There are disclosed amphoteric nano-sized metal oxide particles functionalized with silyl esters of a phosphonate and composites thereof with an acrylate-based monomer, including liquid crystal monomers photopolymerizable at ambient temperature. Also disclosed are the method making such functionalized particular by reacting a metal oxide with a silyl ester of a phosphonate in the presence of a non-aqueous solvent and in an inert atmosphere and the method of making the composites wherein the functionalized particles are admixed with an acrylate-based matrix monomer, including liquid crystal monomers photopolymerizable at ambient temperature. Further disclosed is the method of dental repair wherein the composites are applied to a tooth and photopolymerized.
Stephen T. Wellinghoff - San Antonio TX Hong Dixon - Helotes TX Henry R. Rawls - San Antonio TX Barry K. Norling - San Antonio TX
Assignee:
Southwest Research Institute - San Antonio TX Board of Regents, The University of Texas System - Austin TX
International Classification:
C08J 328
US Classification:
522104, 526116, 526258, 526260, 526262, 526263
Abstract:
Metal oxide and metal oxide-silica nanoparticles are disclosed wherein the surfaces thereof are complexed with a polymerizable, biocompatible, heterocyclic base. Polymerizable compositions are prepared by loading such nanoparticles into acrylate based monomer matrices, which compositions can then be photocured into X-ray opaque, transparent or translucent solids. Methods are disclosed for forming such complexed nanoparticles and compositions and for using such compositions as medical or dental restoratives.
Methods Of Dental Repair Using Functionalized Nanoparticles
There are disclosed amphoteric nano-sized metal oxide particles functionalized with silyl esters of a phosphonate and composites thereof with an acrylate-based monomer, including liquid crystal monomers photopolymerizable at ambient temperature. Also disclosed are the method making such functionalized particular by reacting a metal oxide with a silyl ester of a phosphonate in the presence of a non-aqueous solvent and in an inert atmosphere and the method of making the composites wherein the functionalized particles are admixed with an acrylate-based matrix monomer, including liquid crystal monomers photopolymerizable at ambient temperature. Further disclosed is the method of dental repair wherein the composites are applied to a tooth and photopolymerized.
There are disclosed amphoteric nano-sized metal oxide particles functionalized with silyl esters of a phosphonate and composites thereof with an acrylate-based monomer, including liquid crystal monomers photopolymerizable at ambient temperature. Also disclosed are the method making such functionalized particular by reacting a metal oxide with a silyl ester of a phosphonate in the presence of a non-aqueous solvent and in an inert atmosphere and the method of making the composites wherein the functionalized particles are admixed with an acrylate-based matrix monomer, including liquid crystal monomers photopolymerizable at ambient temperature. Further disclosed is the method of dental repair wherein the composites are applied to a tooth and photopolymerized.
Composites Made Using Functionalized Nanoparticles
There are disclosed amphoteric nano-sized metal oxide particles functionalized with silyl esters of a phosphonate and composites thereof with an acrylate-based monomer, including liquid crystal monomers photopolymerizable at ambient temperature. Also disclosed are the method making such functionalized particular by reacting a metal oxide with a silyl ester of a phosphonate in the presence of a non-aqueous solvent and in an inert atmosphere and the method of making the composites wherein the functionalized particles are admixed with an acrylate-based matrix monomer, including liquid crystal monomers photopolymerizable at ambient temperature. Further disclosed is the method of dental repair wherein the composites are applied to a tooth and photopolymerized.
Benjamin R. Furman - San Antonio TX, US Stephen T. Wellinghoff - San Antonio TX, US Henry R. Rawls - San Antonio TX, US Hong Dixon - Helotes TX, US Barry K. Norling - San Antonio TX, US
Assignee:
Southwest Research Institute - San Antonio TX Board of Regents, The University of Texas Systems - Austin TX
International Classification:
B32B 5/16
US Classification:
428403, 428407
Abstract:
Metal oxide nanoparticles having at least some surface acid sites functionalized with an adhesion promoter and at least some surface acid sites functionalized with a coupling agent. The nanoparticles are useful in forming composites comprising photopolymerizable matrix monomers, and are primarily suitable for dental and medical restoration. In a preferred embodiment, the metal oxide comprises zirconium, and the coupling agent is a zirconate.
Metal Oxide Compositions Composites Thereof And Method
Stephen T. Wellinghoff - San Antonio TX Hong Dixon - San Antonio TX Henry R. Rawls - San Antonio TX Barry K. Norling - San Antonio TX
Assignee:
Southwest Research Institute - San Antonio TX
International Classification:
C07C 6990 C07K 1920
US Classification:
560 70
Abstract:
There are disclosed amphoteric nano-sized metal oxide particles functionalized with silyl esters of a phosphonate and composites thereof with an acrylate-based monomer, including liquid crystal monomers photopolymerizable at ambient temperature. Also disclosed are the method making such functionalized particular by reacting a metal oxide with a silyl ester of a phosphonate in the presence of a non-aqueous solvent and in an inert atmosphere and the method of making the composites wherein the functionalized particles are admixed with an acrylate-based matrix monomer, including liquid crystal monomers photopolymerizable at ambient temperature. Further disclosed is the method of dental repair wherein the composites are applied to a tooth and photopolymerized.
Henry R. Rawls - New Orleans LA Barbara F. Zimmerman - Metairie LA
Assignee:
Research Corporation - New York NY
International Classification:
A61K 718 C08L 2712
US Classification:
523115
Abstract:
An interpolymeric resin and composition therefrom is provided for treating teeth to prevent dental caries by forming a protective barrier and providing a source of fluoride ions for release adjacent to the surface of the tooth. The resin includes an anion-exchange-site bearing monomer carrying fluoride ions, an acrylic comonomer, a crosslinking monomer, and, optionally, a wetting/etching monomer. The resin may have a high degree of crosslinking which then may include filler material to form a composite composition.
Name / Title
Company / Classification
Phones & Addresses
Henry Rawls CEO
STONE MOUNTAIN LITHONIA ALUMNI FOUNDATION, INC
PO Box 871163, Stone Mountain, GA 30087 870 Rose Brooke Dr, Lawrenceville, GA 30045
AT&T since Jan 2007
Sr Carrier Accounts Manager
BellSouth Nov 2001 - Jan 2007
Account Manager
BELLSOUTH - Greater Atlanta Area Aug 1992 - Nov 2001
BUSINESS DEVELOPMENT MANAGER
Education:
Kennesaw State University - Michael J. Coles College of Business 2005 - 2007
EMBA, Business Administration
AT&T since Dec 2007
Sr. Carrier Account Manager
BellSouth Business Aug 1992 - Dec 2006
Account Manager
AT&T Nov 1987 - Aug 1992
National Account Executive
Education:
Kennesaw State University - Michael J. Coles College of Business 2005 - 2007
EMBA, Business
Interests:
Travel, Golf, Softball, Fishing, Singing, Coaching and Mentoring
Honor & Awards:
Whitney Young Academic Scholarship, Phi Alpha Theta Honor Society, Wrestling Scholarship
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