公开(公告)号：ES2314833T3

公开(公告)日：2009-03-16

申请号：ES06117988

申请日：2006-07-27

Applicant: EVONIK DEGUSSA GMBH

Inventor： LEININGER STEFAN ,  JAKOB HARALD ,  OVERDICK RALPH

IPC: C11D3/39 ,  C01B15/10 ,  C11D3/02 ,  C11D3/12 ,  C11D17/00

Abstract: Partícula de percarbonato de sodio con una capa de envoltura, caracterizada porque la capa de envoltura contiene de 70 a 99,8% en peso de sulfato de sodio anhidro y de 0,2 a 20% en peso de un borato de sodio, y la proporción en peso de la capa de envoltura es de 1 a 10%, referida a la masa de la partícula de percarbonato de sodio.

公开(公告)号：MX2009000765A

公开(公告)日：2009-01-30

申请号：MX2009000765

申请日：2007-07-04

Applicant: EVONIK DEGUSSA GMBH

Inventor： JAKOB HARALD ,  OVERDICK RALPH ,  LEININGER STEFAN

IPC: C11D3/39 ,  C01B15/10 ,  C11D3/02 ,  C11D17/00

Abstract: Partículas de precarbonato de sodio con una capa de recubrimiento que contienen sulfato de sodio en forma de fase de alta temperatura de sulfato de sodio y/o una fase de alta temperatura de una sal doble que tienen la composición Na4(SO4)1+n(CO3)1+n en donde n es desde 0 a 0.5, exhibe estabilidad en almacenamiento en preparaciones de agente detergente y limpieza, en comparación con partículas de percarbonato de sodio con una capa de recubrimiento que contiene sulfato de sodio solo en forma de sulfato de sodio (V) o burkeita.

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

IPC: C11D3/39 ,  C01B15/10 ,  C11D17/00

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.

公开(公告)号：DE60308901T2

公开(公告)日：2007-05-24

申请号：DE60308901

申请日：2003-12-11

Applicant: DEGUSSA

Inventor： KUNZ ULRIKE ,  STOSCHEK SILKE ,  ZIMMERMANN KLAUS ,  OVERDICK RALPH ,  FENDER MICHAEL ,  JAKOB HARALD

IPC: C11D3/39 ,  C11D17/00

Abstract: The invention relates to liquid detergent and cleaning agent compositions of high storage stability. They comprise a liquid medium with a water content of up to 15 wt. % and particulate coating bleaching agents suspended therein. The bleaching agent has a dissolving time of at least 5 minutes and a coating of at least two layers: The innermost layer comprises one or more hydrate-forming inorganic salts as the main component(s), and an outer layer, which makes up 0.2 to 5 wt. % of the coated bleaching agent, comprises alkali metal silicate(s) with a modulus of SiO2 to M2O (M=alkali metal) of greater than 2.5 as the main component(s). Preferred compositions comprise sodium percarbonate with an innermost layer of substantially sodium sulfate and an outermost layer of substantially 0.5 to 1.5 wt. % sodium silicate (modulus 3.2 to 4.2) as the bleaching agent.

公开(公告)号：DE60308901D1

公开(公告)日：2006-11-16

申请号：DE60308901

申请日：2003-12-11

Applicant: DEGUSSA

Inventor： KUNZ ULRIKE ,  STOSCHEK SILKE ,  ZIMMERMANN KLAUS ,  OVERDICK RALPH ,  FENDER MICHAEL ,  JAKOB HARALD

IPC: C11D3/39 ,  C11D17/00

Abstract: The invention relates to liquid detergent and cleaning agent compositions of high storage stability. They comprise a liquid medium with a water content of up to 15 wt. % and particulate coating bleaching agents suspended therein. The bleaching agent has a dissolving time of at least 5 minutes and a coating of at least two layers: The innermost layer comprises one or more hydrate-forming inorganic salts as the main component(s), and an outer layer, which makes up 0.2 to 5 wt. % of the coated bleaching agent, comprises alkali metal silicate(s) with a modulus of SiO2 to M2O (M=alkali metal) of greater than 2.5 as the main component(s). Preferred compositions comprise sodium percarbonate with an innermost layer of substantially sodium sulfate and an outermost layer of substantially 0.5 to 1.5 wt. % sodium silicate (modulus 3.2 to 4.2) as the bleaching agent.

公开(公告)号：AT341605T

公开(公告)日：2006-10-15

申请号：AT03782360

申请日：2003-12-11

Applicant: DEGUSSA

Inventor： KUNZ ULRIKE ,  STOSCHEK SILKE ,  ZIMMERMANN KLAUS ,  OVERDICK RALPH ,  FENDER MICHAEL ,  JAKOB HARALD

IPC: C11D3/39 ,  C11D17/00

Abstract: The invention relates to liquid detergent and cleaning agent compositions of high storage stability. They comprise a liquid medium with a water content of up to 15 wt. % and particulate coating bleaching agents suspended therein. The bleaching agent has a dissolving time of at least 5 minutes and a coating of at least two layers: The innermost layer comprises one or more hydrate-forming inorganic salts as the main component(s), and an outer layer, which makes up 0.2 to 5 wt. % of the coated bleaching agent, comprises alkali metal silicate(s) with a modulus of SiO2 to M2O (M=alkali metal) of greater than 2.5 as the main component(s). Preferred compositions comprise sodium percarbonate with an innermost layer of substantially sodium sulfate and an outermost layer of substantially 0.5 to 1.5 wt. % sodium silicate (modulus 3.2 to 4.2) as the bleaching agent.

公开(公告)号：PL368593A1

公开(公告)日：2005-04-04

申请号：PL36859302

申请日：2002-07-04

Applicant: DEGUSSA

Inventor： JAKOB HARALD ,  HESSBERGER WALDEMAR ,  LATTICH JUERGEN ,  OVERDICK RALPH

IPC: C01B15/10 ,  C11D3/39

Abstract: The invention relates to a process for the preparation of coated granular sodium percarbonate having a low TAM value. The preparation is carried out by fluidized-bed spray granulation at a temperature T G in the range from 45 to 75° C., and the coating is effected by the spray application of an aqueous solution containing at least one coating component in a fluidized bed at a temperature T U in the range from 35 to 100° C. According to the invention, a) after the fluidized-bed spray granulation but before the coating, drying is carried out at T NT of greater than T G , or b) the fluidized-bed granulation is carried out in at least two steps at T G1 , T G2 . . . T Gn , T G2 or T Gn being higher than T G 1, and drying being unnecessary if 2/3 of the granulate have been formed at T G 1, or c) drying takes place not after the granulation but after the coating, at T UNT , T UNT being at least 20° C. higher than T G .

公开(公告)号：AT276198T

公开(公告)日：2004-10-15

申请号：AT01271979

申请日：2001-10-26

Applicant: DEGUSSA

Inventor： JAKOB HARALD ,  HESSBERGER WALDEMAR ,  KAISER LOTHAR ,  LATTICH JUERGEN ,  OVERDICK RALPH

IPC: C01B15/00 ,  C01B15/10

Abstract: The invention relates to uncoated and/or coated sodium percarbonate with improved internal stability and storage stability; and, a process that provides uncoated and/or coated sodium percarbonate with improved internal stability and storage stability.

公开(公告)号：AU2003290007A1

公开(公告)日：2004-07-14

申请号：AU2003290007

申请日：2003-12-11

Applicant: DEGUSSA

Inventor： KUNZ ULRIKE ,  STOSCHEK SILKE ,  ZIMMERMANN KLAUS ,  OVERDICK RALPH ,  FENDER MICHAEL ,  JAKOB HARALD

IPC: C11D3/39 ,  C11D17/00

Abstract: The invention relates to liquid detergent and cleaning agent compositions of high storage stability. They comprise a liquid medium with a water content of up to 15 wt. % and particulate coating bleaching agents suspended therein. The bleaching agent has a dissolving time of at least 5 minutes and a coating of at least two layers: The innermost layer comprises one or more hydrate-forming inorganic salts as the main component(s), and an outer layer, which makes up 0.2 to 5 wt. % of the coated bleaching agent, comprises alkali metal silicate(s) with a modulus of SiO2 to M2O (M=alkali metal) of greater than 2.5 as the main component(s). Preferred compositions comprise sodium percarbonate with an innermost layer of substantially sodium sulfate and an outermost layer of substantially 0.5 to 1.5 wt. % sodium silicate (modulus 3.2 to 4.2) as the bleaching agent.

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

IPC: C01B15/10 ,  C11D3/39 ,  C11D17/00

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.