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    Multistage oligomerization of 2-8C olefins uses a nickel-containing catalyst distributed over the zones to make maximum use of its activity
    64.
    发明专利
    Multistage oligomerization of 2-8C olefins uses a nickel-containing catalyst distributed over the zones to make maximum use of its activity 未知

    公开(公告)号：DE19922038A1

    公开(公告)日：2000-11-16

    申请号：DE19922038

    申请日：1999-05-12

    Applicant: BASF AG

    Inventor： SCHULZ RALF ,  WALTER MARC ,  NEUMANN HANS-PETER ,  BROX WOLFGANG

    IPC: C07B61/00 ,  C07C2/08 ,  C07C2/10 ,  C07C11/02

    Abstract: Oligomerization of 2-8C olefins in a sequence of \- 2 reaction zones is such that the volume of Ni-containing catalyst in each zone is set so that the difference between the temperature rises experienced by the feed in two zones is no more than 20 deg C. Oligomerization of 2-8C olefins comprises passing an olefin-containing hydrocarbon stream through a sequence of \- 2 adiabatically-operated reaction zones over a heterogeneous Ni-containing catalyst so that the stream experiences a temperature increase delta Treact in each zone and such that the stream enters the first zone at Tin and, prior to entering each subsequent zone, is cooled to Tin +/- 20 deg C. The relative catalyst volume in each zone is such that the difference in delta Treact between two zones is at most 20 deg C. An Independent claim is also included for a process comprising: (i) passing the olefin-containing hydrocarbon stream over a first zone over a heterogeneous Ni-containing catalyst; (ii) separating off the oligomers formed and dividing the hydrocarbon stream into two sub-streams (Ia) and (Ib); (iii) recycling sub-stream (Ia) to the first zone and passing (Ib) to a second zone containing the catalyst; (iv) separating off the oligomers from the product of the second zone and dividing the stream into sub-streams (IIa) and (IIb); and (v) recycling (IIa) to the second zone and taking (IIb) out of the process, the ratios (Ia)/(Ib) and (IIa)/(IIb) being such that the oligomer concentration in the reaction mixture does not exceed 30 wt.% in any zone.

    Mixture of adipic or phthalic acid diesters and isomeric nonanols
    65.
    发明专利
    Mixture of adipic or phthalic acid diesters and isomeric nonanols 未知

    公开(公告)号：AU1387200A

    公开(公告)日：2000-11-02

    申请号：AU1387200

    申请日：1999-11-26

    Applicant: BASF AG

    Inventor： THIL LUCIEN ,  BREITSCHEIDEL BORIS ,  DISTELDORF WALTER ,  ZELLER EDGAR ,  WALTER MARC ,  MORSBACH BERND ,  DORNIK KNUT

    IPC: C07B61/00 ,  C07C29/14 ,  C07C31/125 ,  C07C67/08 ,  C07C69/44 ,  C07C69/80 ,  C08K5/05 ,  C08K5/10 ,  C08K5/11 ,  C08K5/12 ,  C08L27/06

    Abstract: The mixture described is a mixture of isomeric nonanol diesters of a dicarboxylic acid, selected from the class consisting of a mixture of diesters of adipic acid in the 1H NMR spectrum of which, observed in CDCl3, the ratio of the area under the resonance signals at chemical shifts in the range from 1.0 to 2.0 ppm with respect to TMS to the area under the resonance signals at chemical shifts in the range from 0.5 to 1.0 ppm with respect to TMS is from 1.20 to 5.00 and a mixture of diesters of phthalic acid, in the 1H NMR spectrum of which, observed in CDCl3, the ratio of the area under the resonance signals at chemical shifts in the range from 1.1 to 3.0 ppm with respect to TMS to the area under the resonance signals at chemical shifts in the range from 0.5 to 1.1 ppm with respect to TMS is from 1.00 to 4.00.The diesters of adipic and phthalic acid are suitable as plasticizers for PVC-based molding compositions and have high compatibility, a low cold crack temperature, low torsional rigidity and/or high thermal stability.

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