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    Catalytic desulfurization of acid gas streams involves reaction with an aqueous solution of iron(III) methylglycine-diacetic acid complex followed by regeneration with oxidizing agent
    11.
    发明专利
    Catalytic desulfurization of acid gas streams involves reaction with an aqueous solution of iron(III) methylglycine-diacetic acid complex followed by regeneration with oxidizing agent 未知

    公开(公告)号：DE10144890A1

    公开(公告)日：2003-03-27

    申请号：DE10144890

    申请日：2001-09-12

    Applicant: BASF AG

    Inventor： HESSE WERNER ,  JAEGER HANS-ULRICH

    IPC: B01D53/86 ,  B01D53/14 ,  B01J31/22 ,  B01D53/52 ,  C01B17/00 ,  C10L3/10 ,  C10K3/02

    Abstract: Metal chelate complexes based on a glycine-diacetic acid derivative as ligand and a multivalent metal ,which is reduced by hydrogen sulfide to a lower oxidation state, are used for removing H2S gas from acid gas streams in a cyclic process involving regeneration with an oxidizing agent. A process for removing hydrogen sulfide from an acid gas stream involves: (a) reducing the amount of H2S gas in the stream by reaction with an aqueous solution containing a metal chelate complex with a ligand of formula (I), the metal being a multivalent metal which can exist in more than one oxidation state and is at least partly in a lower oxidation state (reduced form) after reaction with H2S, (b) regenerating the mixture of elemental sulfur and reduced metal complex with an oxidizing agent so that the metal is oxidized to its original state, and (c) returning the regenerated complex to stage (a). Stages (a) and (b) may be carried out in the same reactor. X = H, alkali metal or ammonium; n = 1, 2 or 3; R -R = H, alkyl, aryl, alkoxy, aryloxy, carboxy or hydroxyl, at least one of these groups being other than H. An Independent claim is also included for mixtures containing a metal chelate complex as described above for removing H2S gas from an acid gas stream.

    A METHOD FOR ELECTROLYTIC GALVANISING USING ELECTROLYTES CONTAINING ALKANE SULPHONIC ACID
    13.
    发明专利
    A METHOD FOR ELECTROLYTIC GALVANISING USING ELECTROLYTES CONTAINING ALKANE SULPHONIC ACID 未知

    公开(公告)号：CA2415341A1

    公开(公告)日：2003-01-09

    申请号：CA2415341

    申请日：2001-07-09

    Applicant: BASF AG

    Inventor： HAAS JENS ,  JAGER HANS-ULRICH ,  BRODT GREGOR ,  HESSE WERNER

    IPC: C25D3/22 ,  C25D3/56 ,  C25D5/26

    Abstract: The invention relates to a method for electrolytically coating metalswith zi nc or a zinc alloy. Matt surfaces are obtained by depositing zinc from an electrolyte solution containing a zinc salt selected from zinc sulphate or a n alkane sulphate of zinc or mixtures thereof and optionally other metal salts , an acid selected from sulphuric acid or an alkane sulphonic acid or a mixtur e of both acids and at least one additive for improving surface roughness and for avoiding dendritic edge growth, selected from surface active compounds containing nitrogen which can be ionic or non-ionic, anionic surface active compounds containing nitrogen, and surface active compounds derived from mul ti- fuctional alcohols with at least three hydroxy groups. The invention also relates to an electrolytic composition for an electrolytically coating of metals with zinc or zinc alloys, in addition to the use of the above-mention ed additives for improving surface roughness and avoiding dentritic edge growth when metals are electrolytically coated with zinc or a zinc alloy in an electrolyte containing alkane sulphonic acid.

    16.
    发明专利
    未知

    公开(公告)号：DE59507514D1

    公开(公告)日：2000-02-03

    申请号：DE59507514

    申请日：1995-09-11

    Applicant: BASF AG

    Inventor： HESSE WERNER ,  TOMMUSCHEIT BIRGIT

    IPC: C04B33/14 ,  B44C1/26 ,  B44C3/04 ,  C04B35/00 ,  C04B35/622

    Abstract: Prodn. of coloured ceramic articles from ≥ 2 granulates contg. Al2O3, zirconium oxide, yttrium oxide, cerium oxide, MgO, SiC and/or Si3N4, a binder, pref. a polyacetal, esp. polyoxymethylene, polyoxymethylene homopolymer and/or a polyoxymethylene copolymer, and colouring particles, pref. a metal (oxide) powder, their precursor cpds. or pigments, esp. lanthanide (oxides), Co, Cr, Cu, Fe, Mn, MO, Nb, Ni, Pb, Si, Sn, Ti, V, W or their oxides, esp. CoO, CO2O3, CO3O4, Cr2O3, Cu2O, CrO, Fe2O3, Fe3O4, MnO, Mn2O3, MnO2, MoO2, MoO3, NbO, NbO2, Nb2O5, NiO, PbO, PbO2, SiO2, SnO, SnO2, TiO, Ti2O3, TiO2, VO2, V2O5, WO2, W25, WO3, metal salts or complexes, esp. carboxylates, carborates, nitrates or acetylacetonates, or speckled pigments from the crystal classes, Baddeleyites, Hematite, Kassiterite, corindum, olivine, rutile, sphene, spinels, or zircons. The compsns. are moulded, dehindered and unsintered. The granules contain different colouring particles and/or different concns. of the particles. At least one of the granulates contain 0.05-20 wt.% of the colouring particles and ≥ 1 granulates contains 30-60 wt.% binder. Also claimed are ceramic articles produced from the granules.

    A method for electrolytic galvanising using electrolytes containing alkane sulphonic acid
    17.
    发明专利
    A method for electrolytic galvanising using electrolytes containing alkane sulphonic acid 未知

    公开(公告)号：AU2001291667B2

    公开(公告)日：2005-07-14

    申请号：AU2001291667

    申请日：2001-07-09

    Applicant: BASF AG

    Inventor： JAGER HANS-ULRICH ,  HESSE WERNER ,  HAAS JENS ,  BRODT GREGOR

    IPC: C25D3/22 ,  C25D3/56 ,  C25D5/26 ,  C25D003/22

    Abstract: The invention relates to a process for the electrolytic coating of metals with zinc or a zinc alloy in which matt surfaces are obtained, by deposition of zinc from an electrolyte solution comprising a zinc salt selected from zinc sulfate or an alkanesulfonate of zinc or mixtures thereof, and, if desired, further metal salts, an acid selected from sulfuric acid or an alkanesulfonic acid or a mixture of the two acids, and at least one additive for improving the surface roughness and preventing dendritic edge growth, selected from nitrogen-containing surface-active compounds, which may be ionic or nonionic, sulfur-containing anionic surface-active compounds, and surface-active compounds based on multifunctional alcohols having at least three hydroxyl groups. The invention furthermore relates to an electrolyte composition for electrolytic coating of metals with zinc or zinc alloys, and to the use of said additives for improving the surface roughness and preventing dendritic edge growth in the electrolytic coating of metals with zinc or a zinc alloy in an alkanesulfonic acid-containing electrolyte.

    PROCEDIMIENTO PARA EL TRATAMIENTO SUPERIOR DE ALUMINIO O DE ALEACIONES DE ALUMINIO MEDIANTE FORMULACIONES QUE CONTIENEN ACIDO ALCANOSULFONICO.
    18.
    发明专利
    PROCEDIMIENTO PARA EL TRATAMIENTO SUPERIOR DE ALUMINIO O DE ALEACIONES DE ALUMINIO MEDIANTE FORMULACIONES QUE CONTIENEN ACIDO ALCANOSULFONICO. 未知

    公开(公告)号：ES2234870T3

    公开(公告)日：2005-07-01

    申请号：ES01960487

    申请日：2001-07-10

    Applicant: BASF AG

    Inventor： HESSE WERNER

    IPC: C25D11/04 ,  C25D11/10 ,  C25D11/12 ,  C25D11/16 ,  C25D11/20

    Abstract: Procedimiento para el tratamiento superficial de aluminio o de aleaciones de aluminio, que comprende los pasos siguientes: a) el tratamiento previo del aluminio o de las aleaciones de aluminio; b) la oxidación anódica del aluminio o de las aleaciones de aluminio (anodización) con corriente continua en un electrolito, conteniendo el electrolito 20 a 100 partes en peso de un ácido alcanosulfónico y 80 a 0 partes en peso de otro ácido seleccionado de entre ácido sulfúrico, ácido fosfórico y ácido oxálico, ascendiendo la suma del ácido alcanosulfónico y del otro ácido a 100 partes en peso y ascendiendo la concentración del ácido alcanosulfónico y del otro ácido a entre 3 y 30% en peso del electrolito, y realizándose la oxidación anódica con una densidad de corriente de 0,5 a 3 A/dm3 y una tensión de 2 a 20 V; c) a continuación, el teñido de la superficie oxidada del aluminio o de las aleaciones de aluminio; d) el acabado de la pieza obtenida según los pasos a),b) y c).

    19.
    发明专利
    未知

    公开(公告)号：AT289591T

    公开(公告)日：2005-03-15

    申请号：AT99961004

    申请日：1999-11-25

    Applicant: BASF AG

    Inventor： HESSE WERNER ,  STERZEL HANS-JOSEF ,  TRAGUT CHRISTIAN

    IPC: C07B61/00 ,  C07C303/16 ,  C07C319/12 ,  C07C319/24 ,  C07C321/14

    Abstract: The invention relates to a process for the preparation of organic disulfides by oxidation of mercaptans with sulfur dissolved in an organic disulfide using an amine as catalyst, where the mercaptans are used as "crude mercaptan stream" from a reaction of alcohols with hydrogen sulfide over a catalyst suitable for mercaptan synthesis. Furthermore, the invention relates to the use of the organic disulfides for the preparation of alkanesulfonic acids.

    20.
    发明专利
    未知

    公开(公告)号：DE50102424D1

    公开(公告)日：2004-07-01

    申请号：DE50102424

    申请日：2001-07-09

    Applicant: BASF AG

    Inventor： BRODT GREGOR ,  HAAS JENS ,  HESSE WERNER ,  JAEGER HANS-ULRICH

    IPC: C25D3/22 ,  C25D3/56 ,  C25D5/26

    Abstract: The invention relates to a process for the electrolytic coating of metals with zinc or a zinc alloy in which matt surfaces are obtained, by deposition of zinc from an electrolyte solution comprising a zinc salt selected from zinc sulfate or an alkanesulfonate of zinc or mixtures thereof, and, if desired, further metal salts, an acid selected from sulfuric acid or an alkanesulfonic acid or a mixture of the two acids, and at least one additive for improving the surface roughness and preventing dendritic edge growth, selected from nitrogen-containing surface-active compounds, which may be ionic or nonionic, sulfur-containing anionic surface-active compounds, and surface-active compounds based on multifunctional alcohols having at least three hydroxyl groups. The invention furthermore relates to an electrolyte composition for electrolytic coating of metals with zinc or zinc alloys, and to the use of said additives for improving the surface roughness and preventing dendritic edge growth in the electrolytic coating of metals with zinc or a zinc alloy in an alkanesulfonic acid-containing electrolyte.

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