中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

154 records (took 0.023 seconds)

    125.
    发明专利
    未知

    公开(公告)号：ES2145341T3

    公开(公告)日：2000-07-01

    申请号：ES96108081

    申请日：1996-05-21

    Applicant: BASF AG

    Inventor： GREINDL THOMAS DR ,  OFTRING ALFRED DR ,  BRAUN GEROLD DR ,  WILD JOCHEN DR ,  POTTHOFF-KARL BIRGIT DR ,  SCHUH GEORG

    IPC: C07C227/18 ,  C07C227/14 ,  C07C227/16 ,  C07C227/24 ,  C07C227/26 ,  C07C229/16

    Abstract: Prepn. of glycine-N,N-diacetic acid derivs. of formula (I), where R = 1-30C alkyl or 2-30C alkenyl, which can also contain, as substits., up to 5 hydroxyl gps., formyl gps., 1-4C alkoxy gps., phenoxy gps. of 1-4C alkoxycarbonyl gps., and which can be interrupted by up to 5 non-adjacent O atoms, alkoxylate groupings of formula -(CH2)k-O-(A O)m-(A O)n-Y, phenyl alkyl gps. with 1-20C atoms in the alkyl, phenyl, a 5- or 6-membered (un)satd. heterocyclic ring with up to 3 heteroatoms from N, O and S which can also be benzo-condensed, whereby all phenyl cores and heterocyclic rings given for R can also contain as substits. up to 3 1-4C alkyl gps., hydroxyl, gps., carboxyl gps., sulpho gps. or 1-4C alkoxy carbonyl gps., or a gp. of formula (II); A = 1-12C alkylene bridge or a chemical bond; A , A = 2-4C 1,2-alkylene gps.; Y = H, 1-12 C alkyl, phenyl or 1-4 C alkoxycarbonyl; k = 1, 2 or 3; m, n = 0-50; m+n = at least 4; and M = H, alkali metal, alkaline earth metal, ammonium or substd. ammonium in the corresp. stoichiometric quantities, comprises reacting corresp. 2-substd. glycines or 2-substd. glycine nitriles or double glycines of formula (III) or double glycine nitriles of formula (IV) or precursors of the glycine derivs. given as starting materials with formaldehyde and alkali metal cyanide in aq. alkaline medium at a pH of 8-14. The novelty is that 0.5-30 % of the quantity of alkali metal cyanide required for reaction is added to the glycine derivs. or their precursors and then the remaining amt. of alkali metal cyanide and the formaldehyde is added simultaneously over 0.5-12 hrs.

    126.
    发明专利
    未知

    公开(公告)号：DE59504247D1

    公开(公告)日：1998-12-24

    申请号：DE59504247

    申请日：1995-04-27

    Applicant: BASF AG

    Inventor： OFTRING ALFRED DR ,  BURKHART BERND DR ,  WEHLAGE THOMAS DR ,  DYLLICK-BRENZINGER RAINER DR ,  BECK KARIN HEIDRUN DR

    IPC: C07D231/12 ,  C07D233/58 ,  G03G9/097

    Abstract: Electrostatic toner contains a polymeric binder and, as charge stabiliser, a phenylacyl cpd. of formula (I): Het (+) - L - CD - Phe-R An (-) (I); Het (+) = a positively charged gp. derived from an heterocycle of the pyrazole, imidazole, pyridine, (iso)quinoline series; L = 1-8C alkylene; Phe = phenylene, opt. with an annelated benzene ring; R = H, OH, 1-4C alkoxy, NH2, 1-4C mono- or dialkylamino or an opt. substd. 1-6C alkyl, phenyl, phenoxy, mono- or diphenylamino or N-(1-4C alkyl)-N-phenyl-amino gp.; and An (-) = the equiv. of an anion. Also claimed is the use of (I) as charge stabiliser in electrostatic toners.

Patent Agency Ranking