Polyurethane Prepolymer (MDI-Based, NCO-Terminated)
CAS Number: 9016-87-9
MDI-based NCO-terminated polyurethane prepolymer is a versatile building block for one- and two-component polyurethane adhesives, sealants, and elastomers. It reacts with moisture, polyols, or amines to form tough, flexible bonds with excellent dynamic fatigue resistance. The controlled NCO content and low free MDI content make it suitable for demanding structural and elastic bonding applications in automotive, construction, and footwear industries.
Technical Specifications
| moisture | ≤0.05% |
| viscosity | 5,000–50,000 mPa·s (25 °C) |
| NCOcontent | 2.0–15.0% (grade dependent) |
| appearance | Pale yellow to amber viscous liquid |
| freeMDIcontent | ≤0.1% |
Applications
- One-component moisture-curing adhesives and sealants
- Two-component PU structural adhesives
- Automotive glass bonding (direct glazing)
- Flexible packaging and laminating adhesives
- Footwear sole bonding
Key Features
- Broad range of NCO contents for flexible formulation
- Low free MDI content for improved safety profile
- Excellent elongation and dynamic fatigue resistance
- Compatible with polyols, amines, and moisture cure
Send Inquiry
CAS Number
9016-87-9
Category
Adhesive / Sealant AdditivesAvailability
In StockSample
Dispatched within 5 days
More in Adhesive / Sealant Additives
Acrylic Pressure Sensitive Adhesive
9003-01-4
Anaerobic Adhesive Monomer
868-77-9
BDMA (Benzyldimethylamine) Epoxy Accelerator
103-83-3
Bisphenol F Epoxy Resin (DGEBF)
28064-14-4
Butyl Glycidyl Ether (BGE) Reactive Diluent
2426-08-6
C12–C14 Alkyl Glycidyl Ether Reactive Diluent
68609-97-2
C5 Aliphatic Hydrocarbon Tackifier Resin
68131-77-1
C9 Aromatic Hydrocarbon Tackifier Resin
64742-16-1