Additives

3-Aminopropyltriethoxysilane (A-1100 / KH-550)

CAS 919-30-2

Primary amine group reacts directly with epoxy resins — ideal epoxy composite coupling agent

3-Aminopropyltrimethoxysilane (KH-540 / APTMS)

CAS 13822-56-5

Trimethoxy groups hydrolyze 3–5× faster than triethoxysilane KH-550 — ideal for waterborne systems

3-Chloropropyltrimethoxysilane

CAS 2530-87-2

Versatile synthetic intermediate — chloro group converts to amine, thiol, azide, or epoxide

3-Glycidoxypropyltrimethoxysilane (A-187 / KH-560)

CAS 2530-83-8

Glycidyl functional group is directly compatible with all epoxy curing chemistry

Hydrogenated Castor Oil Thixotrope (HCO)

CAS 8001-78-3

Natural-origin, bio-based thixotrope — from renewable castor oil feedstock

Organoclay Rheology Modifier (Bentone Type)

CAS 71011-27-3

Organophilic smectite clay — compatible with non-polar and solvent-borne resin systems

Polyethylene Low Shrink Additive (LPA-PE)

CAS 9002-88-4

Void-free shrinkage compensation via PE crystallization expansion — not microvoid formation

Polymeric Thickener for UPR Systems

Transparent viscosity building — no haze in clear UPR casting and coating systems

Air Release Additive for Epoxy Resin Systems

Formulated for epoxy compatibility — no PDMS, no pot life extension, no cloud point

Defoamer for Waterborne Systems

Silicone-free — no surface contamination

Silicone Defoamer for UPR / VER Systems

Rapid bubble collapse and air release in UPR/VER at 100–1000 ppm dosage

Silicone-Free Defoamer for UPR / Gelcoat Systems

Zero silicone — eliminates fisheye, cratering, and paint adhesion failure risk

HALS UV Stabilizer (Tinuvin 770 Type, Bis-TEMPO Sebacate)

CAS 52829-07-9

HALS mechanism: catalytic radical scavenging — regenerated, not consumed like UV absorbers

Polymeric HALS UV Stabilizer (High MW, Low Volatility)

CAS 65447-77-0

Very low migration and volatility — remains active in composite matrix throughout service life

UV Absorber Benzophenone Type (BP-4 / BP-12)

CAS 131-57-7

Most economical UV absorber for composite gelcoat and laminating resin applications

UV Absorber Benzotriazole Type (Tinuvin 328 Type)

CAS 25973-55-1

Benzotriazole UV absorber — strong 300–380 nm absorption for polyester gelcoat protection

ATBN Amine-Terminated Rubber Toughener for Epoxy

CAS 68891-97-4

Terminal amine groups react directly with epoxy in amine-cured systems — no catalyst needed

CTBN Liquid Rubber Toughener for Epoxy

CAS 68891-97-4

Reactive liquid rubber — carboxyl groups bond covalently to epoxy matrix during cure

Core-Shell Rubber Toughener (CSR Powder for Epoxy)

Pre-formed particles — toughening independent of cure temperature and chemistry

Nano Rubber Toughener Dispersion for Epoxy

Nano scale (50–200 nm) — effective in highly crosslinked epoxy where CSR/CTBN cannot toughen

Ammonium Polyphosphate Phase II (APP II, Microencapsulated)

CAS 68333-79-9

High MW Phase II: much lower water solubility than Phase I — suitable for outdoor use

DOPO Reactive Phosphorus Flame Retardant for Epoxy

CAS 35948-25-5

Reactive FR — bonds covalently into epoxy network, no migration or leaching

Expandable Graphite Flame Retardant (Intumescent Graphite)

CAS 7782-42-5

Rapid intumescent expansion (300–500x volume) creates insulating char barrier on fire

Red Phosphorus Masterbatch (Microencapsulated, Halogen-Free FR)

CAS 7723-14-0

Highest P-content FR (100% P) — UL 94 V-0 at lowest loading of any additive FR

Dispersing Agent for Mineral Fillers in Thermoset Resins

Reduces viscosity of high-filler-loading thermoset compounds by 50–80%

Paraffin Wax Solution (Styrene Suppressant / Air Inhibition Barrier)

CAS 8002-74-2

Eliminates surface tack in open-mold UPR curing — allows tack-free, sandable surface

Styrene Suppressant Additive Blend

50–80% styrene emission reduction vs. standard UPR — OSHA compliance support

Wetting and Penetrating Agent for Glass Fiber Composites

Reduces resin surface tension — lowers contact angle with glass fiber for faster wet-out

Black Color Paste — Carbon Black in UPR/Epoxy (Universal)

CAS 1333-86-4

Pre-dispersed carbon black — consistent jetness and color strength without milling

Red Color Paste — Iron Oxide / Organic Red (Universal UPR/Epoxy)

CAS 1309-37-1

Iron oxide red: outstanding outdoor durability, heat stability to 300°C, no migration

White Color Paste — TiO₂ in UPR/Epoxy (Universal)

CAS 13463-67-7

Pre-dispersed paste — no grinding needed, consistent color development

Yellow Color Paste — Iron Oxide / Organic Yellow (Universal UPR/Epoxy)

CAS 51274-00-1

Iron oxide yellow: outdoor durability, heat stable to 177°C, non-toxic for industrial use