MOCA (Polyurethane Curing Agent)
- Description
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Description
What is MOCA (Polyurethane Curing Agent)?
MOCA, or 4,4′-Methylene Bis(2-Chloroaniline), is an aromatic diamine widely used as a curing agent or hardener in the polyurethane industry. This light yellow or tan-colored granular material plays a critical role in cross-linking prepolymers to produce tough, durable polyurethane elastomers. These elastomers are valued for their mechanical strength, abrasion resistance, and elasticity across various industrial applications.
Chemex Chemicals is a trusted Importer, Distributor & Supplier of MOCA in India, offering premium-quality material with guaranteed specifications and safe packaging.

Technical Specifications of MOCA (Polyurethane Curing Agent)
Chemical Name: 4,4′-Methylene-bis-(ortho-chloroaniline)
CAS No.: 101-14-4
Appearance: Light yellow lentil-shaped granules
Purity: Minimum 99%
Melting Point: 98°C – 102°C
Moisture Content: < 0.30%
Odour: Slightly amine-like
Solid Density @ 24°C: 1.44 g/cm³
Liquid Density @ 107°C: 1.26 g/cm³
Amine Value: 7.4 – 7.6 mmol/g
Color (Gardner Scale): < 4
Free Aniline: < 1.00%
Water Absorption: None
Insoluble Matter in Acetone: < 0.04%

Key Applications of MOCA (Polyurethane Curing Agent)
This Polyurethane Curing Agent is essential in the manufacture of cast polyurethane products due to its excellent curing characteristics. It is used across multiple sectors for producing highly durable, wear-resistant parts.
Rollers & Printing Rollers – Used in printing and textile industries for high-load resistance and longevity.
Wheels & Trolley Wheels – Provides high mechanical strength for industrial and transport wheels.
Shock Absorption Pads & Suspension Mounts – Ideal for dampening vibrations in automotive and machinery components.
Skate Wheels & Pedal Wheels – Used in sports equipment for durability and rebound properties.
Concrete Moulds & Pipe Linings – PU Curing with this product is perfect for harsh environments in construction and fluid handling.
Bushes, Gears, and Oil Seals – Delivers excellent wear resistance and mechanical integrity in rotating parts.
Scraper Blades & Mineral Separation Screens – Used in mining and material separation industries.
Features & Benefits
High Mechanical Strength – Offers excellent load-bearing and impact resistance.
Superior Abrasion Resistance – Perfect for components exposed to high friction and wear.
Long Service Life – Enhances durability and reduces maintenance frequency.
Precise Curing Performance – Reacts efficiently with prepolymers for consistent results.
Excellent Thermal Stability – Stable performance in high-temperature environments.
Moisture & Water Resistant – Minimal water absorption ensures longevity in humid conditions.
Why Choose Chemex Chemicals?
Trusted Distributor in India – Authorized and reputed supplier of specialty chemicals nationwide.
Safe & Reliable Packaging – Supplied in 50 Kg cardboard barrels lined with black plastic for protection.
Quality Assurance – Guaranteed specifications and purity levels with detailed COA/MSDS support.
Pan-India Delivery – Fast shipping and logistics support across all major industrial hubs.
Expert Technical Support – Backed by a knowledgeable team to guide product usage and storage.
Packaging & Storage Information
Form: Lentil-shaped granules
Packaging: 50 Kg Cardboard Barrels with inner black plastic lining
Storage Conditions: Keep in original packaging, away from light and moisture. Store in a dark, dry environment to maintain product integrity.













Rakesh –
Best manufacturer of moca (polyurethane curing agent) in India.
Preetesh –
Supported me with MOCA for 50 Kgs trial run in our facility. Additionally, helped with mixing ratio of PU to MOCA chemical for building PU wheels on steel rims. Thank you for your assistance.
Bhavik –
Regularly buying MOCA with PU, Best Pricing & Quality.