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ARADUR 75-1 is a medium-viscosity, formulated polyether-urethane polyamine.
ARADUR 75-1 (manufactured by Huntsman) is a medium-viscosity, formulated polyether-urethane polyamine primarily used as an epoxy resin curing agent.
ARADUR 75-1 is specifically engineered to provide flexible, durable, and resilient bonds in various industrial coatings, adhesives, and composite applications.
Chemical Name: ARALDITE M
CAS No.:3101-60-8
Molecular Formula: C13H18O2
Molecular weights: 206.28
Appearance: Colorless liquid
Content: 98%
Synonyms: 4-TERT-BUTYLPHENYL GLYCIDYL ETHER,p-tert-Butylphenyl glycidyl ether,r1007,XY693,R 1007,Heloxy 65,ARALDITE M,ARALDITE 502,ARALDITE 506,ARALDITE 507
ARADUR 75-1 is a medium-viscosity, formulated polyether-urethane polyamine curing agent (hardener) developed for use with liquid epoxy resins.
ARADUR 75-1 is primarily used in two-component epoxy systems where excellent flexibility, toughness, and adhesion are required.
ARADUR 75-1 is manufactured by Huntsman and is widely applied in protective coatings, waterproofing membranes, sealants, and flexible binder systems.
ARADUR 75-1 is an organic compound characterized by its glycidyl ether functional group, which is derived from the reaction of epichlorohydrin with p-tert-butylphenol.
This compound typically appears as a colorless to pale yellow liquid and is known for its low viscosity and moderate volatility.
ARADUR 75-1 has a relatively high boiling point and is soluble in organic solvents, making it useful in various applications, including as a reactive diluent in epoxy resins and coatings.
The presence of the tert-butyl group enhances its hydrophobic properties and thermal stability.
ARADUR 75-1 is also recognized for its potential to participate in polymerization reactions, contributing to the formation of cross-linked networks in thermosetting materials.
However, ARADUR 75-1 is important to handle this compound with care, as ARADUR 75-1 may pose health risks upon exposure, including skin and eye irritation.
Proper safety measures should be observed when working with this chemical in laboratory or industrial settings.
Core Properties & Specifications
Chemical Class: Polyether-urethane polyamine.
Physical Form: Medium-viscosity liquid.
Function: Serves as a hardener/curing agent for epoxy systems.
Primary Applications: Coatings, structural adhesives, and resin matrices.
Storage
ARADUR 75-1 should be stored in its original sealed container in a dry environment at temperatures between 2°C and 40°C.
ARADUR 75-1 should be protected from direct sunlight and moisture to maintain its performance.
Uses
ARADUR 75-1 is used in paint industry and serves as organic coating in Paint, boat Paint, building coating material.
ARADUR 75-1 is also used as an epoxy reactive diluent.
Uses
Its major uses are in the production of epoxy resins and curing agents and also in polycarbonate resins.
ARADUR 75-1 has also found use in the production of phenolic resins.
Another use is in the production of para tertiary butylphenol formaldehyde resin.
ARADUR 75-1 has also found use as a plasticizer.
ARADUR 75-1 is difunctional and used to produce epoxy resin and polycarbonate.
ARADUR 75-1 is monofunctional and so in polymer science terms, bisphenol A is a polymer chain extender but ARADUR 75-1 is a chain stopper or sometimes called endcapper.
ARADUR 75-1 is thus use to control molecular weight by limiting chain growth.
ARADUR 75-1 has an OH group and so ARADUR 75-1 may be reacted with epichlorohydrin and sodium hydroxide to produce the glycidyl ether which is used in epoxy resin chemistry.
This molecule has the CAS Registry number of 3101-60-8.
General Description
Clear light yellow liquid.
Air & Water Reactions
Ethers tend to form unstable peroxides when exposed to oxygen.
Ethyl, isobutyl, ethyl tert-butyl, and ethyl tert-pentyl ether are particularly hazardous in this respect.
Ether peroxides can sometimes be observed as clear crystals deposited on containers or along the surface of the liquid.
Insoluble in water.
Reactivity Profile
ARADUR 75-1, an ether, can act as a base.
They form salts with strong acids and addition complexes with Lewis acids.
The complex between diethyl ether and boron trifluoride is an example.
Ethers may react violently with strong oxidizing agents.
In other reactions, which typically involve the breaking of the carbon-oxygen bond, ethers are relatively inert.
Key Features
Medium viscosity for easy processing and mixing.
Fast curing at ambient temperatures.
Excellent adhesion to concrete and steel substrates.
High flexibility and elongation after curing.
Outstanding impact resistance and toughness.
Suitable for low-temperature curing (down to approximately -10°C depending on the formulation).
Enables the formulation of low-VOC and low-solvent epoxy systems.
Free from Bisphenol A (BPA) and Nonylphenol, making ARADUR 75-1 suitable for environmentally conscious formulations.
Typical Applications
ARADUR 75-1 is commonly combined with liquid epoxy resins such as Araldite GY 250, GY 783, and GY 784 for the production of:
Crack-bridging membranes
Flexible waterproofing systems
Impact-elastic floor coatings
Protective coatings
Liquid waterproofing membranes
Crack sealers
Viscoelastic binder systems
Industrial sealants and repair materials
Performance Advantages
When cured with compatible epoxy resins, ARADUR 75-1 provides:
Excellent crack-bridging capability.
Superior flexibility compared with conventional epoxy hardeners.
High mechanical strength combined with elastic behavior.
Good resistance to impact and vibration.
Strong adhesion even on difficult substrates such as sand-blasted steel and dry concrete.
Better thermal stability than ARADUR 70 while maintaining excellent flexibility.
ARADUR 75-1 Properties
Boiling point: 165-170 °C14 mm Hg(lit.)
Density: 1.038 g/mL at 25 °C(lit.)
vapor pressure: 0.025Pa at 20℃
refractive index: n20/D 1.515(lit.)
Flash point: 215 °F
storage temp.: Inert atmosphere,Room Temperature
form: Liquid
color: Colorless to Almost colorless
Water Solubility: Slightly soluble in water.
LogP 3.59 at 20℃
ITEMS: SPECIFICATION
Color: ≤60
Viscosity: 15～35
Water content: ≤0.1%
inorganic chloride: ≤20 mg/kg
Inchi Code: 1S/C13H18O2/c1-13(2,3)10-4-6-11(7-5-10)14-8-12-9-15-12/h4-7,12H,8-9H2,1-3H3
Inchi Key: HHRACYLRBOUBKM-UHFFFAOYSA-N
Summary
ARADUR 75-1 is a high-performance epoxy curing agent designed for applications requiring excellent flexibility, impact resistance, adhesion, and durability.
ARADUR 75-1 is particularly suitable for flexible coatings, waterproofing membranes, crack repair systems, and industrial flooring, where conventional rigid epoxy systems may fail due to substrate movement or mechanical stress.
Its BPA-free and nonylphenol-free formulation also supports the development of more environmentally friendly epoxy systems.
