MOCA 4,4′-Methylenebis(2-chloroaniline) CAS 101-14-4

Short Description:

Chemical Name: 4,4′-Methylenebis(2-chloroaniline)

Trade Name: MOCA

CAS No.: 101-14-4


Product Detail

Product Tags

Product Description

4,4' - Methylenebis (2-chloroaniline), also called MOCA, is a substance used as a crosslinking agent / chain extender for polyurethane products, especially for cast polyurethane elastomers (CPU).  Polyurethane elastomers are flexible and posse elasticity nature like rubber but with significant properties, it combines high elasticity of rubber and rigidity of plastic.   MOCA features with color stability in high temperature.  MOCA-base elastomers are good for abrasion / impact / chemical / oil / ozone and cold resistance, elasticity no matter with high or low hardness (Shore A to Shore D rating), high tensile / tear / compression strength, and absorption of vibration.  With the long pot life, it’s very easy to handle with, you can even handle manually instead of by machines.  Resulting from those physical properties and advantages, MOCA is the most common crosslinking / chain extender for urethane elastomers (TDI system).  Meanwhile, it’s also a universal curing agent for Epoxy products.  

Product properties & Features

Comparing to DETDA & DMTDA, there are some obvious advantages of MOCA as follows.

1. The finished product is lighter in color.

2. MOCA is solid type, thus, it's much easier to store and less pollution.

3. Easy to handle. Long pot life.

4. Modulus is higher.

5. Lower price.


MOCA is a well-known aromatic diamine chain extender or curing agent for casting polyurethane (PU) elastomers. MOCA-base elastomers have excellent properties, are widely used in various areas including construction, building, vehicles, mining, semi-conductor, epoxy, sport facility and so on.

1. Bridging agent for electronic industry.

2. Waterproof material / coating for construction & architectural industry.

3. Chain extender for PU elastomers, i.e. jaw rubber coupling, PU spider.

4. Curing agent for epoxy resin.

5. Components for industrial usage, i.e. conveyor belts, casters, guide rollers, couplings.

6. Shock absorption pads for automotive industry.

7. Printing rollers, drum blades, squeegee blades, cleaning blades, scraper blades for printing industry.

8. Sealing material.

9. Epoxy insulation material.

10. Antibacterial urethane sheet.

11. Mineral separation screen.

12. Pipe linings.

Packing & Storage

Packing: 25 kg/fiber drum 200 kg/fiber drum

Slight moisture absorption; avoid contacting with water. Keep away from sunlight.





Granular (100% through 1/2-mesh sieve)


Milky white or Light yellow


Slight amine

Amine value

7.4~7.6 (m.molc/g)

Specific weight

1.44 (solid) at 24℃

Specific weight

1.26 (liquid) at 107℃

Melting range


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