3,3′-Dimethyl-4,4′-diaminodicyclohexylmethane (MACM) is a cycloaliphatic secondary diamine with CAS Number 6864-37-5. It appears as a colorless to slightly yellow, low-viscosity liquid with a characteristic amine-like odor.
This alicyclic design provides superior performance compared to aromatic amines, including better UV stability, color retention, and resistance to yellowing.
This versatile cycloaliphatic diamine serves as an outstanding curing agent for epoxy resins and a key building block for high-performance polyamides and polyurethanes.

 

Technical Specifications

ITEMS SPECIFICATIONS
Appearance Colorless transparent viscous liquid
Assay ≥99.0%
Water ≤0.3%
Color (Apha) ≤12

 

Package & Storage

  • Net weight 180kgs in steel drum, 14.4MT/20’FCL with pallets.
  • Put in airtight container and store in a cool, dry and well-ventilated place. Keep away from sources of ignition, heat, light, strong oxidizers, acid and so on.

 

Key Benefits of 3,3′-Dimethyl-4,4′-diaminodicyclohexylmethane (MACM)

Excellent Chemical and Moisture Resistance:
Cured systems withstand harsh environments, including acids, solvents, and water exposure.

High Transparency and Color Stability:
Ideal for clear coatings and optical-grade applications with minimal yellowing.

High Glass Transition Temperature (Tg):
Provides superior heat resistance and mechanical performance.

Good Adhesion and Mechanical Strength:
Enhances bonding to metals and substrates while delivering toughness and flexibility.

Low Viscosity and Easy Processing:
Facilitates mixing and application in low-VOC systems.

Weatherability and UV Stability:
Performs well in outdoor or light-exposed.

 

Applications and Uses of 3,3′-Dimethyl-4,4′-diaminodicyclohexylmethane (MACM)

MACM is widely applied across multiple high-performance sectors:

Epoxy Resin Curing

  • High-performance epoxy hardener for floorings, self-leveling coatings, and industrial paints.
  • Jewelry glue, polishing compounds, and decorative epoxy systems.
  • Marine coatings, heavy-duty anti-corrosion paints, and protective coatings.
  • Composites, adhesives, and electronic encapsulation materials.

Polyamides and Polyurethanes

  • Building block for transparent, high-Tg polyamides with excellent chemical resistance.
  • Chain extender in polyurethane elastomers and coatings.
  • Specialty resins requiring clarity and durability.

Other Industrial Uses

  • Adhesives and sealants
  • Construction materials (e.g., epoxy flooring)
  • Chemical intermediate for advanced polymer syntheses.

 

Frequently Asked Questions (FAQs)

Q: What is MACM primarily used for?
A: MACM is mainly used as a high-performance curing agent (hardener) for epoxy resins and as a monomer for transparent polyamides and polyurethanes. It excels in applications requiring chemical resistance, clarity, and durability, such as industrial coatings, floorings, adhesives, and composites.

Q: How does MACM compare to other epoxy curing agents?
A: Unlike aromatic amines, MACM (a cycloaliphatic diamine) provides better UV stability, reduced yellowing, higher transparency, and excellent chemical/moisture resistance while maintaining strong mechanical properties and adhesion.

Q: Is MACM suitable for clear or decorative epoxy applications?
A: Yes. Its cycloaliphatic structure delivers outstanding color stability and transparency, making it ideal for jewelry glue, polishing compounds, clear coatings, and optical-grade epoxies.

Q: What are the storage requirements for MACM?
A: Put it in airtight container and store in a cool, dry and well-ventilated place. Keep away from sources of ignition, heat, light, strong oxidizers, acid and so on.

 

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