61.
    发明专利
    未知

    公开(公告)号:ID23663A

    公开(公告)日:2000-05-11

    申请号:ID20000387

    申请日:1998-08-21

    Applicant: BASF AG

    Abstract: Cyclic lactams are prepared by reacting aminocarbonitriles with water in the liquid phase in a fixed bed reactor in the presence of a catalyst which comprises a catalytically active oxide, which has no soluble constituents under the reaction conditions and which consists of shaped articles obtainable by shaping the oxide into shaped articles and, before or after said shaping, treating the oxide with from 0.1 to 30% by weight, based on the oxide, of an acid in which the oxide is sparingly soluble.

    65.
    发明专利
    未知

    公开(公告)号:BR9711732A

    公开(公告)日:1999-08-24

    申请号:BR9711732

    申请日:1997-09-01

    Applicant: BASF AG

    Abstract: A process for preparing aliphatic alpha,omega-amino nitrites by partial hydrogenation of aliphatic alpha,omega-dinitriles in the presence of a catalyst, wherein the catalyst used for the partial hydrogenation comprises(a) iron or a compound based on iron or mixtures thereof and(b) from 0.01 to 5% by weight, based on (a), of a promoter based on 2,3,4 or 5 elements selected from the group consisting of aluminum, silicon, zirconium, titanium and vanadium and(c) from 0 to 5% by weight, based on (a), of a compound based on an alkali metal or alkaline earth metal.

    67.
    发明专利
    未知

    公开(公告)号:TR199900164T2

    公开(公告)日:1999-04-21

    申请号:TR9900164

    申请日:1997-07-29

    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 process includes the following steps: 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 based 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, interrupting 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 DEG to 400 DEG 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.

    70.
    发明专利
    未知

    公开(公告)号:AT177346T

    公开(公告)日:1999-03-15

    申请号:AT95942679

    申请日:1995-12-16

    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.

Patent Agency Ranking