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    14.
    发明专利
    未知

    公开(公告)号：DE59301918D1

    公开(公告)日：1996-04-18

    申请号：DE59301918

    申请日：1993-11-05

    Applicant: BASF AG

    Inventor： POEPEL WOLFGANG ,  TREMMEL GREGOR ,  BUECHELE WOLFGANG ,  DEIMLING AXEL ,  PETERSEN HERMANN

    IPC: B01J23/78 ,  B01J23/85 ,  B01J23/92 ,  B01J23/94 ,  B01J37/00 ,  B01J38/00 ,  B01J38/68 ,  C07C5/32

    Abstract: PCT No. PCT/EP93/03083 Sec. 371 Date Feb. 13, 1995 Sec. 102(e) Date Feb. 13, 1995 PCT Filed Nov. 5, 1993 PCT Pub. No. WO94/11104 PCT Pub. Date May 26, 1994A process for the preparation of iron-, potassium- and cerium-containing catalysts for the dehydrogenation of hydrocarbons from the same spent catalysts (regeneration) by grinding and, if necessary, purifying the spent material, restoring the original activity by adjusting the composition and restoring the external shape comprises adding to the ground material an effective amount of potassium and such an amount of cerium that the total amount of cerium is greater than the amount originally present.

    16.
    发明专利
    未知

    公开(公告)号：ES2207956T3

    公开(公告)日：2004-06-01

    申请号：ES99934213

    申请日：1999-01-26

    Applicant: BASF AG

    Inventor： FISCHER WOLFGANG ,  BUCHNER EUGEN-WALTER ,  DEIMLING AXEL ,  GAUSEPOHL HERMANN ,  SCHADE CHRISTIAN

    IPC: C08F2/00 ,  C08F279/02 ,  C08F287/00 ,  B01J19/18

    Abstract: A process for preparing impact-modified styrene polymers (HIPS) omprises anionic polymerization of styrene in the presence of a rubber in one or more polymerization reactors in succession. The rubber is prepared in solution in an immediately upstream process. The heat of polymerization is utilized to remove the solvent for the rubber, this solvent having a boiling point lower than those of styrene and ethylbenzene, from at least one of the polymerization reactors via distillation with distillative cooling, and the solvent is reintroduced into the process of rubber preparation.

    17.
    发明专利
    未知

    公开(公告)号：DE59507974D1

    公开(公告)日：2000-04-13

    申请号：DE59507974

    申请日：1995-12-12

    Applicant: BASF AG

    Inventor： POEPEL JUERGEN ,  HAGEMEYER ALFRED ,  BUECHELE WOLFGANG ,  DEIMLING AXEL ,  HOFFMANN WOLFGANG

    IPC: B01J23/648 ,  C07C5/42 ,  C07C15/46

    Abstract: PCT No. PCT/EP95/04895 Sec. 371 Date Jun. 18, 1997 Sec. 102(e) Date Jun. 18, 1997 PCT Filed Dec. 12, 1995 PCT Pub. No. WO96/20149 PCT Pub. Date Jul. 4, 1996In a process for preparing olefinically unsaturated compounds such as styrene by oxidative dehydrogenation of corresponding hydrocarbons using a previously oxidized oxygen transferer acting as catalyst in the absence of molecular oxygen and reoxidation of the oxygen transferer in at least two reactors, the dehydrogenation and regeneration takes place alternately in time in the two reactors and the reactors are connected to one another in terms of heat via heat exchangers and a common circuit for heat transfer medium.

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