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Dytek® A
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Producer: 
INVISTA
Brand: 
Dytek
DYTEK® A is a colorless, low-viscosity liquid with a very low freezing point, low vapor pressure, and an "amine-like" odor. Structurally, it is a methyl-branched, 5-carbon chain diamine.

Dytek® A

Producer: 
INVISTA
Brand: 
Dytek
DYTEK® A is a colorless, low-viscosity liquid with a very low freezing point, low vapor pressure, and an "amine-like" odor. Structurally, it is a methyl-branched, 5-carbon chain diamine.
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Applications & Uses

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Adhesive & Sealant Types
Coating Type
Fluids & Lubricants Type
Plastics & Elastomers Processing Methods
Epoxy Curatives

Epoxy resins cured with Dytek® amines have excellent properties for use in coatings, civil engineering, adhesives, marine, and composite applications. 

Features Typical Applications
  • Low viscosity vs. IPDA
  • Chemical resistance
  • Highest Tg of all Dytek® Amines
  • Tank linings with chemical exposure
  • High temperature applications
  • Wind turbine blades
  • High-performance composite parts
Applications & Uses
  • Polyamide plastics, films, and fibers
  • Polyamide adhesive and ink resins
  • Corrosion inhibitor
  • Epoxy curing agents
  • Water treatment chemicals
  • Metalworking Fluids
  • Isocyanates
  • Chain extenders (Polyurethanes)
Epoxy Applications

Industrial and Marine Coatings:

DYTEK® A amine provides good metal adhesion, chemical & corrosion resistance, and toughness for demanding industrial and marine applications.

Decorative Coatings:

DYTEK® A amine imparts a high gloss, low blush, uniform finish and improves UV stability compared to alternative amines.

Low Temperature Curative:

DYTEK® A amine’s low viscosity and fast cure rate make it an excellent choice for low temperature application and curing.

Accelerator:

When used with slower curatives like polyether- or cyclo-aliphatic amines, small amounts of DYTEK® A amine can reduce gel time while maintaining key mechanical properties of final product.

Polyurethane and Polyurea

DYTEK® A amine is used as a chain extender in polyurethane applications. Differential reactivity due to the methyl substituent influences cross-linking and crystallinity.

DYTEK® A amine derivatives such as secondary amines, aspartic esters, ketoimines and aldimines can be used as curatives in polyurea systems.

The diisocyanate from DYTEK® A amine can impart unique properties to elastomer and sealant formulations.

Hot Melt Adhesives

DYTEK® A amine can be used as an alternative to hexamethylene diamine to lower melting point, improve thermal stability and flexibility, and allow for more open time. Aldimine derivatives can be used in moisture-cured polyurethane reactive hot melts.

High Performance Polyamides

DYTEK® A amine acts as a crystallinity disruptor, making polymers more amorphous and slower to crystallize. Potential benefits include lower melting point, improved surface appearance, reduced gelling, reduced melt and quench temperatures, reduced water absorption, improved dye uptake, and increased abrasion resistance.

In addition, DYTEK® A amine may allow for more versatility in polymer composition such as reducing the amount of isophthalic acid needed to maintain transparency or reducing total cost by allowing use of lower cost acids, such as terephthalic acid.

Other Applications

Neutralizing or Buffering Agent:

Typically does not produce insoluble salts.

Metalworking Fluids:

Suppresses iron and amine discoloration, improves corrosion resistance and provides effective pH control, extends life by reducing formation of dark color and sediment.

Properties

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Compatible Resins & Binders
Compatible Substrates & Surfaces
Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
2-Ethyltetramethylenediamine Content0.3wt%
2-Methylpentamethylenediamine Content99wt%
Amine Equivalent Weight58
Amine Value967mgKOH/g
Boiling Point192 (378)°C (°F)
Color2APHA
Critical Pressure (Pc)35.3atm
Critical Temperature (Tc)383°C
Critical Vapourization (Vc)424mL/g·mol
Flash Point83 (181)°C (°F)Closed Cup
Freezing Range-56 to -60 (-68 to -76)°C (°F)
H-Equivalent Weight29
Hansen Solubility Parameters (H-Bonding)5.5
Hansen Solubility Parameters (Nonpolar)8.2
Hansen Solubility Parameters (Overall)10.4
Hansen Solubility Parameters (Polar)3.1
Heat of Combustion (∆Hc)9100cal/g
Heat of Vaporization (∆Hv at 193°C)92.8cal/g
Methylcyclopentanediamine Content0.6wt%
Molecular Weight116.2
Partition Coefficient (Kow)0.8
pH (5% Aqueous Solution at 25°C)12.1
pKa1 (at 25°C (77°F))11.2
pKa2 (25°C (77°F))10
Refractive Index (at 25°C (77°F))1.4588nD
Specific Gravity (at 25°C (77°F))0.86
Surface Tension (at 24°C (77°F))34.9dyn/cm
Viscosity (at 22.6°C (73°F))2.63cP
Appearance
Clear and free of suspended materials
Miscible In
Water

Technical Details & Test Data

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Vapor Pressure of Dytek® A amine

Aspartic Esters

Packaging & Availability

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Packaging Information
Railcar Net Weight : 140,000/63,500 (lbs/kg)
Tank truck Net Weight : 42,000/19,000 (lbs/kg)
ISO containers Net Weight : 40,000/18,100 (lbs/kg)
Steel Drums Net Weight : 375/170 (lbs/kg)

Store DYTEK® A amine under nitrogen padding. Extended storage of DYTEK® A amine in unlined carbon steel vessels may cause color formation. Teflon® fluoropolymer or graphite is preferred for gaskets and packings.

Documents (2)

Name
Type
Dytek® A Technical Data Sheet
Technical Data Sheet
Dytek® A Information Sheet
Safety Data Sheet