Patents by Inventor Christoph Eggert
Christoph Eggert 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: 20180155574Abstract: The invention relates to a polyisocyanate composition based on 1,5-diisocyanatopentane, to a method for the production thereof and to the use thereof for producing polyurethane plastics. The invention also relates to a coating agent containing the polyisocyanate composition and to the coating obtained from the coating agent.Type: ApplicationFiled: March 14, 2016Publication date: June 7, 2018Inventors: Hans-Josef Laas, Christoph Eggert, Nusret Yuva, Achim Meyer, Gesa Behnken, Andreas Hecking
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Publication number: 20180112026Abstract: The invention relates to modified polyisocyanates, obtained by reacting at least one polyisocyanate (A) based on 1,5-diisocyanatopentane with at least one silane compound (B) which is reactive with respect to isocyanate groups. The invention also relates to a method for producing the modified polyisocyanates and to the use thereof as starting components in the production of polyurethane plastics, in particular as crosslinker components in polyurethane paints and coatings.Type: ApplicationFiled: March 10, 2016Publication date: April 26, 2018Inventors: Hans-Josef LAAS, Christoph EGGERT, Andreas HECKING, Nusret YUVA, Gesa BEHNKEN
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Publication number: 20180079852Abstract: The invention relates to a polyisocyanate composition, containing compounds having isocyanate groups with at least one 1,5-bridging pentamethylene unit and an isocyanate group, wherein a portion of the compounds additionally has at least one allophanate group, characterized in that the polyisocyanate composition has an isocyanurate trimer content of ?59 wt. % in relation to the total weight of the polyisocyanate composition, the allophanate groups carry a group that is organic and inert relative to isocyanate groups, and the allophanate groups are present in an equivalent ratio of >0 and ?0.19 in relation to the isocyanurate groups. The invention also relates to a method for producing the polyisocyanate, a two-component system, the use thereof for the production of a coating on a substrate, the coating and the composite formed by the coating and the substrate.Type: ApplicationFiled: March 14, 2016Publication date: March 22, 2018Inventors: Andreas Hecking, Christoph Eggert, Uwe Werner, Nusret Yuva, Gesa Behnken, Robert Reyer
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Patent number: 9757492Abstract: The present invention relates to a process for producing a hydroxy amino polymer comprising the steps: a) Reaction of an H functional starter compound bearing at least one Zerewitinoff active H atom with an unsaturated, cyclical carboxylic acid anhydride and at least one alkylene oxide compound for obtaining a prepolymer bearing hydroxyl groups, b) Addition of a primary amine and/or of ammonia to the double bond(s) of the prepolymer bearing hydroxyl groups obtained according to step a) for obtaining the hydroxy amino polymer, wherein the ratio of added amino groups to hydroxyl groups in a hydroxy amino polymer is at least 0.6. Furthermore, the invention relates to a hydroxy amino polymer, which can be achieved according to this process as well as a polyurea/polyurethane system, which contains such a hydroxy amino polymer.Type: GrantFiled: January 10, 2017Date of Patent: September 12, 2017Assignee: Adhesys Medical GmbHInventors: Heike Heckroth, Christoph Eggert, Jörg Hofmann, Klaus Lorenz, Edward Browne, Hartmut Nefzger
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Patent number: 9717819Abstract: The present invention relates to a polyurea system, the use of such a polyurea system for sealing, linking, gluing, or covering of cellular tissue, and a dosing system having two chambers for a polyurea system such as this. The polyurea system comprises as components: A) an isocyanate-functioning prepolymer, which can be derived by reacting aliphatic isocyanates with polyoles, and B) an amino-functioning ester of aspartic acid. According to the invention, water and/or tertiary amine is added to the system, in order to increase the reacting speed of the prepolymer with the amino-functioning ester of aspartic acid while decreasing the setting time at the same time.Type: GrantFiled: June 24, 2016Date of Patent: August 1, 2017Assignee: Adhesys Medical GmbHInventors: Heike Heckroth, Hartmut Nefzger, Christoph Eggert
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Publication number: 20170119921Abstract: The present invention relates to a process for producing a hydroxy amino polymer comprising the steps: a) Reaction of an H functional starter compound bearing at least one Zerewitinoff active H atom with an unsaturated, cyclical carboxylic acid anhydride and at least one alkylene oxide compound for obtaining a prepolymer bearing hydroxyl groups, b) Addition of a primary amine and/or of ammonia to the double bond(s) of the prepolymer bearing hydroxyl groups obtained according to step a) for obtaining the hydroxy amino polymer, wherein the ratio of added amino groups to hydroxyl groups in a hydroxy amino polymer is at least 0.6. Furthermore, the invention relates to a hydroxy amino polymer, which can be achieved according to this process as well as a polyurea/polyurethane system, which contains such a hydroxy amino polymer.Type: ApplicationFiled: January 10, 2017Publication date: May 4, 2017Inventors: Heike HECKROTH, Christoph EGGERT, Jörg HOFMANN, Klaus LORENZ, Edward BROWNE, Hartmut NEFZGER
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Publication number: 20170121450Abstract: The invention relates to thioallophanates which contain silane groups and are of the general formula (I) in which R1, R2 and R3 are identical or different radicals and are each a saturated or unsaturated, linear or branched, aliphatic or cycloaliphatic radical or an optionally substituted aromatic or araliphatic radical having up to 18 carbon atoms, where said radical may optionally contain up to 3 heteroatoms from the group of oxygen, sulphur and nitrogen, X is a linear or branched organic radical having at least 2 carbon atoms, Y is a linear or branched, aliphatic or cycloaliphatic radical or an araliphatic or aromatic radical having up to 18 carbon atoms, and n is an integer from 1 to 20, to a process for preparation thereof, and to the use thereof as starting components in the production of polyurethane plastics.Type: ApplicationFiled: June 9, 2015Publication date: May 4, 2017Inventors: Hans-Josef Laas, Christoph Eggert, Dieter Mager
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Publication number: 20170121449Abstract: The invention relates to a composition for producing transparent polythiourethane bodies containing or consisting of A) a polyisocyanate component containing at least one polyisocyanate with a functionality of isocyanate groups of at least 2 per molecule, B) a thiol component containing at least one polythiol with a functionality of thiol groups of at least two per molecule, in addition to optionally C) auxiliary agents and additives, the ratio of isocyanate groups to groups reactive in relation to isocyanates being 0.5:1 to 2.0:1. The composition is characterised in that the polyisocyanate of the polyisocyanate component A) is produced by a gas-phase phosgenation of aliphatic, cycloaliphatic, aromatic or araliphatic polyamines.Type: ApplicationFiled: April 13, 2015Publication date: May 4, 2017Inventors: Robert MALEIKA, Fredie LANGENSTUECK, Christoph EGGERT, Irene C. LATORRE MARTINEZ, Josef SANDERS
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Patent number: 9580540Abstract: The present invention relates to a process for producing a hydroxy amino polymer comprising the steps: a) Reaction of an H functional starter compound bearing at least one Zerewitinoff active H atom with an unsaturated, cyclical carboxylic acid anhydride and at least one alkylene oxide compound for obtaining a prepolymer bearing hydroxyl groups, b) Addition of a primary amine and/or of ammonia to the double bond(s) of the prepolymer bearing hydroxyl groups obtained according to step a) for obtaining the hydroxy amino polymer, wherein the ratio of added amino groups to hydroxyl groups in a hydroxy amino polymer is at least 0.6. Furthermore, the invention relates to a hydroxy amino polymer, which can be achieved according to this process as well as a polyurea/polyurethane system, which contains such a hydroxy amino polymer.Type: GrantFiled: December 17, 2012Date of Patent: February 28, 2017Assignee: Adhesys Medical GmbHInventors: Heike Heckroth, Christoph Eggert, Jörg Hofmann, Klaus Lorenz, Edward Browne, Hartmut Nefzger
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Publication number: 20170029552Abstract: The invention relates to a composition for producing transparent polythiourethane bodies, containing or consisting of A) a polyisocyanate component that contains at least one polyisocyanate having an isocyanate group functionality of at least 2 per molecule, B) a thiol component that contains at least one polythiol having a thiol group functionality of at least 2 per molecule, and if appropriate, C) auxiliary and additional agents, the ratio of isocyanate groups to groups that are reactive to isocyanates being between 0.5:1 to 2.0:1, and said composition being characterised in that it also contains D) at least one aromatic nitrile. The invention also relates to a method for producing transparent polythiourethane bodies by reacting such a composition, to the polythiourethane bodies produced in this manner, to the use of aromatic nitriles for producing transparent polythiourethane bodies, and to a mixture of a polyisocyanate and an aromatic nitrile.Type: ApplicationFiled: April 13, 2015Publication date: February 2, 2017Inventors: Robert MALEIKA, Fredie LANGENSTUECK, Christoph EGGERT, Irene C. LATORRE MARTINEZ, Frank-Stefan STERN, Josef SANDERS
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Publication number: 20160340372Abstract: The invention relates to novel silane-modified formamide-polymers and/or pre-polymers for bonding and/or sealing diverse substrate materials, such as, for example metal, wood, glass and/or plastic. The invention also relates to a reactive single-component adhesive system comprising the claimed silane-modified formamide polymers.Type: ApplicationFiled: January 26, 2015Publication date: November 24, 2016Inventor: Christoph Eggert
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Publication number: 20160340371Abstract: The invention relates to novel silane-modified formamides and/or pre-polymers for bonding and/or sealing diverse substrate materials, such as, for example metal, wood, glass and/or plastic, The invention also relates to a reactive single-component adhesive system comprising the claimed silane-modified formamide and/or pre-polymers.Type: ApplicationFiled: January 26, 2015Publication date: November 24, 2016Inventor: Christoph EGGERT
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Publication number: 20160303277Abstract: The present invention relates to a polyurea system, the use of such a polyurea system for sealing, linking, gluing, or covering of cellular tissue, and a dosing system having two chambers for a polyurea system such as this. The polyurea system comprises as components: A) an isocyanate-functioning prepolymer, which can be derived by reacting aliphatic isocyanates with polyoles, and B) an amino-functioning ester of aspartic acid. According to the invention, water and/or tertiary amine is added to the system, in order to increase the reacting speed of the prepolymer with the amino-functioning ester of aspartic acid while decreasing the setting time at the same time.Type: ApplicationFiled: June 24, 2016Publication date: October 20, 2016Inventors: Heike Heckroth, Hartmut NEFZGER, Christoph EGGERT
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Patent number: 9468701Abstract: The present invention relates to an isocyanate functional prepolymer that can be achieved through a) a reaction of an H functional starter compound having at least one Zerewitinoff active H atom with an alkylene oxide and a comonomer to a preliminary stage bearing hydroxyl groups, wherein said comonomer is selected from the group comprising lactides, glycolides, cyclical dicarboxylic acid anhydrides as well as combinations thereof and wherein said comonomer is integrated through statistical copolymerization into the polymer chain(s) of the preliminary stage bearing hydroxyl groups, and b) a reaction of the preliminary stage bearing hydroxyl groups from step a) with a polyfunctional isocyanate to an isocyanate functional prepolymer. The invention additionally relates to a process for producing this isocyanate functional prepolymer, a tissue adhesive system containing such an isocyanate functional prepolymer and a dispensing system having at least two chambers and this type of tissue adhesive system.Type: GrantFiled: May 16, 2016Date of Patent: October 18, 2016Assignee: Adhesys Medical GmbHInventors: Heike Heckroth, Christoph Eggert, Jörg Hofmann, Klaus Lorenz
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Publication number: 20160256595Abstract: The present invention relates to an isocyanate functional prepolymer that can be achieved through a) a reaction of an H functional starter compound having at least one Zerewitinoff active H atom with an alkylene oxide and a comonomer to a preliminary stage bearing hydroxyl groups, wherein said comonomer is selected from the group comprising lactides, glycolides, cyclical dicarboxylic acid anhydrides as well as combinations thereof and wherein said comonomer is integrated through statistical copolymerization into the polymer chain(s) of the preliminary stage bearing hydroxyl groups, and b) a reaction of the preliminary stage bearing hydroxyl groups from step a) with a polyfunctional isocyanate to an isocyanate functional prepolymer. The invention additionally relates to a process for producing this isocyanate functional prepolymer, a tissue adhesive system containing such an isocyanate functional prepolymer and a dispensing system having at least two chambers and this type of tissue adhesive system.Type: ApplicationFiled: May 16, 2016Publication date: September 8, 2016Inventors: Heike Heckroth, Christoph Eggert, Jõrg Hofmann, Klaus Lorenz
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Patent number: 9421298Abstract: The invention relates to a polyurea system comprising as component A) isocyanate-functional prepolymers which can be obtained by reacting aliphatic isocyanates A1) with polyols A2) that can have a number-average molecular weight of =400 g/mol and an average OH functionality of 2 to 6 in particular; and as component B) amino-functional aspartic acid esters of the general formula (I) in which X is an organic group containing a secondary amino function, R1, R2 are the same or different organic groups that do not have Zerewitinoff-active hydrogen, and n is a whole number of at least 2, in particular for sealing, bonding, gluing, or covering cell tissue. The invention also relates to a metering system for the polyurea system according to the invention.Type: GrantFiled: February 6, 2012Date of Patent: August 23, 2016Assignee: Adhesys Medical GmbHInventors: Heike Heckroth, Christoph Eggert
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Patent number: 9404026Abstract: The present invention relates to a polyurea system, the use of such a polyurea system for sealing, linking, gluing, or covering of cellular tissue, and a dosing system having two chambers for a polyurea system such as this. The polyurea system comprises as components: A) an isocyanate-functioning prepolymer, which can be derived by reacting aliphatic isocyanates with polyoles, and B) an amino-functioning ester of aspartic acid. According to the invention, water and/or tertiary amine is added to the system, in order to increase the reacting speed of the prepolymer with the amino-functioning ester of aspartic acid while decreasing the setting time at the same time.Type: GrantFiled: May 4, 2015Date of Patent: August 2, 2016Assignee: Adhesys Medical GmbHInventors: Heike Heckroth, Hartmut Nefzger, Christoph Eggert
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Patent number: 9393345Abstract: The present invention relates to a polyurea system comprising as component A) isocyanate-functional prepolymers obtainable by reaction of aliphatic isocyanates A1) with polyols A2), which in particular can have a number-average molecular weight of ?400 g/mol and a mean OH functionality of from 2 to 6, as component B) an amino-functional compound of the general formula (I) in which X is an organic radical containing a secondary amino function, Y is an organic radical that contains a tertiary amino group and does not contain Zerewitinoff-active hydrogen, R1 is a CH2—COOR3 radical in which R3 is an organic radical that does not contain Zerewitinoff-active hydrogen, a linear or branched C1- to C4-alkyl radical, a cyclopentyl radical, a cyclohexyl radical or H, R2 is an organic radical that does not contain Zerewitinoff-active hydrogen, a is 1 or 2, b is 1 or 2, and a+b=2 or 3, for stemming the escape of blood, and to a metering system for the polyurea system according to the invention.Type: GrantFiled: April 17, 2012Date of Patent: July 19, 2016Assignee: Adhesys Medical GmbHInventors: Heike Heckroth, Christoph Eggert
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Patent number: 9375509Abstract: The present invention relates to an isocyanate functional prepolymer that can be achieved through a) a reaction of an H functional starter compound having at least one Zerewitinoff active H atom with an alkylene oxide and a comonomer to a preliminary stage bearing hydroxyl groups, wherein said comonomer is selected from the group comprising lactides, glycolides, cyclical dicarboxylic acid anhydrides as well as combinations thereof and wherein said comonomer is integrated through statistical copolymerization into the polymer chain(s) of the preliminary stage bearing hydroxyl groups, and b) a reaction of the preliminary stage bearing hydroxyl groups from step a) with a polyfunctional isocyanate to an isocyanate functional prepolymer. The invention additionally relates to a process for producing this isocyanate functional prepolymer, a tissue adhesive system containing such an isocyanate functional prepolymer and a dispensing system having at least two chambers and this type of tissue adhesive system.Type: GrantFiled: December 17, 2012Date of Patent: June 28, 2016Assignee: Medical Adhesive Revolution GmbHInventors: Heike Heckroth, Christoph Eggert, Jörg Hofmann, Klaus Lorenz
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Patent number: 9254347Abstract: The present invention relates to a polyurea system encompassing as component A) isocyanate-functional prepolymers obtainable by reaction of aliphatic isocyanates A1) with polyols A2), which can in particular have a number average molecular weight of ?400 g/mol and an average OH functionality of 2 to 6, as component B) amino-functional compounds of general formula (I) in which X is an organic residue comprising a tertiary amino function, having no Zerewitinoff active hydrogen, R1 is a CH2—COOR3 residue, in which R3 is an organic residue having no Zerewitinoff active hydrogen, a linear or branched C1 to C4 alkyl residue, a cyclopentyl or cyclohexyl residue or H, R2 is an organic residue having no Zerewitinoff active hydrogen, n is an integer ?2 or ?3, in particular for closing, binding, bonding or covering cell tissue, and to a metering system for the polyurea system according to the invention.Type: GrantFiled: April 17, 2012Date of Patent: February 9, 2016Assignee: Medical Adhesive Revolution GmbHInventors: Heike Heckroth, Christoph Eggert