公开(公告)号：CH594562A5

公开(公告)日：1978-01-13

申请号：CH1732973

申请日：1973-12-11

Applicant: HOECHST AG

Inventor： SIEGEMUND GUENTER DR

IPC: B01J27/00 ,  C01B7/00 ,  C01B31/00 ,  C01B31/26

公开(公告)号：GR3026571T3

公开(公告)日：1998-07-31

申请号：GR980400762

申请日：1998-04-07

Applicant: HOECHST AG

Inventor： FRANZ RAIMUND DR ,  SIEGEMUND GUENTER DR

IPC: B01J31/08 ,  C07B61/00 ,  C07C17/087 ,  C07C19/08

Abstract: The invention relates to a process for the preparation of 2-H-heptafluoropropane, in which hexafluoropropene is reacted with hydrogen fluoride in the presence of a weakly basic ion exchanger whose reactive centres are composed of tertiary amino groups.

公开(公告)号：DE4427303A1

公开(公告)日：1996-02-08

申请号：DE4427303

申请日：1994-08-02

Applicant: HOECHST AG

Inventor： EBMEYER FRANK DR ,  METZENTHIN TOBIAS DR ,  SIEGEMUND GUENTER DR

IPC: B01J21/18 ,  C07B61/00 ,  C07C51/58 ,  C07C51/62 ,  C07C53/48 ,  C07C53/40 ,  C07C47/06 ,  C07C47/14 ,  C07C47/16

Abstract: The prepn. of trichloroacetyl chloride (I) comprises catalytic chlorination of acetyl chloride or acetaldehyde (or their chlorinated derivs. which can still be chlorinated) with chlorine using active charcoal as the catalyst.

公开(公告)号：DE4328028A1

公开(公告)日：1995-03-02

申请号：DE4328028

申请日：1993-08-20

Applicant: HOECHST AG

Inventor： APPEL WOLFGANG DR ,  SIEGEMUND GUENTER DR

IPC: C07C209/62 ,  C07B39/00 ,  C07C209/74 ,  C07C211/52 ,  C07C253/30 ,  C07C255/28 ,  C07C319/20 ,  C07C323/36 ,  C07B43/04

Abstract: Trifluoromethylanilines of the formula (I) wherein R and R independently of one another are hydrogen, halogen, (C1-C4)-alkyl, hydroxyl, alkoxy, alkylthio, carboxyl, nitro or a cyano group, are prepared by reacting compounds of the formula (II) wherein X1, X2 and X3 each are identical or different halogen atoms, a is zero of 1, Y is fluorine, chlorine or bromine and R and R have the meaning defined, with anhydrous hydrofluoric acid and converting the resulting aniline hydrofluorides into the free amine using a base.

公开(公告)号：DK0407990T3

公开(公告)日：1994-01-17

申请号：DK90113196

申请日：1990-07-11

Applicant: HOECHST AG

Inventor： SIEGEMUND GUENTER DR ,  LENDLE WILHELM DR ,  CREMER HANS ROBERT DR

IPC: C07C17/10 ,  C07C19/08 ,  C07C19/12

公开(公告)号：DE59002890D1

公开(公告)日：1993-11-04

申请号：DE59002890

申请日：1990-07-11

Applicant: HOECHST AG

Inventor： CREMER HANS ROBERT DR ,  SIEGEMUND GUENTER DR ,  LENDLE WILHELM DR

IPC: C07C17/10 ,  C07C19/08 ,  C07C19/12

公开(公告)号：DE58905269D1

公开(公告)日：1993-09-16

申请号：DE58905269

申请日：1989-11-02

Applicant: HOECHST AG

Inventor： FINKE MANFRED DR ,  SIEGEMUND GUENTER DR ,  STRUTZ HEINZ DR

IPC: C07C59/135 ,  C07C51/58 ,  C08G65/22

Abstract: A continuous process for the preparation of perfluorinated carbonyl fluorides from hexafluoropropene oxide (HFPO), in which HFPO is continuously oligomerized in a catalyst solution in devices which allow separation of the heavy product phase from the catalyst phase during the reaction, is described. Different oligomer distributions can be achieved by choice of the catalyst and different operating temperatures. The reaction itself takes place always in the substantial absence of the product which is formed, and achieves a considerable saving in time.

公开(公告)号：DE3883020D1

公开(公告)日：1993-09-16

申请号：DE3883020

申请日：1988-02-05

Applicant: HOECHST AG

Inventor： SCHNEIDER KLAUS-ALBERT DR ,  SIEGEMUND GUENTER DR

IPC: C07C319/14 ,  C07C67/00 ,  C07C205/26 ,  C07C209/00 ,  C07C209/18 ,  C07C209/36 ,  C07C211/52 ,  C07C211/54 ,  C07C213/00 ,  C07C217/52 ,  C07C217/58 ,  C07C217/92 ,  C07C303/00 ,  C07C307/00 ,  C07C309/00 ,  C07C309/63 ,  C07C309/72 ,  C07C309/73 ,  C07C311/00 ,  C07C313/00 ,  C07C323/09 ,  C07C323/18 ,  C07C323/34 ,  C07C323/36 ,  C07C323/37

Abstract: Fluoro cpds. of formula (I) are mfd. by (a) reaction of mesyl, tosyl or brosyl halide (II) (Hal has atomic wt. 35-80) with 2,2-bis(4-hydroxyphenyl) hexafluoropropane (III), followed by nitration with HNO3 to the corresp. bis(3-nitro) cpds. (IV), or reaction of (II) with the bis(3-nitro) deriv. of (III) to form the same intermediate (I, with R1 = NO2 and R2 = mesyloxy, tosyloxy or brosyloxy), (b) reaction of he intermediate with appropriate amine, thiophenol or benzyl mercaptan to form cpds. (I, with R1 = NO2, R2 as below), and (c) isolation of the nitro cpd. or catalytic hydrogenation to the corresp. amine. In (I), R1 = NO2 or NH2; R2 = residue of max. 10C (6 ring C) cycloaliphatic amine, or aniline (opt. substd. with up to 3 alkyl, alkoxy, Cl, Br max. 2 Hal and max. one alkoxy max. 10C in all; or with a CF3, PhO, or PhCH2 gp.), or PhS-, or PhCH2S-.

公开(公告)号：DK0407961T3

公开(公告)日：1993-08-09

申请号：DK90113146

申请日：1990-07-10

Applicant: HOECHST AG

Inventor： SIEGEMUND GUENTER DR ,  MUELLER THOMAS DR ,  WANZKE WOLFGANG DR

IPC: B01J23/26 ,  B01J23/92 ,  C07B61/00 ,  C07C17/00 ,  C07C17/20 ,  C07C17/21 ,  C07C19/08

Abstract: The invention relates to a process for the preparation of 1,1,1-trifluoro-2-chloroethane from trichloroethene and hydrogen fluoride in the gas phase. In this process a catalyst containing chromium and magnesium is used, which catalyst is obtainable by precipitating chromium(III) hydroxide by reacting 1 mole of a water-soluble chromium(III) salt with at least 1.5 mol of magnesium hydroxide or magnesium oxide in the presence of water, converting the reaction mixture into a paste containing chromium hydroxide and a magnesium salt and then drying the paste and treating it at temperatures of 20 DEG to 500 DEG C. with hydrogen fluoride.

公开(公告)号：DE3874651D1

公开(公告)日：1992-10-22

申请号：DE3874651

申请日：1988-07-23

Applicant: HOECHST AG

Inventor： KRUSE ALFRED DR ,  SIEGEMUND GUENTER DR ,  RUPPERT INGO DR

IPC: B01J31/02 ,  C07B61/00 ,  C07C27/00 ,  C07C29/147 ,  C07C29/36 ,  C07C33/46 ,  C07C67/00 ,  C07C67/14 ,  C07C69/76 ,  C07C69/767 ,  C07C69/78 ,  C07C69/92 ,  C07C321/28

Abstract: Fluorinated benzyl benzoate derivs. of formula (IV) are new, where Ar = formula (A); R1-R5 are each H, 1-6C alkyl (opt. perfluorinated), halo or 1-6C alkoxy or alkylthio; n, same or different, = 0-5. Specifically, not more than 2 of R1-R5 are other than H, and alkyl, alkoxy and alkylthio substits. have 1-4C.