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    Fluorine contg. asymmetric trifunctional aromatic cpds. - useful in mfr. of fluorine contg. polyamideimide or polybenzimidazole-benzimidazolone(s)
    81.
    发明专利
    Fluorine contg. asymmetric trifunctional aromatic cpds. - useful in mfr. of fluorine contg. polyamideimide or polybenzimidazole-benzimidazolone(s) 未知

    公开(公告)号：DE4041255A1

    公开(公告)日：1992-06-25

    申请号：DE4041255

    申请日：1990-12-21

    Applicant: HOECHST AG

    Inventor： ROEHRSCHEID FREIMUND DR ,  APPEL WOLFGANG K DR ,  SIEGEMUND GUENTER DR

    IPC: C07C69/76 ,  C07D307/89

    Abstract: Asymmetric hexafluoroisopropylidene gp.-contg. aromatic cpds. of formula (I) are claimed as is also the prepn. of the tri-acid form of (I) by introduction of air into hexafluoro-2(4-methylphenyl) -2(3',4'-dimethylphenyl) propane in an acid org. medium at 120-220 deg.C/5-40 bar in presence of a mixt. of Co- and Mn- cpds. and bromide ions. (a) R1-3 = COOH, carboxylic acid halide and/or a carboxylic ester in which the OH component is a 1-4C alcohol or PhOH; or (b) R2 and R3 together form a carboxylic acid anhydride gp. and R1 is as for (a) or is a mixed anhydride gp. of formula -CO-O-OC.CH3. USE/ADVANTAGE - Use of (I) is claimed in the prodn. of F-contg. polyamide-imides or polybenzimidazole-benzimidazolones. Such polymers are obtd. by reaction of (I) with aromatic di- or tetra-amines and carbine high thermal- and hydrolytic-stability and good processing characteristics with good solubility.

    82.
    发明专利
    未知

    公开(公告)号：DE58900228D1

    公开(公告)日：1991-09-26

    申请号：DE58900228

    申请日：1989-03-07

    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.

    83.
    发明专利
    未知

    公开(公告)号：DE3863136D1

    公开(公告)日：1991-07-11

    申请号：DE3863136

    申请日：1988-06-30

    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

    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.

    84.
    发明专利
    未知

    公开(公告)号：DE3862441D1

    公开(公告)日：1991-05-23

    申请号：DE3862441

    申请日：1988-07-23

    Applicant: HOECHST AG

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

    IPC: C07C45/63 ,  B01J31/02 ,  C07B31/00 ,  C07B41/06 ,  C07B61/00 ,  C07C45/00 ,  C07C45/45 ,  C07C45/68 ,  C07C49/80 ,  C07C49/84 ,  C07C67/00 ,  C07C319/20 ,  C07C323/09 ,  C07C323/22

    Abstract: A process for the preparation of arylperfluoroalkyl ketones of the general formula I (I) wherein R1 and R5 represent at least one of the substituents hydrogen, halogen, alkyl, alkoxy, alkylthio and perfluorinated alkyl, each having from 1 to 6 carbon atoms and n is an integer from 1 to 6, which comprises reacting an aryl carbonyl compound having the general formula II (II) wherein R1 to R5 have the above-mentioned meaning and X as a monovalent moiety represents fluorine, chlorine or bromine and as a bivalent moiety the oxygen atom of an anhydride bridge, with a perfluoroalkyl halide of the general formula CnF2n+1-Hal (III), wherein Hal represents chlorine, bromine or iodine and n is an integer from 1 to 6, in the presence of a trisdialkyl amide of phosphorus acid of the general formula P[N(alkyl)2]3 (IV).

    85.
    发明专利
    未知

    公开(公告)号：DE58900057D1

    公开(公告)日：1991-04-11

    申请号：DE58900057

    申请日：1989-01-07

    Applicant: HOECHST AG

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

    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.

    87.
    发明专利
    未知

    公开(公告)号：DE3766310D1

    公开(公告)日：1991-01-03

    申请号：DE3766310

    申请日：1987-07-17

    Applicant: HOECHST AG

    Inventor： SCHNEIDER KLAUS-ALBERT DR ,  SIEGEMUND GUENTER DR

    IPC: C07C29/80 ,  C07C27/00 ,  C07C29/38 ,  C07C29/84 ,  C07C33/46 ,  C07C67/00

    Abstract: Isomer mixtures of 1,3- and 1,4-bis-(2-hydroxyhexafluoroprop-2-yl)-benzene are separated by a steam distillation in the presence of CS2. On cooling of the steam distillate, a solid precipitates which is composed mainly of the 1,4-isomer. After the solid has been separated off, an aqueous-organic liquid-phase mixture remains, the organic phase of which mainly contains the 1,3-isomer. The pure isomers are obtained by recrystallization or distillation respectively. These are mainly intermediates in the polymer field.

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