ARADUR 3275

ARADUR 3275 is a low-viscosity formulated polyether polyamine curing agent developed for compatible epoxy resin systems.

ARADUR 3275 provides high flexibility, impact resistance, low-temperature elongation, and a practical balance between pot life and ambient-temperature curing.

ARADUR 3275 is used primarily in crack-bridging coatings, flexible membranes, solvent-free binder systems, impact-elastic coatings, and flexible adhesives.

CAS Number: Not assigned as a single number to the complete formulated mixture

EC Number: Not assigned as a single number to the complete formulated mixture

Molecular Formula: Not applicable to a formulated polyether polyamine mixture

Molecular Weight: Not applicable to a formulated polyether polyamine mixture

SYNONYMS

ARADUR 3275, ARADUR-3275, ARADUR3275, 3275 Epoxy Hardener, 3275 Epoxy Curing Agent, 3275 Polyamine Hardener, Formulated Polyether Polyamine, Polyether Polyamine Epoxy Hardener, Polyether Polyamine Curing Agent, Flexible Epoxy Hardener, Flexible Epoxy Curing Agent, Low-Viscosity Epoxy Hardener, Low-Viscosity Polyamine Hardener, Liquid Epoxy Hardener, Liquid Polyamine Curing Agent, Two-Component Epoxy Hardener, 2K Epoxy Curing Agent, Ambient-Cure Epoxy Hardener, Room-Temperature Epoxy Hardener, Solvent-Free Epoxy Hardener, Solventless Epoxy Curing Agent, VOC-Free Epoxy Hardener, Benzyl-Alcohol-Free Epoxy Hardener, Nonylphenol-Free Epoxy Hardener, Crack-Bridging Epoxy Hardener, Crack-Covering Membrane Hardener, Flexible Membrane Curing Agent, Liquid Membrane Epoxy Hardener, Liquid Foil Curing Agent, Flexible Flooring Hardener, Impact-Elastic Coating Hardener, Impact-Resistant Epoxy Hardener, Low-Temperature Flexible Epoxy Hardener, High-Elongation Epoxy Hardener, Flexible Adhesive Curing Agent, 2K Adhesive Hardener, Film Adhesive Curing Agent, Concrete Coating Hardener, Metal Coating Hardener, Steel Coating Hardener, Flexible Binder Curing Agent, Epoxy Flexibilizing Hardener, Epoxy Flexibility Modifier, Reactive Epoxy Flexibilizer, Polyamine Epoxy Crosslinker, Amine-Functional Epoxy Hardener, Epoxy Polymerizing Agent, Flexible Thermoset Hardener, Crack-Resistant Coating Hardener, Elastic Epoxy Binder

APPLICATIONS

ARADUR 3275 serves as a curing agent in flexible epoxy flooring systems applied to properly prepared concrete substrates.
ARADUR 3275 helps the cured flooring accommodate limited substrate movement without developing the brittle behavior associated with rigid epoxy systems.

ARADUR 3275 supports crack-bridging floor coatings designed to span existing nonstructural cracks and minor substrate movement.
ARADUR 3275 provides high elongation while the complete coating thickness, reinforcement, and substrate preparation determine crack-bridging capacity.

ARADUR 3275 functions in flexible membrane systems intended to form continuous protective layers over mineral substrates.
ARADUR 3275 helps the cured membrane retain flexibility during temperature changes and mechanical movement.

ARADUR 3275 contributes to liquid-applied sealing membranes developed for compatible construction surfaces.
ARADUR 3275 allows the mixed epoxy system to be applied as a continuous layer before curing into a flexible film.

ARADUR 3275 supports impact-elastic coatings requiring greater deformation capacity than conventional rigid epoxy coatings.
ARADUR 3275 helps dissipate mechanical energy and reduce brittle cracking under appropriate impact conditions.

ARADUR 3275 functions in flexible adhesive systems used to bond compatible construction and industrial materials.
ARADUR 3275 permits the cured adhesive layer to tolerate limited differential movement between bonded components.

ARADUR 3275 contributes to two-component epoxy adhesives requiring a combination of flexibility and mechanical strength.
ARADUR 3275 reacts with compatible epoxy resins to create a crosslinked adhesive network at ambient temperature.

ARADUR 3275 supports film adhesive formulations developed for flexible or movement-sensitive bonded assemblies.
ARADUR 3275 helps prevent excessive brittleness when thin adhesive layers are exposed to bending or impact.

ARADUR 3275 serves as a reactive flexibilizing hardener in epoxy systems that would otherwise cure into highly rigid materials.
ARADUR 3275 increases elongation by introducing flexible polyether-containing structures into the cured network.

ARADUR 3275 supports modification of brittle epoxy binders used in coatings, adhesives, and membrane systems.
ARADUR 3275 can be blended with technically compatible curing agents to adjust flexibility, cure rate, hardness, and working time.

ARADUR 3275 contributes to flexible coatings intended to retain useful elongation at temperatures below ordinary room temperature.
ARADUR 3275 provides substantial flexibility down to approximately −10°C in the documented reference system.

ARADUR 3275 functions in concrete-surface coatings exposed to vibration, minor movement, or repeated mechanical loading.
ARADUR 3275 helps reduce stress concentration within the cured epoxy layer when the complete system is properly designed.

ARADUR 3275 supports coatings applied to prepared steel surfaces where impact resistance and flexibility are required.
ARADUR 3275 must be combined with suitable resins, pigments, fillers, primers, and corrosion-control components for metal protection.

ARADUR 3275 contributes to flexible coating systems applied to properly prepared metal components.
ARADUR 3275 allows the cured film to tolerate limited deformation without immediate cohesive cracking.

ARADUR 3275 functions in solvent-free epoxy binder systems developed to minimize volatile organic solvent content.
ARADUR 3275 enables liquid application through its relatively low viscosity without requiring benzyl alcohol as a formulation diluent.

ARADUR 3275 supports VOC-free formulations when every resin, additive, pigment, filler, and processing component meets the intended VOC criteria.
ARADUR 3275 does not independently establish a VOC-free claim for the complete finished formulation.

ARADUR 3275 contributes to benzyl-alcohol-free epoxy coatings and adhesive systems.
ARADUR 3275 helps formulators avoid the odor, migration, and plasticization characteristics associated with benzyl-alcohol-containing hardeners.

ARADUR 3275 functions in nonylphenol-free binder systems developed for construction and industrial applications.
ARADUR 3275 allows nonylphenol-free formulation targets to be pursued when all other ingredients are also appropriately selected.

ARADUR 3275 supports high-elongation flooring systems designed for areas subject to limited vibration or substrate movement.
ARADUR 3275 enables a more compliant cured binder while fillers and reinforcement materials control strength and dimensional stability.

ARADUR 3275 contributes to industrial floor overlays requiring a balance between flexibility, impact resistance, and mechanical performance.
ARADUR 3275 suitability must be confirmed against traffic, temperature, chemicals, moisture, and substrate conditions.

ARADUR 3275 functions in membrane coatings applied beneath compatible protective or decorative finish layers.
ARADUR 3275 requires adhesion and intercoat-compatibility testing with primers, topcoats, tiles, adhesives, and finishing materials.

ARADUR 3275 supports impact-resistant repair layers prepared with compatible epoxy resin and selected mineral fillers.
ARADUR 3275 helps the repaired area tolerate mechanical shocks when substrate preparation and filler loading are properly controlled.

ARADUR 3275 contributes to flexible composite matrices containing fibers, fabrics, fillers, or reinforcing meshes.
ARADUR 3275 allows reinforcement to be combined with a more deformable epoxy matrix for crack-control research and specialty applications.

ARADUR 3275 functions in filled epoxy formulations containing silica, calcium carbonate, pigments, or functional mineral powders.
ARADUR 3275 requires sufficient mixing to wet the fillers uniformly without introducing excessive air.

ARADUR 3275 supports formulation development involving different epoxy resins, reactive diluents, fillers, and curing-agent blends.
ARADUR 3275 performance should be validated through gel time, tensile testing, elongation, tear resistance, adhesion, and service-condition testing.

DESCRIPTION

ARADUR 3275 is a formulated polyether polyamine mixture used as a reactive epoxy curing agent.
ARADUR 3275 belongs to the amine chemical family and functions as a hardener, accelerator, curing agent, and polymerizing component.

ARADUR 3275 is not a single chemically pure substance with one defined molecular structure.
ARADUR 3275 therefore has no single complete-mixture CAS number, EC number, molecular formula, or molecular weight.

ARADUR 3275 is supplied as a clear liquid with an amber color and a characteristic amine-like odor.
ARADUR 3275 liquid form supports metering, pumping, mixing, filler incorporation, and application in two-component systems.

ARADUR 3275 has a documented viscosity range of approximately 200–300 mPa·s at 25°C.
ARADUR 3275 viscosity can vary with temperature, test method, storage history, and the composition of the tested formulation.

ARADUR 3275 has a documented amine value of approximately 100–170 mg KOH/g.
ARADUR 3275 amine value provides a quality-control indicator but does not independently determine the required epoxy mixing ratio.

ARADUR 3275 has a reported density of approximately 1.0 g/cm³ at 20°C.
ARADUR 3275 has a documented minimum flash point of approximately 93°C.

ARADUR 3275 contains reactive amine hydrogen groups that open epoxy rings during curing.
ARADUR 3275 gradually converts a liquid epoxy-hardener mixture into a crosslinked and insoluble thermoset material.

ARADUR 3275 provides an elongation level of approximately 110% at room temperature in the documented reference system.
ARADUR 3275 can retain elongation of up to approximately 50% at −10°C in the same general performance context.

ARADUR 3275 produces a cured system with a glass-transition temperature of approximately −10°C or lower in the documented reference formulation.
ARADUR 3275 low glass-transition behavior contributes to flexibility and reduced brittleness at lower service temperatures.

ARADUR 3275 provides a representative gel time of approximately 183 minutes at 23°C under the specified test conditions.
ARADUR 3275 gel time changes with batch mass, epoxy resin, starting temperature, filler loading, and added accelerators.

ARADUR 3275 has a documented reference mixing ratio of approximately 129 parts ARADUR 3275 to 100 parts of the specified epoxy resin blend by weight.
ARADUR 3275 mixing ratio must be recalculated whenever the epoxy equivalent weight or resin composition changes.

ARADUR 3275 reference cured properties include approximately 100% elongation, 1,780 psi tensile strength, and 202 lb/in tear strength after seven days of curing.
ARADUR 3275 mechanical values are formulation-specific reference results rather than universal values for every epoxy system.

ARADUR 3275 has a documented shelf life of approximately two years when stored at room temperature in sealed original packaging.
ARADUR 3275 should be protected from moisture, excessive heat, direct sunlight, contamination, acids, and oxidizing substances.

PROPERTIES

Chemical Class: Formulated Polyether Polyamine

Primary Function: Epoxy Curing Agent and Hardener

Physical Form: Liquid

Appearance: Clear Amber Liquid

Odor: Amine-Like

Viscosity at 25°C: Approximately 200–300 mPa·s

Amine Value: Approximately 100–170 mg KOH/g

Density at 20°C: Approximately 1.0 g/cm³

Flash Point: Minimum Approximately 93°C

Representative Gel Time: Approximately 183 Minutes at 23°C

Representative Elongation: Approximately 110% at Room Temperature

Low-Temperature Elongation: Up to Approximately 50% at −10°C

Main Uses: Flexible Coatings, Crack-Bridging Membranes, Flexible Flooring, and Adhesives

Storage: Room Temperature in Tightly Sealed Containers

Shelf Life: Approximately Two Years under Recommended Storage Conditions

FIRST AID

Inhalation

Move the person exposed to ARADUR 3275 vapor, mist, aerosol, or heated fumes into fresh air.
Obtain immediate medical attention if ARADUR 3275 exposure causes coughing, dizziness, respiratory irritation, wheezing, or breathing difficulty.

Skin Contact

Remove clothing contaminated with ARADUR 3275 and immediately wash the affected skin thoroughly with mild soap and water.
Obtain medical attention if ARADUR 3275 causes persistent irritation, pain, redness, blistering, dermatitis, or an allergic skin response.

Eye Contact

Immediately rinse eyes exposed to ARADUR 3275 with clean running water for at least 15 minutes while holding the eyelids open.
Remove contact lenses when easy to do, continue rinsing, and obtain urgent medical attention because ARADUR 3275 is corrosive to the eyes.

Ingestion

Rinse the mouth after accidental ingestion of ARADUR 3275 and do not induce vomiting.
Obtain immediate medical attention and provide the current safety documentation for ARADUR 3275.

Note to Physicians

Treat ARADUR 3275 exposure symptomatically and provide appropriate supportive care.
Assess ARADUR 3275 exposure according to quantity, route, symptoms, accompanying epoxy components, and the current regional Safety Data Sheet.

HANDLING AND STORAGE

Handling

Handle ARADUR 3275 according to good industrial hygiene and professional reactive-chemical processing practices.
Avoid ARADUR 3275 contact with the eyes, skin, clothing, food, drink, acids, oxidizing agents, and incompatible reactive materials.

Ventilation

Provide effective general ventilation and local exhaust wherever ARADUR 3275 is poured, transferred, mixed, heated, sprayed, or applied.
Use suitable respiratory protection when engineering controls cannot adequately control ARADUR 3275 vapor, mist, aerosol, or fumes.

Storage

Store ARADUR 3275 in tightly closed and chemically compatible containers within a dry and temperature-controlled area.
Protect ARADUR 3275 from moisture, direct sunlight, excessive heat, acids, oxidizing agents, contamination, and unintended contact with epoxy resin.

Spill and Leak Procedures

Contain spilled ARADUR 3275 with a suitable inert and non-combustible absorbent while maintaining adequate ventilation.
Prevent ARADUR 3275 from entering drains, soil, or surface water and transfer recovered waste into properly labeled disposal containers.

Handling Precautions

Wear chemical-resistant gloves, protective clothing, and tightly fitting eye and face protection while handling ARADUR 3275.
Review the current regional Safety Data Sheet before storing, mixing, transporting, processing, or disposing of ARADUR 3275.