中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

237 records (took 0.027 seconds)

    PROCESS FOR THE PREPARATION OF PROPYLENE OXIDE
    24.
    发明专利
    PROCESS FOR THE PREPARATION OF PROPYLENE OXIDE 未知

    公开(公告)号：CA2453988A1

    公开(公告)日：2003-01-30

    申请号：CA2453988

    申请日：2002-07-18

    Applicant: BASF AG

    Inventor： BERG ANNE ,  BASSLER PETER ,  RIEBER NORBERT ,  TELES JOAQUIM HENRIQUE ,  REHFINGER ALWIN ,  RUDOLF PETER

    IPC: C07D301/12

    Abstract: The invention relates to a method for producing propylene oxide, comprising at least the following steps: (a) propene is reacted with a hydroperoxide in a solvent in the presence of a zeolite catalyst, in order to obtain a mixture (G0), said mixture (G0) containing propylene oxide, solvent, non-reacted propene, non-reacted hydroperoxide and oxygen; (b) the propylene oxide is separated from the mixture (G0) in such a way that a mixture (G1) is obtaine d which comprises non-reacted propene and oxygen; (c) the mixture (G1) is brought into contact with a liquid medium containing at least solvent, in order to obtain the mixtures (G2) and (G3), said mixture (G3) containing a part of the non-reacted propene and oxygen, and said mixture (G2) containing the solvent and the rest of the propene, the separated mixture (G3) of non- reacted propene and oxygen having a ratio of oxygen to propene which renders the mixture (G3) non-inflammable, and the mixture (G2) supplying at least on e reaction between the propene and the hydroperoxide.

    METHOD FOR THE PREPARATION OF ALIPHATIC ALPHA, OMEGA-AMINONITRILES
    27.
    发明专利
    METHOD FOR THE PREPARATION OF ALIPHATIC ALPHA, OMEGA-AMINONITRILES 未知

    公开(公告)号：BG63299B1

    公开(公告)日：2001-09-28

    申请号：BG10163197

    申请日：1997-06-17

    Applicant: BASF AG

    Inventor： MELDER JOHANN-PETER ,  SCHNURR WERNER ,  FLICK KLEMENS ,  EBEL KLAUS ,  WITZEL TOM ,  FISCHER ROLF ,  HARDER WOLFGANG ,  REHFINGER ALWIN

    IPC: B01J23/89 ,  B01J23/76 ,  B01J23/889 ,  B01J27/18 ,  B01J37/02 ,  C07B61/00 ,  C07C253/30 ,  C07C255/24

    Abstract: The invention relates to the preparation of aliphatic -aminonitriles by partial hydrogenation of aliphatic dinitriles at elevated temperature and higher pressure, in the presence of a solvent and catalyst. Catalyst, containing the following is used: (a) compound based on metal, e.g. nickel, cobalt, iron, ruthenium and rhodium; (b) from 0.01 to 25 wt.% promotor to component (a) based on metal such as palladium, platinum, iridium, osmium, copper, silver, gold, chromium, molybdenum, tungsten, manganese, rhenium, zinc, cadmium, lead, aluminium, tin, phosphorus, arsenic, antimony, bismith, silicon, titanium, zirconium and the rare earth elements, and (c) from 0 to 5 wt.% compound to component (a) based on alkali or alkaliearth metal, provided that component (a) is different from an iron-based compound or from iron, as well as from the metals cobalt, ruthenium or rhodium when component (b) is promotor based on a metal from the group containing titanium, managanese, chromium and molybdenum. An additional condition is that when component (a) is a compound based on ruthenium or rhodium separately, or of ruthenium and rhodium, or of nickel and rhodium, promotor (b) can optionally be dropped. 8 claims

    28.
    发明专利
    未知

    公开(公告)号：ES2156401T3

    公开(公告)日：2001-06-16

    申请号：ES97941948

    申请日：1997-08-21

    Applicant: BASF AG

    Inventor： VOIT GUIDO ,  FLICK KLEMENS ,  LUYKEN HERMANN ,  REHFINGER ALWIN ,  BASSLER PETER

    IPC: B01J23/78 ,  C07B61/00 ,  C07C209/48 ,  C07C211/12 ,  C07C253/30 ,  C07C255/24

    Abstract: PCT No. PCT/EP97/04542 Sec. 371 Date Mar. 10, 1999 Sec. 102(e) Date Mar. 10, 1999 PCT Filed Aug. 21, 1997 PCT Pub. No. WO98/11051 PCT Pub. Date Mar. 19, 1998A process for coproduction of 6-aminocapronitrile and hexamethylenediamine starting from a mixture comprising a phosphorus-containing compound and essentially adiponitrile and obtained by reaction of butadiene with hydrocyanic acid in the presence of a catalyst comprising a phosphorus-containing compound comprises (1) reducing the weight proportion of phosphorus-containing compound, calculated as phosphorus, in the mixture, (2) partially hydrogenating the resulting mixture in the presence of a catalyst to form an alpha , omega -aminonitrile, and (3) removing 6-aminocapronitrile and hexamethylenediamine from the mixture.

    29.
    发明专利
    未知

    公开(公告)号：BR9913250A

    公开(公告)日：2001-05-22

    申请号：BR9913250

    申请日：1999-08-17

    Applicant: BASF AG

    Inventor： LUYKEN HERMANN ,  OHLBACH FRANK ,  ANSMANN ANDREAS ,  BASSLER PETER ,  FISCHER ROLF ,  MELDER JOHANN-PETER ,  MERGER MARTIN ,  REHFINGER ALWIN ,  VOIT GUIDO ,  ACHHAMMER G NTHER

    IPC: C07B61/00 ,  C07C209/48 ,  C07C209/84 ,  C07C211/12 ,  C07C253/30 ,  C07C253/34 ,  C07C255/24

    Abstract: A process for the coproduction of 6-aminocapronitrile and hexamethylenediamine starting from adiponitrile bya) hydrogenating adiponitrile in the presence of a catalyst comprising an element of the eighth transition group as catalytically active component, to obtain a mixture comprising 6-aminocapronitrile, hexamethylenediamine, adiponitrile and high boilers,b) distillatively removing hexamethylenediamine from the mixture comprising 6-aminocapronitrile, hexamethylenediamine, adiponitrile and high boilers, and eithercl) distillatively removing 6-aminocapronitrile, and thend1) distillatively removing adiponitrile, orc2) simultaneously distillatively removing 6-aminocapronitrile and adiponitrile into separate fractionsis characterized by base of column temperatures below 185° C. in steps d1) or c2).

Patent Agency Ranking