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    61.
    发明专利
    未知

    公开(公告)号：DE3483028D1

    公开(公告)日：1990-09-27

    申请号：DE3483028

    申请日：1984-06-26

    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 ,  C07C17/24

    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.

    62.
    发明专利
    未知

    公开(公告)号：DE3807623A1

    公开(公告)日：1989-09-21

    申请号：DE3807623

    申请日：1988-03-09

    Applicant: HOECHST AG

    Inventor： HACKENBRUCH JOACHIM DR ,  PAPENFUHS THEODOR DR ,  WARNING KLAUS DR ,  SIEGEMUND GUENTER DR

    IPC: C07B61/00 ,  C07C45/00 ,  C07C45/46 ,  C07C49/813 ,  C07C49/84 ,  C07C67/00 ,  C07C315/04 ,  C07C317/22 ,  C07C317/24 ,  C07C319/20 ,  C07C323/09 ,  C07C323/22 ,  C07F7/08

    Abstract: Process for the preparation of halogenated aromatic compounds of the formula … … in which Hal denotes fluorine, chlorine or bromine and… Z denotes an aromatic group,… characterised in that a halobenzene of the formula C6H5Hal (II) is reacted under anhydrous conditions with a bis-acid halide of the formula Hal-CO-Z-CO-Hal (III) in a molar ratio of at least 2:1 in the presence of haloalkanesulphonic acids of the formula Y(CnX2n)SO3H (IV), where in the formulae II and III Hal and Z have the meaning given previously and Y denotes fluorine or hydrogen, X denotes fluorine and/or chlorine and n denotes an integer from 1 to 10, where at least one X stands for fluorine. … The invention further relates to the use of compounds of the formula I, preferably of 1,4-bis(4-fluorobenzoyl)benzene and of 1,4-bis(4-chlorobenzoyl)benzene, in the form of a clear solution in diphenyl sulphone, which has been obtained by treatment with a solid base, preferably Na2CO3, K2CO3 or MgO, for the preparation of polycondensates.

    63.
    发明专利
    未知

    公开(公告)号：DE3801248A1

    公开(公告)日：1989-07-27

    申请号：DE3801248

    申请日：1988-01-18

    Applicant: HOECHST AG

    Inventor： KRUSE ALFRED DR ,  SIEGEMUND GUENTER DR ,  SCHUMANN AXEL DIPL CHEM ,  RUPPERT INGO-WALTER DR

    IPC: C07C43/225 ,  C07B39/00 ,  C07C17/00 ,  C07C17/093 ,  C07C17/14 ,  C07C17/361 ,  C07C22/08 ,  C07C25/13 ,  C07C41/00 ,  C07C67/00 ,  C07F9/06 ,  C07F9/22

    Abstract: 1-Arylalkoxy-tris(dialkylamino)phosphonium salts of the formula I (I) wherein the substituents R1 to R5 are equal or different and represent hydrogen, alkyl having from 1 to 6 carbon atoms which may be perfluorinated, halogen, alkoxy or alkylthio, each having from 1 to 6 carbon atoms, Y represents hydrogen or a perfluoroalkyl group CnF2n+1 having from 1 to 6 carbon atoms, X represents bromine or iodine and "Alkyl" represents an alkyl group of 1 to 3 carbon atoms, at most 3, preferably at most 2, of the groups R1 to R5 having a meaning other than hydrogen and the alkyl, alkoxy and alkylthio substituents attached to the aromatic nucleus altogether containing preferably at most 6 carbon atoms, in particular at most 4 carbon atoms. The invention also relates to a process for the preparation of the afore-mentioned phosphonium salts and to the use of the compounds of the formula I for the preparation of aromatic compounds having partly fluorinated groups of the formula V (V) in which R1 to R5, X and Y have the afore-mentioned meaning, X can however also be hydrogen.

    67.
    发明专利
    未知

    公开(公告)号：DE3721839A1

    公开(公告)日：1989-01-12

    申请号：DE3721839

    申请日：1987-07-02

    Applicant: HOECHST AG

    Inventor： LAU JUERGEN DR ,  SIEGEMUND GUENTER DR

    IPC: C07C233/43 ,  B01J23/42 ,  B01J23/70 ,  C07B61/00 ,  C07C67/00 ,  C07C209/00 ,  C07C209/36 ,  C07C209/62 ,  C07C211/52 ,  C07C211/56 ,  C07C231/00 ,  C07C231/02 ,  C07C231/12 ,  C07C233/15 ,  C07D239/86 ,  C07C87/60 ,  C07C103/44

    Abstract: The 2,2-bis(3-aminophenyl)hexafluoropropane derivatives have the formula … … in which R is hydrogen or an acyl radical in which a non-aromatic hydrocarbon radical having 1 to 6 carbon atoms is bound to the CO group and R is H or NO2 if R is an acyl radical and is NO2 if R is hydrogen. 2,2-Bis(3,4-diaminophenyl)hexafluoropropane of the formula … … is prepared by… a) acylating 2,2-bis(3-aminophenyl)hexafluoropropane under conventional acylation conditions to give 2,2-bis(3-acylamidophenyl)hexafluoropropane,… b) the 2,2-bis(3-acylamidophenyl)hexafluoropropane is nitrated under conventional nitration conditions to give 2,2-bis(3-acylamido-4-nitrophenyl)hexafluoropropane,… c) the 2,2-bis(3-acylamido-4-nitrophenyl)hexafluoropropane thus obtained is deacylated under conditions customary for deacylation to give 2,2-bis(3-amino-4-nitrophenyl)hexafluoropropane,… d) this product is reduced under conditions customary for the reduction of nitro compounds to give 2,2-bis(3,4-diaminophenyl)hexafluoropropane and this compound is isolated or subjected to purification such that it is converted into the solution of one of its salts, the impurities are adsorbed on an adsorbent and the 2,2-bis(3,4-diaminophenyl)hexafluoropropane is precipitated using a base.

    68.
    发明专利
    未知

    公开(公告)号：DE3422576A1

    公开(公告)日：1985-12-19

    申请号：DE3422576

    申请日：1984-06-18

    Applicant: HOECHST AG

    Inventor： SIEGEMUND GUENTER DR ,  SCHWERTFEGER WERNER DR

    IPC: C07C53/46 ,  C07C51/00 ,  C07C51/60 ,  C07C53/50 ,  C07C67/00

    Abstract: Halogenated aliphatic carboxylic acid fluorides are prepared by reacting halogenated aliphatic carboxylic acids with trihalogenomethyl aromatic compounds containing, as a predominant total or exclusively, fluorine atoms in the trihalogenomethyl groups, in particular with benzotrifluoride, in the presence of Lewis acids as catalysts. The reaction products are intermediate products having a multiplicity of uses.

    69.
    发明专利
    未知

    公开(公告)号：DE3230528A1

    公开(公告)日：1983-09-15

    申请号：DE3230528

    申请日：1982-08-17

    Applicant: HOECHST AG

    Inventor： BLICKLE PETER DR ,  BRANDRUP JOHANNES DR ,  MILLAUER HANS DR ,  SCHWERTFEGER WERNER DR ,  SIEGEMUND GUENTER DR

    IPC: C08F8/12 ,  C08F14/18 ,  C08F20/04 ,  C08F214/26 ,  C08F8/38 ,  C08J5/22 ,  C25B13/08 ,  C25B1/46

    Abstract: Substantially non-crosslinked fluorocarbon polymers containing carboxyl groups are prepared starting from non-crosslinked and in some cases new, fluorocarbon polymers in which the linear macromolecules carry side chains containing the end group -CHFX (X is F or CF3). The starting polymers are first reacted with peroxodisulfuryl difluoride FSO2O-OSO2F to give the corresponding fluorosulfato derivatives containing the side chain end groups. (X is F or CF3). In the event that X is F, these derivaties are then converted into the corresponding carboalkoxy derivatives by means of an alcohol, the fluorosulfato group being split off, and these carboalkoxy derivatives are then converted by saponification into the products containing the free carboxyl groups; the fluorosulfato derivatives can also be hydrolyzed with water, if appropriate in the presence of an inert solvent and/or bases, to give, without further treatment, the products containing the free carboxyl groups. The fluorosulfato derivatives in which X is CF3 in the side chain end groups are first decomposed in the presence of catalytic amounts of alkali metal fluorides and/or aprotic nitrogen bases to give the products containing the side chain end groups and the latter are then hydrolyzed to give the products containing the free carboxyl group. Virtually non-crosslinked fluorocarbon polymers containing carboxyl groups are of industrial importance in the form of cation exchanger membranes in electrolytic cells, particularly in chlor-alkali electrolysis.

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