Patents by Inventor Johannes Van De Braak
Johannes Van De Braak 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: 9605106Abstract: The present invention relates to a method for producing a polyester polyol having a concentration of ether groups in the range from 9.0 mol/kg of polyester polyol to 22 mol/kg polyester polyol, characterized in that (i) in a first step (A) isophthalic acid, optionally in the form of a C1-C4 alkyl ester, and/or terephthalic acid, optionally in the form of a C1-C4 alkyl ester, is reacted with (B) oligoethylene glycol of the formula H—(OCH2CH2)n—OH having a numerical average number of oxyethylene groups n in the range from 3.0 to 9.0, in the presence of at least one catalyst selected from the group made up of tin(II) salts, bismuth(II) salts, and titanium tetraalkoxylates, at a temperature in the range from 160° C. to 240° C.Type: GrantFiled: May 18, 2010Date of Patent: March 28, 2017Assignee: Covestro Deutschland AGInventors: Hartmut Nefzger, Erika Bauer, Johannes Van De Braak, Jürgen Schlossmacher, Silvia Kasperek
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Patent number: 9382371Abstract: The invention relates to a process for the production of a foam composite element, comprising the steps of providing a facing, applying adhesion promoter, and applying a foam layer comprising polyurethane and/or polyisocyanurate to the adhesion promoter, characterized in that the adhesion promoter consists of at least one compound selected from the group consisting of polyether polyol (B.1), polymer polyol (B.2), polyurea dispersion (B.3), polyester polyol (B.4) and PIPA polyol (B.5). The invention relates further to the use of at least one compound selected from the group consisting of polyether polyol, polymer polyol and polyurea dispersion as adhesion promoter in the production of foam composite elements, as well as to foam composite elements produced by the process according to the invention.Type: GrantFiled: July 23, 2010Date of Patent: July 5, 2016Assignee: Covestro Deutschland AGInventors: Johannes Van De Braak, Rolf Roers, Peter Haas
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Patent number: 8592623Abstract: Polyester polyols are produced from at least one carboxylic acid hydride and diethylene glycol by a process in which the formation of 1,4-dioxane is suppressed. These polyester polyols are useful for producing polyurethane (PUR) and polyisocyanurate (PIR) foams and metal composite elements containing these PUR or PIR foams.Type: GrantFiled: November 3, 2009Date of Patent: November 26, 2013Assignee: Bayer MaterialScience AGInventors: Rolf Roers, Hartmut Nefzger, Erika Bauer, Johannes Van De Braak, Torsten Heinemann, Jürgen Schloβmacher
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Patent number: 8481606Abstract: The invention relates to the production and use of polyester polyols, formed from at least one carboxylic acid anhydride and ethylene glycol, wherein a specialized reaction control substantially suppresses the formation of 1,4-dioxane from diethylene glycol.Type: GrantFiled: October 24, 2009Date of Patent: July 9, 2013Assignee: Bayer MaterialScience AGInventors: Hartmut Nefzger, Erika Bauer, Johannes Van de Braak, Jürgen Schloβmacher
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Publication number: 20120225278Abstract: The invention relates to a process for the production of a foam composite element, comprising the steps of providing a facing, applying adhesion promoter, and applying a foam layer comprising polyurethane and/or polyisocyanurate to the adhesion promoter, characterised in that the adhesion promoter consists of at least one compound selected from the group consisting of polyether polyol (B.1), polymer polyol (B.2), polyurea dispersion (B.3), polyester polyol (B.4) and PIPA polyol (B.5). The invention relates further to the use of at least one compound selected from the group consisting of polyether polyol, polymer polyol and polyurea dispersion as adhesion promoter in the production of foam composite elements, as well as to foam composite elements produced by the process according to the invention.Type: ApplicationFiled: July 23, 2010Publication date: September 6, 2012Applicant: Bayer MaterialSceience AGInventors: Johannes Van De Braak, Rolf Roers, Peter Haas
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Publication number: 20120129966Abstract: The present invention relates to the production and use of polyester polyols produced from at least one aromatic dicarboxylic acid or an alkyl ester of an aromatic dicarboxylic acid or the anhydride of an aromatic dicarboxylic acid and at least one ?,?-diol, wherein the formation of 1,4-dioxane from diethylene glycol is largely suppressed by means of specific reaction management.Type: ApplicationFiled: June 2, 2010Publication date: May 24, 2012Applicant: Bayer MaterialScience AGInventors: Hartmut Nefzger, Erika Bauer, Johannes Van De Braak, Silvia Kasperek
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Publication number: 20120121887Abstract: The invention relates to a method for preparing a foam composite element, including the steps of preparing a top layer, applying an adhesion promoter layer to the top layer, wherein the adhesion promoter layer includes a modified isocyanate, and applying a foam layer including polyurethane and/or polyisocyanurate to the adhesion promoter layer. On application, the modified isocyanate in the adhesion promoter layer has a content of free isocyanate groups of from ?10% to ?29%. The invention further relates to the use of a modified isocyanate having a content of free isocyanate groups of ?10% to ?29% as an adhesion promoter in the preparation of foam composite elements and foam composite elements obtained by the method according to the invention.Type: ApplicationFiled: May 14, 2010Publication date: May 17, 2012Applicant: Bayer MaterialScience AGInventors: Johannes Van De Braak, Rene Abels, Rolf Roers, Peter Haas
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Publication number: 20120123009Abstract: The present invention relates to a method for producing a polyester polyol having a concentration of ether groups in the range from 9.0 mol/kg of polyester polyol to 22 mol/kg polyester polyol, characterized in that (i) in a first step (A) isophthalic acid, optionally in the form of a C1-C4 alkyl ester, and/or terephthalic acid, optionally in the form of a C1-C4 alkyl ester, is reacted with (B) oligoethylene glycol of the formula H—(OCH2CH2)n—OH having a numerical average number of oxyethylene groups n in the range from 3.0 to 9.0, in the presence of at least one catalyst selected from the group made up of tin(II) salts, bismuth(II) salts, and titanium tetraalkoxylates, at a temperature in the range from 160° C. to 240° C.Type: ApplicationFiled: May 18, 2010Publication date: May 17, 2012Applicant: BAYER MATERIAL SCIENCE AGInventors: Hartmut Nefzger, Erika Bauer, Johannes Van De Braak, Jürgen Schlossmacher, Silvia Kasperek
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Publication number: 20110237697Abstract: The invention relates to the production and use of polyester polyols, formed from at least one carboxylic acid hydride and ethylene glycol, wherein a specialized reaction control stustantially suppresses the formation of 1,4-dioxane from diethylene glycol.Type: ApplicationFiled: October 24, 2009Publication date: September 29, 2011Applicant: Bayer MaterialScience AGInventors: Hartmut Nefzger, Erika Bauer, Johannes Van de Braak, Jürgen Schlobmacher
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Publication number: 20110236671Abstract: Polyester polyols are produced from at least one carboxylic acid hydride and diethylene glycol by a process in which the formation of 1,4-dioxane is suppressed. These polyester polyols are useful for producing polyurethane (PUR) and polyisocyanurate (PIR) foams and metal composite elements containing these PUR or PIR foams.Type: ApplicationFiled: November 3, 2009Publication date: September 29, 2011Applicant: BAYER MATERIAL SCIENCE AGInventors: Rolf Roers, Hartmut Nefzger, Erika Bauer, Johannes Van De Braak, Torsten Heinemann, Jürgen Schlossmacher
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Patent number: 7562794Abstract: Pump for applying an increased or reduced pressure to a container. The pump is provided with a plate-like part which reacts to the pressure difference between the container and the environment. This part can preferably adopt two stable positions, and a change is signalled. This change can be brought about, for example, by the sound generated as a result of the plate-like part turning over. The pitch and the like of the sound can be influenced by arranging the plate-like part in a hollow piston and providing the latter with openings leading to the environment.Type: GrantFiled: October 17, 2001Date of Patent: July 21, 2009Assignee: Vacu Vin Innovations Ltd.Inventors: Bart Lambertus Theodorus Johannes Van De Braak, Patrick Lambertus Kerkhof, Eelco Jan Gerardus Witteveen
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Patent number: 7540932Abstract: An apparatus for the production of sandwich composite elements which includes at least two feed apparatus for facings, to which an application apparatus for an adhesion promoter, an application apparatus for a core layer, a conveying apparatus and a cutting apparatus are connected one after the other. The application apparatus for the adhesion promoter includes at least one feed line for the adhesion promoter, a rotary table with at least one lateral outlet orifice and a drive for the rotary table.Type: GrantFiled: May 3, 2005Date of Patent: June 2, 2009Assignee: Bayer MaterialScience AGInventors: Thomas Rüb, Johannes Van De Braak
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Publication number: 20050257893Abstract: An apparatus for the production of sandwich composite elements which includes at least two feed apparatus for facings, to which an application apparatus for an adhesion promoter, an application apparatus for a core layer, a conveying apparatus and a cutting apparatus are connected one after the other. The application apparatus for the adhesion promoter includes at least one feed line for the adhesion promoter, a rotary table with at least one lateral outlet orifice and a drive for the rotary table.Type: ApplicationFiled: May 3, 2005Publication date: November 24, 2005Inventors: Thomas Rub, Johannes Van De Braak
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Publication number: 20040200863Abstract: Pump for applying an increased or reduced pressure to a container. The pump is provided with a plate-like part which reacts to the pressure difference between the container and the environment. This part can preferably adopt two stable positions, and a change is signalled. This change can be brought about, for example, by the sound generated as a result of the plate-like part turning over. The pitch and the like of the sound can be influenced by arranging the plate-like part in a hollow piston and providing the latter with openings leading to the environment.Type: ApplicationFiled: June 1, 2004Publication date: October 14, 2004Inventors: Bart Lambertus Theodorus Johannes Van De Braak, Patrick Lambertus Kerkhof, Eelco Jan Gerardus Witteveen