| Toluene diisocyanate (TDI; 2,4- ≈80%, 2,6- ≈20%) |
Yantai Wanhua Polyurethanes Co., Ltd, China |
| Polypropylene glycol (PPG-2000) |
Sinopharm Chemical Reagent Co., Ltd, China |
| 1,4-Butanediol (BDO) |
The Third Petrochemical Factory, Tianjin Petrochemical Inc, China |
| Dibutyltin dilaurate (DBTDL) |
Yantai Wanhua Polyurethanes Co., Ltd, China |
| Toluene |
The Third Petrochemical Factory, Tianjin Petrochemical Inc, China |
| Carbonyl iron particle (type: CIP–CN) |
Produced by BASF, Germany with an average particle size of about 3 μm |
