公开(公告)号：JPH10101799A

公开(公告)日：1998-04-21

申请号：JP25185397

申请日：1997-09-17

Applicant: HOECHST AG

Inventor： DISCH STEFAN DR ,  HAUBS MICHAEL DR ,  SCHOENFELD AXEL DR ,  SCHECKENBACH HELMUT DIPL ING

IPC: C08G75/02 ,  C08G75/0295 ,  C08G75/18 ,  C09D181/00 ,  D01F6/76

Abstract: PROBLEM TO BE SOLVED: To provide a soluble linear or branched polyarylene sulfoxide which contains arylene sulfoxide units, has a specified degree of oxidation, and is esp. suitable for molded items such as films, membranes, nonwoven fabrics, fibers, etc., and for coating molded items. SOLUTION: A soluble linear or branched polyarylene sulfoxide contg. arylene sulfoxide units and having a degree of oxidation of 20-80% is provided. It is soluble in a polar org. solvent at from -20 deg.C to 100 deg.C with a solubility of at least 1wt.%. In order to obtain such a polyarylene sulfide, it is necessary to achieve a homogeneous partial oxidation by dispersing a finely divided polyarylene sulfide in a solvent and slowly adding a mild oxidizing agent to the resultant dispersion under vigorous stirring.

公开(公告)号：JPH107797A

公开(公告)日：1998-01-13

申请号：JP7149297

申请日：1997-03-25

Applicant: HOECHST AG

Inventor： HAUBS MICHAEL DR ,  WAGENER REINHARD DR

IPC: C08G75/0254 ,  C08G75/02

Abstract: PROBLEM TO BE SOLVED: To produce an aromatic sulfur-containing polymer by a method under specified conditions wherein the isolation of prepolymer is simplified so that the preparation of a prescribed prepolymer having terminal chloride group(s) is facilitated. SOLUTION: A prepolymer having terminal halide group(s) is prepared from at least one aromatic dihalogenated hydrocarbon (A) and a component (B) comprising at least one alkali (alkaline earth) metal sulfide or hydrate thereof in at least one solvent [wherein the equivalent ratio of alkali to sulfur in the reaction mixture is (0.5:1) to (1:1)], and a small amount of component B is added to the homogeneous solution to form a polymer. The sulfur-containing polymer preferably comprises a polyarylene sulfide, especially a polyphenylene sulfide. The prepolymer obtained by this method has an organic bonded halogen content of 0.2-10wt.% and a number-average molecular weight of usually 500 to 200,000g/mol.

公开(公告)号：DE19513479A1

公开(公告)日：1996-10-17

申请号：DE19513479

申请日：1995-04-13

Applicant: HOECHST AG

Inventor： HAUBS MICHAEL DR ,  SCHLEICHER ANDREAS DR ,  NICKLAS THORSTEN

IPC: C08G75/00 ,  C08G75/02 ,  C08G75/025 ,  C08G75/06

Abstract: The prodn. of aromatic sulphur-contg. polymers (I) comprises: (i) prodn. of (I) from a halogen-terminated prepolymer (II). Also claimed is polyarylene sulphide, pref. with an average mol. wt. (Mn) of 5000-100,000, obtd. from a prepolymer (II).

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

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.

公开(公告)号：DE3936997A1

公开(公告)日：1991-05-08

申请号：DE3936997

申请日：1989-11-07

Applicant: HOECHST AG

Inventor： HAUBS MICHAEL DR ,  DROTLOFF HANSOTTO DR ,  WILDHARDT JUERGEN

IPC: B01D61/36 ,  B01D69/12 ,  B01D71/52

Abstract: A semipermeable membrane of polyether ketones is disclosed. It contains a polymer possesssing the following recurring units: where x denotes with R1, R2, R3 and R4 being identical to or different from one another and denoting H, alkyl, aryl, oxyaryl, NO2, CN, NR2 or halogen, and Z being one of the groupings -O+13, -S-, -CH2-, -CF2-, -SO2- or -CO-

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

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.

公开(公告)号：DE19509300A1

公开(公告)日：1996-09-19

申请号：DE19509300

申请日：1995-03-15

Applicant: HOECHST AG

Inventor： HAUBS MICHAEL DR ,  RIEGER HEINZ DR ,  SCHMIDT MARC DR ,  EYSMONDT JOERG VON DR ,  SIXL WOLFGANG DIPL PHYS

IPC: B01D39/00 ,  B01D39/04

Abstract: A filter material for removing components from gases and liqs. is based on a porous polymer (A) with a specific surface (BET) of more than 2 m /g. Also claimed is a process for the prodn. of polymer (A) from a polyarylene sulphide (PAS) or polyarylene ether (PAE), by phase inversion from soln..

公开(公告)号：DE59010288D1

公开(公告)日：1996-05-23

申请号：DE59010288

申请日：1990-10-09

Applicant: HOECHST AG

Inventor： HAUBS MICHAEL DR ,  HERRMANN-SCHOENHERR OTTO DR ,  CHERDRON HARALD PROF DR

IPC: C08L39/00 ,  C08L39/06 ,  C08L79/04 ,  C09D179/04 ,  D01F6/56 ,  D01F6/74

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

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.

公开(公告)号：DE3923650A1

公开(公告)日：1991-01-31

申请号：DE3923650

申请日：1989-07-18

Applicant: HOECHST AG

Inventor： GIRRBACH ULRICH DR ,  HAUBS MICHAEL DR ,  KNORR HARALD DR ,  MUELLNER HUBERT DR

IPC: C07F9/38

Abstract: A proces is claimed for isolating L-phosphinothricin (I) from an aq. reaction mixt. which is obtd. by enzymatic transamination of 4-(hydroxy)(methyl)phosphinyl -2-oxobutyric acid (II) and which contains (I), (II), alpha-ketoglutaric acid (III) and L-glutamic acid (IV), opt. in salt form. The process comprises partially or largely sepg. (I) from (II)-(IV) by electrodialysis at pH 2.5-2.8. (I) is L-2-amino-4-methylphosphinobutyric acid. ADVANTAGE - The process is simpler and gives higher yields than prior art processes (cf. EP249188).