公开(公告)号：DE3739798A1

公开(公告)日：1989-06-08

申请号：DE3739798

申请日：1987-11-24

Applicant: HOECHST AG

Inventor： LAU JUERGEN DR ,  SIEGEMUND GUENTER DR

IPC: C07C205/38 ,  C08G59/40 ,  C08G73/10 ,  C08G73/20

Abstract: Compounds of the formula in which X is -NO2 or NH2, their preparation by nitration and, if appropriate, subsequent reduction of a suitable dihydroxy compound, and the use of the diamino compound for the preparation of polycondensates which are stable at high temperatures.

公开(公告)号：DE3739795A1

公开(公告)日：1989-06-08

申请号：DE3739795

申请日：1987-11-24

Applicant: HOECHST AG

Inventor： SIEGEMUND GUENTER DR

IPC: C07C41/00 ,  C07C41/30 ,  C07C43/29 ,  C07C43/295 ,  C07C67/00 ,  C08G63/18 ,  C08G63/19 ,  C08G63/682 ,  C08G69/26 ,  C08G73/10

Abstract: A compound of the formula (I) in which independently of one another R is equal to OH or lower alkyl having 1 to 4 carbon atoms, R' is equal to hydrogen or lower alkyl having 1 to 4 carbon atoms, processes for their preparation and their use as starting material in the preparation of partially fluorinated polycondensates.

公开(公告)号：DE3737920A1

公开(公告)日：1989-05-18

申请号：DE3737920

申请日：1987-11-07

Applicant: HOECHST AG

Inventor： KRUSE ALFRED DR ,  SIEGEMUND GUENTER DR ,  SCHWERTFEGER WERNER DR

IPC: B01J31/26 ,  C07B61/00 ,  C07C51/00 ,  C07C51/58 ,  C07C59/135 ,  C07C67/00

Abstract: The invention relates to a process for the preparation of perfluorinated carbonyl fluorides of the formula (I) by oligomerization of hexafluoropropene oxide in the presence of a catalyst. The catalyst comprises a mixture of an alkali metal fluoride, a carboxylic acid dinitrile and a polyethylene glycol dimethyl ether.

公开(公告)号：BR8403197A

公开(公告)日：1985-06-11

申请号：BR8403197

申请日：1984-06-28

Applicant: HOECHST AG

Inventor： MUELLER THOMAS DR ,  SIEGEMUND GUENTER DR

IPC: B01J23/26 ,  B01J27/12 ,  B01J27/138 ,  B01J29/26 ,  B01J37/26 ,  C07B61/00 ,  C07C17/00 ,  C07C17/20 ,  C07C17/37 ,  C07C67/00

Abstract: A process is specified for preparing a chromium- and magnesium-containing catalyst for fluorination reactions by precipitating chromium(III) hydroxide. In this process, 1 mole of a water-soluble chromium(III) salt is reacted with at least 1.5 moles of magnesium hydroxide or magnesium oxide in the presence of water, and the reaction mixture-if necessary by evaporation-is converted into a paste which contains chromium(III) hydroxide and a magnesium salt. The paste is dried and treated with hydrogen fluoride at temperatures of 20 DEG to 500 DEG C.

公开(公告)号：CH597122A5

公开(公告)日：1978-03-31

申请号：CH1091374

申请日：1974-08-09

Applicant: HOECHST AG

Inventor： KUEHN HEINRICH DR ,  KLUGE FRIEDHELM DR ,  SIEGEMUND GUENTER DR

IPC: C07C41/00 ,  C07C43/12 ,  C07C67/00

公开(公告)号：DE4445529C1

公开(公告)日：1996-03-21

申请号：DE4445529

申请日：1994-12-20

Applicant: HOECHST AG

Inventor： HAHN ULRICH ,  FRANZ RAIMUND DR ,  SIEGEMUND GUENTER DR

IPC: C07B39/00 ,  C07C17/087 ,  C07C17/38 ,  C07C209/86 ,  C07C211/03 ,  C07C211/07 ,  C07C19/08 ,  C07C209/82

Abstract: Method for working up a liquid complex hydrofluoride of a tert. amine of formula (R R R N.n HF) (I), which is reacted with a haloalkene of formula R CF=CR R (II) for addn. of HF to (II), comprises allowing the HF : amine molar ratio to fall during the reaction until the amine forms as another liquid phase and sepg. the amine. R ,R ,R = 1-8C alkyl with a total of at least 7C; n = more than 1.5 and less than 3; R = F, CF3 or C2F5; R = F, Cl or CF3; R = H, F or 1-4C perfluoroalkyl.

公开(公告)号：DE4333058A1

公开(公告)日：1995-03-30

申请号：DE4333058

申请日：1993-09-29

Applicant: HOECHST AG

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

IPC: C07B45/06 ,  C07C319/14 ,  C07C321/06 ,  C07C323/03 ,  C07C323/04 ,  C07C323/09 ,  C07C323/36 ,  C07C323/62 ,  C07D213/70 ,  C07D233/56 ,  C07D277/22 ,  C07D277/26 ,  C07D277/74 ,  C07C323/35 ,  C07D213/04 ,  C07D263/32 ,  C07D235/06 ,  C07D263/56 ,  C07D521/00

Abstract: The invention relates to the preparation of trifluoroethylsulphur compounds of the formula RSCH2CF3 by reaction of 1-chloro-2,2,2-trifluoroethane CH2Cl-CF3 in a polar aprotic solvent with salts of thiols of the formula RSH, where R can be an alkyl or aryl radical or a heterocyclic radical.

公开(公告)号：DE4323264A1

公开(公告)日：1995-01-19

申请号：DE4323264

申请日：1993-07-12

Applicant: HOECHST AG

Inventor： FRANZ RAIMUND DR ,  SIEGEMUND GUENTER DR

IPC: C07C17/087 ,  C07C19/08 ,  C07C17/08 ,  C07C211/05 ,  C07C211/07

Abstract: The invention relates to a process for the preparation of 2-H-heptafluoropropane, in which hexafluoropropene is reacted with a hydrogen fluoride of a tertiary organic nitrogen base of the general formula (I> [B.nHF] in which B represents a tertiary organic nitrogen base and n is the molar amount of HF per nitrogen atom of the base and represents an integer or fraction

公开(公告)号：DE4323054A1

公开(公告)日：1995-01-19

申请号：DE4323054

申请日：1993-07-14

Applicant: HOECHST AG

Inventor： FRANZ RAIMUND DR ,  SIEGEMUND GUENTER DR

IPC: B01J31/08 ,  C07B61/00 ,  C07C17/087 ,  C07C19/08 ,  C07C17/08 ,  C07C211/07 ,  C07C211/05

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：DE3851343D1

公开(公告)日：1994-10-06

申请号：DE3851343

申请日：1988-11-17

Applicant: HOECHST AG

Inventor： ROEHRSCHEID FREIMUND DR ,  SIEGEMUND GUENTER DR ,  LAU JUERGEN DR

IPC: C07C51/265 ,  C07C63/72 ,  C07C65/24