中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

26 records (took 0.021 seconds)

    REDUCTION OF CHLORINE CONTENT IN ORGANIC ISOCYANATE
    1.
    发明专利
    REDUCTION OF CHLORINE CONTENT IN ORGANIC ISOCYANATE 失效

    公开(公告)号：JP2000290244A

    公开(公告)日：2000-10-17

    申请号：JP2000090537

    申请日：2000-03-29

    Applicant: BAYER AG

    Inventor： DANIELMEIER KARSTEN ,  LEPS HARALD ,  MAGER DIETER ,  HALPAAP REINHARD DR ,  BRAHM MARTIN DR ,  KLIPPER REINHOLD DR ,  HAUNER ANDREAS

    IPC: C07C263/20 ,  C07C265/14

    Abstract: PROBLEM TO BE SOLVED: To obtain a purified organic isocyanate or the like useful for producing a prepolymer or the like by adding a specific anion exchange organic substance to an organic isocyanate or a mixture of isocyanates and then by the heatup under a specific pressure for a specific period of time to remove chlorine compounds. SOLUTION: This method is to bring a gel-type porous anion exchange organic substance (e.g. Lewatit3MP62) not containing metal ions, water and a solvent and having a tertiary and/or quaternary amino group into contact with a chlorine-containing isocyanate (e.g. 4-isocyanatomethyl-1,8- octanediisocyanate) at a temp. of preferably 150-180 deg.C for preferably 3-15 h. to obtain a chlorine content-lessened isocyanate. The anion exchange organic substance is applied in an amount of at least 0.1 wt.%, preferably 1.0-10.0 wt.% based on the weight of an isocyanate. The content of hydrolyzable chlorine separated from the anion exchange substance is

    METHOD FOR PRODUCING HETERODISPERSE CHELATING RESIN
    3.
    发明专利
    METHOD FOR PRODUCING HETERODISPERSE CHELATING RESIN 审中-公开

    公开(公告)号：JP2002363216A

    公开(公告)日：2002-12-18

    申请号：JP2002124032

    申请日：2002-04-25

    Applicant: BAYER AG

    Inventor： KLIPPER REINHOLD DR ,  SEIDEL RUEDIGER DR ,  HEES BRUNO ,  IRMSCHER DIETER ,  LEHMANN BERNHARD ,  LUETJENS HOLGER DIPL CHEM DR ,  SCHNEGG ULRICG ,  ZARGES WOLFGANG DR

    IPC: B01D53/02 ,  B01J45/00 ,  C02F1/28 ,  C08F8/00 ,  C08F8/30 ,  C08F12/00

    Abstract: PROBLEM TO BE SOLVED: To obtain a heterodisperse chelating resin suitable for removal of absorption of a metal compound and having high stability at high capacity, to ensure that the resin can be used for many years with the associated repeated regeneration, and without any use of toxicologically questionable starting materials. SOLUTION: This method for preparing the heterodisperse chelating resin comprises (a) reacting monomer droplets prepared from at least one monovinylaromatic compound and at least one polyvinylaromatic compound, a foaming agent and an initiator or an initiator combination, wherein the initiator is a peroxycarbonate, a perester, or a peroxyester, to give a heterodisperse crosslinked bead polymer, (b) amidomethylating the heterodisperse crosslinked bead polymer with a phthalimide derivative, (c) reacting the amidomethylated bead polymer to afford an amino-methylated bead polymer, and (d) functionalizing the aminomethylated bead polymer to give a bead polymer containing chelating groups.

    USE OF MONODISPERSE ION EXCHANGER FOR REMOVING ARSENIC/ ANTIMONY
    5.
    发明专利
    USE OF MONODISPERSE ION EXCHANGER FOR REMOVING ARSENIC/ ANTIMONY 审中-公开

    公开(公告)号：JP2002177955A

    公开(公告)日：2002-06-25

    申请号：JP2001306657

    申请日：2001-10-02

    Applicant: BAYER AG

    Inventor： LAILACH GUENTER DR ,  KLIPPER REINHOLD DR

    IPC: C02F1/28 ,  B01J41/02 ,  B01J41/04 ,  B01J41/14 ,  B01J45/00 ,  C02F1/42 ,  C02F1/72 ,  C08F2/00

    Abstract: PROBLEM TO BE SOLVED: To provide an ion exchanger which is particularly suitable for arsenic ions and/or antimony ions, selectively removes the arsenic ions and/or the antimony ions from a reaction solution during a synthesizing process step, surely functions for a long period of time at a relatively high temperature and is eventually capable of returning and releasing the water from a process circulating system into the environment. SOLUTION: The monodisperse ion exchanger, more particularly the monodisperse anion exchanger for selective removal of the arsenic/and or antimony in the form of AsF6- ions or SbF6- ions from an aqueous solution or the use of a monodisperse chelate resin.

    METHOD OF SULFONATION
    6.
    发明专利
    METHOD OF SULFONATION 审中-公开

    公开(公告)号：JP2002069128A

    公开(公告)日：2002-03-08

    申请号：JP2001203271

    申请日：2001-07-04

    Applicant: BAYER AG

    Inventor： KLIPPER REINHOLD DR ,  WAGNER DR RUDOLF ,  SEIDEL RUEDIGER DR ,  LUETJENS HOLGER DIPL CHEM DR ,  INGENDOH AXEL DR ,  SCHNEGG ULRICG

    IPC: B01J39/08 ,  B01J39/20 ,  B01J39/26 ,  C02F1/42 ,  C08F2/00 ,  C08F8/36

    Abstract: PROBLEM TO BE SOLVED: To provide a method of sulfonation for a large porous bead polymer and a monodisperse gel type bead polymer whereby the improved osmotic pressure and the mechanical stability, which are required to conform with the current standard, are given to a sulfonated product. SOLUTION: The invention relates to a method for producing an ion exchanger of large porous and strong-acid, or strong-acid and monodisperse gel type, especially the exchanger of large porous and monodisperse, large porous and heterodisperse, or monodisperse gel type by effecting each polymer with a sulfuric acid stepwise through cycles with making the concentration gradient, a cation exchanger produced by the method and use of the same.

    PROCESS FOR PREPARING MONODISPERSE ANION EXCHANGER
    7.
    发明专利
    PROCESS FOR PREPARING MONODISPERSE ANION EXCHANGER 失效

    公开(公告)号：JP2001098019A

    公开(公告)日：2001-04-10

    申请号：JP2000255812

    申请日：2000-08-25

    Applicant: BAYER AG

    Inventor： KLIPPER REINHOLD DR ,  STRUEVER WERNER DR ,  SCHNEGG ULRICG ,  SEIDEL RUEDIGER DR ,  MITSCHKER ALFRED ,  LUETJENS HOLGER DIPL CHEM DR

    IPC: B01J39/04 ,  B01J41/04 ,  B01J41/14 ,  C02F1/42 ,  C08F2/00 ,  C08F8/00 ,  C08F8/30 ,  C08F212/02 ,  C08F212/34

    Abstract: PROBLEM TO BE SOLVED: To provide a process for preparing a monodisperse anion exchanger, preferably a monodisperse, large-pores anion exchanger which has a high mechanical and permeation stability of particles, has an increased absorptive power for anions, requires a reduced amount of resources for preparing the anion-exchanger itself and has a highly pure function basic group and can be prepared in a high yield. SOLUTION: In a process for preparing a monodisperse anion exchanger, (a) monomer droplets prepared from at least one monovinyl aromatic compound and at least one polyvinyl aromatic compound are allowed to undergo a reaction to generate a crosslinked monodisperse bead polymer, (b) this monodisperse bead polymer is subjected to amidomethylation using a phthalimide derivative, (c) this amidomethylated bead polymer is allowed to undergo a reaction to generate an aminomethylated bead polymer, and (d) this aminomethylated bead polymer is alkylated.

Patent Agency Ranking