| Sample | Hardness (JIS A) | Swelling rate (%) |
| HDI-PUE0 | 87 | 110 |
| HDI-PUE1 | 82 | 111 |
| HDI-PUE2 | 83 | 127 |
| HDI-PUE3 | 82 | 143 |
| HDI-PUE5 | 78 | 159 |
| MDI-PUE0 | 80 | nearly soluble |
| MDI-PUE1 | 78 | 283 |
| MDI-PUE2 | 83 | 312 |
| MDI-PUE3 | 83 | 407 |
| MDI-PUE5 | 89 | 417 |
| IPDI-PUE0 | 62 | soluble |
| IPDI-PUE1 | 66 | 243 |
| IPDI-PUE2 | 66 | 230 |
| IPDI-PUE3 | 67 | 216 |
| IPDI-PUE5 | 67 | 211 |