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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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