Polyurethanes (PU) are made by reacting an isocyanate with a polyol. By changing the ingredients, manufacturers can produce anything from rigid insulation foam to soft cushioning, coatings, adhesives and tough elastomers.
NAB CHEM supplies two key PU raw materials: WANNATE® PM-200, a polymeric MDI from Wanhua Chemical, and 1,4-Butanediol (BDO), a diol widely used as a chain extender in PU elastomers and thermoplastic polyurethane (TPU). Tell us your application and required quantity, and our team will confirm availability and send a quote.
Polymeric MDI · Wanhua Chemical
NCO content 30.5–32.0 %
Good flowability for rigid foam systems
BDO
Chain extender for PU elastomers and TPU
Specifications on request
| Property | Typical value |
|---|---|
| Appearance | Brown liquid |
| Functionality | about 2.6–2.7 |
| NCO content | 30.5–32.0 % |
| Viscosity at 25 °C | 150–250 mPa·s |
| Density at 25 °C | 1.220–1.250 g/cm³ |
| Acidity | ≤ 0.030 % |
| Hydrolysable chlorine | ≤ 0.20 % |
| Packaging | 250 kg steel drums (210 L) or bulk |
| Storage | Dry, sealed containers at 15–35 °C; protect from frost and moisture |
| Shelf life | 12 months from production date |
Rigid PU and isocyanurate foam for thermal insulation.
Paints and adhesives based on polyurethane chemistry.
Bumpers, interior parts, integral skin foam and structural foam.
High-resilience foam and synthetic wood.