PROCESS FOR PREPARING ALIPHATIC ALPHA,OMEGA-AMINONITRILES

    公开(公告)号:HU223965B1

    公开(公告)日:2005-03-29

    申请号:HU9702137

    申请日:1995-12-16

    Applicant: BASF AG

    Abstract: Aliphatic alpha,omega-aminonitriles are prepared by partial hydrogenation of aliphatic alpha,omega-dinitriles at elevated temperatures and superatmospheric pressure in the presence of a solvent and of a catalyst by a process which comprises using a catalyst which (a) contains a compound based on a metal selected from the group consisting of nickel, cobalt, iron, ruthenium and rhodium and (b) contains from 0.01 to 25% by weight, based on (a), of a promoter based on a metal selected from the group consisting of palladium, platinum, iridium, osmium, copper, silver, gold, chromium, molybdenum, tungsten, manganese, rhenium, zinc, cadmium, lead, aluminum, tin, phosphorus, arsenic, antimony, bismuth and rare earth metals and (c) from 0 to 5% by weight, based on (a), of a compound based on an alkali metal or on an alkaline earth metal. with the proviso that the component (a) is not based on iron or iron and one of the metals selected from the group consisting of cobalt, ruthenium and rhodium when (b) is a promoter based on a metal selected from the group consisting of titanium, manganese, chromium and molybdenum, and with the further proviso that, when a compound based on only ruthenium or rhodium or ruthenium and rhodium or nickel and rhodium is selected as component (a), the promoter (b) may be dispensed with.

    COPRODUCTION OF 6-AMINOCAPRONITRILE AND HEXAMETHYLENEDIAMINE

    公开(公告)号:CA2251539C

    公开(公告)日:2004-09-07

    申请号:CA2251539

    申请日:1997-04-04

    Applicant: BASF AG

    Abstract: The invention concerns a method of simultaneously producing 6- aminocapronitrile (ACN) and hexamethylenediamine (HMD) by reacting adipodinitrile (ADN) with hydrogen in the presence of a catalyst containing nickel, at a temperature not below room temperature and at an elevated hydrogen partial pressure, optionally in the presence of a solvent. If the yield, based on the amount of ADN consumed, and/or the selectivity, based on the amount of ACN produced, drop(s) below a defined value, a) the reaction of ADN with hydrogen is interrupted by stopping the feed of ADN and, if present, also the solvent; b ) the catalyst is treated with hydrogen at a temperature in the range 150 to 400 .degree.C, using a hydrogen pressure of 0.1 to 30 MPa and a treatment time of 2 to 48 h; and c) the hydrogenation is subsequently continued using the catalyst treated in stage (b).

    METHOD OF PRODUCING AMINES AND AMINONITRILES

    公开(公告)号:MY117849A

    公开(公告)日:2004-08-30

    申请号:MYPI9701383

    申请日:1997-03-31

    Applicant: BASF AG

    Abstract: A PROCESS FOR PREPARING AN NH2-CONTAINING COMPOUND BY HYDROGENATING A COMPOUND CONTAINING AT LEAST ONE UNSATURATED CARBON-NITROGEN BOND WITH HYDROGEN IN THE PRESENCE OF A CATALYST AT TEMPERATURES NOT BELOW ROOM TEMPERATURE AND ELEVATED HYDROGEN PARTIAL PRESSURE IN THE PRESENCE OR ABSENCE OF A SOLVENT WHICH COMPRISES A)USING A CATALYST COMPRISING A COBALT- AND/OR IRON-CONTAINING CATALYST, AND B)AFTER THE CONVERSION BASED ON THE COMPOUND TO BE HYDROGENATED AND/OR THE SELECTIVITY ON THE DESIRED PRODUCT HAS OR HAVE DROPPED BELOW A DEFINED VALUE OR THE AMOUNT OF AN UNWANTED BY-PRODUCT HAS RISEN BEYOND A DEFINED VALUE, INTERUPTING THE HYDROGENATION BY STOPPING THE FEED OF THE COMPOUND TO BE HYDROGENATED AND OF THE SOLVENT, IF USED, C)TREATING THE CATALYST AT FROM 150 TO 400°C WITH HYDROGEN USING A HYDROGEN PRESSURE WITHIN THE RANGE FROM 0.1 TO 30 MPA AND A TREATMENT TIME WITHIN THE RANGE FROM 2 TO 48 H, AND D)SUBSEQUENTLY CONTINUING THE HYDROGENATION OF THE COMPOUND CONTAINING AT LEAST ONE UNSATURATED CARBON-NITROGEN BOND.

    METHOD FOR CAPROLACTAM PREPARATION
    98.
    发明专利

    公开(公告)号:BG64093B1

    公开(公告)日:2003-12-31

    申请号:BG10203897

    申请日:1997-11-12

    Applicant: BASF AG

    Abstract: The method occurs by reaction between 6-aminocapronitrile and water in the presence of a catalyst, making use of an initial mixture of 6-aminocapronitrile and tetrahydroazepine derivative with the formula The reaction occurs in liquid phase in the presence of heterogeneous catalysts. The invention also relates to a method for the preparation of tetrahydroazepine derivative with the above-mentioned formula and to its use for the preparation of caprolactam and polycaprolactam. 6 claims

    99.
    发明专利
    未知

    公开(公告)号:NO315550B1

    公开(公告)日:2003-09-22

    申请号:NO972998

    申请日:1997-06-26

    Applicant: BASF AG

    Abstract: A hydrogenation catalyst based on an alloy of aluminum and of a transition metal is prepared by preparing a kneaded material from the alloy and an assistant, converting the kneaded material into moldings, calcining the moldings and treating the calcined moldings with an alkali metal hydroxide, by a process in which the assistant used is (a) polyvinyl alcohol and water or (b) stearic acid, and the catalyst prepared according to the invention is used for hydrogenation and hydrogenolysis, in particular the partial hydrogenation of aliphatic alpha,omega-dinitriles to aliphatic alpha,omega-aminonitriles.

    100.
    发明专利
    未知

    公开(公告)号:DE59610304D1

    公开(公告)日:2003-05-08

    申请号:DE59610304

    申请日:1996-05-07

    Applicant: BASF AG

    Abstract: A process for preparing caprolactam by reacting 6-aminocapronitrile with water in the presence of catalysts comprises using a starting mixture of 6-aminocapronitrile and the tetrahydroazepine derivative of the formulaand conducting the reaction in liquid phase in the presence of a heterogeneous catalyst. Also describes a process for preparing said tetrahydroazepine derivative I and its use for preparing caprolactam and polycaprolactam.

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