Dytek® PEPDA Curatives | Primary Amines

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Product Information

Molecular Structure
Chemical NamePropyl Ethyl Pentane Diamine
CAS Number75405-14-0
Chemical FormulaC10H24N2
Molecular Weight172.32 g/mol

Chemical & Physical Properties

Property Name Value
ViscosityTBD
Amine Value651
Hydrogen Equivalent Weight43.1
Recycled Content94%

Synthesis of 3-ethyl-2-propyl-1,5-pentanediamine (PEPDA)

Summary

Propylethylpentamethylene diamine (PEPDA) is a developmental stage diamine designed for use in epoxy and isocyanate systems as well as a monomer in high performance polyamides. As an epoxy curative, PEPDA provides a long pot life and gel time, good chemical resistance, and high shore D hardness. PEPDA has no odor and is a colorless low viscosity liquid with 97% recycled content. Performance of formulated epoxy systems suggests PEPDA may be used as an alternative to trimethyl hexamethylene diamine (TMD).

Comparison to TMD in a Standard Epoxy Blend

Trimethyl hexamethylene diamineDytek® PEPDA
Epoxy blend viscosity, cP778697
Gel time, min6082
Pot life, 100 g sample4264
Temperature, (max,°C)184183
Shore D8484
Heat Deflection Temperature, °C98100
Flexural Strength, (psi x 103)14.816.3
Elasticity Modulus, (psi x 103)382382
Tensile Strength, (psi x 103)9.728.37
Elongation at Break, %4.183.26
Dielectric constant, 1 MHz, 25°C3.943.68
Chemical Resistance(wt% change)(wt% change)
Deionized water0.780.62
10 wt% acetic acid (aq)4.982.05
10 wt% HCl (aq)0.650.89
10 wt% NaOH (aq)0.600.65
Xylene-0.020.12
Gasoline0.270.17

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