Patents by Inventor Helmut Loeffler
Helmut Loeffler 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: 10407573Abstract: This invention relates to coating compositions curable by radical polymerization by means of high energy radiation and by at least one additional chemical curing reaction, comprising: A) at least one compound capable of free-radical polymerization having at least one olefinically unsaturated group, B) at least one photoinitiator and C) at least one organic phosphine derivative, preferably at least one triaryl phosphine, most preferred triphenyl phosphine.Type: GrantFiled: June 14, 2010Date of Patent: September 10, 2019Assignee: Axalta Coating Systems IP Co., LLCInventor: Helmut Loeffler
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Patent number: 9186701Abstract: This invention relates to a process for multilayer coating of substrates, comprising the steps: I) applying a layer of a water-based color-imparting and/or special effect-imparting base coat coating composition to a substrate, II) applying a layer of a clear coat coating composition curable by means of high energy radiation and optionally curable by at least one additional chemical curing reaction, and III) curing said clear coat layer by exposing it to high energy radiation, wherein the clear coat coating composition comprises: A) at least one compound capable of free-radical polymerization having at least one olefinically unsaturated group, B) at least one photoinitiator and C) at least one organic phosphine derivative.Type: GrantFiled: June 14, 2010Date of Patent: November 17, 2015Assignee: AXALTA COATING SYSTEMS IP CO., LLCInventor: Helmut Loeffler
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Publication number: 20120083548Abstract: This invention relates to coating compositions curable by radical polymerization by means of high energy radiation and by at least one additional chemical curing reaction, comprising: A) at least one compound capable of free-radical polymerization having at least one olefinically unsaturated group, B) at least one photoinitiator and C) at least one organic phosphine derivative, preferably at least one triaryl phosphine, most preferred triphenyl phosphine.Type: ApplicationFiled: June 14, 2010Publication date: April 5, 2012Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventor: Helmut Loeffler
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Publication number: 20120082799Abstract: This invention relates to Process for multilayer coating of substrates, comprising the steps: I) applying a layer of a water-based color-imparting and/or special effect-imparting base coat coating composition to a substrate, II) applying a layer of a clear coat coating composition curable by means of high energy radiation and optionally curable by at least one additional chemical curing reaction, and III) curing said clear coat layer by exposing it to high energy radiation, wherein the clear coat coating composition comprises: A) at least one compound capable of free-radical polymerization having at least one olefinically unsaturated group, B) at least one photoinitiator and C) at least one organic phosphine derivative.Type: ApplicationFiled: June 14, 2010Publication date: April 5, 2012Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventor: Helmut Loeffler
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Publication number: 20110206858Abstract: The invention is directed to putty compositions curable by means of high energy radiation, comprising A) at least one compound capable of free-radical polymerization having at least one olefinic unsaturated group and B) at least one filler, the at least one filler or a mixture of fillers having a particle size distribution such that at most 8% by volume of the filler particles in relation to the total volume of fillers have a particle size of less than or equal to 1.9 ?m and can be used particularly in repair coating vehicle bodies and parts thereof.Type: ApplicationFiled: August 8, 2007Publication date: August 25, 2011Inventors: Helmut Loeffler, Carmen Flosbach
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Patent number: 7510746Abstract: The invention is directed to a process for the production of a multi-layer coating comprising the following steps: A) applying a base coat layer of a pigmented color-imparting and/or special effect-imparting base coat composition onto a substrate precoated with at least one coating layer, B) applying a coating layer of a coating composition curable by means of high-energy radiation, wherein the coating composition comprises at least one oligomeric and/or polymeric binder curable by means of high-energy radiation and does contain low molecular weight reactive diluents curable by means of high-energy radiation, C) curing the coating layer applied in step B) by irradiation with high-energy radiation, D) applying a clear coat layer of a transparent clear coat composition curable by means of high-energy radiation which comprises low molecular weight reactive diluents curable by means of high-energy radiation and E) curing the clear coat layer applied in step D) by irradiation with high-energy radiation.Type: GrantFiled: June 4, 2004Date of Patent: March 31, 2009Assignee: E.I. du Pont de Nemours and CompanyInventors: Helmut Loeffler, Nadja Doerigmann, Juergen Peter Stropp
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Patent number: 7491419Abstract: A process for repairing a vehicle coating, comprising the following steps: I) applying a UV radiation coating composition onto a coated vehicle or vehicle part, having a blemished area on the coated surface to be repaired, wherein the coating composition comprises A) at least one free-radically polymerizable oligomeric and/or polymeric binder containing olefinically unsaturated groups, B) optionally, at least one free-radically polymerizable monomeric reactive diluent containing one or more olefinically unsaturated groups, C) at least one photoinitiator, D) at least one metal compound of a metal salt containing the metal in the cation and/or anion of the compound, organometallic compounds, metal coordination compounds and mixtures thereof, wherein the metal is from groups 13-14 of the periodic system of elements and a transition metal, and is able to occur in at least 2 oxidation states other than zero and E) optionally, water, organic solvents, pigments, fillers and/or conventional coating additives, andType: GrantFiled: January 11, 2006Date of Patent: February 17, 2009Assignee: EI du Pont de Nemours & CompanyInventors: Juergen Peter Stropp, Martin Wulf, Helmut Loeffler, Dmitry Chernyshov
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Publication number: 20060165882Abstract: Process for Vehicle Repair Coating A process for repairing a vehicle coating, comprising the following steps: I) applying a UV radiation coating composition onto a coated vehicle or vehicle part, having a blemished area on the coated surface to be repaired, wherein the coating composition comprises A) at least one free-radically polymerizable oligomeric and/or polymeric binder containing olefinically unsaturated groups, B) optionally, at least one free-radically polymerizable monomeric reactive diluent containing one or more olefinically unsaturated groups, C) at least one photoinitiator, D) at least one metal compound of a metal salt containing the metal in the cation and/or anion of the compound, organometallic compounds, metal coordination compounds and mixtures thereof, wherein the metal is from groups 13-14 of the periodic system of elements and a transition metal, and is able to occur in at least 2 oxidation states other than zero and E) optionally, water, organic solvents, pigments, fillers and/or convType: ApplicationFiled: January 11, 2006Publication date: July 27, 2006Inventors: Juergen Stropp, Martin Wulf, Helmut Loeffler, Dmitry Chernyshov
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Publication number: 20050271824Abstract: The invention is directed to a process for the production of a multi-layer coating comprising the following steps: A) applying a base coat layer of a pigmented colour-imparting and/or special effect-imparting base coat composition onto a substrate precoated with at least one coating layer, B) applying a coating layer of a coating composition curable by means of high-energy radiation, wherein the coating composition comprises at least one oligomeric and/or polymeric binder curable by means of high-energy radiation and does contain low molecular weight reactive diluents curable by means of high-energy radiation, C) curing the coating layer applied in step B) by irradiation with high- energy radiation, D) applying a clear coat layer of a transparent clear coat composition curable by means of high-energy radiation which comprises low molecular weight reactive diluents curable by means of high-energy radiation and E) curing the clear coat layer applied in step D) by irradiation with high- energy radiation.Type: ApplicationFiled: June 4, 2004Publication date: December 8, 2005Inventors: Helmut Loeffler, Nadja Doerigmann, Juergen Stropp
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Patent number: 6740365Abstract: Coating compounds curable by means of high-energy radiation, comprising as binder A) at least one (meth)acrylic copolymer containing olefinic double bonds capable of free-radical polymerization and hydroxyl groups with a C═C equivalent weight from 100 to 10,000 and an OH-value from 20 to 250 mg KOH/g, which is prepared from monomers comprising: A1) at least one olefinically unsaturated, epoxy-functional monomer capable of free-radical polymerization, A2) at least one olefinically unsaturated, carboxy-functional monomer capable of free-radical polymerization and A3) at least one further olefinically unsaturated monomer capable of free-radical polymerization which is different from A1) and A2), and B) at least one component with free isocyanate groups and process for multilayer coating using the coating compounds.Type: GrantFiled: April 15, 2003Date of Patent: May 25, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Morenike Awokola, Carmen Flosbach, Helmut Loeffler, Volker Paschmann
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Publication number: 20030212163Abstract: Coating compounds curable by means of high-energy radiation, comprising as binderType: ApplicationFiled: April 15, 2003Publication date: November 13, 2003Applicant: E.I. du Pont de Nemours & CompanyInventors: Morenike Awokola, Carmen Flosbach, Helmut Loeffler, Volker Paschmann
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Patent number: 6605669Abstract: Coating compounds curable by means of high-energy radiation, comprising as binder A) at least one (meth)acrylic copolymer containing olefinic double bonds capable of free-radical polymerization and hydroxyl groups with a C═C equivalent weight from 100 to 10,000 and an OH-value from 20 to 250 mg KOH/g, which is prepared from monomers comprising: A1) at least one olefinically unsaturated, epoxy-functional monomer capable of free-radical polymerization, A2) at least one olefinically unsaturated, carboxy-functional monomer capable of free-radical polymerization and A3) at least one further olefinically unsaturated monomer capable of free-radical polymerization which is different from A1) and A2), and B) at least one component with free isocyanate groups and process for multilayer coating using the coating compounds.Type: GrantFiled: April 3, 2001Date of Patent: August 12, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Morenike Awokola, Carmen Flosbach, Helmut Loeffler, Volker Paschmann
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Patent number: 6534130Abstract: A process for the preparation of a multi-layer coating wherein a colour- and/or special effect-imparting base lacquer coating compound is applied to a substrate optionally precoated with a primer and/or primer surfacer coating compound and/or further coating compounds and a clear lacquer layer is then applied to the colour- and/or special effect-imparting base lacquer layer, wherein the colour- and/or special effect-imparting base lacquer coating compound used is one which contains binders which can be cured by free-radical and/or cationic polymerisation under the action of high-energy radiation.Type: GrantFiled: August 21, 2000Date of Patent: March 18, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Karin Maag, Helmut Löffler, Werner Lenhard, Christine Kurz, Frank-Jürgen Krumpolt, Volker Rekowski
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Patent number: 6531188Abstract: Process for producing a multi-layer lacquer finish, in which a surfacer coating compound is applied to a substrate optionally pre-coated with a priming layer and/or further coating layers, and a top coating comprising a color-imparting and/or special-effect-imparting base lacquer layer and a transparent clear lacquer layer, or a top coating comprising a pigmented one-layer top lacquer, is then applied, in which the surfacer coating compound which is used is one which either contains binders which are curable exclusively by free radical and/or cationic polymerization, wherein the said binders are cured by means of high-energy radiation, or is one which contains binders which are curable by free radical and/or cationic polymerization, wherein the said binders are cured by means of high-energy radiation, and additionally contains chemically cross-linking binders.Type: GrantFiled: August 3, 2000Date of Patent: March 11, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Karin Maag, Helmut Löffler, Werner Lenhard
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Patent number: 6528126Abstract: A process for multi-coat lacquering by applying a coat of filler and/or other coating compounds on to a substrate and then a top coat consisting of a base coat/clear lacquer construction or of a pigmented one-coat finish, at least one of the coats in the multi-coat construction being prepared from a coating compound which is at least partially curable by high-energy radiation, and irradiating this (these) coat(s) with UV radiation and IR radiation, a UV source having a proportion of IR radiation in its emission spectrum being, used for the irradiation with UV and IR radiation and, by alternately adding a UV filter and an IR filter and/or alternately adding and removing a UV filter or an IR filter in front of the radiation source, at least two irradiation intervals being formed, during which irradiation is variously carried out with UV radiation, IR radiation or UV radiation and IR radiation simultaneously.Type: GrantFiled: October 2, 2000Date of Patent: March 4, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Wolfgang Feyrer, Christine Kimpel, Helmut Löffler, Karin Maag, Jens Zeyen
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Publication number: 20020143078Abstract: Coating compounds curable by means of high-energy radiation, comprising as binderType: ApplicationFiled: April 3, 2001Publication date: October 3, 2002Inventors: Morenike Awokola, Carmen Flosbach, Helmut Loeffler, Volker Paschmann
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Patent number: 6332291Abstract: This invention relates to radiation-curable coating compositions which contain A) compounds having one or more free-radically polymerisable double bonds which additionally contain at least one further functional group reactive for the purposes of an addition and/or condensation reaction, B) compounds having one or more free-radically polymerisable double bonds, which additionally contain at least one further functional group reactive for the purposes of an addition and/or condensation reaction, wherein the additional reactive functional group is complementary to or reactive towards the additional reactive functional groups of component A), C) optionally at least one monomeric, oligomeric and/or polymeric compound having at least one functional group reactive towards the functional groups from component A) or component B) D) one or more photoinitiators as well as E) optionally solvents, water, pigments and/or extenders as well as conventional lacquer additives, wherein component A) and component B) diffeType: GrantFiled: December 17, 1999Date of Patent: December 25, 2001Assignee: Herberts GmbH & Co. KGInventors: Carmen Flosbach, Helmut Löffler, Karin Maag