| Answer | Crossword Clue |
|---|---|
| BUTENE | Compound in synthetic rubber |
| BUTENE | Compound found in synthetic rubber |
| STYRENE | Compound used in synthetic rubber |
| STYRENE | Ingredient in synthetic rubber |
| BUTADIENE | Substance used in synthetic rubber. |
| ISOPRENE | Liquid in synthetic rubber manufacture |
| BUTYL | Synthetic rubber used in footballs |
| BUTYL | Synthetic rubber used in inner tubes |
