| Share | Phrase |
|---|
| 16.52% | sulfurize ADVP etc |
| 16.12% | sulfurize ester-olefins [perform operation] |
| 13.29% | dioctylphenylamine [does] sulfurize |
| 11.89% | phenylalphanaphthylamine [does] sulfurize |
| 10.17% | sulfurize ester [perform operation] |
| 9.28% | antioxidant [does] sulfurize |
| 9.01% | phenate sulfurize |
| 7.42% | sulfurize phenate [perform operation] |
| 6.26% | sulfurize hydrocarbon [perform operation] |