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公开(公告)号:JPH10182707A
公开(公告)日:1998-07-07
申请号:JP35581397
申请日:1997-12-24
Applicant: BASF AG , MAX PLANCK GESELLSCHAFT
Inventor: RAGER TIMO , MEYER WOLFGANG DR , WEGNER GERHARD , MATHAUER KLEMENS DR , MAECHTLE WALTER DR , SCHROF WOLFGANG DR
IPC: C08J3/07 , C08F2/22 , C08F2/44 , C08F10/02 , C08F12/08 , C08F14/04 , C08F18/08 , C08F20/10 , C08F36/06 , C08F210/02 , C08F297/02
Abstract: PROBLEM TO BE SOLVED: To produce an aqueous polymer dispersion having reproducibility without requiring a use of a seed dispersion by performing an emulsion polymerization in the presence of a water-soluble neutral acid and an amphipathic material existing in a frozen form of a micelle state under a polymerization condition. SOLUTION: The objective polymer dispersion is obtained by using an aqueous phase in a polymerization vessel including 10 mol/L water-soluble neutral salt (sodium chloride, etc.) before and/or during the polymerization reaction and adding an amphipathic material existing in a frozen form of a micelle state in the polymerization condition when polymerizing a mono unsaturated monomer (e.g. 70-100wt.% acrylic or methacrylic ester of a 1-12C alkyl and/or styrene) by a free radical aqueous polymerization method. The amphipathic material is an oligomer block polymer of a linear composition containing a water-soluble oligomer block derived from the monomer A (styrenesulfonic acid, etc.) and a hydrophobic oligomer block derived from the monomer B (styrene, etc.) having
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公开(公告)号:FI923060A0
公开(公告)日:1992-07-01
申请号:FI923060
申请日:1992-07-01
Applicant: BASF AG
Inventor: HOFFMANN BERND F W , ERBACH RAINER , WEGNER GERHARD , FUCHS HARALD , SCHREPP WOLFGANG , SCHAUB MATTHIAS
IPC: G01N27/414 , G01N27/22 , G01N27/333 , G01N
Abstract: The invention relates to a miniaturisable, capacitively measuring chemical sensor system on a semiconductor basis, comprising a sensor and a reference element which are to be contacted with the electrolyte to be measured, the reference element being connected in series with the sensor, the reference element comprising a highly doped semiconductor substrate or metal/semiconductor substrate which is coated with a membrane, and the sensor comprising an insulator/semiconductor substrate which is coated with a sensitive membrane, and the sensitive membrane of the sensor being more sensitive than that of the reference element. Sensor and reference element of said sensor system can either be applied to the same chip or consist of individual components which can readily be interchanged.
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公开(公告)号:AU619085B2
公开(公告)日:1992-01-16
申请号:AU5059390
申请日:1990-03-01
Applicant: BASF AG
Inventor: FUNHOFF DIRK , FUCHS HARALD , LICHT ULRIKE , SCHREPP WOLFGANG , HICKEL WERNER , KNOLL WOLFGANG , WEGNER GERHARD , DUDA GISELA
Abstract: The invention relates to a method for reproducing information which is recorded in thin polymer films, information in thin polymer films which have been applied to a metal or semiconductor layer, by means of electromagnetic or particle beams which induce a permanent change in the properties of the polymer films in the irradiated areas, being reproduced by surface plasmons. … …
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公开(公告)号:FI912596A0
公开(公告)日:1991-05-30
申请号:FI912596
申请日:1991-05-30
Applicant: BASF AG
Inventor: SCHWIEGK STEFAN , MATHAUER KLEMENS , WEGNER GERHARD , HOFFMANN BERND F W , VOGEL ALBRECHT
IPC: G01N27/30 , G01N27/414 , G01N
Abstract: The invention relates to a reference electrode for chemical sensors based on ion-selective field-effect transistors (CHEMFETs) in an electrolyte/insulator/semiconductor (EIS) system. The reference electrode consists essentially of an insulator/semiconductor substrate coated with polyglutamate or of a phthalocyaninato-polysiloxane polymer film which is coated with polyglutamate and mounted on an insulator/semiconductor substrate.
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公开(公告)号:DK407688A
公开(公告)日:1989-01-25
申请号:DK407688
申请日:1988-07-21
Applicant: BASF AG
Inventor: WEGNER GERHARD , DUDA GISELA , BUBECK CHRISTOPH , SCHOUTEN AREND JAN
Abstract: Thin films which contain a defined concentration of dye per unit area and are useful as layer elements, e.g. for optical filters, are prepared by spreading an oleophilic dye which is soluble in an organic water-immiscible solvent and an organic polymer dissolved in an organic solvent as a thin film at the water/air interface and, after the solvent has evaporated, transferring said film by the Langmuir-Blodgett technique to a solid base material.
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公开(公告)号:DE59709787D1
公开(公告)日:2003-05-15
申请号:DE59709787
申请日:1997-01-23
Applicant: BASF AG , MAX PLANCK INST
Inventor: MATHAUER KLEMENS , MAECHTLE WALTER , SCHROF WOLFGANG , SCHUCH HORST , RAGER TIMO , MEYER WOLFGANG , WEGNER GERHARD
IPC: C08F2/08 , C08F2/22 , C08F2/24 , C08F297/00 , C08F297/02 , C08J3/03
Abstract: In a process for the preparation of an aqueous polymer dispersion by the free radical aqueous emulsion polymerization method, the polymerization is carried out in the presence of frozen micelles of amphiphilic substances.
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公开(公告)号:CA1337469C
公开(公告)日:1995-10-31
申请号:CA572793
申请日:1988-07-22
Applicant: BASF AG
Inventor: WEGNER GERHARD , DUDA GISELA , BUBECK CHRISTOPH , SCHOUTEN AREND JAN
Abstract: Thin films which contain a defined concentration of dye per unit area and are useful as layer elements, eg. for optical filters, are prepared by spreading an oleophilic dye which is soluble in an organic water-immiscible solvent and an organic polymer dissolved in an organic solvent as a thin film at the water/air interface and, after the solvent has evaporated, transferring said film by the Langmuir-Blodgett technique to a solid base material
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公开(公告)号:CA1328786C
公开(公告)日:1994-04-26
申请号:CA536869
申请日:1987-05-11
Applicant: BASF AG
Inventor: WEGNER GERHARD , ORTHMANN ERNST
IPC: B01J31/16 , B01J31/18 , B05D1/20 , B05D7/24 , B32B9/00 , C08J7/04 , C09D183/08 , G03G5/06 , D06M13/50
Abstract: A layer element comprises a base having a hydrophobic surface and, applied on this, one or more solid, thin, ordered layers of defined uniform and regular structure, in particular monolayers or multilayers, having a uniform orientation of the layerforming molecules in one direction. The said layers are formed from a metallomacrocyclic polymer which is fusible and/or soluble in an organic, water-immiscible solvent and is of the general formula ¢M(Pcyc)O!n, where M is Si, Ge or Sn, (Pcyc) is a complex-forming centrosymmetric polycyclic ring system, in particular a phthalocyanine ring system having hydrophobic substituents, and n is the mean degree of polymerization and is equal to or greater than 3. The novel layer elements can advantageously be produced by the Langmuir-Blodgett technique, in which a solidlike monolayer Produced on a water surface from the metallomacrocyclic polymers is transferred to a substrate having a hydrophobic surface by immersion and withdrawal of the said substrate. The layer elements according to the invention can be used, for example, as optical filters, eg. grey filters, interference filters or polarization filters, in electrochemistry and the electrical industry, for example as electrodes, sensors, catalysts etc., as photosensitive elements for electrophotography, and for many other applications.
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公开(公告)号:DK164357C
公开(公告)日:1992-11-16
申请号:DK234787
申请日:1987-05-08
Applicant: BASF AG
Inventor: WEGNER GERHARD , ORTHMANN ERNST
Abstract: This invention relates to a process, which comprises spreading a metallomacrocyclic polymer dissolved in an organic, water-immiscible solvent on a water surface, removing the solvent to form a monomolecular, uniformly oriented film of said polymer on the surface of the water, immersing a substrate in the water, and withdrawing the substrate from the water, whereby said polymer film is transferred from the water surface to the substrate.
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公开(公告)号:DK164357B
公开(公告)日:1992-06-15
申请号:DK234787
申请日:1987-05-08
Applicant: BASF AG
Inventor: WEGNER GERHARD , ORTHMANN ERNST
Abstract: This invention relates to a process, which comprises spreading a metallomacrocyclic polymer dissolved in an organic, water-immiscible solvent on a water surface, removing the solvent to form a monomolecular, uniformly oriented film of said polymer on the surface of the water, immersing a substrate in the water, and withdrawing the substrate from the water, whereby said polymer film is transferred from the water surface to the substrate.
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