Patents by Inventor David George Anderson
David George Anderson 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: 10040893Abstract: The present invention provides polymeric quaternary ammonium photoinitiators being co-polymers of photoinitiator monomers, as well as quaternary ammonium photoinitiator monomer being valuable intermediates in the preparation of such polymeric photoinitiators. Additionally, there is provided a polyacrylate obtained by radical polymerization of at least one acrylate monomer (Ac) in the presence of such polymeric photoinitiators. In the photoinitiator monomers and polymeric photoinitiators, a photoinitiator moiety and a quaternary ammonium are incorporated into the photoinitiator structure.Type: GrantFiled: May 14, 2013Date of Patent: August 7, 2018Assignee: Coloplast A/SInventors: Niels Joergen Madsen, Petr Sehnal, David George Anderson, Bo Rud Nielsen
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Patent number: 9708425Abstract: A polyacrylate is obtained by radical polymerization of at least one acrylate monomer (Ac) in the presence of a polymeric photoinitiator. The polymeric photoinitiator is a co-polymer of at least one photoinitiator monomer (A) with at least one monomer (B), and optional additional monomers (C). Rapid polymerization of the acrylate monomer is provided. A method produces a polyacrylate using the polymeric photoinitiator as described, and a polymeric photoinitiator is used as the photoinitiator of radical polymerization of acrylate monomers.Type: GrantFiled: November 11, 2011Date of Patent: July 18, 2017Assignee: Coloplast A/SInventors: Niels Joergen Madsen, Christian B. Nielsen, Petr Sehnel, David George Anderson
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Patent number: 9670373Abstract: The invention relates to a polymer (P) comprising at least one photoinitiator moiety (PI) and at least one dye moiety (DYE), wherein said at least one photoinitiator moiety (PI) and at least one dye moiety (DYE) are covalently linked to said polymer (P). Additionally, the invention relates to said polymer (P) being end-functionalized with optionally substituted acryloyi groups. The fact that both of these moieties are tightly bonded within the polymer, and the cross-linked polymer, means that the opportunities for leaching/migration of these components is reduced or even eliminated. Inks comprising at least one of said polymers are also provided. Methods for the manufacture of the polymers, and for printing are provided.Type: GrantFiled: August 24, 2012Date of Patent: June 6, 2017Assignee: Lambson LimitedInventors: Niels Joergen Madsen, Christian B. Nielsen, Petr Sehnal, David George Anderson
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Patent number: 9399633Abstract: The present invention provides novel photoinitiators for polyurethane formation, in which a photoinitiator moiety and a tertiary amine are incorporated into the photoinitiator structure, and thus the polyurethane polymer.Type: GrantFiled: November 12, 2015Date of Patent: July 26, 2016Assignee: Coloplast A/SInventors: Niels Joergen Madsen, Petr Sehnal, Christian B. Nielsen, David George Anderson
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Patent number: 9371308Abstract: A polymeric photoinitiator, most suitably a polyurethane photoinitiator, is obtained by step-growth co-polymerization of at least one monomer (A) with at least one monomer (B). Monomer (A) includes a photoinitiator moiety, while monomer (B) is a monomer reactive with monomer (A) to form a polymer. A method produces the polymeric photoinitiator, a method cross-links the polymeric photoinitiator, and the polymeric photoinitiator is used as a photoinitiator of radical polymerization.Type: GrantFiled: November 11, 2011Date of Patent: June 21, 2016Assignee: Coloplast A/SInventors: Niels Joergen Madsen, Petr Sehnal, Christian B. Nielsen, David George Anderson
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Patent number: 9353211Abstract: The present invention provides polymeric photoinitiators being co-polymers of photoinitiator monomers and at least one further monomer, as well as the photoinitiator monomers being intermediates in the preparation of such polymeric photoinitiators. Additionally there is provided polyacrylate obtained by radical polymerization of at least one acrylate monomer (Ac) in the presence of such polymeric photoinitiators. In the photoinitiator monomers and polymeric photoinitiators, a photoinitiator moiety and a tertiary amine are incorporated into the photoinitiator structure.Type: GrantFiled: May 14, 2013Date of Patent: May 31, 2016Assignee: Coloplast A/SInventors: Niels Joergen Madsen, Petr Sehnal, David George Anderson, Bo Rud Nielsen
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Patent number: 9303104Abstract: A process for photopolymerizing a photopolymerizable compound having at least one ethylenically unsaturated double bond, comprises contacting said photopolymerizable compound with a photoactive oxide and irradiating it, wherein the photoactive oxide includes one or more moieties together with a moiety wherein there are at least 2 atoms between moiety I and moiety II in the additive and where X represents an oxygen or sulphur atom. Novel compounds which exhibit beneficial effects on cure in the presence of oxygen, which may be especially advantageous when LEDs are used, are also described.Type: GrantFiled: July 17, 2013Date of Patent: April 5, 2016Assignee: LAMBSON LIMITEDInventors: David George Anderson, Kevin Harper, Alan Thomas Rose, Petr Sehnal
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Patent number: 9296835Abstract: The present invention provides polymeric photoinitiators being co-polymers of photoinitiator monomers and at least one further monomer, as well as photoinitiator monomers being intermediates in the preparation of such polymeric photoinitiators. Additionally, there is provided polyacrylate obtained by radical polymerization of at least one acrylate monomer (Ac) in the presence of such polymeric photoinitiators. In the photoinitiator monomers and polymeric photoinitiators, a photoinitiator moiety, a hydrolytic stable linker and two polymerizable functional groups are incorporated into the photoinitiator structure.Type: GrantFiled: May 14, 2013Date of Patent: March 29, 2016Assignee: Coloplast A/SInventors: Niels Joergen Madsen, Petr Sehnal, David George Anderson, Bo Rud Nielsen
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Publication number: 20160060243Abstract: The present invention provides novel photoinitiators for polyurethane formation, in which a photoinitiator moiety and a tertiary amine are incorporated into the photoinitiator structure, and thus the polyurethane polymer.Type: ApplicationFiled: November 12, 2015Publication date: March 3, 2016Inventors: Niels Joergen Madsen, Petr Sehnal, Christian B. Nielsen, David George Anderson
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Patent number: 9212160Abstract: The present invention provides novel photoinitiators for polyurethane formation, in which a photoinitiator moiety and a tertiary amine are incorporated into the photoinitiator structure, and thus the polyurethane polymer.Type: GrantFiled: December 19, 2014Date of Patent: December 15, 2015Assignee: Coloplast A/SInventors: Niels Joergen Madsen, Petr Sehnal, Christian B. Nielsen, David George Anderson
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Publication number: 20150203609Abstract: A process for photopolymerising a photopolymerisable compound having at least one ethylenically unsaturated double bond, comprises contacting said photopolymerisable compound with a photoactive oxide and irradiating it, wherein the photoactive oxide includes one or more moieties together with a moiety wherein there are at least 2 atoms between moiety I and moiety II in the additive and where X represents an oxygen or sulphur atom. Novel compounds which exhibit beneficial effects on cure in the presence of oxygen, which may be especially advantageous when LEDs are used, are also described.Type: ApplicationFiled: July 17, 2013Publication date: July 23, 2015Applicant: Lambson LimitedInventors: David George Anderson, Kevin Harper, Alan Thomas Rose, Petr Sehnal
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Publication number: 20150166716Abstract: The present invention provides polymeric photoinitiators being co-polymers of photoinitiator monomers and at least one further monomer, as well as the photoinitiator monomers being intermediates in the preparation of such polymeric photoinitiators. Additionally there is provided polyacrylate obtained by radical polymerization of at least one acrylate monomer (Ac) in the presence of such polymeric photoinitiators. In the photoinitiator monomers and polymeric photoinitiators, a photoinitiator moiety and a tertiary amine are incorporated into the photoinitiator structure.Type: ApplicationFiled: May 14, 2013Publication date: June 18, 2015Inventors: Niels Joergen Madsen, Petr Sehnal, David George Anderson, Bo Rud Nielsen
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Publication number: 20150148441Abstract: The present invention provides polymeric photoinitiators being co-polymers of photoinitiator monomers and at least one further monomer, as well as photoinitiator monomers being intermediates in the preparation of such polymeric photoinitiators. Additionally, there is provided polyacrylate obtained by radical polymerization of at least one acrylate monomer (Ac) in the presence of such polymeric photoinitiators. In the photoinitiator monomers and polymeric photoinitiators, a photoinitiator moiety, a hydrolytic stable linker and two polymerisable functional groups are incorporated into the photoinitiator structure.Type: ApplicationFiled: May 14, 2013Publication date: May 28, 2015Inventors: Niels Joergen Madsen, Petr Sehnal, David George Anderson, Bo Rud Nielsen
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Patent number: 9034941Abstract: The present invention relates to the use of polymeric photoinitiators based on polyalkyletherurethane backbones in the production of hydrophilic gels, in particular hydrogels. The invention relates to methods for manufacturing hydrophilic gels using said polymeric photoinitiators, and the hydrophilic gels thus obtained.Type: GrantFiled: June 22, 2011Date of Patent: May 19, 2015Assignee: Coloplast A/SInventors: Christian B. Nielsen, Niels Joergen Madsen, David George Anderson, Petr Sehnal
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Publication number: 20150105488Abstract: The present invention provides polymeric quaternary ammonium photoinitiators being co-polymers of photoinitiator monomers, as well as quaternary ammonium photoinitiator monomer being valuable intermediates in the preparation of such polymeric photoinitiators. Additionally, there is provided a polyacrylate obtained by radical polymerization of at least one acrylate monomer (Ac) in the presence of such polymeric photoinitiators. In the photoinitiator monomers and polymeric photoinitiators, a photoinitiator moiety and a quaternary ammonium are incorporated into the photoinitiator structure.Type: ApplicationFiled: May 14, 2013Publication date: April 16, 2015Applicant: Coloplast A/SInventors: Niels Joergen Madsen, Petr Sehnal, David George Anderson, Bo Rud Nielsen
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Publication number: 20150105565Abstract: The present invention provides novel photoinitiators for polyurethane formation, in which a photoinitiator moiety and a tertiary amine are incorporated into the photoinitiator structure, and thus the polyurethane polymer.Type: ApplicationFiled: December 19, 2014Publication date: April 16, 2015Inventors: Niels Joergen Madsen, Petr Sehnal, Christian B. Nielsen, David George Anderson
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Patent number: 8946449Abstract: Novel photoinitiators provide for polyurethane formation, in which a photoinitiator moiety and a tertiary amine are incorporated into the photoinitiator structure, and thus the polyurethane polymer.Type: GrantFiled: November 11, 2011Date of Patent: February 3, 2015Assignee: Coloplast A/SInventors: Niels Jørgen Madsen, Petr Sehnal, David George Anderson, Christian B. Nielsen
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Publication number: 20140316060Abstract: The invention relates to a polymer (P) comprising at least one photoinitiator moiety (PI) and at least one dye moiety (DYE), wherein said at least one photoinitiator moiety (PI) and at least one dye moiety (DYE) are covalently linked to said polymer (P). Additionally, the invention relates to said polymer (P) being end-functionalized with optionally substituted acryloyi groups. The fact that both of these moieties are tightly bonded within the polymer, and the cross-linked polymer, means that the opportunities for leaching/migration of these components is reduced or even eliminated. Inks comprising at least one of said polymers are also provided. Methods for the manufacture of the polymers, and for printing are provided.Type: ApplicationFiled: August 24, 2012Publication date: October 23, 2014Inventors: Niels Joergen Madsen, Christian B. Nielsen, Petr Sehnal, David George Anderson
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Publication number: 20130296454Abstract: A polyacrylate is obtained by radical polymerization of at least one acrylate monomer (Ac) in the presence of a polymeric photoinitiator. The polymeric photoinitiator is a co-polymer of at least one photoinitiator monomer (A) with at least one monomer (B), and optional additional monomers (C). Rapid polymerization of the acrylate monomer is provided. A method produces a polyacrylate using the polymeric photoinitiator as described, and a polymeric photoinitiator is used as the photoinitiator of radical polymerization of acrylate monomers.Type: ApplicationFiled: November 11, 2011Publication date: November 7, 2013Inventors: Niels Jørgen Madsen, Petr Sehnel, David George Anderson, Christian B. Nielsen
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Publication number: 20130296577Abstract: Novel photoinitiators provide for polyurethane formation, in which a photoinitiator moiety and a tertiary amine are incorporated into the photoinitiator structure, and thus the polyurethane polymer.Type: ApplicationFiled: November 11, 2011Publication date: November 7, 2013Applicant: Coloplast A/SInventors: Niels Joergen Madsen, Petr Sehnal, Christian B. Nielsen, David George Anderson