP mold gel coat applications. Overseas buyers should confirm exact grade, resin base, reactive diluent content, gel time, viscosity, solids/non-volatile content, acid value, color, inhibitor system, styrene or monomer content, CAS identification for mixture components, export documents, and dangerous goods shipping status before RFQ placement.
Quick buying facts
Identify the grade, package, and import market before comparing suppliers.
Use this page to check the product identity, common specification points, document scope, package notes, and destination-market questions before sending a China sourcing request.
CAS field is not specified on the source page; buyer should request CAS numbers for major resin and reactive diluent components and confirm whether the product is supplied as a mixtureUnsaturated polyester gel coat resin / composite resin for FRP surface protectionCandidate for RFQ with SDS, CAS/component, grade, and DG checks required
Referenced model: RC-283; other listed grades include RC-23W-1, RC-H-2096W, RC-H-2096S, RC-1240, TR-105, TR-P50, TR-34, TR-86A, TR-102
Appearance listed: light yellow transparent
Chemical category examples listed: isophthalic, o-phthalate, polyester, organic polymer
Gel time range examples at 25°C: approximately 3.5–22.0 minutes depending on grade and seasonality
Listed properties by grade: acid resistance, hot water resistance, water resistance, weather resistance, abrasion resistance, corrosion resistance, adhesion to rigid PVC, high elongation, high viscosity, thixotropy, mechanical strength
Application fields listed: corrosion-resistant resin, PVC bonding resin, gel coat matrix resin, waterproof board, heat-resistant bathtub, general FRP mold gel coat, artificial stone, resin handicrafts, general FRP surface coating
HS code shown on source page: 3907913000; buyer should verify tariff classification with final formulation and destination customs broker
CAS field is not specified on the source page; buyer should request CAS numbers for major resin and reactive diluent components and confirm whether the product is supplied as a mixture
Key QC items to request: viscosity, gel time test method, non-volatile content, acid value, color/Gardner or APHA, thixotropic index, monomer content, inhibitor level, density, shelf-life, storage temperature range, and batch COA limits
Impurity and formulation points to clarify: residual monomer level, styrene or alternative reactive diluent content, water content, free acid level, metal/ash content if relevant, color drift, suspended matter, and batch-to-batch tolerance
Who uses this page
Target buyers
FRP product manufacturers
Composite tank and vessel producers
Sanitary ware and bathtub manufacturers
Waterproof board manufacturers
Cooling tower manufacturers
FRP mold and tooling workshops
Composite material distributors
Industrial coating resin importers
Before matching
Documents to check
CAS number, grade, assay, and impurity profile
SDS, COA, TDS, HS code, and transport classification
Destination-market import documents before supplier matching
Package and route
Packing notes
Listed MOQ: 220 kg
Listed transport package: 220 kg/drum; source page also references wooden box packaging and gross weight around 238 kg
Confirm actual export packing: steel drum, plastic-lined drum, IBC, or palletized drums
Request pallet dimensions, net weight, gross weight, drum count per pallet/container, and container loading plan
Confirm whether UN-approved packaging is required based on final SDS and DG classification
Ask supplier to confirm shelf-life remaining at dispatch and batch/date coding on each drum
Request photos of export packaging, labels, marks, and tamper-evident sealing before shipment
Applications and sourcing options
Check whether this product fits the buyer's actual application.
Clear application, grade, package, and document notes help separate real sourcing demand from a vague price check.
Use context
Common applications
FRP protective gel coat layer where buyers require weather, water, abrasion, or corrosion resistance
Gel coat matrix resin selection for composite surface finishing
Sanitary ware, bathtub, and bathroom composite applications requiring hot water resistance checks
FRP tank, cooling tower, and waterproof board production where resin grade selection must be confirmed by TDS and trial testing
General FRP mold gel coat and surface coating use cases requiring viscosity, gel time, and thixotropy matching
PVC bonding applications where adhesion performance and compatibility must be validated by buyer testing
How we compare
Sourcing options
Request RC-283 if priority is acid resistance, hot water resistance, and adhesion to PVC, subject to specification confirmation
Request RC-23W-1 for waterproof board, heat-resistant bathtub, or general FRP mold gel coat evaluation
Request RC-H-2096W or RC-H-2096S where high elongation and weather resistance are priority checks
Request RC-1240 where seasonal gel time windows and rigid PVC adhesion are relevant, subject to final grade confirmation
Request TR-series grades for o-phthalate-based, high-viscosity, thixotropic, colored gel coat, artificial stone, or general FRP surface coating evaluations
Ask for a sample and matched COA before bulk shipment if application performance, color, viscosity, or gel time is critical
Human review
Compliance notes
CAS number is not provided in the listing; request SDS with full mixture component disclosure to the extent commercially and legally available
Confirm whether formulation contains styrene, methyl methacrylate, peroxide-sensitive components, inhibitors, or other regulated reactive monomers
Confirm final dangerous goods status using current SDS: UN number, proper shipping name, hazard class, packing group, marine pollutant status, flash point, and transport mode restrictions
Request export-ready documents: commercial invoice, packing list, COA, SDS in English, TDS, certificate of origin if needed, and any destination-specific conformity documents
Verify REACH, UK REACH, TSCA, DSL/NDSL, AICS, K-REACH, IECSC, or other inventory status only through supplier documentation and importer review; do not rely on marketplace text as a regulatory guarantee
Confirm labeling requirements for destination market, including GHS hazard labels and local language needs
Check whether product is subject to import licensing, VOC controls, hazardous chemical registration, or restricted monomer limits in the buyer’s jurisdiction
For marine or air freight, ask for DG declaration, packaging certificate, and carrier acceptance confirmation where applicable
Buyer search paths
Related sourcing terms
These terms support long-tail discovery while keeping the page focused on useful product and China export buying context.
coating resin supplier Chinaunsaturated polyester gel coat resinFRP gel coat resinpolyester composite resinisophthalic gel coat resino-phthalate gel coat resincorrosion resistant resinwater resistant gel coatweather resistant FRP resinPVC bonding polyester resinbathtub gel coat resinwaterproof board resin
Related product options
Build a broader quote package from adjacent options.
Buyers often compare neighboring grades, forms, or route options before sending one consolidated RFQ.
Share target market, quantity, packaging scope, artwork status, delivery destination, and required documents so CHN Chemicals can prepare a cleaner supplier comparison.
Questions to confirm
What is the exact grade recommended for my application: FRP tank, bathtub, waterproof board, sanitary ware, cooling tower, PVC bonding, or mold gel coat?
Can you provide the current TDS, SDS, COA template, and specification range for the selected grade?
What are the CAS numbers and approximate composition ranges for the resin base and reactive diluent components?
Does the product contain styrene or other regulated monomers? If yes, what is the typical and maximum content?
What are the confirmed QC limits for gel time at 25°C, viscosity, non-volatile content, acid value, color, density, and inhibitor content?
Which test method and initiator system are used for the listed gel time values?
What is the recommended grade for hot water resistance, acid resistance, weather resistance, or adhesion to rigid PVC?
What is the shelf life, production date control, and minimum remaining shelf life at shipment?
Checks before quote
CAS number is not provided in the listing; request SDS with full mixture component disclosure to the extent commercially and legally available
Confirm whether formulation contains styrene, methyl methacrylate, peroxide-sensitive components, inhibitors, or other regulated reactive monomers
Confirm final dangerous goods status using current SDS: UN number, proper shipping name, hazard class, packing group, marine pollutant status, flash point, and transport mode restrictions
Request export-ready documents: commercial invoice, packing list, COA, SDS in English, TDS, certificate of origin if needed, and any destination-specific conformity documents
Verify REACH, UK REACH, TSCA, DSL/NDSL, AICS, K-REACH, IECSC, or other inventory status only through supplier documentation and importer review; do not rely on marketplace text as a regulatory guarantee
Confirm labeling requirements for destination market, including GHS hazard labels and local language needs
Check whether product is subject to import licensing, VOC controls, hazardous chemical registration, or restricted monomer limits in the buyer’s jurisdiction
For marine or air freight, ask for DG declaration, packaging certificate, and carrier acceptance confirmation where applicable
Next step
Send the product page with your target quantity and market. A sourcing manager can then confirm sample options, supplier fit, packaging details, and open document gaps.
