Processes Of Preparing A Solid Polymer From At Least One Phosphorous Containing Monomer; Or Compositions Therefore Patents (Class 522/171)
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Patent number: 6939901Abstract: An adhesive composition comprising (a) an acidic group-containing polymerizable monomer; (b) a polymerizable monomer represented by the general formula (I): wherein R1 is hydrogen atom or methyl group; R2 is a halogen atom, hydroxyl group, mercapto group or —O—R3—OH group, wherein R3 is an alkylene group having 6 to 25 carbon atoms; and Y is oxygen atom or sulfur atom; and (c) a hydrophilic polymerizable monomer, wherein the weight ratio of the polymerizable monomer (b)/acidic group-containing polymerizable monomer (a) is 0.001 to 0.5. The adhesive composition of the present invention can be suitably used for bonding a hard tissue with a resin material in the medical field and the dental field.Type: GrantFiled: May 22, 2002Date of Patent: September 6, 2005Assignee: Kuraray Medical, Inc.Inventors: Kazumitsu Nakatsuka, Koichi Okada
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Patent number: 6900251Abstract: Acrylic ester phosphonic acids of general formula (I), stereoisomers thereof and mixtures of these, wherein n is 1 or 2, on the condition that for n=1 R1 has the meaning and for n=2 R1 has the meaning R2 is a C1 to C12 alkylene radical, C4-C8 cycloalkylene radical or C7 to C15 alkylene phenylene radical; R3 is hydrogen, a C1 to C5 alkyl radical or a C1 to C5 O-alkyl radical; and R4, R5, independently of each other, each stand for a C1 to C5 alkyl radical or a C1 to C5 O-alkyl radical.Type: GrantFiled: June 25, 2003Date of Patent: May 31, 2005Assignee: Ivoclar Vivadent AGInventors: Norbert Moszner, Ulrich Salz, Frank Zeuner, Jörg Zimmermann, Volker Rheinberger, Jorg Angermann, Urs Karl Fischer
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Patent number: 6852773Abstract: The invention relates to a photocurable resin composition comprising: (A) a di or more functional urethane (meth)acrylate compound; (B) a monofunctional (meth)acrylate; (C) a photoinitiator; and (D) a polyoxyalkylene alkyl ether phosphate represented by the following formula (2): and to cured products obtained from the resins composition.Type: GrantFiled: July 12, 2002Date of Patent: February 8, 2005Assignee: DSM IP Assets B.V.Inventors: Takayoshi Tanabe, Jiro Ueda, Tetsuya Yamamura, Takashi Ukachi
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Patent number: 6849669Abstract: The invention relates to macromolecular hydrophilic photocrosslinkers having polymeric backbones of substituted ethylene groups carrying photoactive groups. The photocrosslinkers are capable of producing, when being exposed to light of determined wavelengths above 305 nm, radicals which are retained on the macromolecular photocrosslinkers and reacting so as to accomplish a crosslinked network structure. The invention further relates to the preparation of photocrosslinkers, their use in different aqueous systems and their utility in production of medical devices including ophthalmic lenses.Type: GrantFiled: March 16, 2000Date of Patent: February 1, 2005Assignee: Pharmacia Groningen BVInventors: Kenneth A. Hodd, Keith Alfred Dillingham, Jacqueline deGroot, Hendrik Haitjema
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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: 6790877Abstract: An antibacterial bonding compositions for dental use, which comprises (A) an antibacterial primer that comprises an antibacterial polymerizable monomer having an ethylenic unsaturated group and at least one or more cationic groups selected from the group consisting of ammonium bases, pyridinium bases and phosphonium bases, and a volatile solvent, and (B) an adhesive composition comprising an acid group having polymerizable monomer, a polymerizable monomer, and a polymerization initiator; and an adhesive compositions for dental use, which comprises (P) an adhesive primer comprising an acid group having polymerizable monomer, a hydrophilic polymerizable monomer, and water, and (Q) a bonding agent comprising a polymerizable monomer, and an acylphosphine oxide compound and an &agr;-diketone compound both serving as a polymerization initiator.Type: GrantFiled: September 20, 2001Date of Patent: September 14, 2004Assignee: Kuraray Co., Ltd.Inventors: Kazumitsu Nakatsuka, Koichi Okada, Satoshi Imazato, Shigeyuki Ebisu, Yasuhiko Tsuchitani
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Patent number: 6608120Abstract: Compounds of the formula: having two double bonds which are activated so that they will take part in a polymerization reaction, the double bonds being sufficiently close together to ensure that cyclopolymerization will preferentially occur. These compounds are used as monomers which preferentially are cyclopolymerized under the influence of ultraviolet or thermal radiation in the production of network polymers, for example coatings or binders.Type: GrantFiled: January 17, 2001Date of Patent: August 19, 2003Assignee: Qinetiq LimitedInventors: Paul E Milne, Keith M Blackwood, Steven M Kelly, Alan W Hall, John W Goodby
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Patent number: 6576684Abstract: Disclosed are compositions from which radically initiated oligomers/polymers having a controlled molecular weight, low polydispersity and a vinyl or dienyl end group are prepared. Further subjects of the invention are a process for controlled radical polymerization, oligomers/polymers obtainable by said process and the use of specific addition fragmentation agents for the polymerization process. The addition fragmentation agents are new in part and these are also subject of the present invention. The addition fragmentation agents are of the formula (Ia), (Ib) or (Ic) where Y is a group which activates the double bond towards Michael addition.Type: GrantFiled: February 15, 2001Date of Patent: June 10, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Vincent Desobry, Peter Murer, Anne Schuwey
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Patent number: 6531522Abstract: The present invention relates to a coating for an optical fiber. The coating includes a monomer. The monomer includes an oxyglycidyl (meth)acrylate component. A coating with the monomeric component has exhibited an excellent polymerization rate. The present invention also relates to methods of making such optical fibers coated in accordance with the invention and the coated glass article.Type: GrantFiled: November 14, 2000Date of Patent: March 11, 2003Assignee: Corning IncorporatedInventor: Michael J. Winningham
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Publication number: 20030021943Abstract: A photocurable resin composition comprising:Type: ApplicationFiled: December 3, 2001Publication date: January 30, 2003Inventors: Hideaki Takase, Jirou Ueda, Takayoshi Tanabe, Takashi Ukachi
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Patent number: 6512021Abstract: A photo-curing sealing agent comprising (a)an (meth)acrylate ester having a solubility parameter of 9 to 14, hydrophobic silica, and a photo reaction initiator. This sealing agent has high adhesion property to a cold-rolled steel, a galvanized steel or an aluminum alloy, to which a press oil, a rust-preventing oil or the like adheres.Type: GrantFiled: April 6, 2001Date of Patent: January 28, 2003Assignee: Nichiban Company LimitedInventors: Takanori Sugiki, Yuichi Nishida, Yoshio Kishimoto
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Patent number: 6440519Abstract: A photocurable resin composition which comprises (A) a urethane (meth)acrylate oligomer obtained by the reaction of (a) at least one polyol compound preferably selected from the group consisting of polyester polyols and polycarbonate polyols, (b) a polyisocyanate compound, and (c) a hydroxyl group-containing (meth)acrylate compound; (B) a (meth)acrylolylphosphate; (C) a multifunctional (meth)acrylate compound; and (D) a photopolymerization initiator and, optionally, (E) an organosilyl-containing mercapto compound. The composition exhibits a fast cure speed, and the cured products obtained from the composition exhibit superior adhesion under high temperature-high humidity conditions and metal corrosion properties.Type: GrantFiled: September 25, 1998Date of Patent: August 27, 2002Assignees: DSM N.V., JSR Corporation, Japan Fine Coatings Co., Ltd.Inventors: Hideaki Takase, Ryoji Furuta, Toshihiko Takahashi, Takashi Ukachi, Yuichi Takehana
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Publication number: 20020115808Abstract: Adhesives useful in applying articles, such as tapes, labels, signs, decals, emblems, car moldings, protective or optical films, etc., to surfaces to which articles normally do not adhere well, such as surfaces containing fluorine and polycarbonate, for example. The adhesives include a copolymer of one or more monoethylenically unsaturated alkyl (meth)acrylate monomers, one or more monoethylenically unsaturated secondary or tertiary amide-functional monomers, and optionally one or more acidic monomers.Type: ApplicationFiled: June 11, 1999Publication date: August 22, 2002Inventors: RICHARD L. PELOQUIN, ALBERT I. EVERAERTS, ELLEN O. AELING
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Patent number: 6428862Abstract: An ink for ink-jet recording contains a coloring agent, a polymerizable oligomer, water, and a photopolymerization initiator having a solubility in water of 3 percent by weight or more. Another ink for ink-jet recording contains a coloring agent, a polymerizable oligomer having at least two acryloyl groups and a solubility in water of 10 percent by weight or more, a photopolymerization initiator, and water. The specified polymerizable oligomer or photopolymerization initiator reduces bleeding of the ink on recording media.Type: GrantFiled: April 20, 1999Date of Patent: August 6, 2002Assignee: Canon Kabushiki KaishaInventor: Hiromichi Noguchi
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Patent number: 6399672Abstract: Radiation curable compositions for coatings, adhesives, inks, and molded articles are disclosed.Type: GrantFiled: June 2, 1999Date of Patent: June 4, 2002Assignee: Sartomer Technologies Co., Inc.Inventors: Gary W. Ceska, James P. Horgan, Thomas W. Hazell, William R. Schaeffer
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Patent number: 6355704Abstract: An antibacterial bonding compositions for dental use, which comprises (A) an antibacterial primer that comprises an antibacterial polymerizable monomer having an ethylenic unsaturated group and at least one or more cationic groups selected from the group consisting of ammonium bases, pyridinium bases and phosphonium bases, and a volatile solvent, and(B) an adhesive composition comprising an acid group having polymerizable monomer, a polymerizable monomer, and a polymerization initiator; and an adhesive compositions for dental use, which comprises (P) an adhesive primer comprising an acid group having polymerizable monomer, a hydrophilic polymerizable monomer, and water, and (Q) a bonding agent comprising a polymerizable monomer, and an acylphosphine oxide compound and an &agr;-diketone compound both serving as a polymerization initiator.Type: GrantFiled: August 19, 1999Date of Patent: March 12, 2002Assignee: Kuraray Co., Ltd.Inventors: Kazumitsu Nakatsuka, Koichi Okada, Satoshi Imazato, Shigeyuki Ebisu, Yasuhiko Tsuchitani
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Patent number: 6313189Abstract: Described herein are methods for preparing bioabsorbable polymerization products having interconnecting pore structure by polymerizing compositions containing ethylene glycol- or glycero-oligoester(meth)acrylates monomers and, optionally, other components. The polymerization products are particularly useful for dental lacquers, dental inlays and shaped articles which are bioabsorbable and exhibit an interconnecting pore structure.Type: GrantFiled: May 4, 1999Date of Patent: November 6, 2001Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Robert Wenz, Berthold Nies
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Patent number: 6306924Abstract: This invention provides an improved coating composition for glass substrates that comprises a tetrasubstituted compound. The introduction of a tetrasubstituted compound in a coating composition for a glass substrate, and in particular an optical fiber, acts to delay the rate of deterioration of the glass or optical fiber due to moisture, and improves adhesion between the glass substrate and the coating composition. The introduction of a tetrasubtituted compound into a polymeric coating composition also improves the interlayer adhesion when more than one coating is applied to a glass substrate. This invention further relates to an outer primary coating composition or matrix material that comprises an acid functional ethylenically unsaturated monomer.Type: GrantFiled: August 21, 1998Date of Patent: October 23, 2001Assignee: DSM Desotech, Inc.Inventor: David M. Szum
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Publication number: 20010002410Abstract: This invention provides an improved coating composition for glass substrates that comprises a tetrasubstituted compound. The introduction of a tetrasubstituted compound in a coating composition for a glass substrate, and in particular an optical fiber, acts to delay the rate of deterioration of the glass or optical fiber due to moisture, and improves adhesion between the glass substrate and the coating composition. The introduction of a tetrasubstituted compound into a polymeric coating composition also improves the interlayer adhesion when more than one coating is applied to a glass substrate. This invention further relates to an outer primary coating composition or matrix material that comprises an acid functional ethylenically unsaturated monomer.Type: ApplicationFiled: August 21, 1998Publication date: May 31, 2001Inventor: DAVID M. SZUM
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Patent number: 6194482Abstract: UV-hardenable and thermally hardenable epoxy resins for the underfilling process in electrical and electronic components are provided. A new casting resin component has an increased storage stability at room temperature of at least 6 months and improved characteristics for the underfilling process including faster hardening and lower viscosity. Filler material with a maximum grain size of 20 &mgr;m and a siloxane component are provided in addition to the casting resin formulation.Type: GrantFiled: November 22, 1999Date of Patent: February 27, 2001Assignee: Siemens AktiengesellschaftInventors: Barbara Lehner, Recai Sezi
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Patent number: 6171675Abstract: An adhesive composition including (a) a polymerizable (meth)acrylate compound having a phosphate group, (b) a thiol compound, (c) a polymerizable compound having a double bond and having no phosphate group, and (d) a photopolymerization initiator. The adhesive composition is suitably used for fabrication of optical discs.Type: GrantFiled: May 20, 1999Date of Patent: January 9, 2001Assignee: Nagase-Ciba Ltd.Inventor: Takafumi Iida
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Patent number: 5905099Abstract: A heat-activatable adhesive comprising an acrylic copolymer, which copolymer comprises a monomer consisting of an acrylate or methacrylate ester of a non-tertiary alkyl alcohol having a Tg of about 0.degree. C. or lower; a monomer consisting of an acrylate or methacrylate ester of an alcohol having a Tg of at least about 5.degree. C.; and a functional monomer. Selected embodiments include a retroreflective article comprising a film having a substantially flat surface and a structured surface, the structured surface comprising a plurality of precisely shaped projections, a colored layer disposed on the structured surface and adhered thereto in a plurality of discrete locations, and a heat-activatable adhesive layer disposed on the colored layer.Type: GrantFiled: November 6, 1995Date of Patent: May 18, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Albert I. Everaerts, Yoshinori Araki, Michiru Hata
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Patent number: 5805358Abstract: UV-curable Fresnel lens resin compositions ?1a! comprising a (meth)acrylate containing hydroxyl group and aromatic ring (A1), a urethane group-containing (meth)acrylate (A2) comprising an aromatic diol, an aromatic ring-containing monofunctional (meth)acrylate (A3), and a photopolymerization initiator (B) and ?1b! comprising (A1), a mono- or di(meth)acrylate monomer (A4), and (B), further supplemented with a polyester (C1) comprising an aromatic diol and a phosphate (C2) for the formation of a Fresnel lens on a sheet or plate made of a methyl methacrylate (co)polymer; a Fresnel lens formed by UV cure of composition ?1a! or ?1b!; and a rear projection screen including a sheet or plate carrying said Fresnel lens. The Fresnel lens has high refractive index, antistatic properties and is satisfactory in adhesion to a sheet or plate.Type: GrantFiled: July 29, 1996Date of Patent: September 8, 1998Assignees: Sanyo Chemical Industries, Ltd., Dainippon Printing Co., Ltd.Inventors: Tsutomu Yamashita, Michiharu Okubo, Makoto Honda, Futoshi Osawa
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Patent number: 5800952Abstract: A photopolymerizable composition for a color filter, which comprises a photopolymerization initiator system, a compound having at least one ethylenically unsaturated double bond, a colorant, and a phosphoric (meth)acrylate compound and/or an organic carboxylic anhydride having a molecular weight of at most 800, wherein the content of the colorant is from 20 to 90 wt % based on the total solid content.Type: GrantFiled: October 23, 1996Date of Patent: September 1, 1998Assignee: Mitsubishi Chemical CorporationInventors: Toshiyuki Urano, Ryuichiro Takasaki, Jiro Kamimura, Shingo Ikeda, Noriko Endo, Yuzuru Chika, Tameichi Ochiai
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Patent number: 5576357Abstract: A one-component reactive resin system which is stable in storage but nevertheless can readily be cured completely comprises a mixture of commercially available epoxy resins and phosphorus-containing glycidyl esters, in particular phosphonic acid diglycidyl esters, as well as cationic photoinitiators. The low-viscosity reactive resin systems cannot be cured purely by means of heat and can be processed at high temperatures and in particular can have a high filler content. The reactive resin systems, which are stable to storage even after UV activation, can be cured to flame-resistant molded materials under moderate conditions.Type: GrantFiled: May 3, 1995Date of Patent: November 19, 1996Assignee: Siemens AktiengesellschaftInventors: Heiner Bayer, Winfried Plundrich, Ernst Wipfelder
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Patent number: 5472824Abstract: Photosensitive composition comprising, inter alia, thermoplastic-elastomer block copolymer binders and addition-polymerizable monomer having terminal ethylenically unsaturated end groups wherein at least one monomer has one acrylate or methacrylate group, said monomer forms a homopolymer having a solubility parameter in the range between 7.6 and 9.6 and a glass transition temperature below 0.degree. C. and, further wherein, at least one monomer has more than one acrylate or methacrylate groups, said monomer forms a homopolymer having a solubility parameter in the range between 9.6 and 12.Type: GrantFiled: November 21, 1988Date of Patent: December 5, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventors: Manfred Schober, Hans L. Schroder
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Patent number: 5456984Abstract: A halogen-free radiation curable flame retardant composition that comprises an end-capped oligomer of a phosphonate polyol and a polyisocyanate and an organic monomer.Type: GrantFiled: February 6, 1995Date of Patent: October 10, 1995Assignee: DSM Desotech, Inc.Inventors: Timothy E. Bishop, Erwin S. Poklacki
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Patent number: 5414025Abstract: A method for the crosslinking of polymeric electrolytes is presented. The method achieves crosslinking by means of ultraviolet radiation. The resulting crosslinked polymers are stable and useful as solid state battery electrolytes.Type: GrantFiled: September 30, 1992Date of Patent: May 9, 1995Assignee: The Penn State Research FoundationInventors: Harry R. Allcock, Constance J. Nelson, William D. Coggio
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Patent number: 5321053Abstract: A dental composition comprising a vinyl monomer containing at least one acidic group in the molecule thereof and an initiator capable of photopolymerizing said monomer by visible light, characterized in that said initiator consisting essentially of:(a) a photosensitizer selected from an .alpha.-diketone, a quinone and a derivative thereof, and,(b) an accelerator selected from a compound containing at least one mercapto group in the molecule thereof is provided by the present invention.Type: GrantFiled: February 6, 1990Date of Patent: June 14, 1994Assignee: Kuraray Co., Ltd.Inventors: Kenichi Hino, Junichi Yamauchi, Koji Nishida
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Patent number: 5254432Abstract: The present invention relates to a photosensitive composition comprising an o-quinonediazide compound and a polyurethane resin having a phosphonic acid group, a phosphoric acid group or its ester group. The photosensitive composition of the present invention provides an excellent adhesion to the support, an excellent developability with an aqueous alkali developer, and a high printing durability.Type: GrantFiled: April 26, 1990Date of Patent: October 19, 1993Assignee: Fuji Photo Film Co., Ltd.Inventor: Toshiaki Aoai
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Patent number: 5215860Abstract: Energy polymerizable compositions comprising at least one cyanate monomer and as curing agent an organometallic compound are disclosed. The compositions are useful in applications requiring high performance, such as high temperature performance; in composites, particularly structural composities; structural adhesives; tooling for structural composities; electronic applications such as printed wiring boards and semiconductor encapsulants; graphic arts; injection molding and prepregs; and high performance binders.Type: GrantFiled: August 19, 1988Date of Patent: June 1, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Fred B. McCormick, Katherine A. Brown-Wensley, Robert J. DeVoe
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Patent number: 5069929Abstract: An actinic radiation-curable, rust-preventive coating composition suitable for use in temporary protection of steel products from rusting and having improved rust preventing property even in the presence of oil on the steel surface is disclosed. The coating composition comprises: (A) from 10 to 50 parts by weight of a vinyl polymer having a glass transition temperature of not lower than 5.degree. C. and a solubility parameter in the range of 9 to 11.5; (B) from 50 to 90 parts by weight of one or more polymerizable compounds having at least one unsaturated group capable of initiating reaction by actinic radiation; and (C) from 0.1 to 20 parts by weight of an organic phosphate of the formula: ##STR1## wherein R.sub.1 is hydrogen or methyl; Y is a straight or branched chain alkylene having 2 to 20 carbon atoms which may be interrupted by one or more ester or oxy linkages and/or aromatic rings; and n is an integer of 1 to 3.Type: GrantFiled: November 27, 1989Date of Patent: December 3, 1991Assignees: Sumitomo Metal Industries, Ltd., Nippon Paint Co., Ltd.Inventors: Tetsuzo Arai, Yasushi Yamamoto, Mitsuyuki Raijo, Isao Fujita
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Patent number: 4990291Abstract: Diacetylinic phosophocholines have distinctly different endothermic and exothermic transition temperatures. Lipid tubules are formed by hydrating a diacetylinic phosphocholine at a temperature above its endothermic transition temperature. The hydrated lipid is then cooled slowly to a formation temperature 1.degree. to 10.degree. C. below the exothermic transition temperature to form tubule structures. The tubules structures can be polymerized to form permanent tubules. The tubules can be used in the same manner as a liposome vesicle or they can be metal coated for a variety of applications.Type: GrantFiled: February 29, 1988Date of Patent: February 5, 1991Assignee: The United States of America as represented by the Secretary of the NavyInventors: Paul E. Schoen, Paul Yager, Joel M. Schnur
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Patent number: 4983644Abstract: A dental adhesive composition containing as major components:(a) at least one isocyanate-group-containing urethane prepolymer,(b) at least one isocyanate-group-containing silane compound,(c) at least one radical-polymerizable unsaturated monomer, and(d) at least one initiator selected from the group consisting of redox polymerization initiators and photopolymerization initiatorsis disclosed.This composition is excellent in bonding properties when it is used to bond a living dental tissue with a restoring material such as a metal, organic polymer, and ceramic. Also, this adhesive composition does not require a troublesome pretreatment of the restoring material with an etching agent such as phosphoric acid when the restorating material is required to bond to the living tissue.Type: GrantFiled: April 20, 1989Date of Patent: January 8, 1991Assignee: Mitsubishi Rayon Company, LimitedInventors: Nobuhiro Mukai, Hitoshi Ige, Takayuki Makino, Junko Atarashi
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Patent number: 4977066Abstract: Esters of trihydric or tetrahydric alcohols with alkenylphosphonic or -phosphinic acids, which can be polymerized by means of actinic light, are disclosed. They are combined with polymeric binders, in particular water-soluble polymers, and free-radical-forming photoinitiators to form photopolymerizable mixtures which are suitable for the preparation of photoresists and the production of printing plates. The mixtures show reduced temperature sensitivity and have long shelf lives.Type: GrantFiled: May 22, 1989Date of Patent: December 11, 1990Assignee: Hoechst AktiengesellschaftInventors: Joachim Gersdorf, Hans-Jerg Kleiner
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Patent number: 4968725Abstract: Disclosed are dental adhesive compositions consisting essentially of(a) at least one urethane prepolymer containing one or more isocyanate groups, or a blend of the urethane prepolymer and an inert diluent;(b) at least one radical-polymerizable unsaturated monomer;(c) a photopolymerization initiator;and, if desired,(d) a polymerizable phosphoric ester compound having a specific structure.These dental adhesive compositions can be used to bond a restorative material to dentin without requiring any troublesome pretreatment with an etching agent such as phosphoric acid, and can exhibit bonding power sufficient for practical purposes.Type: GrantFiled: July 20, 1988Date of Patent: November 6, 1990Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Nobuhiro Mukai, Hitoshi Ige, Takayuki Makino, Junko Atarashi
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Patent number: 4966934Abstract: A biologically compatible adhesive dental primer that is shelf stable as a single component adhesive and includes a mixture of an adhesive promoting and polymerizable monomer system having a free radical polymerizable monomer or prepolymer having ethylenic unsaturation and a phosphorus containing adhesion promoter which is free from halogen atoms bonded directly to a phosphorus atom, and optionally a free radical polymerization catalyst, and an accelerator for the catalyst.Type: GrantFiled: June 21, 1989Date of Patent: October 30, 1990Assignee: Dentsply Research & Development Corp.Inventors: Chin-Teh Huang, Gordon B. Blackwell
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Patent number: 4925772Abstract: A cover layer for micro-electronic components and VLSI circuits is provided for protecting the components and circuits against alpha radiation. The cover layer is produced by ultraviolet cross linking of a negative resist, wherein, as a constituent for absorbing the alpha rays, the negative resist contains a substituted triphosphazene of the formula (I) whose organic radicals are bonded to phosphorus via oxygen and wherein, on a statistical average, 1 through 3 radicals have cross-linkable, light-sensitive groups. The cover layer provided good protection from alpha rays, has low shrinkage during curing and, given high thermal resistance, can be combined when mixing with other negative resists.Type: GrantFiled: November 4, 1988Date of Patent: May 15, 1990Assignee: Siemens AktiengesellschaftInventors: Ferdinand Quella, Oskar Nuyken, Klaus Budde, Thomas Suefke
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Patent number: 4816495Abstract: A biologically compatible adhesive that is shelf stable as a single component adhesive and includes a mixture of an adhesive promoting and polymerizable monomer system having a free radical polymerizable monomer or prepolymer having ethylenic unsaturation and a phosphorus containing adhesion promoter which is free from halogen atoms bonded directly to a phosphorus atom, a free radical polymerization catalyst, and an accelerator for the catalyst, the accelerator selected from the group consisting of sulfinic acid or salt thereof, amine or amine salt and mixtures thereof.Type: GrantFiled: December 9, 1986Date of Patent: March 28, 1989Assignee: Dentsply Research & Development Corp.Inventors: Gordon B. Blackwell, Chin-Teh Huang
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Patent number: 4762862Abstract: A process for preparing particulate water-soluble cationic acrylic polymers having a high molecular weight, an excellent water solubility and a uniform particle size with a good productivity by adding a combined photoinitiator system of an azoguanyl compound and other usual photoinitiator to an aqueous monomer solution containing a cationic vinyl monomer, irradiating the aqueous monomer solution in the form of a thin layer on a moving support with ultraviolet rays in at least two stages, and finely dividing the produced aqueous polymer gel in a wet state by a roller cutter and then by a vertical cutter.Type: GrantFiled: March 4, 1987Date of Patent: August 9, 1988Assignee: Dai-ichi Kogyo Seiyaku Co. Ltd.Inventors: Akira Yada, Shusaku Matsumoto, Yoshihiro Kawamori, Yoshitugu Adachi, Yoshio Hatakawa
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Patent number: 4743631Abstract: Adhesion promoters for metal substrates for paints cross-linkable with U.V. or E.B. radiations or with peroxides of general formula: ##STR1## (wherein R, m and n have the meaning which we will specify in the disclosure), obtained by means of the reaction of glycidyl acrylate and/or glycidyl methacrylate with dihydrophosphonoacetic acid.Type: GrantFiled: September 6, 1985Date of Patent: May 10, 1988Assignee: Enichem Sintesi S.p.A.Inventors: Alberto Greco, Renato Butturini, Sergio Arrighetti
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Patent number: 4738870Abstract: A highly adherent photopolymerizable composition comprises a (hydroxy)phosphinylalkyl monomer of the formula ##STR1## wherein R is hydrogen, methyl or ethyl and R' and R" are selected independently from hydrogen and alkyl of 1-10 carbon atoms; at least one copolymerizable ethylenically unsaturated monomer and a photoinitiator.Type: GrantFiled: March 27, 1986Date of Patent: April 19, 1988Assignee: The Dow Chemical CompanyInventors: John G. Green, Gerald K. McEwen, David G. Hunt
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Patent number: 4657941Abstract: A biologically compatible adhesive that is shelf stable as a single component adhesive and includes a mixture of an adhesive promoting and polymerizable monomer system having a free radical polymerizable monomer or prepolymer having ethylenic unsaturation and a phosphorus containing adhesion promoter, a free radical polymerization catalyst, and an accelerator for the catalyst, the accelerator selected from the group consisting of sulfinic acid or salt thereof, amine or amine salt and mixtures thereof.Type: GrantFiled: November 29, 1984Date of Patent: April 14, 1987Assignee: Dentsply Research & Development Corp.Inventors: Gordon B. Blackwell, Chin-Teh Huang
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Patent number: 4657983Abstract: Radiation curable copolymers useful in coating compositions are prepared by reacting part of the glycidyl groups of a glycidyl acrylate copolymer with acrylic or methacrylic acid followed by esterifying the remaining glycidyl groups with phosphoric acid.Type: GrantFiled: December 5, 1984Date of Patent: April 14, 1987Assignee: Interez, Inc.Inventor: Ronald J. Skiscim
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Patent number: 4640936Abstract: A dental composition which when used together with a photopolymerizable dental sealing composition promotes adhesion of resin-based dental restorative materials to the tooth consisting ofa solution of (i) at least one phosphate selected from the group consisting of methacryloyloxyethyl dihydrogen phosphate and bis-(methacryloyloxyethyl) hydrogen phosphate and (ii) a photopolymerization catalyst comprising camphor quinone and an amine, in acetone.Type: GrantFiled: March 21, 1985Date of Patent: February 3, 1987Assignee: Kulzer & Co. GmbHInventors: Ralf Janda, Bernhard Eppinger
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Patent number: 4636533Abstract: A dental composition which when used together with a photopolymerizable dental sealing composition promotes adhesion of resin-based dental restorative materials to the tooth consisting of a solution of tetramethacryloyloxyethyl pyrophosphate and a photopolymerization catalyst comprising camphor quinone and an amine in acetone.Type: GrantFiled: March 21, 1985Date of Patent: January 13, 1987Assignee: Kulzer & Co. GmbHInventors: Ralf Janda, Bernhard Eppinger