Patents by Inventor Ralph Overdick
Ralph Overdick has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20130059765Abstract: Bleach particles with a core of sodium percarbonate, an inner coating layer with at least 50% by weight of sodium sulfate in the form of thenardite or burkeite and an outer coating layer comprising a water-soluble binder and a perhydrolyzable N-acyl compound or O-acyl compound as bleach activator are storage-stable, are suitable for silo storage and can be transported and handled safely even in a hot and humid climate.Type: ApplicationFiled: April 27, 2011Publication date: March 7, 2013Applicant: Evonik Degussa GmbHInventors: Stefan Leininger, Harald Jakob, Ralph Overdick
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Patent number: 8153576Abstract: Sodium percarbonate particles with a coating layer which comprises from 70 to 99.8% by weight of anhydrous sodium sulfate and from 0.2 to 20% by weight of a sodium borate, and whose proportion by weight is from 1 to 10% based on the mass of the sodium percarbonate particle, exhibit a high storage stability in detergent and cleaning composition formulations through a synergistic effect of sodium sulfate and sodium borate on the storage stability, and at the same time only have a small content of boron.Type: GrantFiled: June 27, 2007Date of Patent: April 10, 2012Assignee: Evonik Degussa GmbHInventors: Stefan Leininger, Harald Jakob, Ralph Overdick
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Patent number: 7956027Abstract: Sodium percarbonate particles with a coating layer comprising sodium sulfate in the form of a high-temperature phase of sodium sulfate and/or of a high-temperature phase of a double salt of composition Na4(SO4)1+n(CO3)1?n where n is from 0 to 0.5 have an improved storage stability in detergent and cleaning composition formulations as compared with sodium percarbonate particles which comprise sodium sulfate in the coating layer only in the form of sodium sulfate (V) or burkeite.Type: GrantFiled: July 4, 2007Date of Patent: June 7, 2011Assignee: Evonik Degussa GmbHInventors: Stefan Leininger, Harald Jakob, Ralph Overdick
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Publication number: 20090137448Abstract: Sodium percarbonate particles with a coating layer comprising sodium sulfate in the form of a high-temperature phase of sodium sulfate and/or of a high-temperature phase of a double salt of composition Na4(SO4)1+n(CO3)1?n where n is from 0 to 0.5 have an improved storage stability in detergent and cleaning composition formulations as compared with sodium percarbonate particles which comprise sodium sulfate in the coating layer only in the form of sodium sulfate (V) or burkeite.Type: ApplicationFiled: January 26, 2009Publication date: May 28, 2009Applicant: Evonik Degussa GmbHInventors: Stefan Leininger, Harald Jakob, Ralph Overdick
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Publication number: 20090137447Abstract: Sodium percarbonate particles with a coating layer which comprises from 70 to 99.8% by weight of anhydrous sodium sulfate and from 0.2 to 20% by weight of a sodium borate, and whose proportion by weight is from 1 to 10% based on the mass of the sodium percarbonate particle, exhibit a high storage stability in detergent and cleaning composition formulations through a synergistic effect of sodium sulfate and sodium borate on the storage stability, and at the same time only have a small content of boron.Type: ApplicationFiled: January 26, 2009Publication date: May 28, 2009Applicant: Evonik Degussa GmbHInventors: Stefan Leininger, Harald Jakob, Ralph Overdick
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Patent number: 7435714Abstract: 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.Type: GrantFiled: December 11, 2003Date of Patent: October 14, 2008Assignee: Evonik Degussa GmbHInventors: Ulrike Kottke, Silke Stoschek, Klaus Zimmermann, Ralph Overdick, Michael Fender, Harald Jakob
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Hydrosoluble polymers exhibiting improved solubility characteristics, the production and use thereof
Publication number: 20070184266Abstract: The invention relates to hydrosoluble polymers exhibiting improved solubility characteristics, the production and use thereof. The inventive polymers can be of natural or synthetic nature and are provided with a water glass-containing coating. They are used, for example for water and wastewater treatment.Type: ApplicationFiled: April 6, 2004Publication date: August 9, 2007Inventors: Norbert Steiner, Gregor Herth, Klaus Zimmermann, Harald Jakob, Ralph Overdick -
Patent number: 7241433Abstract: 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 TG 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 TU 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 TNT of greater than TG, or b) the fluidized-bed granulation is carried out in at least two steps at TG1, TG2 . . . TGn, TG2 or TGn being higher than TG1, and drying being unnecessary if ? of the granulate have been formed at TG1, or c) drying takes place not after the granulation but after the coating, at TUNT, TUNT being at least 20° C. higher than TG.Type: GrantFiled: August 20, 2002Date of Patent: July 10, 2007Assignee: Degussa GmbHInventors: Harald Jakob, Waldemar Hessberger, Juergen Lattich, Ralph Overdick
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Publication number: 20060148669Abstract: 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.Type: ApplicationFiled: December 11, 2003Publication date: July 6, 2006Applicant: Degussa AGInventors: Nee Kunz Ulrike Kottke, Silke Stoschek, Klaus Zimmermann, Ralph Overdick, Michael Fender, Harald Jakob
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Publication number: 20060063693Abstract: 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 salt, and an outer shell layer, comprising 0.2 to 3 wt. % alkali metal silicate with 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 alkali 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 solution, at a low amount of alkali metal silicate.Type: ApplicationFiled: December 2, 2003Publication date: March 23, 2006Applicant: Degussa AGInventors: Harald Jakob, Klaus Zimmermann, Ralph Overdick, Wolfgang Leonhardt
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Patent number: 6942845Abstract: 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.Type: GrantFiled: December 26, 2001Date of Patent: September 13, 2005Assignee: Degussa AGInventors: Harald Jakob, Waldemar Hessberger, Lothar Kaiser, Juergen Lattich, Ralph Overdick
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Publication number: 20030104967Abstract: 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 TG 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 TU 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 TNT of greater than TG, or b) the fluidized-bed granulation is carried out in at least two steps at TG1, TG2 . . . TGn, TG2 or TGn being higher than TG1, and drying being unnecessary if ⅔ of the granulate have been formed at TG1, or c) drying takes place not after the granulation but after the coating, at TUNT, TUNT being at least 20° C. higher than TG.Type: ApplicationFiled: August 20, 2002Publication date: June 5, 2003Applicant: DEGUSSA AGInventors: Harald Jakob, Waldemar Hessberger, Juergen Lattich, Ralph Overdick
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Publication number: 20020127168Abstract: 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.Type: ApplicationFiled: December 26, 2001Publication date: September 12, 2002Applicant: DE GUSSA AGInventors: Harald Jakob, Waldemar Hessberger, Lothar Kaiser, Juergen Lattich, Ralph Overdick
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Patent number: 6239095Abstract: A process for the preparation of coated peroxygen compounds, in particular sodium percarbonate, by fluidized bed coating. By using a fluidized bed reactor with a radial inflow base, the passage openings of which allow the fluidized bed gas to emerge in the region of the opening at an angle of less than 35°, measured with respect to the horizontal, in the form of directed part streams, and in which are arranged spray nozzles, the pulse of which points in the same direction as the pulse of the fluidizing gas, it is possible to obtain products with an increased active oxygen stability. A circular reactor, the inflow base of which has lamellae overlapping like turbine blades and nozzles aligned in the direction of rotation of the fluidized bed is preferred.Type: GrantFiled: July 6, 1999Date of Patent: May 29, 2001Assignee: Degussa-Huls AktiengesellschaftInventors: Birgit Bertsch-Frank, Martin Bewersdorf, Lothar Kaiser, Rainer Kohlen, Ralph Overdick, Michael Scheibe