3,3'-Dimethyl-4,4'-diaminodicyclohexylmethane (MACM)

3,3′-Dimethyl-4,4′-diaminodicyclohexylmethane, also known as MACM. This versatile cycloaliphatic diamine serves as an advanced curing agent and chain extender for high-performance epoxy, polyurethane, polyurea, and polyamide systems.

Appearance:
Colorless transparent viscous liquid
CAS No.:
6864-37-5
Molecular Formula:
C15H30N2
Molecular Weight:
238.41
EINECS:
229-962-1
Solubility:
Insoluble in water

Availability:



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Product Description

Product Description

3,3'-Dimethyl-4,4'-diaminodicyclohexylmethane (MACM) is a cycloaliphatic diamine with the CAS Number 6864-37-5. It features two methyl-substituted cyclohexyl rings connected by a methylene bridge, with amino groups at the 4,4′ positions. This structure provides a balanced combination of reactivity and steric hindrance, resulting in cured materials with superior properties compared to many linear aliphatic amines.

It offers low viscosity, good compatibility with epoxy resins, and contributes to high glass transition temperatures (Tg), excellent UV stability, and color retention in final formulations.

MACM serves as an advanced curing agent and chain extender for high-performance epoxy, polyurethane, polyurea, and polyamide systems.

Technical Specifications

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

Packaging & 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.

Benefits of 3,3'-Dimethyl-4,4'-diaminodicyclohexylmethane (MACM)

High Chemical and Moisture Resistance:

Ideal for harsh environments in coatings and composites.

Excellent Transparency and Color Stability:

Produces clear, non-yellowing cured systems suitable for decorative and optical applications.

Elevated Glass Transition Temperature (Tg):

Enhances thermal stability and mechanical strength in polyamides and epoxy systems.

Strong Adhesion to Metals and Substrates:

Provides durable bonding in adhesives and flooring.

Low Viscosity and Good Processability:

Facilitates easy mixing and application in industrial formulations.

Versatile Reactivity:

Functions effectively as a curing agent for epoxies, chain extender for polyurethanes/polyureas, and building block for high-performance polyamides.

Applications of 3,3'-Dimethyl-4,4'-diaminodicyclohexylmethane (MACM)

MACM is widely used across advanced material sectors:

Epoxy Systems

Curing agent for high-performance epoxy resins in flooring, coatings, adhesives, and composites.
Ideal for industrial flooring, marine coatings, heavy-duty anticorrosion paints, and jewelry/polishing adhesives.
Provides superior chemical resistance, abrasion resistance, and mechanical properties.

Polyurethane and Polyurea

Chain extender and crosslinker in PU and polyurea elastomers, coatings, and spray systems (SPUA).
Enhances elasticity, wear resistance, and weatherability.

Polyamides and Other Polymers

Monomer/building block for transparent, high-strength aliphatic polyamides with excellent chemical resistance.
Used in specialty plastics requiring clarity and durability.

Other Industrial Applications

Adhesives and sealants
Composites and electronic materials
Metalworking fluids and construction chemicals

Frequently Asked Questions (FAQs)

Q: What is the CAS number for 3,3'-Dimethyl-4,4'-diaminodicyclohexylmethane (MACM)?

A: The CAS Registry Number for MACM is 6864-37-5.

Q: What are the main uses of MACM?

A: MACM serves primarily as a curing agent for epoxy resins (especially in high-performance coatings and flooring) and as a chain extender in polyurethanes and polyureas. It is also used in the synthesis of transparent, high-performance polyamides.

Q: Is MACM suitable for clear or transparent applications?

A: Yes. Its cycloaliphatic structure provides excellent color stability and high transparency in cured epoxy and polyamide systems, making it ideal for decorative coatings and optical-grade materials.

Q: How does MACM compare to other epoxy curing agents?

A: Compared to aliphatic amines, MACM offers better chemical resistance, higher Tg, and improved UV/color stability while maintaining good reactivity and low viscosity.

Q: What safety precautions are required when handling MACM?

A: Wear full PPE including gloves, eye protection, and protective clothing. Work in ventilated areas and avoid direct skin or eye contact. It is corrosive and may cause sensitization.