ARADUR 340

Aradur 340 is particularly suitable for industrial maintenance coatings, anti-corrosion systems, protective primers, topcoats, flooring systems, and infrastructure protection where environmental regulations favor low-VOC or solvent-free technologies.
Aradur 340 is also applied in marine maintenance coatings, factory floors, food processing facilities, wastewater treatment plants, utility buildings, storage facilities, and industrial infrastructure where waterborne epoxy systems offer environmental and operational advantages.

CAS Number: Mixture – no single CAS number assigned
EC Number: Mixture – no single EC number assigned
Molecular Formula: Not applicable (commercial mixture)
Molecular Weight: Not applicable (commercial mixture)

SYNONYMS:
ARADUR® 340, Aradur 340, Waterborne epoxy hardener, Waterborne epoxy curing agent, Water-dispersible epoxy hardener, Waterborne polyaminoamide curing agent, Polyaminoamide epoxy curing agent, Polyaminoamide hardener, Polyaminoamide curing agent, Amine-based epoxy hardener, Epoxy resin hardener (waterborne), Solvent-free polyaminoamide curing agent

Aradur 340 acts as a curing agent.
Aradur 340 is a polyamidoamine adduct 49-51% in water.
Aradur 340 is free from benzyl alcohol and provides good flexibility.

Aradur 340 complies with the REACH regulation.
Aradur 340 is a medium viscosity aqueous solution of a polyaminoamide hardener.
It is also possible to combine Aradur 340 Waterborne Epoxy Hardener with epoxy resin emulsions.

Aradur 340 is a high-performance waterborne polyaminoamide epoxy curing agent specifically developed for ambient-temperature curing of epoxy resin systems.
Aradur 340 serves both as a curing agent and an emulsifier, allowing liquid epoxy resins to be dispersed in water without requiring a separate emulsification step.
This unique functionality enables the formulation of environmentally friendly, high-solids, solvent-free or low-VOC epoxy coatings with excellent mechanical performance and chemical resistance.

Aradur 340 is particularly suitable for industrial coatings, civil engineering applications, protective coatings, concrete repair systems, and waterborne epoxy formulations where strong adhesion, flexibility, and durability are required.
Aradur 340's balanced curing characteristics allow formulators to achieve reliable performance while maintaining good processing properties and long-term protection in demanding service environments.

USES and APPLICATIONS of ARADUR 340:
Aradur 340 is designed for civil engineering, industrial maintenance and marine coatings.
Aradur 340 is suitable for waterborne epoxy systems.
Aradur 340 Waterborne Epoxy Hardener emulsifies liquid epoxy resins, without first having them preemulsified, to produce waterborne high solids, ambient-cured coatings for a variety of industrial applications.

Aradur 340 Waterborne Epoxy Hardener emulsifies liquid epoxy resins, without first having them preemulsified, to produce waterborne high solids, ambient-cured coatings for a variety of industrial applications.
It is also possible to combine Aradur 340 Waterborne Epoxy Hardener with epoxy resin emulsions.
Aradur 340 is widely used in the formulation of waterborne epoxy coatings designed for concrete, steel, masonry, cementitious materials, and mineral substrates.

Aradur 340 is particularly suitable for industrial maintenance coatings, anti-corrosion systems, protective primers, topcoats, flooring systems, and infrastructure protection where environmental regulations favor low-VOC or solvent-free technologies.
Because Aradur 340 functions as both an emulsifier and curing agent, formulators can produce stable water-dilutable epoxy coatings with high solids content while reducing formulation complexity.

In civil engineering, Aradur 340 is extensively used in concrete repair systems, waterproof protective coatings, masonry sealers, bridge maintenance coatings, tunnel linings, industrial flooring, warehouses, parking garages, and structural rehabilitation projects.
The cured coatings provide excellent resistance to moisture, chemicals, abrasion, and mechanical wear, extending the service life of concrete and steel structures exposed to aggressive industrial environments.

Aradur 340 is also applied in marine maintenance coatings, factory floors, food processing facilities, wastewater treatment plants, utility buildings, storage facilities, and industrial infrastructure where waterborne epoxy systems offer environmental and operational advantages.
Its compatibility with waterborne epoxy dispersions makes Aradur 340 suitable for modern environmentally responsible coating technologies while maintaining excellent protective performance.

-Aradur 340 is used:
• Protective coatings for plaster, concrete, masonry, and cement.
• Primers for steel.

PROPERTIES of ARADUR 340:
Aradur 340 functions as both a curing agent and an emulsifier, allowing epoxy resin formulations to be dispersed directly in water without the need for additional emulsifying agents.
This dual functionality simplifies formulation design and contributes to the production of stable waterborne epoxy systems with excellent application properties.

Aradur 340 develops strong cross-linked polymer networks that provide outstanding adhesion to mineral substrates, concrete, steel, masonry, plaster, and other construction materials.
Aradur 340's medium viscosity allows easy processing while maintaining good application control for brushing, rolling, or spraying.
The cured epoxy systems exhibit excellent flexibility compared with many conventional amine hardeners, reducing the likelihood of cracking caused by thermal expansion or substrate movement.

Aradur 340 also offers excellent pigment wetting, allowing pigments to be incorporated efficiently into the curing agent phase, which contributes to improved color uniformity and coating stability.
Aradur 340 maintains consistent gloss throughout the usable pot life and provides reliable curing under ambient conditions without requiring elevated temperatures.

PROPERTIES of ARADUR 340:
• Free of organic solvents and neutralizing acids
• Easily pigmented
• Good resistance to water
• Emulsifies liquid epoxy resins
• Aradur 340 offers good chemical resistance
• Aradur 340 offers good mechanical properties

CHARACTERISTICS of ARADUR 340:
Aradur 340 is characterized by its polyaminoamide chemistry, medium viscosity, water compatibility, and solvent-free composition.
Aradur 340 produces epoxy networks that combine flexibility with high mechanical performance, allowing coatings to resist impact, abrasion, and cyclic mechanical loading while maintaining excellent adhesion.

Unlike many conventional solvent-based curing agents, Aradur 340 supports the production of environmentally friendly waterborne epoxy systems without sacrificing protective performance.
Another distinguishing characteristic is Aradur 340's excellent compatibility with emulsified and dispersed epoxy resins, allowing formulators to prepare stable, high-solids coating systems suitable for industrial application.

The cured materials demonstrate excellent resistance to moisture penetration, weathering, corrosion, and chemical attack while maintaining good gloss retention and long-term dimensional stability.
Its combination of curing efficiency, emulsification capability, environmental compatibility, and durable performance makes Aradur 340 a versatile curing agent for a wide range of industrial, construction, and protective coating applications.

SAFETY AND USAGE of ARADUR 340:
Aradur 340 should be handled using appropriate industrial hygiene practices.
Aradur 340 should be stored in its original tightly closed container in a dry, well-ventilated location between 2°C and 40°C, protected from direct sunlight and freezing temperatures.
During mixing with epoxy resins, the recommended mixing ratios supplied by the manufacturer should be followed to achieve optimum curing performance and final material properties.
Any spills should be collected using inert absorbent materials and disposed of according to local environmental regulations.

BENEFITS of ARADUR 340:
Aradur 340 provides numerous advantages for modern waterborne epoxy formulations.
Aradur 340 eliminates the need for separate emulsifiers by acting simultaneously as both a curing agent and an emulsifying component, simplifying formulation development and improving production efficiency.

Aradur 340 is free from organic solvents, helping manufacturers comply with increasingly stringent environmental regulations while reducing VOC emissions.
The cured epoxy systems exhibit excellent adhesion to concrete, masonry, cement, steel, and other construction substrates, ensuring long-lasting protective performance.
High flexibility allows coatings to tolerate substrate movement and thermal expansion without premature cracking or delamination.

Aradur 340 also provides outstanding chemical resistance against water, oils, fuels, salts, cleaning agents, and numerous industrial chemicals, making it suitable for harsh service environments.
Aradur 340 promotes excellent pigment wetting and coating uniformity, contributing to improved appearance and long-term coating stability.

Aradur 340's balanced curing behavior provides practical working time while achieving reliable ambient-temperature curing.
The resulting coatings possess excellent mechanical strength, abrasion resistance, cohesive strength, and durability, reducing maintenance requirements and extending the operational life of protected structures.

COMPONENTS of ARADUR 340:
Aradur 340 is a waterborne polyamidoamine adduct epoxy curing agent. 
Aradur 340 is a proprietary polymeric formulation, not a single chemical substance. 
Aradur 340 is supplied as a 49–51% solids aqueous dispersion and is organic solvent-free. 
Aradur 340 functions both as an epoxy curing agent and as an emulsifier, allowing liquid epoxy resins to be dispersed in water without pre-emulsification.

The formulation consists primarily of the following components:
Polyamidoamine adduct (active epoxy curing agent) – approximately 49–51 wt.%
Water – approximately 49–51 wt.%

COMPONENT DETAILS of ARADUR 340:
Polyamidoamine Adduct
Function: Active epoxy curing agent (hardener) and emulsifier
Approximate content: 49–51 wt.%
CAS Number: Proprietary mixture (no single CAS number assigned)
EC Number: Mixture (no single EC number assigned)
Molecular Formula: Not applicable (polymeric proprietary mixture)
Molecular Weight: Not applicable (polymeric mixture)
Purpose: 
Reacts with epoxy resins to form a highly crosslinked thermoset network while simultaneously emulsifying liquid epoxy resins in water. It provides excellent adhesion, flexibility, chemical resistance, water resistance, and mechanical strength.

Water
Function: Dispersion medium
Approximate content: 49–51 wt.%
CAS Number: 7732-18-5
EC Number: 231-791-2
Molecular Formula: H₂O
Molecular Weight: 18.02 g/mol
Purpose: 
Serves as the carrier for the polyamidoamine adduct, enabling low-VOC, waterborne epoxy formulations and reducing the need for organic solvents.
Typical Formulation (Approximate)
Polyamidoamine adduct: 49–51%
Water: 49–51%

PHYSICAL and CHEMICAL PROPERTIES of ARADUR 340:
Product Name: ARADUR® 340
Chemical Description: Waterborne polyaminoamide epoxy curing agent
Chemical Family: Polyaminoamides
Product Type: Epoxy curing agent / Hardener
CAS Number: Mixture – no single CAS number assigned
EC Number: Mixture – no single EC number assigned
Molecular Formula: Not applicable (commercial mixture)
Molecular Weight: Not applicable (commercial mixture)
Appearance: Clear to yellow-brown liquid

Physical State: Liquid
Odor: Amine odor
Color: Light brown to yellow-brown
Chemical Nature: Waterborne polyaminoamide curing agent
Density: Approximately 1.04 g/cm³ (20°C)
Viscosity: Approximately 18,000–23,000 mPa·s (25°C)
Flash Point: ≥112°C (Pensky-Martens Closed Cup)
Solubility: Miscible with water; compatible with waterborne epoxy resin systems
Water Dilutability: Easily diluted with water while maintaining curing performance
pH: Alkaline (amine-based)
Amine Hydrogen Equivalent Weight (AHEW): Approximately 210 g/eq

Boiling Point: Not specifically established for the commercial mixture
Vapor Pressure: Low under normal conditions
Volatile Organic Content (VOC): Organic solvent-free
Reactivity: Reacts readily with epoxy groups to produce highly cross-linked thermoset polymers
Curing Mechanism: Amine-epoxy addition polymerization
Thermal Stability: Stable under recommended storage conditions
Moisture Sensitivity: Water-compatible formulation; store in tightly sealed containers to prevent contamination
Storage Temperature: Recommended between 2°C and 40°C; protect from freezing and direct sunlight
Shelf Life: Minimum 3 years under recommended storage conditions
Product family: Crosslinking / Coupling / Curing Agents
Chemical family: Amines
Product Type: Additives

FIRST AID MEASURES of ARADUR 340:
-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 340:
-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 340:
-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 340:
-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 340:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed. 
Dry.

STABILITY and REACTIVITY of ARADUR 340:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available