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    MANUFACTURE OF PERFLUOROCARBOXYLIC ACID NITRILES
    2.
    发明专利
    MANUFACTURE OF PERFLUOROCARBOXYLIC ACID NITRILES 未知

    公开(公告)号：GB1411180A

    公开(公告)日：1975-10-22

    申请号：GB894073

    申请日：1973-02-23

    Applicant: BASF AG

    Inventor： HETZEL ECKHARD ,  KORPIUN OLAF

    IPC: C07C20060101 ,  C07C120/10

    Abstract: 1411180 Perfluorocarboxylic acid nitrites BADISCHE ANILIN- & SODA-FABRIK AG 23 Feb 1973 [25 Feb 1972] 8940/73 Heading C2C Perfluorocarboxylic acid nitriles are prepared by reacting the corresponding perfluorocarbonamide with phosphorus pentoxide in the gas phase at 450-600‹ C. in the presence of an inert carrier gas. The perfluorocarboxamide preferably has 2-16 C atoms, e.g. perfluoroacetamide, -propionamide, -octanamide and -cyclohexylcarbonamide. Preferably 1 to 10 moles of P 2 0 5 are reacted per mole of amide at 460-560‹ 0. for a residence time of 2-20 seconds with nitrogen as the carrier gas. The reaction mixture is advantageously quenched with water to 15-25‹ C.

    MANUFACTURE OF TETRAHYDROFURAN
    4.
    发明专利
    MANUFACTURE OF TETRAHYDROFURAN 未知

    公开(公告)号：CA1057765A

    公开(公告)日：1979-07-03

    申请号：CA233823

    申请日：1975-08-20

    Applicant: BASF AG

    Inventor： HETZEL ECKHARD ,  WEITZ HANS-MARTIN ,  VOGEL LUDWIG ,  HARTIG JUERGEN

    IPC: B01J27/00 ,  B01J31/00 ,  C07B61/00 ,  C07D307/08

    Abstract: Tetrahydrofuran is prepared from a compound containing butanediol or capable of generating butanediol. The butanedioldonating compound is the diacetate of butanediol-1,4 which is reacted with hydrolysis and etherification by passing it downwardly through a distillation column together with an acid catalyst and passing steam upwardly therethrough. The reaction is performed at temperatures of from 80.degree. to 200.degree.C and the amount of water used is from 1.24 to 20 moles for each mole of diacetate introduced. The product which distills off is tetrahydrofuran.

    CONTINUOUS MANUFACTURE OF PHTHALIMIDE
    7.
    发明专利
    CONTINUOUS MANUFACTURE OF PHTHALIMIDE 未知

    公开(公告)号：CA1031351A

    公开(公告)日：1978-05-16

    申请号：CA204414

    申请日：1974-07-09

    Applicant: BASF AG

    Inventor： HETZEL ECKHARD ,  VOGEL LUDWIG ,  ROTERMUND GERHARD ,  HORN HANS C

    IPC: C07D209/48 ,  D07B7/06

    Abstract: 1465756 Phthalamide BASF AG 9 July 1974 [10 July 1973] 30292/74 Heading C2C A continuous process for the preparation of phthalimide comprises reacting phthalic anhydride with ammonia at elevated temperature, washing the off-gas with a melt which contains at least 70% by weight of phthalimide, at a temperature of not less than 210‹ C., and feeding the melt to the reaction. Preferably the reaction is carried out in countercurrent and the wash column is combined with the reactor by using a tray column, the phthalic anhydride melt being fed continuously to one of the middle trays, the ammonia being introduced at the bottom of the column, and the phthalimide melt, as the wash fluid, being introduced at the top of the column.

    MANUFACTURE OF PERFLUOROCARBOXYLIC ACID NITRILES
    9.
    发明专利
    MANUFACTURE OF PERFLUOROCARBOXYLIC ACID NITRILES 未知

    公开(公告)号：CA981284A

    公开(公告)日：1976-01-06

    申请号：CA164605

    申请日：1973-02-23

    Applicant: BASF AG

    Inventor： HETZEL ECKHARD ,  KORPIUN OLAF

    IPC: C07C20060101

    Abstract: 1411180 Perfluorocarboxylic acid nitrites BADISCHE ANILIN- & SODA-FABRIK AG 23 Feb 1973 [25 Feb 1972] 8940/73 Heading C2C Perfluorocarboxylic acid nitriles are prepared by reacting the corresponding perfluorocarbonamide with phosphorus pentoxide in the gas phase at 450-600‹ C. in the presence of an inert carrier gas. The perfluorocarboxamide preferably has 2-16 C atoms, e.g. perfluoroacetamide, -propionamide, -octanamide and -cyclohexylcarbonamide. Preferably 1 to 10 moles of P 2 0 5 are reacted per mole of amide at 460-560‹ 0. for a residence time of 2-20 seconds with nitrogen as the carrier gas. The reaction mixture is advantageously quenched with water to 15-25‹ C.

    10.
    发明专利
    未知

    公开(公告)号：BE795726A

    公开(公告)日：1973-08-21

    申请号：BE795726D

    Applicant: BASF AG

    Inventor： HETZEL ECKHARD ,  KORPIUN OLAF

    IPC: C07C20060101 ,  C07C

    Abstract: 1411180 Perfluorocarboxylic acid nitrites BADISCHE ANILIN- & SODA-FABRIK AG 23 Feb 1973 [25 Feb 1972] 8940/73 Heading C2C Perfluorocarboxylic acid nitriles are prepared by reacting the corresponding perfluorocarbonamide with phosphorus pentoxide in the gas phase at 450-600‹ C. in the presence of an inert carrier gas. The perfluorocarboxamide preferably has 2-16 C atoms, e.g. perfluoroacetamide, -propionamide, -octanamide and -cyclohexylcarbonamide. Preferably 1 to 10 moles of P 2 0 5 are reacted per mole of amide at 460-560‹ 0. for a residence time of 2-20 seconds with nitrogen as the carrier gas. The reaction mixture is advantageously quenched with water to 15-25‹ C.

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