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公开(公告)号：DK145788D0
公开(公告)日：1988-03-17
申请号：DK145788
申请日：1988-03-17
Applicant: DEGUSSA
Inventor： DANKOWSKI MANFRED , LIESER THOMAS , PRESCHER GUENTER , LEONHARDT WOLFGANG , DIEHL MANFRED
Abstract: Aqueous bleaching agent suspensions based on a water-soluble peroxycarboxylic acid suspended in a carrier liquid in the presence of an organic thickening agent and of an acidifying agent exhibit an improved storage resistance over known suspensions with this base. This is achieved by means of pourable to pasty bleaching agent suspensions which contain a xanthan polysaccharide or agar polysaccharide as thickening agent and, in addition, a hydrate-forming neutral salt which desensitizes peroxycarboxylic acids. Preferred suspensions exhibit a pH of 2-5 and contain 10-30% by wt. diperoxydodecanedioic acid, 5-20% by wt. sodium sulfate and 0.1-1.0% by wt. xanthan. The use of non-dried, hydrophilized and optionally in situ desensitized peroxycarboxylic acids is especially preferred. The bleaching agent suspensions are prepared by homogeneously suspending the peroxycarboxylic acid in the thickened carrier liquid. The storage-resistant bleaching agent suspensions are used as laundry bleaching agents and for preparing cleaning agents and disinfection agents.
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公开(公告)号：PL203981B1
公开(公告)日：2009-11-30
申请号：PL37591903
申请日：2003-12-02
Applicant: DEGUSSA
Inventor： JAKOB HARALD , ZIMMERMANN KLAUS , OVERDICK RALPH , LEONHARDT WOLFGANG
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公开(公告)号：ES2277130T3
公开(公告)日：2007-07-01
申请号：ES03782269
申请日：2003-12-02
Applicant: DEGUSSA
Inventor： JAKOB HARALD , ZIMMERMANN KLAUS , OVERDICK RALPH , LEONHARDT WOLFGANG
Abstract: Compuestos peroxigenados particulados recubiertos, en particular partículas de percarbonato de sodio recubiertas, con una liberación retardada del oxígeno activo en la fase acuosa, que comprenden al menos dos capas de envoltura sobre un núcleo del compuesto peroxigenado, en donde una capa íntima, que constituye 2 a 20% en peso, basado en las partículas recubiertas, comprende al menos una sal inorgánica formadora de hidrato y una capa externa comprende un silicato de metal alcalino con un módulo de SiO2 a M2O (M = metal alcalino) mayor que 2, 5, caracterizados porque la capa externa comprende como el componente principal silicato de metal alcalino en una cantidad de 0, 2 a 3% en peso, basado en las partículas recubiertas, y se ha preparado utilizando una solución acuosa que contiene silicato de metal alcalino con una concentración comprendida en el intervalo de 2 a 20% en peso de silicato de metal alcalino.
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14.发明专利
公开(公告)号：CA2511438A1
公开(公告)日：2004-07-08
申请号：CA2511438
申请日：2003-12-02
Applicant: DEGUSSA
Inventor： JAKOB HARALD , ZIMMERMANN KLAUS , OVERDICK RALPH , LEONHARDT WOLFGANG
Abstract: The invention relates to coated peroxygen compounds, in particular coated sodium percarbonate particles, with a delayed release of the active oxygen ( = increased dissolving time). Particles according to the invention comprise an innermost shell layer, comprising at least one hydrate-forming inorganic sal t, and an outer shell layer, comprising 0.2 to 3 wt.% alkali metal silicate wit h a modulus of greater than 2.5, in particular 3 to 5, the outer layer having been prepared using an alkali metal silicate solution with an alkali metal silicate concentration in the range from 2 to 20 wt.%. By lowering the alkal i metal silicate concentration in the solution to be used, the dissolving time can be increased for the same shell amount. The dissolving time can be increased greatly by the layer sequence and the concentration of the solutio n, at a low amount of alkali metal silicate.
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公开(公告)号：BR0116410A
公开(公告)日：2003-11-11
申请号：BR0116410
申请日：2001-11-27
Applicant: DEGUSSA
Inventor： SCHEIBE MICHAEL , TRAEUMER DIETMAR , KOHLEN RAINER , LEONHARDT WOLFGANG , KAISER LOTHAR
Abstract: A process is provided for the safe storage of sodium percarbonate in a bulk container that is substantially closed to the ambient atmosphere. A temperature is measured at at least one position inside the sodium percarbonate stored in bulk and, with an increase in temperature within the range of 0.5 to 10° C. per day, in particular 1 to 5° C. per day, dry air is passed periodically or continuously through the bulk material until the increase in temperature has fallen to a value of less than 1° C. per day in particular less than 0.5° C. per day.
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Patent Agency Ranking
公开(公告)号：DE10064821A1
公开(公告)日：2002-06-27
申请号：DE10064821
申请日：2000-12-22
Applicant: DEGUSSA
Inventor： SCHEIBE MICHAEL , TRAEUMER DIETMAR , KOHLEN RAINER , LEONHARDT WOLFGANG , KAISER LOTHAR
Abstract: Process for safely storing sodium percarbonate in a container closed to the environment comprises measuring the temperature at one point within the sodium percarbonate stored in a loose bed; and periodically or continuously passing dry air through the bed which experiences a temperature rise of 0.5-10 (1-5) deg C per day, until the temperature rise is reduced to less than 1 deg C per day. Preferred Features: The sodium percarbonate is stored at an average temperature of less than 40, especially 15-30 deg C. The dry air has a dew point of -20 to +5 deg C. The sodium percarbonate is stored in a silo having a volume of at least 10 m , 10-250 m . The sodium percarbonate is in granulated form with a stabilizing encapsulating layer.
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公开(公告)号：NO178831C
公开(公告)日：1996-06-12
申请号：NO922225
申请日：1992-06-05
Applicant: DEGUSSA
Inventor： LEONHARDT WOLFGANG , SCHMIDT KURT , SUSS HANS ULRICH , GLAUM HOLGER
IPC: D21C9/10
Abstract: A process is disclosed for bleaching wood pulp, cellulose or used paper by treatment the fibre material to be bleached before the bleaching steps with a natural or synthetic zeolite or a layer lattice silicate and an easily decomposable organic complex forming agent, e.g. citric acid.
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公开(公告)号：NO178831B
公开(公告)日：1996-03-04
申请号：NO922225
申请日：1992-06-05
Applicant: DEGUSSA
Inventor： LEONHARDT WOLFGANG , SCHMIDT KURT , SUSS HANS ULRICH , GLAUM HOLGER
IPC: D21C9/10
Abstract: A process is disclosed for bleaching wood pulp, cellulose or used paper by treatment the fibre material to be bleached before the bleaching steps with a natural or synthetic zeolite or a layer lattice silicate and an easily decomposable organic complex forming agent, e.g. citric acid.
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公开(公告)号：CA2063662C
公开(公告)日：1996-01-09
申请号：CA2063662
申请日：1992-03-20
Applicant: DEGUSSA
Inventor： LEONHARDT WOLFGANG , BERGMANN ROLAND
Abstract: Aqueous suspension of a silicate capable of binding calcium ions, containing, based on the total weight of the suspension: A) as silicate, a compound corresponding to Formula I: (Cat2/nO)x dispersing component, a mixture of at least two oxoalcohol ethoxylates corresponding to Formula II: R-(OCH2CH2)n-OH (II), wherein R = C10-Cl5 alkyl having a degree of branching of 0 to 90% linear and 100 to 10% single methyl branches, n = 3 - 5.25 mol EO in Component 1, and n = 5.5 - 7.0 mol in Component 2; and C) a polyethylene glycol having an average molecular weight of from 200 to 2000.
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公开(公告)号：LV5281A3
公开(公告)日：1993-10-10
申请号：LV920373
申请日：1992-12-22
Applicant: DEGUSSA
Inventor： SAX BEATA-M , LEONHARDT WOLFGANG , KISS AKOS , LORTZ WOLFGANG , ROEBKE WOLFGANG , DIETRICH CLAUS
IPC: C11D3/08
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