ARADUR 33641

Aradur 33641 is primarily used as a fast-curing hardener and accelerator in two-component epoxy coating systems formulated for corrosion protection and chemical resistance.
Aradur 33641 is widely employed in chemical-resistant coatings, solvent-free coatings, high-solids coatings, pipe coatings, tank linings, industrial maintenance coatings, and protective coatings exposed to aggressive industrial environments.

CAS Number: Mixture (no single CAS number assigned)
EC Number: Mixture (no single EC number assigned)
Molecular Formula: Not applicable (proprietary formulated mixture/UVCB)
Molecular Weight: Not applicable (mixture)

SYNONYMS:
ARADUR® 33641, Aradur 33641, Formulated Fast-Cure Polyamine Hardener, Polyamine Epoxy Hardener, Epoxy Curing Agent, Epoxy Hardener, Fast-Curing Amine Hardener, Polyamine Crosslinking Agent, Epoxy Accelerator

Aradur 33641 is a formulated fast-curing polyamine-based epoxy curing agent (hardener) and accelerator for high-performance two-component epoxy systems.
Aradur 33641 is a benzyl alcohol-free (BzOH-free), low-VOC, and SVHC-free hardener designed for ambient-temperature curing of solvent-free and high-solids epoxy formulations.
Aradur 33641 combines fast curing, low viscosity, excellent chemical resistance, corrosion resistance, and outstanding surface appearance, making it suitable for demanding industrial coatings and structural adhesive applications.

Aradur 33641 is a formulated, fast-curing hardener for ambient temperature cure, corrosion-resistant, and chemical-resistant coatings.
Aradur 33641 is a fast-curing hardener and an acceleraator.
Aradur 33641 is a formulated fast cure amine.

Aradur 33641 exhibits good surface properties without sensitivity to atmospheric humidity.
Aradur 33641 exhibits chemical resistance, corrosion resistance, excellent film appearance, and good mechanical properties with low viscosity.
Aradur 33641 complies with German KTW regulations (list 1) for potable water.

Aradur 33641 is a BzOH-free hardener.
Aradur 33641 is a formulated fast cure amine and recommended to enhance chemical resistance.
Aradur 33641 complies with German KTW regulations (list 1) for potable water and food contact (EU).
Aradur 33641 has a shelf life of at least 1 year.

 
USES and APPLICATIONS of ARADUR 33641:
Product End Uses of Aradur 33641: 2K (2 Component) Adhesive, Chemical-Resistant Coatings, Epoxy Coating, Pipe Coating, Solventless & High Solids Coating, Tank Linings
Aradur 33641 is used to formulated, fast-curing hardener for low-temperature cure and chemical-resistant coatings.
In combination with liquid epoxy resins such as Araldite GY 250, PY 302-2, BY 157 and BY 158, Aradur 33641 is suitable for the production of fast curing solvent-free heavy-duty epoxy coatings.

With its high degree of reactivity, Aradur 33641 can also be used as a curing accelerator in conjunction with polyamidoamine or polyamine hardeners.
Aradur 33641 is primarily used as a fast-curing hardener and accelerator in two-component epoxy coating systems formulated for corrosion protection and chemical resistance.
Aradur 33641 is widely employed in chemical-resistant coatings, solvent-free coatings, high-solids coatings, pipe coatings, tank linings, industrial maintenance coatings, and protective coatings exposed to aggressive industrial environments.

Aradur 33641 exhibits good surface properties without sensitivity to atmospheric humidity.
Aradur 33641 is used in exterior vehicle (OEM), interior vehicle (OEM), vehicle assembly (OEM), battery cover sealing & battery assembly, cable sealing, motor and magnet bonding, potting and encapsulating, assembly, thermally & electrically conductive, household appliance assembly, sporting goods, medical device assembly, aircraft & aerospace, marine, rail, recreational vehicle, truck, sport & leisure and wind in adhesive applications.

Its excellent film appearance and humidity tolerance make Aradur 33641 particularly suitable for coatings applied under challenging environmental conditions.
Aradur 33641 is also extensively used in epoxy structural adhesives for automotive OEM assembly, transportation equipment, aircraft and aerospace structures, marine applications, rail vehicles, recreational vehicles, trucks, wind energy components, sporting goods, household appliances, battery cover sealing, battery assembly, cable sealing, motor and magnet bonding, thermally and electrically conductive adhesives, medical device assembly, potting compounds, and encapsulation systems.

Aradur 33641 is used for low temperature cure, chemical resistant-, epoxy-, pipe-, solventless & high solids coating, and tank lining.
Aradur 33641 is food contact acceptable, substances of very high concern (SVHC) chemicals-, and volatile organic compound (VOC)-free.
The combination of rapid curing, low viscosity, excellent adhesion, and chemical resistance makes Aradur 33641 suitable for a broad range of industrial bonding and protective applications.

Aradur 33641 is also appropriate for potable water and food-contact applications where the complete cured formulation satisfies applicable regulatory requirements.
Aradur 33641 exhibits excellent cure performance even under humid atmospheric conditions, minimizing surface defects such as amine blush while providing durable mechanical properties.

Aradur 33641 is widely used in chemical-resistant coatings, tank linings, pipe coatings, structural adhesives, electrical encapsulation, and transportation applications.
Aradur 33641 is a formulated, fast-curing amine hardener and accelerator used primarily with epoxy polymers.
Aradur 33641 is used for ambient-temperature cure applications, delivering excellent chemical resistance, corrosion protection, and mechanical strength.

KEY FEATURES AND USES of ARADUR 33641:
Performance: 
Aradur 33641 offers low viscosity, good surface appearance, and abrasion resistance without sensitivity to atmospheric humidity.
Compliance: 
Aradur 33641 is VOC-free, SVHC-free, and complies with German KTW regulations for potable water contact.
Primary Applications of Aradur 33641: 
Solventless and high solids coatings, tank linings, 2K adhesives, heavy-duty pipe coatings, and bonding/potting in automotive and aerospace assemblies.

BENEFITS of ARADUR 33641:
Aradur 33641 provides rapid ambient-temperature curing while maintaining excellent mechanical performance and attractive surface quality.
Aradur 33641's low-viscosity formulation improves handling, mixing, and application while ensuring effective substrate wetting and strong adhesion.
Aradur 33641 significantly enhances corrosion resistance, chemical resistance, and long-term durability of cured epoxy systems.

Because Aradur 33641 is benzyl alcohol-free, low-VOC, and SVHC-free, it supports environmentally responsible formulations with improved occupational safety.
Aradur 33641's resistance to atmospheric humidity during curing minimizes surface defects and contributes to consistent coating quality.
Compliance with German KTW potable water requirements further extends its suitability to specialized infrastructure and water-contact applications.

TYPICAL FORMULATION (APPROXIMATE – PROPRIETARY) of ARADUR 33641:
A typical solvent-free epoxy coating or structural adhesive formulation using Aradur 33641 may contain:
Epoxy resin: 100 parts
Aradur 33641 hardener: 
According to the epoxy equivalent weight and recommended stoichiometric ratio
Mineral fillers: 0–150 parts (optional)
Pigments: 0–25 parts (optional)
Flow modifiers, defoamers, wetting agents, or rheology additives: 0–5 parts (optional)
The exact formulation is proprietary and depends on the required cure speed, viscosity, mechanical properties, and chemical resistance.

CHARACTERISTICS of ARADUR 33641:
Aradur 33641 is a modern formulated polyamine curing agent engineered to combine rapid curing with excellent durability and attractive surface quality.
Unlike many conventional fast-curing amine hardeners, Aradur 33641 demonstrates very low sensitivity to atmospheric humidity during curing, significantly reducing surface defects such as amine blush and improving the appearance of cured films.

The formulation of Aradur 33641 is completely free of benzyl alcohol, helping reduce VOC emissions while maintaining low viscosity and excellent processing characteristics.
The cured epoxy systems exhibit high mechanical strength, outstanding corrosion protection, excellent chemical resistance, and long-term durability.
Because of its balanced curing profile, Aradur 33641 is suitable for both industrial coating formulations and high-performance structural adhesive systems requiring rapid return to service.

PHYSICAL and CHEMICAL PROPERTIES of ARADUR 33641:
Physical state: Liquid
Appearance: Clear to slightly yellow liquid
Odor: Characteristic amine odor
Chemical family: Polyamines
Product type: Formulated fast-curing amine
Cure mechanism: Epoxy–amine addition reaction
Low viscosity
Fast ambient-temperature curing
Fast strength development

Excellent compatibility with epoxy resins
Good processing characteristics
Good wetting properties
Excellent surface appearance after curing
Low sensitivity to atmospheric humidity
Reduced tendency for amine blush
Excellent film formation
High crosslink density after curing

Excellent adhesion to metals, concrete, composites, and mineral substrates
Excellent corrosion resistance
Excellent chemical resistance
Good water resistance after complete cure
Good moisture resistance
Good mechanical properties
Good impact resistance
Good abrasion resistance
Low curing shrinkage

High dimensional stability
Suitable for solvent-free formulations
Suitable for high-solids formulations
Low VOC formulation
Benzyl alcohol-free (BzOH-free)
SVHC-free (free of Substances of Very High Concern)
Food-contact acceptable in suitable formulations
Complies with German KTW (List 1) requirements for potable water applications when used in compliant formulations
Shelf life: At least 1 year under recommended storage conditions
Stable under recommended storage conditions

Product Functions: Accelerator, Curing Agent, Hardener
Chemical Family: Amines
Material Compatibility: Epoxy (EP) Polymers
Product family: Crosslinking / Coupling / Curing Agents|Catalysts / Accelerators / Initiators
Product Type: Additives
Product Name: ARADUR® 33641
Product Type: Formulated Fast-Cure Epoxy Hardener / Accelerator
Chemical Family: Polyamines
CAS Number: Mixture (no single CAS number assigned)
EC Number: Mixture (no single EC number assigned)
Molecular Formula: Not applicable (proprietary formulated mixture/UVCB)
Molecular Weight: Not applicable (mixture)
Physical Form: Liquid
Cure Mechanism: Epoxy–amine addition reaction

FIRST AID MEASURES of ARADUR 33641:
-Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation: 
Fresh air.
*In case of skin contact: 
Take off immediately all contaminated clothing. 
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact: 
Rinse out with plenty of water. 
Call in ophthalmologist. 
Remove contact lenses.
*If swallowed:
After swallowing: 
Immediately make victim drink water (two glasses at most). 
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available

ACCIDENTAL RELEASE MEASURES of ARADUR 33641:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains. 
Collect, bind, and pump off spills. 
Observe possible material restrictions. 
Take up dry. 
Dispose of properly. 
Clean up affected area.

FIRE FIGHTING MEASURES of ARADUR 33641:
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2) 
Foam 
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of ARADUR 33641:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection. 
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A 
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of ARADUR 33641:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed. 
Dry.

STABILITY and REACTIVITY of ARADUR 33641:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available