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公开(公告)号：AT75726T
公开(公告)日：1992-05-15
申请号：AT89105009
申请日：1989-03-21
Applicant: HOECHST AG
Inventor： RITTER EBERHARD DR , KRIEG CLAUS-PETER DR , KEIL DETLEV DR
IPC: C07C249/00 , C07C249/12 , C07C251/34
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公开(公告)号：AT120982T
公开(公告)日：1995-04-15
申请号：AT90101455
申请日：1990-01-25
Applicant: HOECHST AG
Inventor： HAUBS MICHAEL DR , KREUDER WILLI DR , KRIEG CLAUS-PETER DR , WILDHARDT JUERGEN
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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公开(公告)号：DE59008872D1
公开(公告)日：1995-05-18
申请号：DE59008872
申请日：1990-01-25
Applicant: HOECHST AG
Inventor： HAUBS MICHAEL DR , KREUDER WILLI DR , KRIEG CLAUS-PETER DR , WILDHARDT JUERGEN
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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公开(公告)号：DE3903098A1
公开(公告)日：1990-08-16
申请号：DE3903098
申请日：1989-02-02
Applicant: HOECHST AG
Inventor： HAUBS MICHAEL DR , KREUDER WILLI DR , KRIEG CLAUS-PETER DR , WILDHARDT JUERGEN
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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公开(公告)号：DE58908711D1
公开(公告)日：1995-01-19
申请号：DE58908711
申请日：1989-01-13
Applicant: HOECHST AG
Inventor： HAUBS MICHAEL DR , HEROLD FRIEDRICH DR , KRIEG CLAUS-PETER DR , SKALETZ DETLEF DR , WILDHARDT JUERGEN
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,
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Patent Agency Ranking
公开(公告)号：DE58901307D1
公开(公告)日：1992-06-11
申请号：DE58901307
申请日：1989-03-21
Applicant: HOECHST AG
Inventor： RITTER EBERHARD DR , KRIEG CLAUS-PETER DR , KEIL DETLEV DR
IPC: C07C249/00 , C07C249/12 , C07C251/34
Abstract: Process for the preparation of 4-halo-3-oxo-2-alkoxyiminobutyric acid esters by solvent-free halogenation of the liquid substrate of a 3-oxo-2-alkoxyiminobutyric acid ester with elemental halogen.
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公开(公告)号：DE3809845A1
公开(公告)日：1989-10-12
申请号：DE3809845
申请日：1988-03-24
Applicant: HOECHST AG
Inventor： RITTER EBERHARD DR , KRIEG CLAUS-PETER DR , KEIL DETLEV DR
IPC: C07C249/00 , C07C249/12 , C07C251/34
Abstract: Process for the preparation of 4-halo-3-oxo-2-alkoxyiminobutyric acid esters by solvent-free halogenation of the liquid substrate of a 3-oxo-2-alkoxyiminobutyric acid ester with elemental halogen.
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公开(公告)号：DK0382009T3
公开(公告)日：1995-07-03
申请号：DK90101455
申请日：1990-01-25
Applicant: HOECHST AG
Inventor： HAUBS MICHAEL DR , KREUDER WILLI DR , KRIEG CLAUS-PETER DR , WILDHARDT JURGEN
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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公开(公告)号：ES2071686T3
公开(公告)日：1995-07-01
申请号：ES90101455
申请日：1990-01-25
Applicant: HOECHST AG
Inventor： HAUBS MICHAEL DR , KREUDER WILLI DR , KRIEG CLAUS-PETER DR , WILDHARDT JURGEN
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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公开(公告)号：ES2064369T3
公开(公告)日：1995-02-01
申请号：ES89100537
申请日：1989-01-13
Applicant: HOECHST AG
Inventor： HAUBS MICHAEL DR , HEROLD FRIEDRICH DR , KRIEG CLAUS-PETER DR , SKALETZ DETLEF DR , WILDHARDT JURGEN
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,
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