Table 1.
Formulations of rigid polyurethane (PUR) foams.
| Component | Application | Amount, pbw 1 |
|---|---|---|
| Rapeseed oil/PET (RO/PET) or reference polyol | Base polyol | 75 |
| Lupranol 3422 | Crosslinking agent | 25 |
| Levagard PP | Flame retardant | 20 |
| NIAX Silicone L6915 | Surfactant | 2.0 |
| 30 wt% potassium acetate (KAc) solution in diethylene glycol | Catalyst | 1.0–1.5 2 |
| PC CAT NP-10 | Catalyst | 1.6–4.0 3 |
| Water | Blowing agent | 2.2 |
| Solkane 365/227 | Blowing agent | 16 |
1 part by weight. 2 KAc was added only in PUR formulations with isocyanate indices 150 and 180. 3 4.0 pphp were added for reference foams based on Lupranol 3300 to enhance reactivity.