中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

69 records (took 0.025 seconds)

    PROCESS FOR PREPARING CAPROLACTAM
    61.
    发明专利
    PROCESS FOR PREPARING CAPROLACTAM 未知

    公开(公告)号：CZ152597A3

    公开(公告)日：1997-10-15

    申请号：CZ152597

    申请日：1995-11-29

    Applicant: BASF AG

    Inventor： FUCHS EBERHARD DR ,  ACHHAMMER GUNTER DR

    IPC: C07D201/08 ,  C07D223/10

    Abstract: An improved process for the preparation of caprolactam by heating 6-aminocapronitrile in the presence of a heterogenous catalyst and water under superatmospheric pressure without rapid deactivation of the catalysts used. The process further includes the addition of a low or high boiling alcohol in the heating phase, after which the products are obtained by distillation. The process further includes a method of working up the top and bottom products of the reactors to achieve higher yields.

    62.
    发明专利
    未知

    公开(公告)号：DE59302743D1

    公开(公告)日：1996-07-04

    申请号：DE59302743

    申请日：1993-11-16

    Applicant: BASF AG

    Inventor： WITZEL TOM DR ,  FUCHS EBERHARD DR

    IPC: B01J23/44 ,  C07B61/00 ,  C07C209/48 ,  C07C211/09

    Abstract: Diamines of the general formula I in which A denotes a C1- to C20-alkylene chain which is optionally mono- to pentasubstituted by C1- to C4-alkyl, R and R denote C1- to C20-alkyl, C1- to C20-hydroxyalkyl, C3 - to C8-cycloalkyl, C4- to C20-alkylcycloalkyl, C4- to C20-cycloalkylalkyl, phenyl, C7- to C20-phenylalkyl, C1- to C20-alkoxyalkyl, C7- to C20-phenoxyalkyl, or together denote a saturated or unsaturated C2- to C6-alkylene chain which is optionally mono- to trisubstituted by C1- to C4-alkyl and optionally interrupted by oxygen or nitrogen, are prepared by reaction of dinitriles of the general formula II NC-A-CN (II), in which A has the abovementioned meaning, with secondary amines of the general formula III in which R and R have the abovementioned meanings, with hydrogen at temperatures of 50 to 200@C and pressures of 5 to 300 bar in the presence of a hydrogenation catalyst, by employing palladium catalysts on oxidic supports as hydrogenation catalysts.

    63.
    发明专利
    未知

    公开(公告)号：DE4441962A1

    公开(公告)日：1996-05-30

    申请号：DE4441962

    申请日：1994-11-25

    Applicant: BASF AG

    Inventor： ACHHAMMER GUENTHER DR ,  FUCHS EBERHARD DR

    IPC: C07D201/08 ,  C07D223/10

    Abstract: Caprolactam is prepared by reacting a solution of 6-aminocapronitrile with water in the liquid phase at elevated temperatures by a process in which (a) an aqueous solution of 6-aminocapronitrile in the liquid phase is heated without the addition of a catalyst in a reactor A to give a mixture I consisting essentially of water, caprolactam and a high-boiling fraction (high boiler), then (b) the water is removed from the resulting mixture I to give a mixture II consisting essentially of caprolactam and the high boilers, then (c) the caprolactam and the high boilers from mixture II are separated from one another by distillation, and then either (d1) the high boilers from stage (c) are fed into the reactor A of stage (a) or (d2) the high boilers are heated similarly to stage (a) in a further reactor B and then worked up similarly to stages (b) and (c) to give further caprolactam, or (d3) the high boilers are heated under reduced pressure in the presence of a base in a reactor C and the reacted mixture is worked up by distillation to give caprolactam.

    New 2,10-diazanthracene derivs., useful in e.g. plant protection
    65.
    发明专利
    New 2,10-diazanthracene derivs., useful in e.g. plant protection 未知

    公开(公告)号：DE19509351A1

    公开(公告)日：1995-10-05

    申请号：DE19509351

    申请日：1995-03-15

    Applicant: BASF AG

    Inventor： FUCHS EBERHARD DR ,  WITZEL TOM DR ,  KRACK GERHARD DR ,  WALKER NIGEL DR

    IPC: C07D471/04

    Abstract: 1,2,3,4,4a,9,9a,10-octahydro-2,10-diazaanthracene cpds. of formula (I) are new: Q = a gp. of formula (i), R -R = H, 1-20C alkyl, 2-20C alkenyl, 3-8C cycloalkyl, 3-8C cycloalkenyl, phenyl, 7-20C alkylphenyl, 7-20C phenylalkyl, OH, 1-20C alkoxy, phenoxy, amino, 1-20C alkylamino, phenylamino, 1-20C dialkylamino, phenyl(1-20C) alkylamino, diphenylamino, halo or NO2, provided that R and/or R are not halo and R , R , R are not simultaneously H (sic).

    67.
    发明专利
    未知

    公开(公告)号：DE4407466A1

    公开(公告)日：1995-09-14

    申请号：DE4407466

    申请日：1994-03-07

    Applicant: BASF AG

    Inventor： WITZEL TOM DR ,  FUCHS EBERHARD DR ,  ZIMMERMANN HORST DR

    IPC: B01J23/44 ,  B01J23/58 ,  B01J23/63 ,  C07B61/00 ,  C07C209/48 ,  C07C209/60 ,  C07C211/09 ,  C07C213/02 ,  C07C215/08 ,  C08G18/18 ,  C08G59/68 ,  C07C213/00 ,  C07C211/01 ,  C07C209/00

    Abstract: Prodn. of tert. amines of formula AXCH2NR1R2 (I) comprises reacting nitriles of formula AXCN (II) with sec. amines of formula HNR1R2 (III) and H2 at 50-250 degrees C and 5-350 bar in the presence of a catalyst comprising Pd on an oxide support: R1 and R2 = 1-200C alkyl, 3-8C cycloalkyl, 4-20C alkylcycloalkyl, 4-20C cycloalkylalkyl, 2-20C alkoxyalkyl, aryl, 7-20C alkaryl, 7-20C aralkyl, 2-8C hydroxyalkyl, 2-8C mercaptoalkyl, 8-20C phenoxyalkyl, 2-8C aminoalkyl, R4NH(2-8C)alkyl or R4R5N(2-8C)alkyl, or R1 + R2 = satd. or unsatd. 2-6C alkylene, opt. substd. by up to three 1-4C alkyl gps. and opt. interrupted by O or N; X = 4-8C cycloalkylene or 2-20C alkenylene or 2-20C alkylene opt. substd. by 1-5 of R3, 1-8C alkyl, 1-8C alkoxy, di(1-8C alkyl)amino, OPh, NPh2 and/or 2-8C alkoxycarbonyl; A = H, 1-20C alkyl, 3-8C cycloalkyl, 4-20C alkylcycloalkyl, 4-20C cycloalkylalkyl, 2-20C alkoxyalkyl, aryl, 7-20C alkaryl, 7-20C aralkyl, 1-20C alkoxy, OH, 1-20C hydroxyalkyl, NH2, 1-20C alkylamino, 2-20C dialkylamino, 3-12C alkenylamino, 3-8C cycloalkylamino, arylamino, aryl(1-8C)alkylamino, halogen, SH, 2-20C alkenyloxy, 3-8C cycloalkoxy or aryloxy; R3 = CH2NR1R2; R4 and R5 = 1-20C alkyl.

Patent Agency Ranking