Quinone Ring Is Part Of Polynuclear System, E.g., Anthraquinone, Etc. Patents (Class 522/48)
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Patent number: 7803850Abstract: A compound that exhibits excellent color tone stability and physical properties as well as excellent photopolymerization activity over a wide region from near-ultraviolet to visible region, permitting relaxed operation under ambient light, so that wide application can be found in the dental field and photopolymerization industry; and a relevant photopolymerization initiator and hardenable composition. In particular, there is provided a novel camphorquinone derivative having an acylphosphine oxide group [—(C?O)—(P?O)<] in each molecule. Further, there is provided a photopolymerization initiator comprising the camphorquinone derivative having an acrylphosphine oxide group [—(C?O)—(P?O)<] in each molecule as an indispensable component, loaded with at least one member selected from among a polymerization accelerator, a photoacid generator, a photosensitizer and a (bis)acylphosphine oxide, and provided a hardenable composition comprising the initiator.Type: GrantFiled: March 13, 2006Date of Patent: September 28, 2010Assignee: Kabushiki Kaisha ShofuInventors: Kunio Ikemura, Kensuke Ichizawa, Yoshiyuki Jogetsu
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Publication number: 20100222447Abstract: A photo-crosslinkable polyolefin composition comprises a polyolefin, a source of functionality receptive to crosslinking by UV radiation, a cationic photoinitiator and optionally includes a free-radical photoinitiator, a crosslinking accelerator or sensitizer, and other additives such as compatibilizers, inorganic fillers, nanofillers, glass, polymeric and ceramic microspheres, glass fibres, flame retardants, antioxidants, stabilizers, processing aids, foaming agents and pigments. A method for manufacturing a UV-crosslinked polyolefin article comprises forming an article by extruding, moulding or otherwise forming the UV-crosslinkable polyolefin composition and subjecting the article to UV radiation on-line with the extrusion, moulding or other forming operation.Type: ApplicationFiled: May 14, 2010Publication date: September 2, 2010Applicant: SHAWCOR LTD.Inventors: Peter Jackson, Eileen Wan
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Publication number: 20100222448Abstract: Disclosed is an aqueous polyurethane dispersion obtained by dispersing in water a reaction product obtained by reacting a reaction mixture comprising at least one organic, aliphatic, cycloaliphatic or aromatic di, tri or poryisocyanate, at least one isocyanate reactive polycarbonate diol, triol or polyol, at least one compound comprising at least one isocyanate reactive group and at least one free radically polymerisable unsaturated group, and at least one compound comprising at least one isocyanate reactive group and at least one at least dispersing active group, and optionally at least one compound comprising at least two isocyanate reactive groups and having a molecular weight of less than 1000 g/mol.Type: ApplicationFiled: March 16, 2006Publication date: September 2, 2010Applicant: PERSTORP SPECIALTY CHEMICALS ABInventors: Göran Ziegler, David James, Kent Sörensen
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Patent number: 7740482Abstract: Stable and substantially filled cationic dental compositions are described which include: (1) at least one cationically reactive compound (A); (2) at least one dental filler (B); (3) optionally, at least one dispersant (C) composed of at least one organic polymer or copolymer; (4) at least one cationic photoinitiator (D); and (5) optionally, at least one photosensitizer (E). The dental filler (B) is treated with at least one organosilicon coupling agent (F), and at least one compound (G). The organosilicon coupling agent (F) has at least one reactive function (rfA) directly linked to a silicon atom forming after activation of a chemical bond with the dental filler, and at least one reactive function (rfB) not directly linked to a silicon atom, forming after activation, a chemical bond with a reactive function (rfC) of the compound (G).Type: GrantFiled: May 2, 2008Date of Patent: June 22, 2010Assignee: Bluestar Silicones FranceInventors: Jean-Marc Frances, Martial Deruelle, Yves Giraud
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Publication number: 20100130635Abstract: Dental adhesive composition comprising (a) a polymerisable monomer or prepolymer, and (b) a solvent comprising t-butanol.Type: ApplicationFiled: July 27, 2009Publication date: May 27, 2010Inventor: Gordon B. Blackwell
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Publication number: 20100105795Abstract: The present invention relates to liquid stable thiol-acrylate and thiol-vinyl ether compositions. More particularly, in accordance with some embodiments, the compositions may include a (meth)acrylate, a thiol component, an organic acid stabilizer, and a curing initiator. In other embodiments, the compositions may include a curable component selected from a (meth)acrylate, vinyl ether and/or alkenyl ether, a reactive diluent having vinyl ether and acrylate functionality, a thiol component and a stabilizer selected from an organic acid, a hemiacetal ester derivative of an organic acid and/or a phenol acetal.Type: ApplicationFiled: November 11, 2005Publication date: April 29, 2010Applicant: HENKEL CORPORATIONInventors: Eerik Maandi, Edwin Perez, John G. Woods, Joel D. Schall, Seamus Grant
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Superabsorbent polymers having radiation activatable surface cross-linkers and method of making them
Patent number: 7700663Abstract: Superabsorbent polymer particles having improved surface cross-linking and their use in absorbent articles. The superabsorbent polymer particles comprise a water-absorbing resin and the reaction product of a radiation activatable surface cross-linker. The reaction product of the radiation activatable surface cross-linker is present at the surface of the superabsorbent polymer particle. The radiation activatable surface cross-linker includes at least two radiation activatable groups R, which are covalently bound to each other or to at least one spacer group S.Type: GrantFiled: October 3, 2008Date of Patent: April 20, 2010Assignee: The Procter & Gamble CompanyInventor: Andreas Flohr -
Patent number: 7649026Abstract: Radiation curable compositions, such as UV curable ink compositions, contain a polymeric dispersant, a curable material, and a nanoscale pigment particle composition including an organic monoazo laked pigment including at least one functional moiety, and a sterically bulky stabilizer compound including at least one functional group, wherein the functional moiety of the pigment associates non-covalently with the functional group of the stabilizer; and the presence of the associated stabilizer limits the extent of particle growth and aggregation, to afford nanoscale-sized pigment particles.Type: GrantFiled: November 1, 2007Date of Patent: January 19, 2010Assignee: Xerox CorporationInventors: C. Geoffrey Allen, Rina Carlini, Sandra J. Gardner
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Publication number: 20090298962Abstract: The present invention pertains to a composition comprising (a) a photolatent base; (b) a blocked isocyanate or blocked isothiocyanate and (c) a hydrogen donor compound; and its applications.Type: ApplicationFiled: September 19, 2007Publication date: December 3, 2009Inventors: Katia Studer, Kurt Dietliker, Tunja Jung
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Publication number: 20090275673Abstract: The use of hindered phenol containing anti-oxidants enable arylcyclobutene-based formulations to be cured in oxygen containing environments such as air without unacceptable degradation in key properties of dielectric constant, water uptake, or transmittance.Type: ApplicationFiled: October 12, 2005Publication date: November 5, 2009Inventors: Ying Hung So, Edmund J. Stark, Jack E. Hetzner, Shellene K. Thurston
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Patent number: 7585515Abstract: The present invention relates to a novel composition for dental, orthopedic and drug delivery purpose. Specifically, it relates to composition comprising an admixture of a resorbable bone substitute and a crosslinkable prepolymer. It also relates to the composition formed by crosslinking the admixture.Type: GrantFiled: May 12, 2008Date of Patent: September 8, 2009Assignee: A Enterprises, Inc.Inventors: Arthur Ashman, V. Prasad Shastri
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Publication number: 20090163615Abstract: The present application provides a latent ink-jet ink formulation suitable as solder mask. The composition generally comprises: (a) at least one compound capable of self cross-linking (USM); (b) at least one phenolic resin; (c) at least one solvent; (d) at least one mineral filler; (e) at least one polyol; and (f) at least one photoinitiator.Type: ApplicationFiled: August 31, 2006Publication date: June 25, 2009Inventors: Izhar Halahmi, Shalom Luski, Michal Cohen
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Patent number: 7524889Abstract: Dental compositions and methods of curing the composition utilizing a light emitting diode (LED) curing unit. According to one aspect, a composition comprising a multiacrylate compound, an initiator including camphorquinone and at least one amine, and a colorless anti-yellowing agent produces a scratch free surface having no oxygen inhibited layer when cured with the LED curing unit.Type: GrantFiled: July 6, 2006Date of Patent: April 28, 2009Assignee: Bisco, Inc.Inventors: Li Feng, Byoung I. Suh
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Publication number: 20090076182Abstract: An object of the present invention is to provide a one-pack type dental adhesive composition which can exhibit excellent adhesion to any material, for example, dental ceramics, organic composites containing inorganic compounds, dental noble metals and dental non-noble metals, and also has excellent storage stability. Disclosed is a one-pack type dental adhesive composition comprising a silane coupling agent as a component (a), an acidic group-containing polymerizable monomer as a component (b), a sulfur atom-containing polymerizable monomer as a component (d), and other components.Type: ApplicationFiled: August 26, 2008Publication date: March 19, 2009Inventors: Hisaki Tanaka, Toshihide Fujii, Yutaka Yamaguchi, Mikito Deguchi
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Publication number: 20090069459Abstract: A liquid radiation and thermally curing composition characterized in, that said composition comprises at least one ester between at least one tri or polyalcohol and acrylic and/or methacrylic acid, which ester has at least two hydroxyl groups, at least one acrylic or methacrylic double bond, a hydroxyl value of 50-500 mg KOH/g and a double bond concentration of 1-10 mmoles/g, at least one crosslinking agent for hydroxyl functional compounds, which crosslinking agent optionally has at least one olefinic double bond, and an additive package comprising at least one photoinitiator, radical scavenger, light stabilizer, wetting agent and/or leveling agent, and optionally at least one monomeric or oligomeric reactive diluent.Type: ApplicationFiled: October 2, 2006Publication date: March 12, 2009Inventors: David James, Kent Sorensen, Henrik Bernquist
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Publication number: 20090048364Abstract: A dental, paste/paste self-adhesive cement includes a polymerizable acidic monomer or monomer mixtures; a polymerizable non-acidic monomer or monomer mixtures, a photo-initiator and/or a co-initiator, a reducing agent such as a benzoylthiourea and other substituted benzoylthiourea, an oxidizing agent, a thermal stabilizer and a glass filler.Type: ApplicationFiled: April 25, 2008Publication date: February 19, 2009Inventor: Huaibing Liu
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Publication number: 20080318188Abstract: The present invention provides polymerizable dental compositions comprising a dimer acid-derived monomer such as a dimer acid-derived di(meth)acrylate monomer.Type: ApplicationFiled: December 29, 2004Publication date: December 25, 2008Applicant: The Regents of the University of ColoradoInventors: Jeffrey W. Stansbury, Christopher N. Bowman, Marianela Trujillo
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Publication number: 20080311308Abstract: The present invention relates to compositions for functional films, and more particularly to compositions for functional films such as a heat ray screening film compatible with hydrolic or alcoholic and anti-hydrolic resin binder, a near infrared screening film, a chrominance correcting film, a conductive film, a magnetic film, a ferromagnetic film, a dielectric film, a ferroelectric film, an electrochromic film, an electroluminescence film, an insulating film, a reflecting film, a reflection preventing film, a catalyst film, a photocatalyst film, a light selectively absorbing film, a hard film, and a heat resisting film, films formed therefrom, and a method of forming the compositions and the films.Type: ApplicationFiled: August 13, 2004Publication date: December 18, 2008Inventors: Hae-Wook Lee, Jin-Hong Park
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Superabsorbent polymers having radiation activatable surface cross-linkers and method of making them
Patent number: 7449219Abstract: Superabsorbent polymer particles with improved surface cross-linking for use in absorbent articles and a process for making the superabsorbent polymer particles. The superabsorbent polymer particles include a water-absorbing resin and the reaction product of a radiation activatable surface cross-linker. The reaction product of the radiation activatable surface cross-linker is present at surfaces of the superabsorbent polymer particles. The radiation activatable surface cross-linker includes at least two radiation activatable groups R, which are covalently bound to each other or to at least one spacer group S.Type: GrantFiled: December 8, 2006Date of Patent: November 11, 2008Assignee: The Procter & Gamble CompanyInventor: Andreas Flohr -
Publication number: 20080275153Abstract: The present invention relates to an ultraviolet curable resin of the present invention which is prepared from alkyl(meth)acrylates, glycidyl(meth)acrylate, and substituted or unsubstituted acrylic acid, wherein the resin contains terminal vinyl group in amount of at least 50 wt % based on the resin and its glass transition temperature (Tg) is in a range of from 40˜100° C. The present invention also relates to a resin composition containing the ultraviolet curable resin.Type: ApplicationFiled: August 16, 2007Publication date: November 6, 2008Applicant: CHANG CHUN PLASTICS CO., LTD.Inventors: Kuen-Yuan Hwang, An-Pang Tu, Ping-Chieh Wang, Chie-Wei Yang
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Publication number: 20080188584Abstract: An autoxidisable architectural coating composition suitable for application to surfaces found in and around buildings at ambient temperatures and in natural daylight wherein surface autoxidation of the composition is promoted by a combination of low concentrations of metal ions (especially manganese or vanadium) and 2,2-dimethoxy 1,2-diphenylethan-1-one as photoinitiator. The composition avoids the need to use more than trace amounts cobalt ions which are rumoured to be carcinogenic yet achieves adequately fast rates of autoxidation. Preferably the use of cobalt is a avoided altogether. The use of the low concentrations of the other metal ions reduces discolouration of the compositions often to levels below what is achieved using conventional cobalt promoters. Also a modification in which surface autoxidation is promoted by a combination of 2,2-dimethoxy-1,2-diphenylethan-1-one and trace amounts of cobalt ions in the absence of other surface autoxidation promoting metal ions.Type: ApplicationFiled: June 11, 2006Publication date: August 7, 2008Inventor: Philip Louis Taylor
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Patent number: 7407616Abstract: A method for curing polymerizable compositions by irradiating the compositions with a pulsed light that is emitted from an LED. The method of the present invention is especially suitable for curing dental compositions.Type: GrantFiled: February 11, 2005Date of Patent: August 5, 2008Assignee: New Photonics, LLCInventors: Noureddine Melikechi, Ranjit S. Pandher
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Publication number: 20080171801Abstract: The invention is directed to a thick film getter composition comprising: (a) desiccant material; dispersed in (b) organic medium comprising (1) curable organic polymeric binder; (2) monomer; and (3) photoinitiator.Type: ApplicationFiled: March 24, 2008Publication date: July 17, 2008Inventors: Yong Cho, Jay Robert Dorfman
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Patent number: 7364834Abstract: A polymer having ?,? unsaturated groups and a group that generates a free radical when exposed to actinic radiation. The polymer may be self-cross-linking.Type: GrantFiled: July 13, 2005Date of Patent: April 29, 2008Assignee: Rohm and Haas Electronic Materials LLCInventors: Robert K. Barr, Edgardo Anzures, Daniel E. Lundy
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Patent number: 7348055Abstract: A grafting reagent and related method of using the reagent to form a polymeric layer on a support surface, and particularly a porous support surface, in a manner that provides and/or preserves desired properties (such as porosity) of the surface. The reagent and method can be used to provide a thin, conformable, uniform, uncrosslinked coating having desired properties onto the surface of a preformed, and particularly a porous, polymeric substrate.Type: GrantFiled: December 21, 2001Date of Patent: March 25, 2008Assignee: SurModics, Inc.Inventors: Ralph A. Chappa, Sean M. Stucke, Richard A. Amos, Terrence P. Everson, Stephen J. Chudzik, Dale G. Swan, Peter H. Duquette
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Publication number: 20080045619Abstract: A photo-crosslinkable polyolefin composition comprises a polyolefin, a source of functionality receptive to crosslinking by UV radiation, a cationic photoinitiator and optionally includes a free-radical photoinitiator, a crosslinking accelerator or sensitizer, and other additives such as compatibilizers, inorganic fillers, nanofillers, glass, polymeric and ceramic microspheres, glass fibres, flame retardants, antioxidants, stabilizers, processing aids, foaming agents and pigments. A method for manufacturing a UV-crosslinked polyolefin article comprises forming an article by extruding, moulding or otherwise forming the UV-crosslinkable polyolefin composition and subjecting the article to UV radiation on-line with the extrusion, moulding or other forming operation.Type: ApplicationFiled: February 28, 2007Publication date: February 21, 2008Applicant: SHAWCOR LTD.Inventors: Peter Jackson, Eileen Wan
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Patent number: 7321004Abstract: A method for curing polymerizable compositions by irradiating the compositions with light that is emitted from an LED. The method of the present invention is especially preferred for curing dental compositions.Type: GrantFiled: February 11, 2005Date of Patent: January 22, 2008Assignee: New Photonics, LLCInventors: Noureddine Melikechi, Ranjt S. Pandher
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Patent number: 7183333Abstract: Photoinitiated reactions especially in photopolymer technology, as well as photoinitiated colour forming reactions are achievable by applying a reactive substrate selected from a polymerisable and/or crosslinkable composition and a colour changing substance to a support, activating a latent photoinitiator applied with the reactive substance and subsequently exposing the reactive substrate with the resulting photoinitiator therein to photoreaction conditions wherein actinic radiation causes the substrate to undergo polymerisation and/or crosslinking or colour change respectively, the substrate being locally modified in its constitution as a result of its exposure to actinic radiation at least one stage of the method, so that the resulting polymerised and/or crosslinked composition or colour changed substance corresponds in its distribution on the support to the locations of the modification of the substrate.Type: GrantFiled: August 3, 2001Date of Patent: February 27, 2007Assignee: Lintfield LimitedInventor: Grant Bradley
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Patent number: 7148265Abstract: A polymer having ?,? unsaturated groups and a group that generates a free radical when exposed to actinic radiation. The polymer may be self-cross-linking.Type: GrantFiled: March 18, 2003Date of Patent: December 12, 2006Assignee: Rohm and Haas Electronic Materials LLCInventors: Robert K. Barr, Edgardo Anzures, Daniel E. Lundy
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Patent number: 7129281Abstract: The present invention provides a one-bottle dental bonding composition that provides a bonding layer excellent in bonding strength, independent of the skill of the practitioners, and, more preferably, that releases fluoride ion gradually into oral cavity over an extended period of time. The one-bottle dental bonding composition comprises a radical polymerizable monomer (A) having an acidic group in the molecule, another radical polymerizable monomer (B), a photopolymerization initiator (C) and a water-soluble organic solvent (D), and is substantially free of water.Type: GrantFiled: March 18, 2003Date of Patent: October 31, 2006Assignee: Dentsply-Sankin K.K.Inventor: Satoshi Fujiwara
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Patent number: 7087658Abstract: A method of forming a polymer layer on a support surface by the use of a coating agent and polymerizable compounds. The coating agent provides photoreactive groups adapted to attach the agent to the surface, as well as photoreactive groups adapted to remain unattached to the surface, and thus serve as photoinitiators for the activation of polymerizable compounds in order to form a polymer layer thereon. Also provided are coating agents, per se, as well as a method of using such agents and the resultant surfaces and devices fabricated therefrom.Type: GrantFiled: December 23, 2003Date of Patent: August 8, 2006Assignee: SurModics, Inc.Inventors: Dale G. Swan, Richard A. Amos, Terrence P. Everson, Stephen J. Chudzik, Ralph A. Chappa, Sean M. Stucke, Peter H. Duquette
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Patent number: 6964985Abstract: The present invention provides a dental material that includes a hardenable resin system and a first initiator system capable of hardening the hardenable resin.Type: GrantFiled: July 3, 2003Date of Patent: November 15, 2005Assignee: 3M Innovative Properties Co.Inventors: Naimul Karim, Joel D. Oxman, Ahmed S. Abuelyaman, Babu N. Gaddam
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Patent number: 6953832Abstract: Dental material containing an amide of the general formula BXn in which B stands for a hydrocarbon radical with 1 to 5 carbon atoms, which can contain one or more of the groups O, S, NH, CO—NH, O—CO—NH and/or NH—CO—NH, and which is substituted n times with the group X, X stands for the group which is bound via the nitrogen atom or via C-2 to the radical B, the bond site not connected to B carrying a radical R2, R1 being hydrogen, an alkyl group with 1 to 20 carbon atoms or a phenyl radical, two or more radicals X being able to share a radical R1 and R1 also being able to be a constituent of the radical B, R2 being hydrogen, an alkyl group with 1 to 20 carbon atoms or a phenyl radical, and n being a number from 2 to 5.Type: GrantFiled: January 14, 2002Date of Patent: October 11, 2005Assignee: Ivoclar Vivadent AGInventors: Norbert Moszner, Frank Zeuner, Volker Rheinberger, Jörg Angermann, Thomas Völkel
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Patent number: 6897248Abstract: The present invention discloses an ultraviolet light curable ferromagnetic composition and method for making such a composition that may be used to produce a ferromagnetic coating on a suitable substrate. These coatings may be used to produce printed capacitors and inductors. The disclosed composition does not contain any significant amount of volatile organic solvents that do not become incorporated in the active layer after curing.Type: GrantFiled: February 24, 2004Date of Patent: May 24, 2005Assignee: Allied PhotoChemical, Inc.Inventor: Roy C. Krohn
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Patent number: 6887918Abstract: A fast-curing, low viscosity composition for coating an optical waveguide, more specifically, an optical fiber, and optical fibers coated therewith are disclosed. The coating composition is a radiation curable composition containing: a radiation curable oligomer, a free radical photoinitiator, and a mixture of reactive diluents including a low molecular weight (meth)acrylate having tri-, tetra-, penta- or higher functionality.Type: GrantFiled: October 8, 2002Date of Patent: May 3, 2005Assignee: AlcatelInventors: Igor V. Khudyakov, Michael B. Purvis, Robert J. Overton
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Patent number: 6824858Abstract: A photocurable and thermosetting composition which is useful in forming a matte film and can be developed with an aqueous alkaline solution is provided. The composition comprises (A) a photosensitive prepolymer obtained by causing a saturated or unsaturated polybasic acid anhydride to react with a hydroxyl group of an esterification product of a novolak type epoxy compound and an unsaturated monocarboxylic acid, (B) a carboxyl group-containing copolymer resin, (C) a photopolymerization initiator, (D) a diluent, (E) a polyfunctional epoxy compound having at least two epoxy groups in its molecule, and, when necessary, (F) an inorganic filler. The composition may further comprise (G) an epoxy resin curing agent. This composition can be advantageously used for the formation of a solder resist on a printed circuit board.Type: GrantFiled: August 13, 2002Date of Patent: November 30, 2004Assignee: Taiyo Ink Manufacturing Co., Ltd.Inventors: Satoru Iwaida, Yoshihiro Ohno, Masayuki Isono, Akio Sekimoto
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Patent number: 6812266Abstract: A dental adhesive composition for bonding dental restoratives to dentin and enamel provides a one-part self-etching, self-priming dental adhesive composition having hydrolysis stable polymerizable acidic adhesive monomers.Type: GrantFiled: August 6, 2002Date of Patent: November 2, 2004Assignee: Dentsply DeTrey GmbHInventors: Joachim E. Klee, Uwe Walz
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Patent number: 6784222Abstract: An electroconductive coating composition which function as a sealer/primer includes (a) a radiation curable, polymerizable compound, (b) a photoinitiator and (c) a conductive pigment. The conductive pigment may be a mixture of pigment including a blend of conductive pigments as well as conductive pigment. Conductivity enhancers may, also, be added. The polymerizable compound is, preferably, a U curable acrylate functional compound which may be monofunctional or polyfunctional. The composition is particularly useful for sealing and priming SMC panels.Type: GrantFiled: March 6, 2002Date of Patent: August 31, 2004Inventors: Frank David Zychowski, Joseph C. Sgro
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Publication number: 20040137164Abstract: A method of forming a polymer layer on a support surface by the use of a coating agent and polymerizable compounds. The coating agent provides photoreactive groups adapted to attach the agent to the surface, as well as photoreactive groups adapted to remain unattached to the surface, and thus serve as photoinitiators for the activation of polymerizable compounds in order to form a polymer layer thereon. Also provided are coating agents, per se, as well as a method of using such agents and the resultant surfaces and devices fabricated therefrom.Type: ApplicationFiled: December 23, 2003Publication date: July 15, 2004Applicant: SURMODICS, INC.Inventors: Dale G. Swan, Richard A. Amos, Terrence P. Everson, Stephen J. Chudzik, Ralph A. Chappa, Sean M. Stucke, Peter H. Duquette
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Patent number: 6716893Abstract: The present invention discloses an ultraviolet light curable ferromagnetic composition and method for making such a composition that may be used to produce a ferromagnetic coating on a suitable substrate. These coatings may be used to produce printed capacitors and inductors. The disclosed composition does not contain any significant amount of volatile organic solvents that do not become incorporated in the active layer after curing.Type: GrantFiled: July 11, 2002Date of Patent: April 6, 2004Assignee: UV Specialties, Inc.Inventor: Roy C. Krohn
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Patent number: 6713526Abstract: A curable slurry for forming ceramic microstructures on a substrate using a mold. The slurry is a mixture of a ceramic powder, a fugitive binder, and a diluent. The ceramic powder has a low softening temperature in a range of about 400° C. to 600° C. and a coefficient of thermal expansion closely matched to that of the substrate. The fugitive binder is capable of radiation curing, electron beam curing, or thermal curing. The diluent promotes release properties with the mold after curing the binder or quick and complete burn out of the binder during debinding.Type: GrantFiled: January 24, 2002Date of Patent: March 30, 2004Assignee: 3M Innovative Properties CompanyInventors: Kenneth R. Dillon, Kyung H. Moh, Thomas Edward Wood, Raymond C. Chiu, Vincent Wen-Shiuan King, Richard P. Rusin
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Patent number: 6669994Abstract: A method of forming a polymer layer on a support surface by the use of a coating agent and polymerizable compounds. The coating agent provides photoreactive groups adapted to attach the agent to the surface, as well as photoreactive groups adapted to remain unattached to the surface, and thus serve as photoinitiators for the activation of polymerizable compounds in order to form a polymer layer thereon. Also provided are coating agents, per se, as well as a method of using such agents and the resultant surfaces and devices fabricated therefrom.Type: GrantFiled: April 23, 2001Date of Patent: December 30, 2003Assignee: SurModics, Inc.Inventors: Dale G. Swan, Richard A. Amos, Terrence P. Everson, Stephen J. Chudzik, Ralph A. Chappa, Sean M. Stucke, Peter H. Duquette
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Patent number: 6649669Abstract: A single solution bonding formulation for dental applications comprising a plurality of at least one self-polymerizable polyvinyl acidic monomer or at least two different polymerizable polyvinyl acidic monomers, a calcium phosphate filler, at least one photoinitiator, optionally an accelerator, optionally a solvent, and optionally a fluoride additive is provided. Additionally, a method for treating enamel, dentin, and/or pulp with the same single solution bonding formulation is provided. The single solution bonding formulation provides for the release of calcium, phosphate and/or fluoride ions which are sufficient in situ to form hydroxyapatite and/or fluorapatite.Type: GrantFiled: December 28, 2001Date of Patent: November 18, 2003Assignee: American Dental Association Health FoundationInventor: Sabine Dickens
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Patent number: 6624211Abstract: The present invention provides a dental material that includes a hardenable resin system and a first initiator system capable of hardening the hardenable resin.Type: GrantFiled: May 16, 2001Date of Patent: September 23, 2003Assignee: 3M Innovative Properties CompanyInventors: Naimul Karim, Joel D. Oxman, Ahmed S. Abuelyaman, Babu N. Gaddam
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Publication number: 20030082355Abstract: A photocurable and thermosetting composition which is useful in forming a matte film and can be developed with an aqueous alkaline solution is provided. The composition comprises (A) a photosensitive prepolymer obtained by causing a saturated or unsaturated polybasic acid anhydride to react with a hydroxyl group of an esterification product of a novolak type epoxy compound and an unsaturated monocarboxylic acid, (B) a carboxyl group-containing copolymer resin, (C) a photopolymerization initiator, (D) a diluent, (E) a polyfunctional epoxy compound having at least two epoxy groups in its molecule, and, when necessary, (F) an inorganic filler. The composition may further comprise (G) an epoxy resin curing agent. This composition can be advantageously used for the formation of a solder resist on a printed circuit board.Type: ApplicationFiled: August 13, 2002Publication date: May 1, 2003Inventors: Satoru Iwaida, Yoshihiro Ohno, Masayuki Isono, Akio Sekimoto
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Patent number: 6482871Abstract: The invention provides a pretreatment method and primer that is applied directly to the hard tissue. The invention has particular utility for adhering to or coating sclerotic dentin and cervical enamel or for adhering to or coating hard tissue in a high humidity environment. The primer enables formation of extremely strong bonds to dentin. The method comprises the steps of: (a) applying to the hard tissue adhesively effective amounts of an acid and a water-dispersible film former comprising a polymer and (b) hardening the film former. Primer compositions are provided for use in this method, comprising a mixture of an acid and a film former comprising a polymer prior to hardening, the mixture being in the form of a film atop the hard tissue.Type: GrantFiled: June 5, 1995Date of Patent: November 19, 2002Assignee: 3M Innovative Properties CompanyInventors: Steven M. Aasen, F. Andrew Ubel, III, Joel D. Oxman, Sumita B. Mitra, Jon W. Fundingsland
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Patent number: 6451869Abstract: Cyclopentadienylplatinum (IV) compounds having C7-20 aromatic radical substitution on the cyclopentadienyl ring have been found to impart enhanced cure speed and shelf-life stability to irradiation-curable silicone mixtures.Type: GrantFiled: September 13, 2000Date of Patent: September 17, 2002Assignee: General Electric CompanyInventor: Matthew David Butts
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Publication number: 20020068225Abstract: New photosensitive acrylic material compositions for fabrication of holographic recording materials (HRMs) are provided. These compositions are comprised of polymerizable acrylic monomers and light absorbing dyes, and when polymerized they are thermally stable, light sensitive, hard and inert to common chemicals. Methods of fabricating HRMs with symmetric concentration distribution of the dye are also provided.Type: ApplicationFiled: November 16, 2001Publication date: June 6, 2002Inventors: Ryszard Burzynski, Deepak N. Kumar, Saswati Ghosal, Dale R. Tyczka
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Patent number: 6384103Abstract: Radiation-sensitive resin composition having excellent and well-balanced various properties required for photoresist, such as sensitivity, pattern profile and heat resistance. The radiation-sensitive resin composition comprises an alkali-soluble resin and a photosensitizer having a quinonediazide group. The alkali-soluble resin is a phenol novolak resin which is treated by a thin film distillation method to selectively remove monomer and dimer. The novolak resin treated by thin film distillation method preferably shows the following ratio in area in its profile in gel permeation chromatography with a detector at 280 nm: B2/B1≧0.95; C2/(A2+B2+C2)≦0.060 wherein A1 is a high-molecular region, B1 is a middle-molecular region, and C1 is a monomer/dimer region before the treatment of the starting novolak resin, and A2, B2 and C2 are the corresponding counterparts after the treatment of the novolak resin.Type: GrantFiled: December 1, 2000Date of Patent: May 7, 2002Assignee: Clariant Finance (BVI) LimitedInventors: Akio Arano, Kenji Yamamoto
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Patent number: RE40967Abstract: A curable slurry for forming ceramic microstructures on a substrate using a mold. The slurry is a mixture of a ceramic powder, a fugitive binder, and a diluent. The ceramic powder has a low softening temperature in a range of about 400° C. to 600° C. and a coefficient of thermal expansion closely matched to that of the substrate. The fugitive binder is capable of radiation curing, electron beam curing, or thermal curing. The diluent promotes release properties with the mold after curing the binder or quick and complete burn out of the binder during debinding.Type: GrantFiled: March 29, 2006Date of Patent: November 10, 2009Assignee: 3M Innovative Properties CompanyInventors: Kenneth R. Dillon, Kyung H. Moh, Thomas E. Wood, Raymond C. Chiu, Vincent W. King, Richard P. Rusin