| PATENT ASSIGNEE'S COUNTRY | Japan |
| UPDATE | 06.00 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
- Bringing the Ru catalyst, whose activity has decreased in the hydrogenation, into contact with O in liquid phase, wherein the catalyst is dispersed in or impregnated with a liquid - Maintaining the catalyst at H partial pressure lower than that at the hydrogenation & at T not lower than a T lower by 50C than the hydrogenation T to obtain a Ru catalyst restored in activity - Partially hydrogenating the single-ring aromatic hydrocar bon in the presence of Ru catalyst restored in activity |
| PATENT PHOTOCOPY | Available on request |
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