Patents by Inventor Mathieu Skrzypczak
Mathieu Skrzypczak 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).
-
Publication number: 20220106194Abstract: The present invention refers to a process for producing nano precipitated calcium carbonate (nano-PCC), as well as to the nano precipitated calcium carbonate (nano-PCC) obtained by such a process and a system for producing the nano precipitated calcium carbonate (nano-PCC) comprising at least one dry mill, preferably a dry sandmill. Furthermore, the present invention refers to the use of the nano precipitated calcium carbonate (nano-PCC) as well as to the use of the inventive system for producing nano precipitated calcium carbonate (nano-PCC).Type: ApplicationFiled: February 14, 2020Publication date: April 7, 2022Inventors: Luis PEDROSO, Holger SPIEGEL, Mathieu SKRZYPCZAK
-
Patent number: 11111388Abstract: The present invention is directed to a process for producing precipitated calcium carbonate with improved resistance to structural breakdown, wherein the milk of lime is carbonated in the presence of at least one gas other than carbon dioxide, or the carbonation is carried out in the presence of a static gas bubble comminution unit as well as to precipitated calcium carbonate obtained by such a process.Type: GrantFiled: April 30, 2020Date of Patent: September 7, 2021Assignee: OMYA INTERNATIONAL AGInventors: Holger Spiegel, Wolfgang Kreuger, Mathieu Skrzypczak, Joe Wenk, Michael Dalton, Aaro Salonen, Marc Maurer, Patrick A. C. Gane, Catherine Jean Ridgway
-
Publication number: 20200270462Abstract: The present invention is directed to a process for producing precipitated calcium carbonate with improved resistance to structural breakdown, wherein the milk of lime is carbonated in the presence of at least one gas other than carbon dioxide, or the carbonation is carried out in the presence of a static gas bubble comminution unit as well as to precipitated calcium carbonate obtained by such a process.Type: ApplicationFiled: April 30, 2020Publication date: August 27, 2020Applicant: Omya International AGInventors: Holger Spiegel, Wolfgang Kreuger, Mathieu Skrzypczak, Joe Wenk, Michael Dalton, Aaro Salonen, Marc Maurer, Patrick A.C. Gane, Catherine Jean Ridgway
-
Patent number: 10676620Abstract: The present invention is directed to a process for producing precipitated calcium carbonate with improved resistance to structural breakdown, wherein the milk of lime is carbonated in the presence of at least one gas other than carbon dioxide, or the carbonation is carried out in the presence of a static gas bubble comminution unit as well as to precipitated calcium carbonate obtained by such a process.Type: GrantFiled: July 29, 2016Date of Patent: June 9, 2020Assignee: OMYA INTERNATIONAL AGInventors: Holger Spiegel, Wolfgang Kreuger, Mathieu Skrzypczak, Joe Wenk, Michael Dalton, Aaro Salonen, Marc Maurer, Patrick A. C. Gane, Catherine Jean Ridgway
-
Patent number: 10584038Abstract: The present invention relates to a process for the preparation of precipitated calcium carbonate allowing for a more sustainable and cost-efficient use of milk of lime. The obtainable products show good optical properties as well as fine particle size distributions.Type: GrantFiled: December 8, 2015Date of Patent: March 10, 2020Assignee: OMYA INTERNATIONAL AGInventors: Marc Maurer, Mathieu Skrzypczak, Luis Pedroso, Holger Spiegel
-
Patent number: 10343929Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product comprising the steps of: (a) preparing an aqueous suspension of precipitated calcium carbonate seeds by carbonating a suspension of Ca(OH)2 in the presence of 0.005 to 0.030 moles of Sr, in the form of Sr(OH)2, per mole of Ca(OH)2, (b) dewatering and dispersing the precipitated calcium carbonate seeds prepared in step (a) to obtain an aqueous suspension of precipitated calcium carbonate seeds having a d50 of less than or equal to 0.1 to 0.3 ?m and a BET specific surface area of 10 to 30 m2/g, and (c) forming an aqueous suspension of a precipitated calcium carbonate product by carbonating a slurry of Ca(OH)2 in the presence of 0.Type: GrantFiled: January 27, 2017Date of Patent: July 9, 2019Assignee: Omya International AGInventors: Marc Maurer, Thomas Schlotterbach, Mathieu Skrzypczak, Robert Pirker
-
Publication number: 20180222765Abstract: The present invention is directed to a process for producing an aqueous suspension of precipitated calcium carbonate, wherein a milk of lime is prepared by mixing water, a calcium oxide containing material, at least one water-soluble polymer having a molecular weight Mw in the range from 200 to 6500 g/mol, and at least one slaking additive, and subsequently, the milk of lime is carbonated to form an aqueous suspension of precipitated calcium carbonate.Type: ApplicationFiled: April 3, 2018Publication date: August 9, 2018Inventors: Marc Maurer, Christian Jacquemet, Mathieu Skrzypczak
-
Publication number: 20180201789Abstract: The present invention is directed to a process for producing precipitated calcium carbonate with improved resistance to structural breakdown, wherein the milk of lime is carbonated in the presence of at least one gas other than carbon dioxide, or the carbonation is carried out in the presence of a static gas bubble comminution unit as well as to precipitated calcium carbonate obtained by such a process.Type: ApplicationFiled: July 29, 2016Publication date: July 19, 2018Inventors: Holger Spiegel, Wolfgang Kreuger, Mathieu Skrzypczak, Joe Wenk, Michael Dalton, Aaro Salonen, Marc Maurer, Patrick A.C. Gane, Catherine Jean Ridgway
-
Patent number: 10000388Abstract: The present invention is directed to a process for producing an aqueous suspension of precipitated calcium carbonate, wherein a milk of lime is prepared by mixing water, a calcium oxide containing material, at least one water-soluble polymer having a molecular weight Mw in the range from 200 to 6500 g/mol, and at least one slaking additive, and subsequently, the milk of lime is carbonated to form an aqueous suspension of precipitated calcium carbonate.Type: GrantFiled: April 30, 2015Date of Patent: June 19, 2018Assignees: Omya International AG, CoatexInventors: Marc Maurer, Christian Jacquemet, Mathieu Skrzypczak
-
Patent number: 9981855Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product. The process comprises the steps of preparing slaking quick lime to obtain slaked lime; and subjecting the slaked lime, without agitation, without prior cooling in a heat exchanger, and in the absence of any additives, to carbonation with carbon dioxide gas to produce PCC. The newly prepared product develops better performance thanks to improved resistance during processing.Type: GrantFiled: October 2, 2015Date of Patent: May 29, 2018Assignee: Omya International AGInventors: Joe Wenk, George Saunders, Marc Maurer, Mathieu Skrzypczak
-
Publication number: 20170355610Abstract: The present invention relates to a process for the preparation of precipitated calcium carbonate allowing for a more sustainable and cost-efficient use of milk of lime. The obtainable products show good optical properties as well as fine particle size distributions.Type: ApplicationFiled: December 8, 2015Publication date: December 14, 2017Inventors: Marc Maurer, Mathieu Skrzypczak, Luis Pedroso, Holger Spiegel
-
Patent number: 9776884Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product comprising the steps of: (a) preparing an aqueous suspension of precipitated calcium carbonate seeds by carbonating a suspension of Ca(OH)2 in the presence of 0.005 to 0.030 moles of Sr, in the form of Sr(OH)2, per mole of Ca(OH)2, (b) dewatering and dispersing the precipitated calcium carbonate seeds prepared in step (a) to obtain an aqueous suspension of precipitated calcium carbonate seeds having a d50 of less than or equal to 0.1 to 0.3 ?m and a BET specific surface area of 10 to 30 m2/g, and (c) forming an aqueous suspension of a precipitated calcium carbonate product by carbonating a slurry of Ca(OH)2 in the presence of 0.Type: GrantFiled: August 8, 2014Date of Patent: October 3, 2017Assignee: Omya International AGInventors: Marc Maurer, Thomas Schlotterbach, Mathieu Skrzypczak, Robert Pirker
-
Publication number: 20170137299Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product comprising the steps of: (a) preparing an aqueous suspension of precipitated calcium carbonate seeds by carbonating a suspension of Ca(OH)2 in the presence of 0.005 to 0.030 moles of Sr, in the form of Sr(OH)2, per mole of Ca(OH)2, (b) dewatering and dispersing the precipitated calcium carbonate seeds prepared in step (a) to obtain an aqueous suspension of precipitated calcium carbonate seeds having a d50 of less than or equal to 0.1 to 0.3 ?m and a BET specific surface area of 10 to 30 m2/g, and (c) forming an aqueous suspension of a precipitated calcium carbonate product by carbonating a slurry of Ca(OH)2 in the presence of 0.Type: ApplicationFiled: January 27, 2017Publication date: May 18, 2017Applicant: Omya International AGInventors: Marc Maurer, Thomas Schlotterbach, Mathieu Skrzypczak, Robert Pirker
-
Publication number: 20170050862Abstract: The present invention is directed to a process for producing an aqueous suspension of precipitated calcium carbonate, wherein a milk of lime is prepared by mixing water, a calcium oxide containing material, at least one water-soluble polymer having a molecular weight Mw in the range from 200 to 6500 g/mol, and at least one slaking additive, and subsequently, the milk of lime is carbonated to form an aqueous suspension of precipitated calcium carbonate.Type: ApplicationFiled: April 30, 2015Publication date: February 23, 2017Inventors: Marc Maurer, Christian Jacquemet, Mathieu Skrzypczak
-
Patent number: 9428398Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product. The process comprises the steps of preparing slaking quick time to obtain slaked lime; and subjecting the slaked lime, without agitation, without prior cooling in a heat exchanger, and in the absence of any additives, to carbonation with carbon dioxide as to produce PCC. The newly prepared product develops better performance thanks to improved resistance during processing.Type: GrantFiled: March 19, 2013Date of Patent: August 30, 2016Assignee: Omya International AGInventors: Joe Wenk, George Saunders, Marc Maurer, Mathieu Skrzypczak
-
Patent number: 9371241Abstract: The present invention relates to a process for the production of precipitated calcium carbonate, comprising the following steps: a) providing a reaction vessel containing an aqueous phase at an initial temperature; b) injecting a carbon dioxide generating compound into the aqueous phase until the pH of the aqueous phase is in the range of around 5 to around 7; and c) subsequently adding a calcium hydroxide slurry at an initial temperature to the reaction vessel while continuing the injection of the carbon dioxide generating compound, in order to obtain an aqueous slurry of the precipitated calcium carbonate. The addition rate of the calcium hydroxide slurry to the reaction vessel in step c) is such that an average electrical conductivity of the reaction contents in the reaction vessel during the reaction is in a range of 100 to 6,000 ?S/cm.Type: GrantFiled: February 25, 2015Date of Patent: June 21, 2016Assignee: Omya International AGInventors: Mathieu Skrzypczak, Marc Maurer, Thomas Schmölzer
-
Publication number: 20160167977Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product comprising the steps of: (a) preparing an aqueous suspension of precipitated calcium carbonate seeds by carbonating a suspension of Ca(OH)2 in the presence of 0.005 to 0.030 moles of Sr, in the form of Sr(OH)2, per mole of Ca(OH)2, (b) dewatering and dispersing the precipitated calcium carbonate seeds prepared in step (a) to obtain an aqueous suspension of precipitated calcium carbonate seeds having a d50 of less than or equal to 0.1 to 0.3 um and a BET specific surface area of 10 to 30 m2/g, and (c) forming an aqueous suspension of a precipitated calcium carbonate product by carbonating a slurry of Ca(OH)2 in the presence of 0.Type: ApplicationFiled: August 8, 2014Publication date: June 16, 2016Inventors: Marc Maurer, Thomas Schlotterbach, Mathieu Skrzypczak, Robert Pirker
-
Publication number: 20160023915Abstract: The present invention provides a process for preparing a precipitated calcium carbonate product. The process comprises the steps of preparing slaking quick lime to obtain slaked lime; and subjecting the slaked lime, without agitation, without prior cooling in a heat exchanger, and in the absence of any additives, to carbonation with carbon dioxide gas to produce PCC. The newly prepared product develops better performance thanks to improved resistance during processing.Type: ApplicationFiled: October 2, 2015Publication date: January 28, 2016Applicant: Omya International AGInventors: Joe Wenk, George Saunders, Marc Maurer, Mathieu Skrzypczak
-
Patent number: 9150738Abstract: The present invention relates to a process for the production of precipitated calcium carbonate, comprising the following steps: a) providing a reaction vessel containing an aqueous phase at an initial temperature; b) injecting a carbon dioxide generating compound into the aqueous phase until the pH of the aqueous phase is in the range of around 5 to around 7; and c) subsequently adding a calcium hydroxide slurry at an initial temperature to the reaction vessel while continuing the injection of the carbon dioxide generating compound, in order to obtain an aqueous slurry of the precipitated calcium carbonate. The addition rate of the calcium hydroxide slurry to the reaction vessel in step c) is such that an average electrical conductivity of the reaction contents in the reaction vessel during the reaction is in a range of 100 to 6 000 ?S/cm.Type: GrantFiled: June 19, 2012Date of Patent: October 6, 2015Assignee: Omya International AGInventors: Mathieu Skrzypczak, Marc Maurer, Thomas Schmölzer
-
Publication number: 20150210559Abstract: The present invention relates to a process for the production of precipitated calcium carbonate, comprising the following steps: a) providing a reaction vessel containing an aqueous phase at an initial temperature; b) injecting a carbon dioxide generating compound into the aqueous phase until the pH of the aqueous phase is in the range of around 5 to around 7; and c) subsequently adding a calcium hydroxide slurry at an initial temperature to the reaction vessel while continuing the injection of the carbon dioxide generating compound, in order to obtain an aqueous slurry of the precipitated calcium carbonate. The addition rate of the calcium hydroxide slurry to the reaction vessel in step c) is such that an average electrical conductivity of the reaction contents in the reaction vessel during the reaction is in a range of 100 to 6,000 ?S/cm.Type: ApplicationFiled: February 25, 2015Publication date: July 30, 2015Inventors: Mathieu Skrzypczak, Marc Maurer, Thomas Schmölzer