中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

110 records (took 0.022 seconds)

    24.
    发明专利
    未知

    公开(公告)号：BR9915492A

    公开(公告)日：2001-08-07

    申请号：BR9915492

    申请日：1999-11-06

    Applicant: BASF AG

    Inventor： MAYWALD VOLKER ,  STEINMETZ ADRIAN ,  RACK MICHAEL ,  TZ NORBERT G ,  TZ ROLAND G ,  HENKELMANN JOCHEM ,  BECKER HEIKE ,  BAYETO JUAN JOSE AISCAR

    IPC: C07D231/20

    Abstract: The invention relates to a process for preparing 1-substituted 5- and/or 3-hydroxypyrazoles of the formulae I and IIin which R1 is C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C3-C6-cycloalkyl or C1-C4-alkoxy, where these groups may be substituted by halogen, C1-C4-alkoxy, phenoxy, C1-C6-alkoxycarbonyl, C1-C6-alkylthiocarbonyl or by a cyclic ring system having 3-14 ring atoms, which comprises reactingan alkyl 3-alkoxyacrylate of the formula IIIin which R2, R3 independently of one another are C1-C6-alkyl or C3-C6-cycloalkyl with a hydrazine of the formula IVin which R1 is as defined abovea) at a pH of 6-11 to give 5-hydroxypyrazoles of the formula I orb) at a pH of 11-14 to give 3-hydroxypyrazoles of the formula II.

    27.
    发明专利
    未知

    公开(公告)号：DE502004008984D1

    公开(公告)日：2009-03-26

    申请号：DE502004008984

    申请日：2004-10-23

    Applicant: BASF AG

    Inventor： GUZMANN MARCUS ,  BECKER HEIKE

    IPC: C11D3/37 ,  C11D17/00

    Abstract: Use of copolymers comprising alkylene oxide units and comprising, in randomly or blockwise copolymerized form, (a) 50 to 93 mol % of acrylic acid and/or a water-soluble salt of acrylic acid, (b) 5 to 30 mol % of methacrylic acid and/or a water-soluble salt of methacrylic acid and (c) 2 to 20 mol % of at least one nonionic monomer of the formula I in which the variables have the following meanings: R1 is hydrogen or methyl; R2 is a chemical bond or unbranched or branched C1-C6-alkylene; R3 is identical or different unbranched or branched C2-C4-alkylene radicals; R4 is unbranched or branched C1-C6-alkyl; n is 3 to 50, as deposit-inhibiting additives in the rinsing cycle of a dishwasher.

    28.
    发明专利
    未知

    公开(公告)号：BRPI0517904A

    公开(公告)日：2008-10-21

    申请号：BRPI0517904

    申请日：2005-11-24

    Applicant: FLINT GROUP GERMANY GMBH ,  BASF AG

    Inventor： THIEM ROLAND ,  BECKER HEIKE ,  SCHOLTISSEK MARTIN ,  LORENZ WOLFGANG

    IPC: C08G73/02 ,  B41N3/08

    Abstract: The use of polymers which comprise amino groups modified with acid groups for the preparation of fountain solutions for offset printing. A process for printing by means of the offset technique, in which a fountain solution which comprises polymer which comprises amino groups modified with acid groups is used.

    29.
    发明专利
    未知

    公开(公告)号：AT381527T

    公开(公告)日：2008-01-15

    申请号：AT04727886

    申请日：2004-04-16

    Applicant: BASF AG

    Inventor： KLASS KATRIN ,  BECKER HEIKE ,  VOGELSANG REGINA ,  HAUK ALEXANDER ,  SIEGERT MARKUS ,  HENKELMANN JOCHEM

    IPC: C07C41/08 ,  C07C43/16

    Abstract: A process for continuously preparing methyl vinyl ether by reacting methanol with ethyne in the liquid phase in the presence of a basic alkali metal or alkaline earth metal compound at a temperature of from 40 to 300° C. and a pressure of from 0.1 to 5 MPa abs, by carrying out the reaction in the absence of a continuous gas phase and at a methyl vinyl ether concentration in the entire liquid phase of

Patent Agency Ranking