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Modified epoxy resin formulation. EP: epoxy resin (E-44), EP-PUP: modified epoxy resin.
| Sample | Polyurethane Content (phr 1) | Amount of Epoxy Resin (phr) | Color |
|---|---|---|---|
| Neat EP | 0 | 100 | Colorless transparent |
| 10% EP-PUP | 10 | 100 | White transparent |
| 20% EP-PUP | 20 | 100 | Yellowish transparent |
| 30% EP-PUP | 30 | 100 | Yellow transparent |
1 phr: parts per hundreds of resin.
