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    Wholly aromatic polyamides preparation thereof and shaped structures therefrom
    1.
    发明专利
    Wholly aromatic polyamides preparation thereof and shaped structures therefrom 未知

    公开(公告)号：IE67443B1

    公开(公告)日：1996-04-03

    申请号：IE51591

    申请日：1991-02-14

    Applicant: HOECHST AG

    Inventor： KEIL GUENTER ,  HESS REINER ,  RAPP JOCHEN

    IPC: C08G69/32 ,  C08G69/40 ,  C08G69/42 ,  C08J5/18 ,  D01F6/60 ,  D01F6/80 ,  C08J5/22

    Abstract: Aromatic copolyamides are described, which are soluble in organic amide solvents. The polymers are composed to at least 95 mol % of repeat structural units A: -OC-AR-CO- B: -HN-Ar'-NH- C: -HN-Ar''-NH- in the combinations A+B+C+D, or A+C+D+E and up to 5 mol % of m-bond-containing structural units F and/or G derived from aromatic dicarboxylic acids (F') and/or from aromatic diamines (G'), the sum total of the mole fractions of structural units A+F and the sum total of the mole fractions of the structural units of B+C+D+E+G being essentially the same, -Ar- and -Ar'- are divalent aromatic radicals whose C-N valence bonds are in a para-position or in a similar coaxial or parallel position and which may be substituted by one or two inert radicals, such as lower alkykl or halogen, is a trivalent aromatic radical which after removal of the -SO2R group has the same meaning as -Ar- or -Ar'- or else is the structural unit wehre X is -O-, -NHCO-, -SO2- or -CO-, -R is lower alkyl and -R' is lower alkyl or alkoxy, and the proportions of the diamine components B, C, D and E are within the following limits: B: 25-47.5 mol % C: 7.5-30 mol D: 45-67.5 mol and E: 20-40 mol.

    PROCESS FOR THE PREPARATION OF 3,4'-DICHLORODIPHENYL ETHER
    3.
    发明专利
    PROCESS FOR THE PREPARATION OF 3,4'-DICHLORODIPHENYL ETHER 未知

    公开(公告)号：CA2031444A1

    公开(公告)日：1991-06-06

    申请号：CA2031444

    申请日：1990-12-04

    Applicant: HOECHST AG

    Inventor： PAPENFUHS THEODOR ,  SCHUBERT HANS ,  HESS REINER

    IPC: B01J27/232 ,  C07B61/00 ,  C07C41/01 ,  C07C41/16 ,  C07C43/16 ,  C07C43/29 ,  C07C41/06

    Abstract: HOE 89/F 383 Process for the preparation of 3,4'-dichlorodiphenyl ether A process for the preparation of 3,4'-dichlorodiphenyl ether from 1,3-dichlorobenzene and 4-chlorophenol, which comprises mixing 1 mol of 4-chlorophenol with about 2 to about 6 mol of initially introduced 1,3-dichlorobenzene and about 1 to about 3 mol of potassium carbonate in about 1 to about 5 mol of a dipolar aprotic solubilizer which boils above l60.degree.C, at temperatures of about 160.degree.C to about 190.degree.C with stirring, then adding about 0.0l to about 1 mol-% of basic copper carbonate of the formula Cu(OH)2?CuCO3?0.5 H2O and heating with stirring to about 170 to about 173.degree.C while removing the water formed by distillation, then optionally adding further 4-chloxo-phenol with the proviso that from the start the amount of 1,3-dichlorobenzene present in terms of moles is always 1 to 3 mol greater than the totally added amount of 4-chlorophenol and, if desired, additionally adding basic copper carbonate of the formula mentioned if at the start less than 0.1 mol-% had been added, additionally stirring within the last-mentioned temperature range and finally working up after allowing to cool.

    5.
    发明专利
    未知

    公开(公告)号：PT96772A

    公开(公告)日：1991-10-31

    申请号：PT9677291

    申请日：1991-02-14

    Applicant: HOECHST AG

    Inventor： KEIL GUNTER ,  HESS REINER ,  RAPP JOCHEN

    IPC: C08G69/32 ,  C08G69/40 ,  C08G69/42 ,  C08J5/18 ,  D01F6/60 ,  D01F6/80 ,  C08G69/00

    Abstract: Aromatic copolyamides are described, which are soluble in organic amide solvents. The polymers are composed to at least 95 mol % of repeat structural units A: -OC-AR-CO- B: -HN-Ar'-NH- C: -HN-Ar''-NH- in the combinations A+B+C+D, or A+C+D+E and up to 5 mol % of m-bond-containing structural units F and/or G derived from aromatic dicarboxylic acids (F') and/or from aromatic diamines (G'), the sum total of the mole fractions of structural units A+F and the sum total of the mole fractions of the structural units of B+C+D+E+G being essentially the same, -Ar- and -Ar'- are divalent aromatic radicals whose C-N valence bonds are in a para-position or in a similar coaxial or parallel position and which may be substituted by one or two inert radicals, such as lower alkykl or halogen, is a trivalent aromatic radical which after removal of the -SO2R group has the same meaning as -Ar- or -Ar'- or else is the structural unit wehre X is -O-, -NHCO-, -SO2- or -CO-, -R is lower alkyl and -R' is lower alkyl or alkoxy, and the proportions of the diamine components B, C, D and E are within the following limits: B: 25-47.5 mol % C: 7.5-30 mol D: 45-67.5 mol and E: 20-40 mol.

    METHOD FOR THE PREPARATION OF NITROANILINES
    6.
    发明专利
    METHOD FOR THE PREPARATION OF NITROANILINES 未知

    公开(公告)号：CA2063817A1

    公开(公告)日：1991-01-21

    申请号：CA2063817

    申请日：1990-07-19

    Applicant: HOECHST AG

    Inventor： PAPENFUHS THEODOR ,  HESS REINER ,  DEUBEL REINHOLD ,  JUNG RUEDIGER

    IPC: B01J31/02 ,  C07B61/00 ,  C07C209/10 ,  C07C211/48 ,  C07C211/52

    Abstract: - 15 - HOE 89/F 240 of the disclosure: Process for the preparation of nitroanilines A process for the preparation of nitroanilines of the formula (I) (I) in which R1, R2 are a hydrogen atom or a (C1-C4)alkyl group and R is a hydrogen atom or a nitro group, by reacting 1 mol of a nitrochlorobenzene of the formula (II) (II) in which R has the meaning mentioned, with about 200 to about 4000 mol-% of a compound of the formula III (III) in which R1 and R2 have the meanings mentioned, at temperatures of about 40.degree.C to about 120.degree.C and at normal pressure or elevated pressure in the presence of at least one ionic or non-ionic surface-active compound.

    AROMATIC COPOLYETHER AMIDE WHICH CAN BE PROCESSED AS A THERMOPLASTIC, PROCESS FOR ITS PREPARATION, AND ITS USE FOR THE PRODUCTION OF MOLDINGS
    7.
    发明专利
    AROMATIC COPOLYETHER AMIDE WHICH CAN BE PROCESSED AS A THERMOPLASTIC, PROCESS FOR ITS PREPARATION, AND ITS USE FOR THE PRODUCTION OF MOLDINGS 未知

    公开(公告)号：CA1338649C

    公开(公告)日：1996-10-15

    申请号：CA600855

    申请日：1989-05-26

    Applicant: HOECHST AG

    Inventor： CHERDRON HARALD ,  DECKERS HELLMUTH ,  HEROLD FRIEDRICH ,  HESS REINER

    IPC: B29C47/00 ,  B29C43/00 ,  B29C45/00 ,  C08G69/32 ,  C08G69/40 ,  C08G69/42 ,  D01F6/82

    Abstract: Aromatic copolyether amide which can be processed as a thermoplastic, process for its preparation and its use for the production of moldings The structure of the aromatic copolyether amide which can be processed as a thermoplastic comprises recurring units of the formulae -CO-Ar1-CO- (A), -NH-Ar1-O-Ar1-X-Ar1-O-Ar1-NH (B) and -NH-Ar2-NH- (C) in which Ar1 denotes a divalent, unsubstituted or substituted aromatic radical having 6 carbon atoms which is linked in the p-position, X represents a 2,2-propylidene link and Ar2 is identical with Ar1 or is Ar1 which is linked in the m-position, or is the -Ar1-Z-Ar1- group in which Z is a direct bond or is a radical -CH2-, -C(CH3) 2-, -SO2-, -CO-, -O-, -CH=CH-, -CO-NH- or -O-Ar1-O- or the radical in which R represents hydrogen or a branched or unbranched alkyl radical having 1-4 carbon atoms. The proportion of units (A) and of the sum of units (B) and (C) is each 100 mol-%, the proportion of units (C) being up to 50 mol-% and, if Z represents -SO2-, up to 75 mol-%. The Staudinger index ¢?! of the copolyether amide is in the range from 50 to 1000 cm3/g, and the value of the glass transition temperature is above 200.degree.C. The copolyether amide is prepared by a low-temperature solution, solid, interface or melt condensation process. The moldings produced therefrom in the form of filaments, wires, films and other moldings are obtained by processing the pulverulent copolyether smides or their solutions.

    THERMOPLASTICALLY PROCESSIBLE AROMATIC POLYETHERAMIDE, PROCESS FOR ITS PRODUCTION AND ITS USE FOR THE PRODUCTION OF MOLDINGS
    9.
    发明专利
    THERMOPLASTICALLY PROCESSIBLE AROMATIC POLYETHERAMIDE, PROCESS FOR ITS PRODUCTION AND ITS USE FOR THE PRODUCTION OF MOLDINGS 未知

    公开(公告)号：CA1329299C

    公开(公告)日：1994-05-03

    申请号：CA600856

    申请日：1989-05-26

    Applicant: HOECHST AG

    Inventor： CHERDRON HARALD ,  DECKERS HELLMUTH ,  HEROLD FRIEDRICH ,  HESS REINER

    IPC: C08G69/26 ,  C08G69/28 ,  C08G69/32 ,  C08G69/40

    Abstract: A thermoplastically processible aromatic polyetheramide, in which the structure comprises the repeating units of the formulae -CO-Ar-CO- (A) and -NH-Ar-O-Ar-X-Ar-O-Ar-NH- (B) in which Ar signifies a bivalent unsubstituted or substituted aromatic radical having 6 carbon atoms, and whose linkages are in the p-position and X denotes a 2,2propylidene linkage, the polyetheramide having an intrinsic viscosity ¢.pi.! in the range of 50 to 750 cm3/g, and a glass transition temperature of above 200.degree.C, and a process for its production. The production of the polyetheramide is carried out by a low temperature solution condensation process, a solid phase condensation process, an interfacial condensation process or a melt condensation process. The polyetheramide is used for the production of molded articles in the form of filaments, wires, films and other moldings, which are produced by extrusion, press-molding or injection molding of the dry polyetheramide in powder form or by processing of solutions of the polyetheramide.

    PROCESS FOR THE PREPARATION OF ALKYL NITROBENZOATES
    10.
    发明专利
    PROCESS FOR THE PREPARATION OF ALKYL NITROBENZOATES 未知

    公开(公告)号：CA2015439A1

    公开(公告)日：1990-10-26

    申请号：CA2015439

    申请日：1990-04-25

    Applicant: HOECHST AG

    Inventor： PAPENFUHS THEODOR ,  HESS REINER ,  FUSS ANDREAS

    IPC: B01J31/02 ,  C07B61/00 ,  C07C201/12 ,  C07C205/57

    Abstract: - 1 - HOE 89/F 131 : Process for the preparation of alkyl nitrobenzoates A process for the preparation of alkyl (C1-C3) nitrobenzoates by reacting the nitrobenzoic acid to be esterified with an excess of about 300 to about 600 mol % of an alkanol (C1-C3) in a solvent which is inert towards the starting compounds and the reaction product in the presence of a polyfluoroalkanesulfonic acid of the general formula (1) Y(CnF2n)SO3H (1) in which Y is a hydrogen or fluorine atom, with the proviso that, if Y is H, this hydrogen atom is in the .beta.position relative to the sulfo group, or the hydrate thereof as catalyst in an amount of about 0.1 to about 20 mol %, relative to the nitrobenzoic acid used, at temperatures from about 60 to about 120.degree.C.

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