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    Production of styrene
    1.
    发明授权
    Production of styrene 失效
    苯乙烯的生产

    公开(公告)号：US3634531A

    公开(公告)日：1972-01-11

    申请号：US3634531D

    申请日：1969-10-27

    Applicant: BASF AG

    Inventor： PLATZ ROLF ,  BAUR KARL GERHARD

    IPC: C07C5/56 ,  C07C15/46 ,  C07C15/10

    CPC classification number: C07C15/46 ,  C07C5/56

    Abstract: THE PRODUCTION OF STYRENE BY DEHYDROGENATION OF ETHYLBENZENE WITH OXYGEN OR A GAS CONTAINING MOLECULAR OXYGEN IN THE PRESENCE OF IODINE, ISOLATION OF THE CRUDE STYRENE AND DISTILLATION OF THE CRUDE STYRENE WITH THE RECOVERY OF PURE STYRENE, WHEREIN THE CRUDE STYRENE IS IN PART CATALYTICALLY HYDROGENATED. STYRENE IS AN IMPORTANT MONOMER.

    Recovering bromine and iodine from reaction products of oxydehydrogenations
    2.
    发明授权
    Recovering bromine and iodine from reaction products of oxydehydrogenations 失效
    从氧自由基的反应产物中回收溴和碘

    公开(公告)号：US3592600A

    公开(公告)日：1971-07-13

    申请号：US3592600D

    申请日：1968-09-06

    Applicant: BASF AG

    Inventor： PLATZ ROLF ,  BAUR KARL GERHARD

    IPC: B01J38/00 ,  C01B7/09 ,  C01B7/13 ,  C07C5/48 ,  C01C1/16

    CPC classification number: C07C5/48 ,  B01J38/00 ,  C01B7/09 ,  C01B7/13 ,  Y02P20/584

    Abstract: THE RECOVERY OF BROMINE AND/OR IODINE FROM THE REACTION PRODUCTS OF OXYDEHYDROGENATIONS OF HYDROCARBONS IN WHICH BROMINE AND/OR IODINE SERVES AS A CATALYST, WHEREIN THE REACTION PRODUCT LEAVING THE REACTOR IS TREATED WITH AN AGUEOUS AMMONIA SOLUTION TO WHICH HAS BEE ADDED AN AMOUNT OF HYDRAZINE SUFFICIENT FOR THE REDUCTION OF THE ELEMENTARY CONSTITUENTS. THE AQUEOUS PHASE IS SEPARATED AND THE BYPRODUCTS CONTAINING BROMINE AND/ OR IODINE SEPARATED IN THE WORKING UP OF THE ORGANIC PHASE ARE BURNT AND OXYGEN-CONTAINING GASES AND THE GAS FROM THE COMBUSTION IS SCRUBBED WITH AN AMMONIA SOLUTION CONTAINING HYDRAZINE.

    Preparation of alkyl esters of (meth) acrylic acid
    5.
    发明专利
    Preparation of alkyl esters of (meth) acrylic acid 未知

    公开(公告)号：SG50766A1

    公开(公告)日：1998-07-20

    申请号：SG1996010697

    申请日：1996-09-27

    Applicant: BASF AG

    Inventor： BAUR KARL GERHARD ,  ANNEN ULRICH ,  EXNER HERBERT ,  FRIED MICHAEL ,  RAUH ULRICH

    IPC: C07C67/327 ,  C07C69/54 ,  C07C67/08

    Abstract: A process for the prodn. of (1-4C alkyl) (meth)acrylate esters (AM/AE) from esters of formula (I) and opt. esters of formula (II), in which R = H or Me; R , R = 1-4C alkyl; n = 0 or more. The process comprises reaction in the liq. phase under reduced pressure in presence of acid, with continuous removal of cleavage prods. Also claimed is a process for the prodn. of (AM/AE) by the acid-catalysed esterification of 1-4C alkanols with (meth)acrylic acid, in which by-prods. (I) and (II) are sepd. from the prod. mixt. and subjected to the above cleavage process, and the cleavage prods. are continuously removed and returned to the esterification process.

    PROCESS FOR PREPARING 1,6 HEXANEDIOL AND CAPROLACTONE
    7.
    发明专利
    PROCESS FOR PREPARING 1,6 HEXANEDIOL AND CAPROLACTONE 未知

    公开(公告)号：CA2248004C

    公开(公告)日：2006-04-11

    申请号：CA2248004

    申请日：1997-02-28

    Applicant: BASF AG

    Inventor： RUST HARALD ,  STEIN FRANK ,  BREITSCHEIDEL BORIS ,  PINKOS ROLF ,  FISCHER ROLF ,  BAUR KARL GERHARD

    IPC: C07D313/04 ,  C07C27/12 ,  C07C29/149 ,  C07C29/80 ,  C07C29/88 ,  C07C31/20 ,  C07C31/27 ,  C07C51/31 ,  C07D315/00

    Abstract: The invention relates to a process for preparing 1,6 hexane diol and .epsilo n.- caprolacton from a carboxylic acid mixture containing adipic acid, 6-hydroxy caproic acid and, in small quantities, 1,4 cyclohexane diols . Said mixture is obtained as a by-product of the oxidation of cyclohexane into cyclohexanone/ cyclohexanol with oxygen or gases containing oxygen, by water extraction of the reaction mixture. Said process involves esterification and hydrogenation of a partial stream into hexane diol and cyclization of 6-hydroxy caproic acid esters into caprolacton. According to this process: (a) the monocarboxylic acids and the dicarboxylic acids contained in the aqueous reaction mixture are reacted with a low-molecular alcohol to form the corresponding carboxyli c acid esters; (b) the excess alcohol, water and low-boiling agents of the resultant esterification mixture are released in a first distillation stage; (c) separating into a ester fraction substantially free of 1,4 cyclohexane diols, and a fraction containing at least the greater par t of the 1,4 cyclohexane diols is carried out from the bottom product in a second distillation stage; (d) at least part of a stream substantially containing 6-hydroxy caproic acid ester is separated from the ester fraction in a third distillation stage; (e) the ester fraction fro m (d), from which 6-hydroxy caproic acid ester was at least partially removed, is hydrogenated catalytically and 1,6 hexane diol is extracted by distilling the hydrogenated product in a known manner, and (f) the stream substantially containing 6-hydroxy caproic acid ester is heat ed to temperatures above 200 .degree.C at reduced pressure, thereby causing cyclization of 6-hydroxy caproic acid ester to form caprolacton, and pure e-caprolacton is recovered from the cyclization product by distillation.

    8.
    发明专利
    未知

    公开(公告)号：AT192730T

    公开(公告)日：2000-05-15

    申请号：AT97905123

    申请日：1997-02-28

    Applicant: BASF AG

    Inventor： BAUR KARL GERHARD ,  FISCHER ROLF ,  PINKOS ROLF ,  STEIN FRANK ,  BREITSCHEIDEL BORIS ,  RUST HARALD

    IPC: C07D313/04 ,  C07C27/12 ,  C07C29/149 ,  C07C29/80 ,  C07C29/88 ,  C07C31/20 ,  C07C31/27 ,  C07C51/31 ,  C07D315/00

    Abstract: PCT No. PCT/EP97/00990 Sec. 371 Date Aug. 28, 1998 Sec. 102(e) Date Aug. 28, 1998 PCT Filed Feb. 28, 1997 PCT Pub. No. WO97/31883 PCT Pub. Date Sep. 4, 19971,6-hexanediol and epsilon -caprolactone are prepared from a carboxylic acid mixture comprising adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols which is obtained as a by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol using oxygen or oxygen-containing gases by water extraction of the reaction mixture, by esterifying and hydrogenating a substream to give hexanediol and cyclizing 6-hydroxycaproic esters to give caprolactone.

    9.
    发明专利
    未知

    公开(公告)号：DE59602784D1

    公开(公告)日：1999-09-23

    申请号：DE59602784

    申请日：1996-09-26

    Applicant: BASF AG

    Inventor： BAUR KARL GERHARD ,  ANNEN ULRICH ,  EXNER HERBERT ,  FRIED MICHAEL ,  RAUH ULRICH

    IPC: C07C67/08 ,  C07C67/327 ,  C07C69/54

    Abstract: A process for the prodn. of (1-4C alkyl) (meth)acrylate esters (AM/AE) from esters of formula (I) and opt. esters of formula (II), in which R = H or Me; R , R = 1-4C alkyl; n = 0 or more. The process comprises reaction in the liq. phase under reduced pressure in presence of acid, with continuous removal of cleavage prods. Also claimed is a process for the prodn. of (AM/AE) by the acid-catalysed esterification of 1-4C alkanols with (meth)acrylic acid, in which by-prods. (I) and (II) are sepd. from the prod. mixt. and subjected to the above cleavage process, and the cleavage prods. are continuously removed and returned to the esterification process.

    PROCESS FOR PREPARING 1,6 HEXANE DIOL WITH A LEVEL OF PURITY OVER 99 %
    10.
    发明专利
    PROCESS FOR PREPARING 1,6 HEXANE DIOL WITH A LEVEL OF PURITY OVER 99 % 未知

    公开(公告)号：CA2247991A1

    公开(公告)日：1997-09-04

    申请号：CA2247991

    申请日：1997-02-28

    Applicant: BASF AG

    Inventor： PINKOS ROLF ,  FISCHER ROLF ,  BAUR KARL GERHARD ,  RUST HARALD ,  STEIN FRANK ,  BREITSCHEIDEL BORIS

    IPC: C07C29/149 ,  C07C31/20

    Abstract: The invention relates to a process for the preparation of 1,6 hexane diol from a carboxylic acid mixture containing adipic acid, 6-hydroxy caproic acid and, in small quantities, 1,4 cyclohexane diols. Said mixture is obtained as a byproduct of the oxidation of cyclohexane into cyclohexanone/ cyclohexanol by water extraction of the reaction mixture. Said process involves esterification of the acids and hydrogenation. According to this process (a) the monocarboxylic acids and the dicarboxylic acids contained in the aqueous dicarboxylic acid mixture are reacted with a low-molecular alcohol to form the corresponding carboxylic acid esters; (b) the excess alcohol and low-boiling agents of the resultant esterification mixture are released in a first distillation stage; (c) separating into an ester fraction substantially free of 1,4 cyclohexane diols and a fraction containing at least the greater part of the 1,4 cyclohexane diols is carried out from the bottom product in a second distillation stage; (d) the ester fraction substantially free of 1,4 cyclohexane diols is catalytically hydrogenated; and (e) in a pure distillation stage 1,6 hexane diol is extracted from the hydrogenated discharge in a known manner.

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