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    2.
    发明专利
    未知

    公开(公告)号：DE3009489A1

    公开(公告)日：1981-09-17

    申请号：DE3009489

    申请日：1980-03-12

    Applicant: BAYER AG

    Inventor： BECKER ROBERT DR ,  RASP CHRISTIAN DR ,  STAMMANN GUENTER DR ,  GROLIG JOHANN DR

    IPC: C07C269/00 ,  B01J23/89 ,  B01J27/00 ,  B01J27/06 ,  B01J27/10 ,  B01J31/00 ,  B01J31/28 ,  B01J31/30 ,  B01J31/34 ,  C07B61/00 ,  C07C67/00 ,  C07C239/00 ,  C07C271/26 ,  C07C271/28 ,  C07C125/04

    Abstract: A urethane is produced by reacting an organic nitro compound with carbon monoxide and an organic compound containing at least one hydroxyl group in the presence of a catalyst and a co-catalyst. This reaction is conducted in the liquid phase at elevated temperature and pressure. The catalyst employed is an element and/or compound of an element from the group of noble metals of the 8th Secondary Group of the Periodic Table. The co-catalyst used is formed from (1) a component taken from the group consisting of iron oxychloride, a mixture of iron compounds containing iron oxychloride and oxide-chloride combinations and (2) metallic iron or an iron alloy in finely divided or high surface form. The oxides which may be used in the oxide-chloride combinations of co-catalyst component (1) are the oxides and/or oxide hydrates of tetravalent tin, trivalent chromium, hexavalent molybdenum, hexavalent tungsten, pentavalent vanadium, divalent iron and trivalent iron. The chlorides which may be used in this oxide-chloride combination are chlorides of the elements of Groups IIIA, IVA, VA and IB to VIIIB of the Periodic Table and/or hydrochlorides of tertiary amines.

    PROCESS FOR PREPARING URETHANES
    6.
    发明专利
    PROCESS FOR PREPARING URETHANES 未知

    公开(公告)号：DE3060032D1

    公开(公告)日：1981-12-24

    申请号：DE3060032

    申请日：1980-02-21

    Applicant: BAYER AG

    Inventor： BECKER ROBERT DR ,  GROLIG JOHANN DR ,  RASP CHRISTIAN DR ,  STAMMANN GUNTER DR

    IPC: C07C239/00 ,  C07C67/00 ,  C07C271/06 ,  C07C125/065

    Abstract: Production of urethanes by the oxycarbonylation reaction of N,N'-disubstituted ureas and organic compounds containing at least one hydroxyl group with carbon monoxide in the presence of molecular oxygen and/or organic nitro compounds and a catalyst system comprising (a) a noble metal and/or noble metal compound of the eighth subgroup of the periodic system of elements and (b) a compound of an element and/or elements of the third to fifth main group and/or first to eighth subgroup of the periodic system of elements characterized in that said compounds are capable of undergoing Redox reactions under the reaction conditions.

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