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    • 45. 发明公开
    • Process for the hydrogenation of compounds with an olefinic unsaturation
    • Verfahren zur Hydrierung von Verbindungen mitfinsischerUngesättigkeit。
    • EP0545844A1
    • 1993-06-09
    • EP92500162.0
    • 1992-12-04
    • REPSOL QUIMICA S.A.
    • Barrio Calle, JuanParellada Ferrer, Maria DoloresCuenca Agreda, TomasFlores Serrano, Juan CarlosRoyo Gracia, Pascual
    • C07C5/03C08F8/04C08C19/02
    • C08C19/02C07C5/03C07C2531/22C08F8/04Y10S526/943
    • Procedure of olefin hydrogenation in liquid phase in the presence of homogeneous catalysts that contain, as essential component,a titanocene of general formula Cp ¥ CpTiR₂, Cp^CpTiR₂, Cp^Cp [CpTiR₂]₂, or Cp^Cp[Cp ¥ TiR₂]₂ where Cp ¥ is a pentamethylcyclopentadienyl, Cp cyclopentadienyl, Cp^Cp are two cyclopentadienyl rings linked together by a dimethylsililene (Me₂Si), and R is an alyl, aryl, alkylaryl, or alcoxide group containing between 1 and 20 carbon atoms or a halogen atom, a PPh₂, CH₂SiMe₃, CH₂PPh₂, or H.
      These catalysts are very active in the hydrogenation of linear and branched, internal and external olefins, cycloolefins and diolefins. In addition, they are able to selectively hydrogenate double bonds of diene groups in conjugated diene polymers and copolymers, of medium molecular weight between approximately 500 and 1,000,000 and, in particular, the random copolymers and styrene and butadiene or isoprene block copolymers, containing the latter at least one styrene block and a polybutadiene and/or isoprene block.
    • 在均相催化剂的存在下,在含有通式Cp CpTiR2,Cp& CpTiR2,Cp& Cp [CpTiR2] 2或Cp& Cp&Cp [Cp]的二茂钛的均相催化剂的存在下, YEN> TiR 2] 2其中Cp 是五甲基环戊二烯基,Cp环戊二烯基,Cp& C p是通过二甲基硅烷(Me 2 Si)连接在一起的两个环戊二烯基环,R是含有1和1之间的烯丙基,芳基,烷基芳基或烷氧基 20个碳原子或一个卤素原子,一个PPh 2,CH 2 SiMe 3,CH 2 PPh 2或H.这些催化剂在直链和支链,内部和外部烯烃,环烯烃和二烯烃的氢化中非常有活性。 此外,它们能够选择性地氢化共轭二烯聚合物和共聚物中的二烯基团的双键,其中等分子量在约500和1,000,000之间,特别是含有后者的无规共聚物和苯乙烯和丁二烯或异戊二烯嵌段共聚物 至少一个苯乙烯嵌段和聚丁二烯和/或异戊二烯嵌段。