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公开(公告)号：ES2113102T3
公开(公告)日：1998-04-16
申请号：ES94915106
申请日：1994-04-23
Applicant: DEGUSSA
Inventor： BERTSCH-FRANK BIRGIT , BEWERSDORF MARTIN , KLASEN CLAAS-JURGEN , LIESER THOMAS , MULLER KLAUS , ROLLMANN JURGEN
Abstract: In the prior art, sodium percarbonate is coated with compounds which produce a stabilizing action in order to increase the shelf life. There is a need for an improved, boron-free, coating for sodium percarbonate. Proposed by the invention is a particle coating containing sodium carbonate plus one or more optionally partly hydrated magnesium compounds, preferably magnesium sulphate, in a single coat or in separate coats. The coating preferably contains two coats. The particles are produced by spraying aqueous solutions containing the coating compounds on to sodium percarbonate in a fluidized bed and at the same time evaporating off the water. Their long shelf life makes particles coated in this way suitable for use in washing, bleaching and cleaning agents.
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公开(公告)号：DE59405122D1
公开(公告)日：1998-02-26
申请号：DE59405122
申请日：1994-04-23
Applicant: DEGUSSA
Inventor： BERTSCH-FRANK BIRGIT , BEWERSDORF MARTIN , KLASEN CLAAS-JUERGEN , LIESER THOMAS , MUELLER KLAUS , ROLLMANN JUERGEN
Abstract: In the prior art, sodium percarbonate is coated with compounds which produce a stabilizing action in order to increase the shelf life. There is a need for an improved, boron-free, coating for sodium percarbonate. Proposed by the invention is a particle coating containing sodium carbonate plus one or more optionally partly hydrated magnesium compounds, preferably magnesium sulphate, in a single coat or in separate coats. The coating preferably contains two coats. The particles are produced by spraying aqueous solutions containing the coating compounds on to sodium percarbonate in a fluidized bed and at the same time evaporating off the water. Their long shelf life makes particles coated in this way suitable for use in washing, bleaching and cleaning agents.
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公开(公告)号：AT156096T
公开(公告)日：1997-08-15
申请号：AT94909085
申请日：1994-02-28
Applicant: DEGUSSA
Inventor： BERTSCH-FRANK BIRGIT , KLASEN CLAAS-JUERGEN , LIESER THOMAS , MUELLER KLAUS , BEWERSDORF MARTIN
Abstract: PCT No. PCT/EP94/00576 Sec. 371 Date Oct. 2, 1995 Sec. 102(e) Date Oct. 2, 1995 PCT Filed Feb. 28, 1994 PCT Pub. No. WO94/24044 PCT Pub. Date Oct. 27, 1994Sodium percarbonate is often used in the form of coated particles to increase its storage stability in detergents. Sodium percarbonate particles coated in accordance with the invention have a coating containing reaction products from the reaction of a dialkali metal tetraborate or alkali metal pentaborate with aqueous hydrogen peroxide. Preferred coating components are: perborax with the formula Na2B4O7xH2O2, where n =2 or 4. The coated sodium percarbonate particles are produced by coating the percarbonate particles using a solution containing the reaction products mentioned above. Detergent, bleaching and cleaning compositions containing sodium percarbonate particles coated in accordance with the invention are distinguished by very high stability in storage.
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14.发明专利
公开(公告)号：PL312608A1
公开(公告)日：1996-04-29
申请号：PL31260894
申请日：1994-04-23
Applicant: DEGUSSA
Inventor： BERTSCH-FRANK BIRGIT , BEWERSDORF MARTIN , KLASEN CLAAS-JUERGEN , LIESER THOMAS , MUELLER KLAUS , ROLLMANN JUERGEN
Abstract: In the prior art, sodium percarbonate is coated with compounds which produce a stabilizing action in order to increase the shelf life. There is a need for an improved, boron-free, coating for sodium percarbonate. Proposed by the invention is a particle coating containing sodium carbonate plus one or more optionally partly hydrated magnesium compounds, preferably magnesium sulphate, in a single coat or in separate coats. The coating preferably contains two coats. The particles are produced by spraying aqueous solutions containing the coating compounds on to sodium percarbonate in a fluidized bed and at the same time evaporating off the water. Their long shelf life makes particles coated in this way suitable for use in washing, bleaching and cleaning agents.
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公开(公告)号：FI954808A0
公开(公告)日：1995-10-09
申请号：FI954808
申请日：1995-10-09
Applicant: DEGUSSA
Inventor： BERTSCH-FRANK BIRGIT , KLASEN CLAAS-JUERGEN , LIESER THOMAS , MUELLER KLAUS , BEWERSDORF MARTIN
Abstract: PCT No. PCT/EP94/00576 Sec. 371 Date Oct. 2, 1995 Sec. 102(e) Date Oct. 2, 1995 PCT Filed Feb. 28, 1994 PCT Pub. No. WO94/24044 PCT Pub. Date Oct. 27, 1994Sodium percarbonate is often used in the form of coated particles to increase its storage stability in detergents. Sodium percarbonate particles coated in accordance with the invention have a coating containing reaction products from the reaction of a dialkali metal tetraborate or alkali metal pentaborate with aqueous hydrogen peroxide. Preferred coating components are: perborax with the formula Na2B4O7xH2O2, where n =2 or 4. The coated sodium percarbonate particles are produced by coating the percarbonate particles using a solution containing the reaction products mentioned above. Detergent, bleaching and cleaning compositions containing sodium percarbonate particles coated in accordance with the invention are distinguished by very high stability in storage.
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Patent Agency Ranking
公开(公告)号：FI954109A0
公开(公告)日：1995-09-01
申请号：FI954109
申请日：1995-09-01
Applicant: DEGUSSA
Inventor： KLASEN CLAAS-JUERGEN , BERTSCH-FRANK BIRGIT , LIESER THOMAS , SCHUBERT PETER , MUELLER KLAUS
Abstract: PCT No. PCT/EP94/00422 Sec. 371 Date Sep. 28, 1995 Sec. 102(e) Date Sep. 28, 1995 PCT Filed Feb. 15, 1994 PCT Pub. No. WO94/20413 PCT Pub. Date Sep. 15, 1994The invention relates to a method for increasing the storage stability of sodium percarbonate (2 Na2CO3.3 H2O2) by coating with a sodium perborate. According to the present invention wet sodium percarbonate salt, obtained by reacting sodium carbonate with hydrogen peroxide in aqueous phase and separating the salt from the aqueous phase, is treated with a solution or suspension containing sodium perborate in a solid-liquid separator by a kind of displacement wash. In contrast to previously known methods, according to the present invention a greater storage stability is attained with smaller quantities of perborate coating.
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17.发明专利
公开(公告)号：CO4180441A1
公开(公告)日：1995-06-07
申请号：CO94030864
申请日：1994-07-14
Applicant: DEGUSSA
Inventor： BERTSCH-FRAN FRANK , BEWERSDORF MARTIN , LIESER THOMAS , MULLER KLAUS HELMUT , ROLLMANN JURGEN
Abstract: PARTICULAS DE PERCARBONATO SODICO RECUBIERTAS, CON UN NUCLEO DE PERCARBONATO SODICO Y UN RECUBRIMIEN- TO CONTENIENDO CARBONATO SODICO, EL CUAL IMPORTA DE 0.5 HASTA 25% POR PESO (CALCULADO LIBRE DE HI- DRATOS) DEL PERCARBONATO SODICO, CARACTERIZADAS PORQUE EL RECUBRIENTO CONTIENE ADICIONALMENTE UNO O VARIOS COMPUESTOS DEL MAGNESIO DE LA SERIE DE LAS SALES DE ACIDO SULFURICO, ACIDO CLOFHIDRICO Y ACIDOS CARBOXILICOS CON 1 A 4 ATOMOS DE C O DE LOS PRODUCTOS DE REACCION DE LAS SALES NOMBRADAS CON EL CARBONATO SODICO Y/OTROS COMPONENTES DE RECU- BRIMIENTO PUEDEN ESTAR PARCIALMENTE HIDRATADOS Y PUEDEN ENCONTRARSE EL CARBONAATO SODICO Y UNO VA- RIOS COMPUESTOS DE MAGNESIO EN UNA SOLA CAPA O CA- PAS SEPARADAS DEL RECUBRIMIENTO. PROCEDIMIENTO PARA LA ELABORACION DE PARTICULAS DE PERCARBONATO SODICO RECUBIERTAS SEGUN LAS REI- VINDICACIONES 1 A 5 POR APLICACION DE UN RECUBRI- MIENTO DE COMPONENTES SOLIDOS SOBRE LAS PARTICU- LAS DE PERCARBONATO SODICO, ABARCANDO EL PULVERI- ZADO DE UNA SOLUCION ACUOSA QUE CONTIENE UNO O VARIOS COMPONENTES DE RECUBRIMIENTO SOLIDOS SOBRE LA PARTICULA A RECUBRIR QUE SE ENCUENTRA EN LECHO FLUIDIZADO Y EVAPORACION DEL AGUA BAJO MANTENIMI- ENTO DE UNA TEMPERATURA EN LECHO FLUIDIZADO DE 30 HASTA 100 GRADOS CENTIGRADOS, CARACTERIZADO PORQUE SOBRE LA PARTICULA A RECUBRIR SE PULVERIZA SIMUL- TANEAMENTE O EN UNA SUCESION DESEADA POR LO MENOS UNA SOLUCION ACUOSA QUE CONTIENE CARBONATO SODICO Y POR LO MENOS UNA SAL DE MAGNESIO DE LA SERIE DEL SULFATO DE Mg , CLORURO DE Mg Y CARBOXILATO DE Mg DE UN ACIDO CARBOXILICO CON 1 HASTA 4 ATOMOS DE C, DONDE LA CANTIDAD TOTAL DE RECUBRIMIENTO APLICADA IMPORTA DE 0.5 HASTA 25% POR PESO (CALCULADO LIBRE DE HIDRATOS), REFERIDO AL PERCARBONATO SODICO. APLICACION DE LAS PARTICULAS DE PERCARBONATO SODI- CO RECUBIERTAS SEGUN LAS REIVINDICACIONES1 A 5 O OBTENIDO SEGUN UN PROCEDIMIENTO DE LAS REIVINDICA- CIONES 6 A 12 COMO COMPONENTE BLANQUEANTE EN PRO- DUCTOS DE LAVADO, DETERGENTES Y BLANQUEANTES, EN PARTICULAR EN PRODUCTOS DE LAVADO, DETERGENTES Y BLANQUANTES QUE CONTIENEN ZEOLITAS.
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公开(公告)号：AU6647994A
公开(公告)日：1995-02-13
申请号：AU6647994
申请日：1994-04-23
Applicant: DEGUSSA
Inventor： BERTSCH-FRANK BIRGIT , BEWERSDORF MARTIN , KLASEN CLAAS-JURGEN , LIESER THOMAS , MULLER KLAUS , ROLLMANN JURGEN
Abstract: In the prior art, sodium percarbonate is coated with compounds which produce a stabilizing action in order to increase the shelf life. There is a need for an improved, boron-free, coating for sodium percarbonate. Proposed by the invention is a particle coating containing sodium carbonate plus one or more optionally partly hydrated magnesium compounds, preferably magnesium sulphate, in a single coat or in separate coats. The coating preferably contains two coats. The particles are produced by spraying aqueous solutions containing the coating compounds on to sodium percarbonate in a fluidized bed and at the same time evaporating off the water. Their long shelf life makes particles coated in this way suitable for use in washing, bleaching and cleaning agents.
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公开(公告)号：DK727888D0
公开(公告)日：1988-12-29
申请号：DK727888
申请日：1988-12-29
Applicant: DEGUSSA
Inventor： BERTSCH-FRANK BIRGIT , MUELLER KLAUS , LIESER THOMAS
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公开(公告)号：DK145788A
公开(公告)日：1988-09-22
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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