Patents by Inventor Dieter Munchow
Dieter Munchow 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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Patent number: 9296900Abstract: The invention relates to a method for producing surface-modified inorganic fillers or pigments of a desired particle size. Said method is characterized in that filler or pigment slurries of inorganic fillers or pigments are milled to the desired particle size under the action of compressive and shear forces using polymer dispersions, whereby the fillers and/or pigments are additionally brought into contact with conventional milling auxiliary agents and/or dispersants (active agent) in a quantity of between 0.1 and 2.0 wt. %, in relation to the fillers or pigments. The invention also relates to the fillers and pigments that are obtained by said method and to their use for producing dispersion inks, adhesives, coatings or coating compounds for the paper industry, in particular coating compounds used in various industry segments, such as sheet fed offset printing, roll offset printing, gravure printing and for the production of cardboard and special papers.Type: GrantFiled: May 10, 2005Date of Patent: March 29, 2016Assignee: Alpha Calcit Fullstoff Gesellschaft mbHInventor: Dieter Münchow
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Patent number: 8926747Abstract: The invention relates to a process for the preparation of coating dispersions for use in the paper industry by co-grinding natural calcium carbonate (GCC) and precipitated calcium carbonate (PCC), characterized in that powdery GCC is co-ground with a slurry containing from 5 to 70% by weight of PCC to obtain a particle size distribution of the calcium carbonate with at least 90% by weight of smaller than 5 ?m, at least 70% by weight of smaller than 2 ?m, and at least 20% by weight of smaller than 1 ?m, with a weight average particle size within a range of from 0.7 to 3 ?m.Type: GrantFiled: January 21, 2013Date of Patent: January 6, 2015Assignee: Alpha Calcit Fullstoff Gesellschaft MGHInventor: Dieter Münchow
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Publication number: 20130131249Abstract: The invention relates to a process for the preparation of coating dispersions for use in the paper industry by co-grinding natural calcium carbonate (GCC) and precipitated calcium carbonate (PCC), characterized in that powdery GCC is co-ground with a slurry containing from 5 to 70% by weight of PCC to obtain a particle size distribution of the calcium carbonate with at least 90% by weight of smaller than 5 ?m, at least 70% by weight of smaller than 2 ?m, and at least 20% by weight of smaller than 1 ?m, with a weight average particle size within a range of from 0.7 to 3 ?m.Type: ApplicationFiled: January 21, 2013Publication date: May 23, 2013Inventor: Dieter MÜNCHOW
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Patent number: 8382891Abstract: The invention relates to a process for the preparation of coating dispersions for use in the paper industry by co-grinding natural calcium carbonate (GCC) and precipitated calcium carbonate (PCC), characterized in that powdery GCC is co-ground with a slurry containing from 5 to 70% by weight of PCC to obtain a particle size distribution of the calcium carbonate with at least 90% by weight of smaller than 5 ?m, at least 70% by weight of smaller than 2 ?m, and at least 20% by weight of smaller than 1 ?m, with a weight average particle size within a range of from 0.7 to 3 ?m.Type: GrantFiled: June 12, 2008Date of Patent: February 26, 2013Assignee: Alpha Calcit Fullstoff Gesellschaft mbHInventor: Dieter Munchow
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Patent number: 7887629Abstract: The core of the present invention resides in supplying pigment in a kind of “basic grade”, preferably as a solid, and milling in an aqueous phase in situ in a satellite milling plant to obtain the desired whiteness and grain size. As a result of this invention, papermakers are no longer bound to predetermined particle sizes of the fresh pigments and/or fresh fillers and pigment slurries obtainable from suppliers of raw materials. Papermakers are capable of preparing themselves pigment slurries in a satellite plant in situ according to the current needs. This permits a flexible and quick reaction to changing quality and production requirements, as well as lower shipping costs because no water is shipped as would be necessary in the usual slurry, and an improved stability of the self-prepared pigment slurry, as compared to the prior art.Type: GrantFiled: July 15, 2002Date of Patent: February 15, 2011Assignee: Alpha Calcit Füllstoff GmbHInventor: Dieter Münchow
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Publication number: 20100180800Abstract: The invention relates to a process for the preparation of coating dispersions for use in the paper industry by co-grinding natural calcium carbonate (GCC) and precipitated calcium carbonate (PCC), characterized in that powdery GCC is co-ground with a slurry containing from 5 to 70% by weight of PCC to obtain a particle size distribution of the calcium carbonate with at least 90% by weight of smaller than 5 ?m, at least 70% by weight of smaller than 2 ?m, and at least 20% by weight of smaller than 1 ?m, with a weight average particle size within a range of from 0.7 to 3 ?m.Type: ApplicationFiled: June 12, 2008Publication date: July 22, 2010Applicant: ALPHA CALCIT FULLSTOFF GESELLSCHAFT MBHInventor: Dieter Munchow
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Publication number: 20080319115Abstract: The invention relates to a process for the preparation of surface-modified inorganic fillers or pigments of a defined grain size, characterized in that filler or pigment slurries of inorganic fillers or pigments having a defined grain size are milled with the action of pressure and/or shear forces using polymer dispersions.Type: ApplicationFiled: October 27, 2006Publication date: December 25, 2008Applicant: ALPHA CALCIT FUELLSTOFF GESELLSCHAFT MBHInventor: Dieter Munchow
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Publication number: 20070240619Abstract: The invention relates to a method for producing surface-modified inorganic fillers or pigments of a desired particle size. Said method is characterized in that filler or pigment slurries of inorganic fillers or pigments are milled to the desired particle size under the action of compressive and shear forces using polymer dispersions, whereby the fillers and/or pigments are additionally brought into contact with conventional milling auxiliary agents and/or dispersants (active agent) in a quantity of between 0.1 and 2.0 wt. %, in relation to the fillers or pigments. The invention also relates to the fillers and pigments that are obtained by said method and to their use for producing dispersion inks, adhesives, coatings or coating compounds for the paper industry, in particular coating compounds used in various industry segments, such as sheet fed offset printing, roll offset printing, gravure printing and for the production of cardboard and special papers.Type: ApplicationFiled: May 10, 2005Publication date: October 18, 2007Applicant: Alpha Calcit Fullstoff Gesellschaft mbHInventor: Dieter Munchow
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Publication number: 20040168783Abstract: The present invention relates to a process for recycling cleaner rejects from the preparation of paper, paperboard and cardboard and to their use for the preparation of paper in the paper stock or as a coating slurry for the paper industry.Type: ApplicationFiled: March 25, 2004Publication date: September 2, 2004Inventor: Dieter Munchow
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Publication number: 20030041990Abstract: The present invention relates to a process for recycling fillers and coating pigments from the preparation of paper, paperboard and cardboard found in the residual water sludges from coating plant waste waters, deinking plants, internal water treatment plants or separators, and to the use of a thus obtained pigment slurry for the preparation of a coating compound for the paper industry or in the paper stock for papermaking.Type: ApplicationFiled: July 15, 2002Publication date: March 6, 2003Inventor: Dieter Munchow
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Patent number: 6444092Abstract: The present invention relates to a process for recycling fillers and coating pigments from the preparation of paper, paperboard and cardboard found in the residual water sludges from coating plant waste waters, deinking plants, internal water treatment plants or separators, and to the use of a thus obtained pigment slurry for the preparation of a coating compound for the paper industry or in the paper stock for papermaking. An essential element of the invention is a process for recycling fillers and coating pigments from the preparation of paper, paperboard and cardboard found in the residual water sludges from coating plant waste waters, deinking plants, internal water treatment plants or separators, characterized in that the residual water sludges containing the fillers and coating pigments are subjected to mixing and then milling together with fresh pigments or fresh fillers in the form of powders, fresh-pigment containing slurries and/or fresh-filler containing slurries to yield a pigment slurry.Type: GrantFiled: December 21, 2000Date of Patent: September 3, 2002Assignee: Alpha Calcit Füllstoff GmbHInventor: Dieter Münchow
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Publication number: 20020088587Abstract: The present invention relates to a process for recycling fillers and coating pigments from the preparation of paper, paperboard and cardboard found in the residual water sludges from coating plant waste waters, deinking plants, internal water treatment plants or separators, and to the use of a thus obtained pigment slurry for the preparation of a coating compound for the paper industry or in the paper stock for papermaking.Type: ApplicationFiled: December 21, 2000Publication date: July 11, 2002Inventor: Dieter Munchow
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Patent number: 6214166Abstract: The present invention relates to a process for recycling fillers and coating pigments from the preparation of paper, paperboard and cardboard found in the residual water sludges from coating plant waste waters, deinking plants, internal water treatment plants or separators, and to the use of a thus obtained pigment slurry for the preparation of a coating compound for the paper industry or in the paper stock for papermaking. An essential element of the invention is a process for recycling fillers and coating pigments from the preparation of paper, paperboard and cardboard found in the residual water sludges from coating plant waste waters, deinking plants, internal water treatment plants or separators, characterized in that the residual water sludges containing the fillers and coating pigments are subjected to mixing and then milling together with fresh pigments or fresh fillers in the form of powders, fresh-pigment containing slurries and/or fresh-filler containing slurries to yield a pigment slurry.Type: GrantFiled: January 8, 1999Date of Patent: April 10, 2001Assignee: Alpha Calcitt Fullstoff GmbHInventor: Dieter Münchow