Patents by Inventor Werner Doetsch
Werner Doetsch 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).
-
Patent number: 8021609Abstract: A highly stabilized hydrogen peroxide useful for chemical sterilization of packaging materials in high-speed aseptic packaging plants.Type: GrantFiled: March 19, 2004Date of Patent: September 20, 2011Assignee: Solvay Chemicals GmbHInventors: Werner Doetsch, Otmar Woost
-
Patent number: 7488439Abstract: Dust-free alkaline earth peroxides are obtained by mixing alkaline earth peroxides with a compacting aid and dry-compacted in a compactor, for example, a roller press. Examples of suitably useful compacting aids include sodium bicarbonate, cellulose, magnesium montanate and cross-linked silicone compounds.Type: GrantFiled: April 18, 2005Date of Patent: February 10, 2009Assignee: Solvay Chemicals GmbHInventors: Werner Doetsch, Ernst Buchholz
-
Patent number: 7425228Abstract: Homogeneous, boron-doped alkaline earth peroxides and mixed alkaline earth peroxides, methods for the production thereof, and use thereof as oxygenating agents for agricultural purposes.Type: GrantFiled: February 20, 2004Date of Patent: September 16, 2008Assignee: Solvay Chemicals GmbHInventors: Werner Doetsch, Gabriele Wasem
-
Publication number: 20050239679Abstract: Dust-free alkaline earth peroxides are obtained by mixing alkaline earth peroxides with a compacting aid and dry-compacted in a compactor, for example, a roller press. Examples of suitably useful compacting aids include sodium bicarbonate, cellulose, magnesium montanate and cross-linked silicone compounds.Type: ApplicationFiled: April 18, 2005Publication date: October 27, 2005Applicant: Solvay Interox GmbHInventors: Werner Doetsch, Ernst Buchholz
-
Publication number: 20040247755Abstract: A highly stabilized hydrogen peroxide useful for chemical sterilization of packaging materials in high-speed aseptic packaging plants.Type: ApplicationFiled: March 19, 2004Publication date: December 9, 2004Applicant: Solvay Interox GmbHInventors: Werner Doetsch, Otmar Woost
-
Publication number: 20040221632Abstract: Homogeneous, boron-doped alkaline earth peroxides and mixed alkaline earth peroxides, methods for the production thereof, and use thereof as oxygenating agents for agricultural purposes.Type: ApplicationFiled: February 20, 2004Publication date: November 11, 2004Applicant: Solvay Interox GmbHInventors: Werner Doetsch, Gabriele Wasem
-
Patent number: 6547490Abstract: Coated metal peroxides, their preparation and use, in which metal peroxides are coated with silicone compounds from selected from the group siliconates, hydrogen-polysiloxanes, siloxanes, silicone resin emulsions, silane/siloxane emulsions, silane/siloxane mixtures, silicone microemulsion concentrates, and silicic acid ester mixtures.Type: GrantFiled: July 18, 2001Date of Patent: April 15, 2003Assignee: Solvay Interox GmbHInventors: Werner Doetsch, Gabriele Wasem
-
Publication number: 20020051744Abstract: Coated metal peroxides, their preparation and use, in which metal peroxides are coated with silicone compounds from selected from the group siliconates, hydrogen-polysiloxanes, siloxanes, silicone resin emulsions, silane/siloxane emulsions, silane/siloxane mixtures, silicone microemulsion concentrates, and silicic acid ester mixtures.Type: ApplicationFiled: July 18, 2001Publication date: May 2, 2002Inventors: Werner Doetsch, Gabriele Wasem
-
Patent number: 6280495Abstract: A homogeneous calcium/magnesium peroxide, its manufacture and use are described. The new calcium/magnesium peroxide is suitable in particular as an additive used as source of oxygen and acid buffer, e.g. in the application, processing, treatment and/or disposal of various biomaterials.Type: GrantFiled: December 15, 2000Date of Patent: August 28, 2001Assignee: Solvay Interox GmbHInventors: Werner Doetsch, Otto Caspar
-
Patent number: 6248707Abstract: A method for the “dry” production of sodium percarbonate (dry process), in which monohydrate crystals of sodium carbonate are reacted with a quasi-stoichiometric quantity of concentrated aqueous hydrogen peroxide solution, relative to the quantity of active oxygen required in the sodium percarbonate to be produced. This method can be combined to great advantage with subsequent compaction of the sodium percarbonate obtained. Sodium percarbonate products containing varying concentrations of active oxygen of at least 10 weight percent, particularly high active oxygen concentrations of above 14.5 weight percent, can be produced. The resulting sodium percarbonate products are distinguished in that they have remarkably advantageous dissolution rates, stabilities and compatibility with detergent bases, and are superior to conventional sodium percarbonates obtained, for example, by a crystallization process.Type: GrantFiled: August 13, 1999Date of Patent: June 19, 2001Assignee: Solvay Interox GmbHInventors: Werner Doetsch, Manfred Mathes, Helmut Honig, Gabriele Wasem
-
Patent number: 6228342Abstract: A flexible process for production of homogeneous sodium precarbonate particles or granules according to which a reaction slurry with an average to high solids content is prepared initially from an aqueous hydrogen peroxide solution of up to maximum 50% by weight and solid soda, this reaction slurry, which optionally may be finely ground by wet comminution, being subsequently subjected immediately to short-term drying, preferably spray drying, and, optionally, granulation. The process enables production, in an efficient manner, of essentially homogeneous sodium percarbonate particles or granules with variable active oxygen contents of 10 to 14.5% by weight and grain sizes and bulk densities which are variable within wide ranges.Type: GrantFiled: February 6, 1998Date of Patent: May 8, 2001Assignee: Solvay Interox GmbHInventors: Manfred Mathes, Werner Doetsch
-
Patent number: 6193776Abstract: A homogeneous calcium/magnesium peroxide, its manufacture and use are described. The new calcium/magnesium peroxide is suitable in particular as an additive used as source of oxygen and acid buffer, e.g. in the application, processing, treatment and/or disposal of various biomaterials.Type: GrantFiled: December 5, 1997Date of Patent: February 27, 2001Assignee: Solvay Interox GmbHInventors: Werner Doetsch, Otto Caspar
-
Patent number: 5681807Abstract: The use of lactobionic acid, lactobionic acid salts and/or lactobionic acid derivatives as covering material is disclosed for coating alkali metal peroxy salts, in particular for coating sodium percarbonate. In an advantageous alternative of the invention, alkali metal peroxy salts are provided with a covering layer that contains as covering materials lactobionic acid and/or lactobionic acid salt mixed with boric acid and/or a boric acid salt as additional covering material. This coating stabilizes the alkali metal peroxy salts and protects them against humidity and decomposition. In another advantageous alternative, lactobionic acid, lactobionic acid salts and/or lactobionic acid derivatives are used in combination with or in particular mixed with an inorganic mineral salt mixture of alkali metal sulphate and alkali metal chloride as additional covering material for coating alkali metal peroxy salts, in particular for coating sodium percarbonate.Type: GrantFiled: October 1, 1996Date of Patent: October 28, 1997Assignee: Solvay Interox GmbHInventors: Helmut Honig, Werner Doetsch, Manfred Mathes, Klaus-Guenter Gerling, Gerd Hecken
-
Patent number: 5478488Abstract: Particulate alkali metal peroxy salts are stabilized by coating with a crystallized mineral salt mixture of alkali metal sulfate and alkali metal chloride which optionally may additionally contain alkali metal silicate. Particularly suitable alkali metal peroxy salts include peroxypyrophosphate, peroxytripolyphosphate, peroxymonosulfate and peroxycarbonate. The coated peroxy salts are incorporated in bleaching and detergent compositions.Type: GrantFiled: May 6, 1994Date of Patent: December 26, 1995Assignee: Solvay Interox GmbHInventors: Werner Doetsch, Manfred Mathes, Gerd Hecken
-
Patent number: 5399328Abstract: A process is described for preparing peroxyborate agglomerates having an active oxygen content of at least 14% by weight in which amorphous primary particles composed of peroxyborate prepared by a spray drying process are subjected to compacting pressing-agglomeration. Briquettes, compressed strips and tablets can be obtained which can be comminuted, if desired, to peroxyborate granules of desired particle size and bulk density. Advantageous, optionally colored, peroxyborate agglomerates, particularly peroxyborate granules are prepared. Preferred agglomerates and granules are composed of sodium peroxyborates.Type: GrantFiled: February 6, 1991Date of Patent: March 21, 1995Assignee: Peroxid-Chemie GmbHInventors: Werner Doetsch, Richard Roesler, Werner Zeiss, Rudolf Siegel
-
Patent number: 5346680Abstract: Sodium percarbonate particles stabilized by being coated with a solid coating material which contains a mixture of sodium carbonate and sodium chloride, optionally together with one or more auxiliary agents used in the manufacture of sodium percarbonate.Type: GrantFiled: October 18, 1993Date of Patent: September 13, 1994Assignee: Solvay Interox GmbHInventors: Richard Roesler, Alfred Soentgerath, Werner Doetsch, Gerd Hecken
-
Patent number: 5290476Abstract: A process for preparing microcrystalline perborate hydrate products and highly concentrated, storage stable aqueous solutions used for this purpose which have a stable active oxygen content and a boron content of 3 to 8% by wt. based on the total weight of the solution. The products of the invention are suitable for numerous uses in the field of bleaching agent, disinfectant and liquid detergent formulations, and other fields of use.Type: GrantFiled: June 3, 1991Date of Patent: March 1, 1994Assignee: Peroxid-Chemie GmbHInventors: Richard Roesler, Werner Doetsch, Werner Zeiss, Rudolf Siegel
-
Patent number: 5244644Abstract: A process for producing an alkali metal carbonate peroxyhydrate having improved storage stability by mixing particles of an alkali metal carbonate peroxyhydrate with an effective storage stability improving amount of a powdered fatty acid metal salt.Type: GrantFiled: March 5, 1992Date of Patent: September 14, 1993Assignee: Peroxid-Chemie GmbHInventor: Werner Doetsch
-
Patent number: 5203877Abstract: A process for producing sodium perborate monohydrate agglomerates or granules in which primary particles of sodium perborate monohydrate produced from sodium perborate tetrahydrate by a dehydration process are subjected to compacting pressing agglomeration, and the resulting agglomerates are subsequently comminuted to granules.Type: GrantFiled: August 2, 1991Date of Patent: April 20, 1993Assignee: Peroxid-Chemie GmbHInventors: Werner Doetsch, Richard Roesler, Hans-Ludwig Pfeifer
-
Patent number: 4681697Abstract: A process for producing a solid, cold-water soluble, sulfate containing aluminum chloride composition suitable for use as a waste water clarifying agent comprising introducing alkali aluminate, sulfuric acid, hydrochloric acid and hydrated aluminum oxide into a spray drier and recovering the resulting solid product.Type: GrantFiled: April 22, 1986Date of Patent: July 21, 1987Assignee: Kali-Chemie AktiengesellschaftInventors: Werner Doetsch, Rudolf Siegel