ARADUR 20115 I 73

Aradur 20115 I 73 is widely employed in industrial maintenance coatings used to protect steel structures, machinery, storage tanks, pipelines, bridges, and manufacturing equipment from corrosion and chemical attack.
In marine coatings, Aradur 20115 I 73 provides durable protection for ships, offshore structures, docks, ballast tanks, and other equipment exposed to saltwater and harsh environmental conditions.

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

SYNONYMS:
ARADUR® 20115 I 73, Aradur 20115 I73, Aradur 20115, Polyamidoamine in 2-Propanol, Polyamidoamine Epoxy Hardener, Polyamidoamine Curing Agent, Epoxy Resin Hardener, Polyamide-Amine Hardener

Aradur 20115 I 73 is a specialized polyamidoamine curing agent in 2-propanol, manufactured by Huntsman Advanced Materials.
Aradur 20115 I 73 is formulated without benzyl alcohol and is widely used for crosslinking epoxy systems in heavy-duty coatings, sealers, and construction applications.
Aradur 20115 I 73 is known for its excellent compatibility in solvent-free and solvent-borne epoxy formulations, delivering strong adhesion and flexibility.

Aradur 20115 I 73 is a solvent-based polyamidoamine epoxy curing agent (hardener) developed for use with solid epoxy resin systems.
Aradur 20115 I 73 consists of a polyamidoamine dissolved in 2-propanol (isopropyl alcohol) and is primarily intended for industrial maintenance coatings, marine coatings, and protective coating formulations.

Aradur 20115 I 73 is designed to provide good adhesion, corrosion resistance, flexibility, and chemical resistance while remaining free of benzyl alcohol.
Aradur 20115 I 73 complies with REACH requirements and is commonly used in ambient-curing epoxy coating systems.

USES and APPLICATIONS of ARADUR 20115 I 73:
Aradur 20115 I 73 is primarily used as a curing agent for solvent-based epoxy resin coatings where high-performance protective properties are required.
Aradur 20115 I 73 is widely employed in industrial maintenance coatings used to protect steel structures, machinery, storage tanks, pipelines, bridges, and manufacturing equipment from corrosion and chemical attack.

In marine coatings, Aradur 20115 I 73 provides durable protection for ships, offshore structures, docks, ballast tanks, and other equipment exposed to saltwater and harsh environmental conditions.
Aradur 20115 I 73 is also suitable for anti-corrosion primers, protective topcoats, structural steel coatings, heavy-duty maintenance paints, and epoxy coating formulations requiring excellent adhesion to metal substrates.

Aradur 20115 I 73 is frequently incorporated into protective coating systems used in power plants, chemical processing facilities, oil and gas installations, transportation infrastructure, and water treatment equipment.
Because of its compatibility with solid epoxy resins, Aradur 20115 I 73 is commonly selected for high-performance industrial coating formulations where durability, flexibility, and long service life are critical.

BENEFITS of ARADUR 20115 I 73:
Aradur 20115 I 73 provides an excellent balance between mechanical strength and coating flexibility, helping to reduce cracking under mechanical stress.
Aradur 20115 I 73 promotes outstanding adhesion to steel and other metallic substrates while contributing to superior corrosion resistance in aggressive environments.
Aradur 20115 I 73's benzyl alcohol-free formulation supports coating systems designed with lower levels of certain volatile components.

Aradur 20115 I 73 develops durable cured films with high impact resistance, abrasion resistance, and long-term chemical stability.
Aradur 20115 I 73 also provides reliable room-temperature curing, good compatibility with pigments and fillers, excellent wetting properties, and consistent processing characteristics.
The resulting coatings maintain their protective performance over extended service periods, reducing maintenance frequency and improving asset protection in industrial and marine environments.

CHARACTERISTICS of ARADUR 20115 I 73:
Aradur 20115 I 73 is formulated as a polyamidoamine curing agent dissolved in isopropyl alcohol for solvent-based epoxy coating systems.
Aradur 20115 I 73 is specifically engineered to deliver reliable curing performance while maintaining excellent compatibility with solid epoxy resins.
Its formulation is free from benzyl alcohol, making Aradur 20115 I 73 suitable for coating systems where reduced benzyl alcohol content is preferred.

Aradur 20115 I 73 offers an excellent balance of flexibility, adhesion, corrosion protection, and chemical resistance, making it particularly valuable in protective coating applications.
Aradur 20115 I 73 also exhibits good pigment wetting characteristics, long pot life compared with many fast-curing amine systems, and consistent curing under ambient conditions.
The cured coatings possess excellent toughness, impact resistance, and long-term durability in demanding industrial environments.

KEY SPECIFICATIONS AND BENEFITS of ARADUR 20115 I 73:
Product Form: Supplied as a clear-to-yellowish liquid solution.
Viscosity: Typically ranges between 1400 - 3200 mPa·s at 25°C.
Amine Value: Roughly 165 - 185 mg KOH/g.
Solvent: Diluted with 2-propanol (isopropyl alcohol).

COMPONENT DETAILS of ARADUR 20115 I 73:
Polyamidoamine
Function: Active epoxy curing agent (hardener)
Approximate content: 73 wt.%
CAS Number: Proprietary mixture (no single CAS number assigned)
EC Number: Not applicable (proprietary polymeric mixture)
Molecular Formula: Not applicable (polymeric material)
Molecular Weight: Variable (polymeric material)
Purpose: Reacts with epoxy resins to form a highly crosslinked thermoset network, providing excellent adhesion, corrosion resistance, flexibility, toughness, and chemical resistance.

2-Propanol (Isopropyl Alcohol, IPA)
Function: Solvent
Approximate content: 27 wt.%
CAS Number: 67-63-0
EC Number: 200-661-7
Molecular Formula: C₃H₈O
Molecular Weight: 60.10 g/mol
Purpose: Reduces viscosity, improves flow and application properties, enhances substrate wetting, and evaporates during the curing process.
Typical Formulation (Approximate)
Polyamidoamine: ~73%
2-Propanol (Isopropyl Alcohol): ~27%

COMPONENTS of ARADUR 20115 I 73:
Aradur 20115 I 73 is a proprietary solvent-based polyamidoamine epoxy curing agent. The manufacturer does not publicly disclose its complete formulation. Based on Huntsman's technical documentation and product designation, the formulation consists primarily of the following components:
Polyamidoamine (active epoxy curing agent) – approximately 73 wt.%
2-Propanol (Isopropyl Alcohol, IPA) (solvent) – approximately 27 wt.%
The designation "I 73" indicates that the product is a 73% solids solution of a polyamidoamine curing agent in 2-propanol (isopropyl alcohol).

PHYSICAL and CHEMICAL PROPERTIES of ARADUR 20115 I 73:
Physical state: Liquid
Appearance: Amber to brown liquid
Odor: Characteristic amine odor
Chemical type: Polyamidoamine solution
Solvent: 2-Propanol (Isopropanol)
Solids content: Approximately 73%
Viscosity (25°C): Approximately 1,400–3,200 mPa·s
Amine Value: Approximately 165–185 mg KOH/g
Hydrogen Active Equivalent Weight: Approximately 330 g/eq

Gel Time (with Araldite® GY 250 at 23°C): Greater than 1000 minutes
Gardner Color: ≤12
Cure mechanism: Amine addition reaction with epoxy groups
Cure type: Ambient temperature curing
Compatible resin systems: Solid epoxy resins
Benzyl alcohol: Free
Nonylphenol: Free
REACH compliant
Good storage stability under recommended conditions

Miscible with suitable epoxy coating solvents
Excellent film-forming capability after curing
Forms highly crosslinked thermoset polymer networks
Good wetting of metal substrates
Low volatility after curing
Good processing characteristics
Moderate working life depending on resin formulation
Suitable for solvent-based epoxy coating formulations
Good adhesion to metallic substrates

Resistant to moisture after full cure
Good mechanical durability
Good resistance to weathering compared with conventional polyamide curing agents
Compatible with pigments and fillers commonly used in protective coatings
Suitable for room-temperature curing systems
Excellent balance between flexibility and hardness
Produces chemically resistant cured films
Low shrinkage during curing
Stable under normal storage conditions when kept in tightly closed containers.

Product Type: Polyamidoamine solution in 2-propanol
CAS Number: Mixture (no single CAS number assigned)
EC Number: Mixture (no single EC number assigned)
Molecular Formula: Not applicable (UVCB/formulated mixture)
Molecular Weight: Not applicable (mixture)
Chemical Family: Polyamidoamine curing agent
Solvent: 2-Propanol (Isopropanol)
Appearance: Amber to brown liquid (typical)

FIRST AID MEASURES of ARADUR 20115 I 73:
-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 20115 I 73:
-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 20115 I 73:
-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 20115 I 73:
-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 20115 I 73:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed. 
Dry.

STABILITY and REACTIVITY of ARADUR 20115 I 73:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available