PU Curing Agent
CAS 101-14-4 · C13H12Cl2N2 · HS 2921.59
Polyurethane curing agents are crosslinkers or chain extenders that react with isocyanate-terminated prepolymers to build the final polyurethane network. This entry covers MOCA (4,4-methylenebis(2-chloroaniline), CAS 101-14-4), the long-standing diamine curative for cast polyurethane elastomers, wheels, rollers, seals and industrial tyres. MOCA gives excellent tensile strength, abrasion resistance and resilience, and its amine value and moisture content must be tightly controlled because it drives pot life. Alternative curing-agent chemistries used in the same application space include isocyanate adducts and trimers based on TDI, HDI and IPDI for coatings and adhesives, plus blocked isocyanates for one-component systems.
Application scenarios
- Cast polyurethane elastomers and wheels
- Industrial rollers, seals and screens
- Two-component PU coatings and adhesives
- Potting and encapsulation compounds
- Mining and material-handling screens
- High-abrasion industrial parts
Typical specifications
| CAS Number | 101-14-4 |
|---|---|
| Molecular Formula | C13H12Cl2N2 |
| Chemistry | Diamine curative (MOCA) / isocyanate adducts |
| Amine Value | Report per batch COA |
| Melting Point | Approx. 98 - 102 °C |
| Moisture | ≤ 0.10% |
| HS Code | 2921.59 |
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Suppliers of PU Curing Agent
1 qualifiedYantai, Shandong, China · Est. 2006
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