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JEFFAMINE® T-403 polyetheramine is characterized by repeating oxypropylene units in the backbone. JEFFAMINE® T-403 is a trifunctional primary amine having an average molecular weight of approximately 440. Its amine groups are located on secondary carbon atoms at the ends of aliphatic polyether chains.
JEFFAMINE® T-403 is a trifunctional primary amine polyetheramine from Huntsman, built on repeating oxypropylene units with an average molecular weight of approximately 440. Its amine groups sit on secondary carbon atoms at the ends of three aliphatic polyether chains branching from a central core — the trifunctional structure is what distinguishes it from Huntsman's difunctional JEFFAMINE D-230, giving T-403 a role as a crosslinker/branching agent rather than a simple chain-extending curing agent.
Consistent with that higher functionality, T-403 carries a substantially higher AHEW (81 g/eq, versus 60 g/eq for D-230) and a much higher viscosity (72 cSt at 25°C, versus 9.5 cSt for D-230) — the third amine arm adds molecular weight and branching without adding equivalent reactive sites per unit mass.
APPLICATIONS
• Epoxy curing agent
• Anti-sag agent for polyurethanes
BENEFITS
• Low color and vapor pressure
• Completely miscible with a wide variety of solvents, including water
• Improves flexibility and strength
| Property | Specifications | Test Method* |
| Appearance | Colorless to pale yellow with slight haze | ST-30.1 |
| Color, Pt-Co | 50 max. | ST-30.12 |
| Primary amine, % of total amine | 90 min. | ST-5.34 |
| Total acetylatables, meq/g | 6.5 - 7.1 | ST-31.39 |
| Total amine, meq/g | 6.1 - 6.6 | ST-5.35 |
| Water, wt% | 0.25 max. | ST-31.53, 6 |
*Methods of Test are available from Huntsman Corporation upon request.
JEFFAMINE® T-403 is available in bulk, in totes, and in drums of 440 lb (200 kg) net weight. Small evaluation samples are available on request.
This product may be toxic and requires special precautions in handling — please review the Safety Data Sheet before use. Contact our sales team to request the latest TDS/SDS documents for JEFFAMINE® T-403.
We cooperate with multiple well-known domestic suppliers
Our products have passed various industry certifications
