Industrial — Process Challenge

Epoxy Hardeners & Amine Curing Agents (Pot-Life Control)

Choosing an amine hardener that hits the target gel/cure time, pot life, and ambient/low-temperature cure for a given epoxy without flushing/exotherm problems
Why It Matters
Choosing an amine hardener that hits the target gel/cure time, pot life, and ambient/low-temperature cure for a given epoxy without flushing/exotherm problems
Solution Approach

Choosing an amine hardener that hits the target gel/cure time, pot life, and ambient/low-temperature cure for a given epoxy without flushing/exotherm problems RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.

Typical Formulation Workflow
1
System & Substrate Assessment
Define the binder system (waterborne, solventborne, UV, powder), substrate, cure, and the VOC, durability, and appearance targets.
2
Additive & Resin Selection
Match resins, pigments and fillers, dispersants, rheology modifiers, defoamers, or biocides to the formulation and compatibility window.
3
Lab Let-Down & Optimization
Dial in loading and addition order through lab let-downs, checking dispersion, rheology, film properties, and storage stability.
4
Application & Performance Testing
Validate on the real application method and substrate, tracking gloss, adhesion, sag, cure, and weathering before scale-up.
Recommended Chemistries (5)
Diethylenetriamine
CAS 111-40-0
Amines & Amides
Fast cure, high exotherm — grouts and primers
2079 (DIETHYLENETRIAMINE) · Class
Highly reactive primary/secondary amine — fast ambient cure and high exotherm for grouts and primers; short pot life
Melting Point: -39 °C   Boiling Point: 207 °C at 760 mmHg   Density: 0.954 at 20 °C
Full Details
Triethylenetetramine
CAS 112-24-3
Amines & Amides
Medium reactivity — general purpose epoxy cure
2259 (TRIETHYLENETETRAMINE) · Class
General-purpose aliphatic hardener giving a balanced reactivity/pot-life profile for floor and maintenance coatings
Melting Point: 12 °C   Boiling Point: 266–267 °C at 760 mmHg   Density: 0.982 at 20 °C
Full Details
Isophorone diamine (IPDA)
CAS 2855-13-2
Amines & Amides
Industry standard for clear, chemical-resistant coatings
2289 (ISOPHORONEDIAMINE) · Class
Cycloaliphatic diamine — longer pot life, low blush, and clear chemical-resistant films vs aliphatic amines
Physical Description: Isophoronediamine appears as a clear to light-y…   Appearance: Colorless liquid   Odor: Characteristic odor
Full Details
Polyetheramine T-403
CAS 39423-51-3
Amines & Amides
Crosslinking / Curing
Trifunctional polyether amine extends pot life and adds flexibility/toughness, moderating cure exotherm
Full Details
Bisphenol A diglycidyl ether (DGEBA) epoxy resin
CAS 25068-38-6
Specialty Additives
Film Formation
Standard liquid epoxy whose epoxide equivalent weight sets the stoichiometric amine demand for the cure
Full Details

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