ARADUR 3275

ARADUR 3275 is a low-viscosity, formulated polyether polyamine hardener designed for curing compatible liquid epoxy resins.
ARADUR 3275 provides a high degree of flexibility, excellent elongation, impact resistance, and reliable adhesion to concrete and steel substrates.
ARADUR 3275 is widely used in flexible flooring systems, crack-bridging membranes, impact-elastic coatings, liquid waterproofing foils, and flexible epoxy adhesives.

CAS Number: Not assigned as a single CAS number; proprietary formulated mixture
EC Number: Not assigned as a single EC number; proprietary 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, Aradur 3275 Epoxy Hardener, Aradur 3275 Curing Agent, Aradur 3275 Polyether Polyamine, Formulated Polyether Polyamine Hardener, Flexible Epoxy Hardener, Low-Viscosity Epoxy Curing Agent, Elastomeric Epoxy Hardener, Crack-Bridging Epoxy Hardener, Membrane Epoxy Curing Agent, Impact-Elastic Coating Hardener, Flexible Flooring Hardener, Liquid Foil Hardener, Waterproofing Membrane Curing Agent, Flexible Adhesive Hardener, Viscoplastic Epoxy Binder Hardener, Solvent-Free Epoxy Hardener, VOC-Free Epoxy Curing Agent, Benzyl-Alcohol-Free Epoxy Hardener, Nonylphenol-Free Epoxy Hardener, SVHC-Free Epoxy Hardener, Amine-Based Epoxy Crosslinker, Two-Component Epoxy Hardener, Industrial Polyamine Curing Agent, Flexible Coating Curing Agent, Concrete Adhesive Hardener, Steel Coating Hardener, Huntsman ARADUR 3275, ARADUR 3275 Polymerizing Agent

APPLICATIONS

ARADUR 3275 is used as a curing agent in flexible epoxy flooring systems.
ARADUR 3275 is used in resilient floor coatings that must accommodate limited substrate movement.
ARADUR 3275 is used in industrial floors requiring a combination of flexibility and mechanical durability.
ARADUR 3275 is used in seamless flooring systems applied over properly prepared concrete.

ARADUR 3275 is used in crack-bridging membranes for concrete surfaces.
ARADUR 3275 is used in coating systems designed to cover static cracks and minor surface discontinuities.
ARADUR 3275 is used in flexible intermediate layers beneath protective flooring systems.
ARADUR 3275 is used in membrane formulations intended to reduce crack transmission through finished surfaces.

ARADUR 3275 is used in liquid-applied foils for sealing and waterproofing purposes.
ARADUR 3275 is used in flexible waterproofing membranes for building and construction applications.
ARADUR 3275 is used in protective liquid membranes applied to mineral substrates.
ARADUR 3275 is used in seamless sealing layers where flexibility and adhesion are required.

ARADUR 3275 is used in impact-elastic epoxy coatings.
ARADUR 3275 is used in protective coatings exposed to vibration, impact, and mechanical movement.
ARADUR 3275 is used in coating systems requiring resistance to cracking under service stress.
ARADUR 3275 is used in flexible protective films for industrial surfaces and components.

ARADUR 3275 is used to improve the elongation of otherwise brittle epoxy systems.
ARADUR 3275 is used to increase flexibility in rigid bisphenol A and bisphenol F epoxy formulations.
ARADUR 3275 is used as a flexibilizing curing agent in modified epoxy resin systems.
ARADUR 3275 is used to reduce brittleness in coatings, adhesives, and membrane compounds.

ARADUR 3275 is used in flexible two-component epoxy adhesive systems.
ARADUR 3275 is used in adhesives that must tolerate vibration and differential movement.
ARADUR 3275 is used in bonding systems for concrete, metal, and sand-blasted steel.
ARADUR 3275 is used in structural and semi-structural adhesives requiring improved toughness.

ARADUR 3275 is used in film adhesives requiring a flexible cured bond line.
ARADUR 3275 is used in adhesive layers exposed to repeated thermal or mechanical movement.
ARADUR 3275 is used in laminating adhesives where resistance to cracking is important.
ARADUR 3275 is used in industrial bonding formulations requiring high elongation at break.

ARADUR 3275 is used in solvent-free epoxy binder systems.
ARADUR 3275 is used in formulations designed without benzyl alcohol.
ARADUR 3275 is used in nonylphenol-free epoxy curing systems.
ARADUR 3275 is used in VOC-free binders for enclosed or environmentally controlled applications.

ARADUR 3275 is used in viscoplastic epoxy binder systems.
ARADUR 3275 is used in resin systems requiring controlled deformation without brittle failure.
ARADUR 3275 is used in flexible compounds designed to retain performance at reduced temperatures.
ARADUR 3275 is used in formulations requiring useful elongation at temperatures down to approximately −10°C.

ARADUR 3275 is used in coatings applied to dry concrete surfaces.
ARADUR 3275 is used in protective systems requiring strong adhesion to sand-blasted steel.
ARADUR 3275 is used in flexible primers and intermediate coats for mineral substrates.
ARADUR 3275 is used in protective coating systems for properly prepared metal substrates.

ARADUR 3275 is used in epoxy repair systems requiring improved impact resistance.
ARADUR 3275 is used in flexible joint-adjacent repair compounds.
ARADUR 3275 is used in resin-rich patching systems exposed to vibration or minor substrate movement.
ARADUR 3275 is used in maintenance compounds where conventional rigid epoxy systems may be too brittle.

ARADUR 3275 is used in floor layers installed over vibration-prone industrial substrates.
ARADUR 3275 is used in coating systems for ramps, service areas, and mechanically stressed surfaces.
ARADUR 3275 is used in flexible linings subjected to intermittent impact and deformation.
ARADUR 3275 is used in protective films requiring balanced tensile strength and elongation.

ARADUR 3275 is used with suitable ARALDITE epoxy resins such as GY 6010, PY 313, and GY 9513.
ARADUR 3275 is used with compatible liquid epoxy resins to produce highly flexible thermoset networks.

DESCRIPTION

ARADUR 3275 is a formulated polyether polyamine curing agent belonging to the amine chemical family.
ARADUR 3275 is supplied as a clear to amber liquid with a characteristic amine-like odor.
ARADUR 3275 functions as an epoxy hardener, curing agent, accelerator, and polymerizing agent.
ARADUR 3275 reacts with epoxy groups to form a flexible, permanently crosslinked thermoset structure.

ARADUR 3275 has a low viscosity that facilitates pumping, metering, mixing, and application.
ARADUR 3275 promotes effective wetting of concrete, metal, steel, pigments, fillers, and aggregates.
ARADUR 3275 is substantially lower in viscosity than conventional ARADUR 75 and ARADUR 76 hardeners.
ARADUR 3275 supports the preparation of solvent-free and highly filled epoxy formulations.

ARADUR 3275 produces cured epoxy systems with a high degree of flexibility.
ARADUR 3275 can provide elongation values of approximately 100–110% at room temperature in suitable resin systems.
ARADUR 3275 can retain elongation of up to approximately 50% at temperatures around −10°C.
ARADUR 3275 is therefore suitable for systems exposed to movement, vibration, impact, or thermal contraction.

ARADUR 3275 provides good adhesion to dry concrete and properly sand-blasted steel.
ARADUR 3275 contributes to impact resistance and resistance to brittle cracking.
ARADUR 3275 produces cured systems with useful tensile and tear strength.
ARADUR 3275 provides a practical compromise between room-temperature pot life and curing speed.

ARADUR 3275 has an amine value typically within the range of 100–170 mg KOH/g.
ARADUR 3275 has a typical viscosity of approximately 200–300 mPa·s at 25°C.
ARADUR 3275 has a density of approximately 1.0 g/cm³ at 20°C.
ARADUR 3275 has a minimum flash point of approximately 93°C.

ARADUR 3275 may provide a gel time of approximately 183 minutes at 23°C under the supplier’s specified test conditions.
ARADUR 3275 produces a cured system with a glass transition temperature of approximately −10°C when tested with ARALDITE GY 250.
ARADUR 3275 can provide tensile strength of approximately 1,780 psi after the specified cure schedule.
ARADUR 3275 can provide tear strength of approximately 202 lb/in after the specified cure schedule.

ARADUR 3275 is a proprietary formulated mixture rather than a single pure chemical compound.

PROPERTIES

Product Name: ARADUR 3275
Brand Name: ARADUR® 3275
Manufacturer: Huntsman
Product Type: Formulated polyether polyamine hardener
Chemical Family: Amines
Primary Functions: Accelerator, curing agent, hardener, and polymerizing agent
Chemical Form: Proprietary formulated mixture
Physical Form: Liquid
Appearance: Clear liquid without visible contamination
Color: Amber
Odor: Amine-like
CAS Number: No single CAS number assigned to the formulated product
EC Number: No single EC number assigned to the formulated product
Molecular Formula: Not applicable
Molecular Weight: Not applicable
Amine Value: 100–170 mg KOH/g
Typical Viscosity at 25°C: 200–300 mPa·s
Additional Listed Viscosity at 23°C: Approximately 1,070 cPs by specified ASTM or cone-and-plate methods
Density at 20°C: Approximately 1.0 g/cm³
Flash Point: Minimum 93°C
Gel Time: Approximately 183 minutes
Gel Time Conditions: Tecam Gelation Timer at 23°C using a 100 g test quantity
Glass Transition Temperature: Maximum approximately −10°C when cured with ARALDITE GY 250
Room-Temperature Elongation: Approximately 100–110%, depending on the resin system and test method
Low-Temperature Elongation: Up to approximately 50% at −10°C
Tensile Strength: Approximately 1,780 psi after seven days at 24–26°C
Tear Strength: Approximately 202 lb/in after seven days at 24–26°C
Material Compatibility: Concrete surfaces, metal substrates, and steel substrates
Compatible Resin Examples: ARALDITE GY 6010, ARALDITE PY 313, and ARALDITE GY 9513
Mix Ratio: Resin-system dependent; an official product listing reports approximately 129 g per 100 g for the referenced epoxy system
Primary Applications: Flexible flooring, flexible coatings, crack-covering membranes, liquid foils, and flexible adhesives
Formulation Features: Solvent-free, benzyl-alcohol-free, nonylphenol-free, VOC-free, and SVHC-free systems
Performance Features: High flexibility, impact resistance, chemical resistance, temperature resistance, and good mechanical properties
Packaging: Approximately 418 lb steel drum in listed regional supply
Shelf Life: Two years when stored at room temperature in the original sealed container

FIRST AID

Inhalation:
Remove the exposed person to fresh air immediately.
Keep the person at rest in a position comfortable for breathing.
Give oxygen by trained personnel if breathing is difficult.
Seek immediate medical attention following significant inhalation exposure.
Obtain urgent medical assistance if coughing, dizziness, breathing difficulty, or respiratory irritation persists.

Skin Contact:
Immediately remove contaminated clothing, shoes, watches, and personal items.
Wash the affected skin thoroughly with mild soap and plenty of water.
Continue washing until all visible product residue has been removed.
Do not use solvents to clean contaminated skin.
Obtain medical attention because the product may cause corrosive injury, dermatitis, or sensitization.
Wash contaminated clothing thoroughly before reuse and discard items that cannot be effectively decontaminated.

Eye Contact:
Immediately flush the eyes with clean water for at least 15 minutes.
Hold the eyelids open and rinse all eye surfaces thoroughly.
Remove contact lenses if present and easy to do without delaying irrigation.
Continue rinsing while arranging emergency medical treatment.
Obtain immediate examination by an ophthalmologist or emergency physician.
Do not apply neutralizing chemicals, ointments, or medication unless directed by medical personnel.

Ingestion:
Rinse the mouth carefully with water.
Do not induce vomiting.
If the affected person is conscious, give water only when instructed by medical personnel or a poison center.
Never give anything by mouth to an unconscious or convulsing person.
Obtain immediate medical attention.
Provide the product label and current regional safety data sheet to attending medical personnel.

Note to Physicians:
Treat symptomatically and provide supportive care.
No product-specific antidote is known.
Consider the possibility of corrosive injury and systemic exposure to reactive amine components.
Monitor the patient for delayed respiratory, dermal, ocular, and gastrointestinal effects.
Consult a poison information center for additional treatment guidance.
Use the current regional ARADUR 3275 safety data sheet as the controlling source for medical information.

HANDLING AND STORAGE

Handling:
Use ARADUR 3275 only in professional or industrial environments with suitable chemical controls.
Read the current technical data sheet and regional safety data sheet before handling.
Wear chemical-resistant gloves, protective clothing, safety goggles, and appropriate face protection.
Avoid all contact with the skin, eyes, and clothing.
Avoid breathing vapor, mist, spray, aerosol, or fumes.
Keep containers tightly closed when the product is not being transferred or used.
Use clean, dry, and chemically compatible transfer and mixing equipment.
Prevent contamination with acids, oxidizing agents, moisture, and incompatible chemicals.
Do not eat, drink, or smoke in product handling areas.
Wash hands and exposed skin thoroughly after handling and before breaks.

Ventilation:
Provide effective general mechanical ventilation in processing and storage areas.
Use local exhaust ventilation at points where vapor, mist, aerosol, or heated fumes may be generated.
Maintain airborne concentrations below all applicable occupational exposure limits.
Use approved respiratory protection when ventilation cannot adequately control exposure.
Ensure respiratory protective equipment is correctly selected, fitted, inspected, and maintained.
Do not enter confined spaces without atmospheric testing and an approved entry procedure.

Storage:
Store ARADUR 3275 at room temperature in its tightly sealed original container.
Keep the product in a cool, dry, and well-ventilated storage area.
Protect containers from direct sunlight, excessive heat, moisture, and physical damage.
Store away from acids, oxidizing agents, food, beverages, and animal feed.
Keep containers upright, properly labeled, and securely closed.
Use suitable secondary containment in storage and dispensing areas.
Do not transfer the product into unidentified or incompatible containers.
Observe the expiry date stated on the original packaging.
Rotate inventory according to the first-in, first-out principle.
Under recommended conditions, ARADUR 3275 has a shelf life of approximately two years.

Spill and Leak Procedures:
Restrict access to the affected area and keep unprotected personnel away.
Provide adequate ventilation and wear suitable personal protective equipment.
Stop the leak if this can be performed without personal risk.
Prevent the product from entering drains, sewers, soil, surface water, or groundwater.
Contain the liquid with sand, earth, or another inert non-combustible absorbent.
Collect absorbed material in a compatible, tightly closed, and properly labeled waste container.
Do not return recovered spilled material to the original container.
Clean the contaminated surface using an approved industrial cleaning procedure.
Dispose of the product and contaminated absorbents through an authorized waste contractor.
Notify the relevant authorities if a significant release reaches drains, soil, or waterways.

Handling Precautions:
Verify the recommended resin-to-hardener ratio for the selected epoxy resin before use.
Mix ARADUR 3275 thoroughly with the resin until the formulation is completely uniform.
Scrape the sides and bottom of the mixing container to prevent unmixed material.
Avoid preparing unnecessarily large batches because the epoxy curing reaction may generate substantial heat.
Do not seal containers containing freshly mixed resin and hardener.
Use the mixed formulation within its validated working time.
Consider the effect of ambient temperature, substrate temperature, and mixed mass on the curing rate.
Apply the formulation only to clean, dry, and properly prepared substrates.
Keep emergency eyewash stations and safety showers readily accessible.
Follow the current Huntsman technical data sheet and regional safety data sheet for formulation, transport, storage, exposure control, first aid, and emergency response.