Hydrogenation process for hydrocarbon resins

• Main Authors: Haluska, Jerry L, Riley, Kenneth Lloyd
• Format: Patent
• Language: English
• Published: 29.06.2004

This invention relates to a catalytic hydrotreating process useful for hydrocarbon resin and rosin feeds. In particular the invention relates to an improved process for hydrotreating such resins and rosins with hydrogenation metal catalyst compounds having sulfided nickel molybdotungstate catalysts. This invention provides a process for hydrotreating hydrocarbon resins, which process comprises contacting a feedstock comprising a hydrocarbon resin or rosin, under suitable hydrotreating conditions, with a bulk multimetallic catalyst comprised of at least one Group VIII non-noble metal and at least two Group VIB metals and wherein the ratio of Group VIB metal to Group VIII non-noble metal is from about 10:1 to about 1:10. The process according to the invention can achieve increased hydrocarbon resin productivity through increase in throughput volumes and effective catalyst lifetimes. The process of the invention is desirably practiced with a bulk catalyst consisting of only the combination of the metal species with the active metal components. The absence of carrier substrates largely removes the possibility of halogen accumulation on substrate surfaces that, in turn, can acidify metal catalysts such that additional, progressive cracking of the hydrocarbon resin molecules occurs.