Hydrogenation process of olefin polymers for producing white oils

US4101599A · kind A · utility

Assignee

• Labofina, S.A. · BE

Inventors

• Guy F. S. Debande · Brussels, BE
• Raymond N. M. Cahen · Etterbeek, BE
• Jacques Grootjans · Leefdaal, BE

Key dates

• Filing date: Mar 15, 1977
• Grant date: Jul 18, 1978
• Expiry date: Mar 15, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F8/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for hydrogenating polymers which are derived from olefin units containing 4 carbon atoms is disclosed whereby white oils which exhibit a low iodine value (e.g., below 0.26) are obtained under relatively mild reaction conditions. The hydrogenation is effected in the presence of a catalyst comprising palladium on a bimodal alumina support ehibiting a total pore volume of at least 0.25 ml/g of which 35 to 50% are provided by small pores the mean size of which is below 300A and 25 to 35% are provided by large pores the mean size of which is above 300A and is at least 1.5 times the mean size of the small pores.