Table 1.
Polyol synthesis conditions and composition.
| Synth. | Initial molar ratio* BHPU : BA : PC |
Amount of K2CO3
(mole/BHPU mole) |
Temp. (°C) |
Reaction time (h) |
Formal molar ratio BHPU : x in product |
HN (mg KOH/g) |
Polyol sign |
|---|---|---|---|---|---|---|---|
| 1. | 1 : 2 : 6 | 0.12 | 180 | 8 | 1 : 5.6 | 622 ± 21 | PA1 |
| 2. | 1 : 2 : 12 | 0.12 | 180 | 14 | 1 : 11.1 | 540 ± 18 | PA2 |
| 3. | 1 : 2 : 18 | 0.12 | 180 | 22 | 1 : 16.2 | 469 ± 19 | PA3 |
| 4. | 1 : 2 : 6 | 0.12 | 180 | 13.25 | 1 : 5.9 | 687 ± 22 | PB1 |
| 5. | 1 : 2 : 12 | 0.12 | 180 | 17 | 1 : 10.4 | 626 ± 20 | PB2 |
| 6. | 1 : 2 : 18 | 0.12 | 180 | 20 | 1 : 15.7 | 523 ± 17 | PB3 |
| 7. | 1 : 0 : 6 | 0.12 | 160 | 17 | 1 : 5.7 | 526 ± 18 | PC1 |
| 8. | 1 : 0 : 12 | 0.12 | 160 | 22 | 1 : 11.3 | 467 ± 15 | PC2 |
| 9. | 1 : 0 : 18 | 0.12 | 160 | 32 | 1 : 16.2 | 388 ± 12 | PC3 |
x: oxypropylene unit.
*In case of syntheses 1–6 EBU was used directly.