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    1.
    发明专利
    未知

    公开(公告)号：DE19614126A1

    公开(公告)日：1997-10-16

    申请号：DE19614126

    申请日：1996-04-11

    Applicant: HOECHST AG

    Inventor： HAUBS MICHAEL ,  WAGENER REINHARD ,  SCHOENHERR OTTO

    IPC: C08G75/0254 ,  C08G75/02 ,  C08L81/04

    Abstract: Proposed is a method of producing, from prepolymers with halogen terminal groups, polyarylene sulphides with a narrow molecular-weight distribution, an absolute polydispersivity of less than 1.8 and a very low content of organic impurities.

    4.
    发明专利
    未知

    公开(公告)号：DE59008610D1

    公开(公告)日：1995-04-06

    申请号：DE59008610

    申请日：1990-11-26

    Applicant: HOECHST AG

    Inventor： HAUBS MICHAEL ,  PRASS WERNER

    IPC: B01D53/22 ,  B01D69/12 ,  B32B7/02 ,  C01B13/02

    Abstract: PCT No. PCT/EP90/02021 Sec. 371 Date Jul. 2, 1992 Sec. 102(e) Date Jul. 2, 1992 PCT Filed Nov. 26, 1990 PCT Pub. No. WO91/09669 PCT Pub. Date Jul. 11, 1991.Composite membrane, process for its production and its use A composite membrane for gas separation having a three-layer structure, constructed from A) a supporting membrane layer made of porous polymer, B) a nonporous, gas-permeable intermediate layer, C) a permselective layer of regularly arranged organic molecules having a layer thickness of 3 to 100 nm, the layers (A) and (C) enclosing the intermediate layer (B), wherein the permselective layer (C) is constructed from regularly arranged amphiphilic molecules which contain one or two alkyl chains each having 7 to 25 carbon atoms per polar hydrophilic group.

    5.
    发明专利
    未知

    公开(公告)号：NO174539B

    公开(公告)日：1994-02-14

    申请号：NO890300

    申请日：1989-01-24

    Applicant: HOECHST AG

    Inventor： HAUBS MICHAEL ,  HEROLD FRIEDRICH ,  KRIEG CLAUS-PETER ,  SKALETZ DETLEF ,  WILDHARDT JUERGEN

    IPC: B01D69/10 ,  B01D71/00 ,  B01D71/56 ,  C08G69/32 ,  C08J9/28 ,  C08L77/00 ,  C12N11/08

    Abstract: The membrane is characterised in that it contains a copolyamide having at least the following recurring structural units:… (A) -OC-Ar-CO-… (B) -NH-Ar'-NH-…… … in which… Ar and Ar' are divalent aromatic radicals, in which the valence bonds are in the para or a comparable coaxial or parallel position,… R is a lower alkyl radical or a lower alkoxy radical each having up to 4 C atoms or a halogen radical and… R' is an unsubstituted or substituted methylene radical or an -O-Ar-O- group, in which Ar has the same composition as described above,

    6.
    发明专利
    未知

    公开(公告)号：NO900475L

    公开(公告)日：1990-08-03

    申请号：NO900475

    申请日：1990-02-01

    Applicant: HOECHST AG

    Inventor： HAUBS MICHAEL ,  KREUDER WILLI ,  KRIEG CLAUS-PETER ,  WILDHARDT JUERGEN

    IPC: B01D71/44 ,  B01D67/00 ,  B01D71/56 ,  C08L39/00 ,  C08L39/06 ,  C08L77/00 ,  C08L77/10

    Abstract: A semipermeable membrane is described which comprises a homogeneously miscible polymer blend of an aromatic polyamide and polyvinylpyrrolidone. The aromatic polyamide is in particular formed of recurrent units of the formula I: (I) wherein E1 and E2 are identical or different and are selected from the groupings -AR1-, and -AR1-X-AR2, where AR1 and Ar2 are the same or different 1,2-phenylene, 1,3-phenylene or 1,4-phenylene groups which may be substituted by (C1-C6)-alkyl, (C1-C6)-alkoxy, -CF3 or halogen and X denotes a) a direct bond or one of the following divalent groups: -O-, -C(CF3)2-, -SO2-, -C(R1)2-, with R1 being hydrogen, (C1-C6)-alkyl or fluoroalkyl having from 1 to 4 carbon atoms in the alkyl group or -Z-AR1-Z-, where Z is one of the groups -O- and -C(CH3)2 or -O-Ar1-Y-Ar2-O-, where Y has the meaning given under Xa) above. The membrane has pronouned hydrophilic properties and is moreover stable to hydrolyzing agents and oxidants and to the action of heat. It is also resistant to organic solvents and microorganisms and exhibits low adsorption of proteins. A process for producing the membrane and a process for modifying the retention capacity thereof are also described. The membrane is produced by spreading a solution of the homogeneously miscible polymer blend on a planar substrate and precipitating the blend. Retention capacity is modified by heat treatment.

    7.
    发明专利
    未知

    公开(公告)号：NO890300D0

    公开(公告)日：1989-01-24

    申请号：NO890300

    申请日：1989-01-24

    Applicant: HOECHST AG

    Inventor： HAUBS MICHAEL ,  HEROLD FRIEDRICH ,  KRIEG CLAUS-PETER ,  SKALTEZ DETLEF ,  WILDHARDT JUERGEN

    IPC: B01D69/10 ,  B01D71/00 ,  B01D71/56 ,  C08G69/32 ,  C08J9/28 ,  C08L77/00 ,  C12N11/08 ,  B01D13/00

    Abstract: The membrane is characterised in that it contains a copolyamide having at least the following recurring structural units:… (A) -OC-Ar-CO-… (B) -NH-Ar'-NH-…… … in which… Ar and Ar' are divalent aromatic radicals, in which the valence bonds are in the para or a comparable coaxial or parallel position,… R is a lower alkyl radical or a lower alkoxy radical each having up to 4 C atoms or a halogen radical and… R' is an unsubstituted or substituted methylene radical or an -O-Ar-O- group, in which Ar has the same composition as described above,

    8.
    发明专利
    未知

    公开(公告)号：NO174539C

    公开(公告)日：1994-05-25

    申请号：NO890300

    申请日：1989-01-24

    Applicant: HOECHST AG

    Inventor： HAUBS MICHAEL ,  HEROLD FRIEDRICH ,  KRIEG CLAUS-PETER ,  SKALETZ DETLEF ,  WILDHARDT JURGEN

    IPC: B01D69/10 ,  B01D71/00 ,  B01D71/56 ,  C08G69/32 ,  C08J9/28 ,  C08L77/00 ,  C12N11/08

    Abstract: The membrane is characterised in that it contains a copolyamide having at least the following recurring structural units:… (A) -OC-Ar-CO-… (B) -NH-Ar'-NH-…… … in which… Ar and Ar' are divalent aromatic radicals, in which the valence bonds are in the para or a comparable coaxial or parallel position,… R is a lower alkyl radical or a lower alkoxy radical each having up to 4 C atoms or a halogen radical and… R' is an unsubstituted or substituted methylene radical or an -O-Ar-O- group, in which Ar has the same composition as described above,

    9.
    发明专利
    未知

    公开(公告)号：NO174375B

    公开(公告)日：1994-01-17

    申请号：NO900475

    申请日：1990-02-01

    Applicant: HOECHST AG

    Inventor： HAUBS MICHAEL ,  KREUDER WILLI ,  KRIEG CLAUS-PETER ,  WILDHARDT JUERGEN

    IPC: B01D71/44 ,  B01D67/00 ,  B01D71/56 ,  C08L39/00 ,  C08L39/06 ,  C08L77/00 ,  C08L77/10 ,  B01D71/28

    Abstract: A semipermeable membrane is described which comprises a homogeneously miscible polymer blend of an aromatic polyamide and polyvinylpyrrolidone. The aromatic polyamide is in particular formed of recurrent units of the formula I: (I) wherein E1 and E2 are identical or different and are selected from the groupings -AR1-, and -AR1-X-AR2, where AR1 and Ar2 are the same or different 1,2-phenylene, 1,3-phenylene or 1,4-phenylene groups which may be substituted by (C1-C6)-alkyl, (C1-C6)-alkoxy, -CF3 or halogen and X denotes a) a direct bond or one of the following divalent groups: -O-, -C(CF3)2-, -SO2-, -C(R1)2-, with R1 being hydrogen, (C1-C6)-alkyl or fluoroalkyl having from 1 to 4 carbon atoms in the alkyl group or -Z-AR1-Z-, where Z is one of the groups -O- and -C(CH3)2 or -O-Ar1-Y-Ar2-O-, where Y has the meaning given under Xa) above. The membrane has pronouned hydrophilic properties and is moreover stable to hydrolyzing agents and oxidants and to the action of heat. It is also resistant to organic solvents and microorganisms and exhibits low adsorption of proteins. A process for producing the membrane and a process for modifying the retention capacity thereof are also described. The membrane is produced by spreading a solution of the homogeneously miscible polymer blend on a planar substrate and precipitating the blend. Retention capacity is modified by heat treatment.

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