Product Category / Flame Retardants

Composite Flame Retardants

ATH mineral fillers, FR-UPR resins, FR vinyl ester, phenolic FRP — four categories with 12 industrial-grade SKUs covering marine FRP, transit interior, SMC / BMC, and chemical-resistant composite FR formulation. EN 13501 / ASTM E84 / IMO MSC test reference data available.

ATH — Mineral Filler Flame Retardants

Aluminum trihydrate (Al(OH)₃) at four particle-size cuts plus a silane-surface-treated grade for premium mechanical retention. The halogen-free workhorse for FRP, gelcoat, and resin-system FR formulation at 50–65% loading.

ATH Aluminum Trihydrate (Standard Grade, d50 8µm)

CAS 21645-51-2

Aluminum trihydrate (ATH), also known as alumina trihydrate or aluminum hydroxide, is the most widely used halogen-free flame retardant and …

ATH Aluminum Trihydrate (Fine Grade, d50 3µm)

CAS 21645-51-2

This fine-grade aluminum trihydrate (ATH) features a median particle size of approximately 3 µm, offering improved mechanical properties and…

ATH Aluminum Trihydrate (Ultrafine, d50 1µm)

CAS 21645-51-2

Ultrafine ATH with a median particle size of approximately 1 µm represents the highest performance tier of aluminum trihydrate fillers. The …

ATH Aluminum Trihydrate (Silane Surface Treated)

CAS 21645-51-2

Silane-treated ATH is a premium flame retardant filler where the particle surfaces have been functionalized with organosilane coupling agent…

UPR — Flame-Retardant Unsaturated Polyester Resins

Pre-formulated FR-UPR resins by mechanism — brominated (HBr-grade), phosphorus-modified, and marine-spec fire-retardant — for SMC, BMC, hand-layup laminates, and pultruded profiles requiring Class 1 fire ratings.

Halogenated Flame Retardant UPR (HET Acid)

CAS 26455-61-8

Halogenated Flame Retardant UPR is formulated with HET acid (chlorendic acid, hexachloroendomethylenetetrahydrophthalic acid) as a reactive …

Phosphorus Flame Retardant UPR (Non-Halogen)

CAS 26455-61-8

Phosphorus Flame Retardant UPR is a halogen-free thermosetting resin that incorporates reactive phosphorus-containing monomers (typically ph…

Fire Retardant UPR for Marine

CAS 26455-61-8

Fire Retardant UPR for Marine combines an isophthalic polyester backbone with reactive halogen-free flame retardant chemistry to deliver bot…

Vinyl Ester — Flame-Retardant Grades

FR-grade vinyl ester resins with brominated chemistry plus low-smoke variants for transit, infrastructure, and chemical-resistant FRP applications where corrosion resistance and fire performance are simultaneously required.

Flame Retardant Vinyl Ester Resin

CAS 3066-71-5

Flame Retardant Vinyl Ester Resin combines the chemical resistance and mechanical properties of standard bisphenol A vinyl ester with reacti…

Low Smoke Flame Retardant Vinyl Ester

CAS 3066-71-5

Low Smoke Flame Retardant Vinyl Ester is a halogen-free BPA vinyl ester resin formulated with a combination of reactive phosphorus FR monome…

Specialty FR Composites & Synergists

Phenolic FRP for transit interior panels (Class 0 fire rating), gelcoat fire retardant for marine and architectural FRP surface, and zinc borate synergist (char-former + smoke suppressant) for blending into ATH/MDH-filled compounds.

Phenolic FRP Fire-Resistant Composite System

CAS 9003-35-4

Phenolic FRP Fire-Resistant Composite System is an optimized phenolic resole resin system designed for manufacturing fire-resistant glass fi…

Fire Retardant Gelcoat (IMO Compliant)

This fire retardant gelcoat is formulated on a halogenated isophthalic resin base with synergistic antimony trioxide to meet the flame sprea…

Zinc Borate (Flame Retardant, Smoke Suppressor)

CAS 138265-88-0

Zinc borate (chemical formula 2ZnO·3B₂O₃·3.5H₂O, CAS 138265-88-0) is an inorganic flame retardant and smoke suppressant that functions syner…

Need TDS, CoA or sample?

Resinspot technical team provides FR composite selection support, CoA / SDS documentation, EN 13501 / ASTM E84 / IMO fire test reference data, and resin sample requests.

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