Processes Of Preparing A Solid Polymer From At Least One Silicon Containing Monomer; Or Compositions Therefore Patents (Class 522/172)
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Patent number: 6069185Abstract: This invention relates to radiation curable compositions comprising an alkenyl ether functional polyisobutylene, a cationic photoinitiator, a free radical photoinitiator, and an alkenyl ether compound which is free of isobutylene units. The radiation curable compositions can further comprise an alkylphenol. This invention also relates to hydrocarbon silicone alkenyl ether compounds. The radiation curable compositions exhibit a low cure energy, have a high moisture vapor barrier, high damping characteristics, and a high refractive index, and provide a barrier to corrosive vapors and have maintained or enhanced modulus, tensile strength, and toughness.Type: GrantFiled: November 25, 1998Date of Patent: May 30, 2000Assignees: Dow Corning Asia, Ltd., Dow Corning CorporationInventors: Maneesh Bahadur, Toshio Suzuki
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Patent number: 6063888Abstract: A liquid radiation curable resin composition comprising a polydimethylsiloxane compound which has (i) at least two urethane bonds in one molecule, (ii) an unreactive organic group at at least one of the ends of the molecule, and (iii) a radical curable ethylenically unsaturated group at the other end of the molecule. The resin composition exhibits superior shelf life in a liquid state and produces cured products having slippery surface. It is suitable as a coating material for optical fibers.Type: GrantFiled: October 9, 1998Date of Patent: May 16, 2000Assignees: DSM N.V., JSR CorporationInventors: Yoshikazu Yamaguchi, Junji Yoshizawa, Zen Komiya, Takashi Ukachi
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Patent number: 6040353Abstract: This invention relates to a radiation curable silicone compositions. More particularly this invention relates to radiation curable silicone compositions comprising a vinyl ether functional silicon compound, a cationic photoinitiator, a free radical photoinitiator, and dodecylphenol. The compositions of this invention can further comprise a vinyl ether compound which is free of silicon atoms. The radiation curable silicone compositions of this invention are useful as release coating compositions which are especially suitable for release of pressure sensitive adhesives.Type: GrantFiled: November 25, 1998Date of Patent: March 21, 2000Assignee: Dow Corning CorporationInventors: Shedric Oneal Glover, Chi-long Lee, Wen-hong Tong
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Patent number: 6034151Abstract: Polymerizable and hydrolyzable vinylcyclopropane silanes and in particular silicic acid condensates which can be prepared therefrom are described, which exhibit only a low volume shrinkage on polymerization and produce polymers with high mechanical strength and therefore can be used above all as dental material or a constituent thereof.Type: GrantFiled: March 25, 1998Date of Patent: March 7, 2000Assignee: Ivoclar AGInventors: Norbert Moszner, Thomas Voelkel, Frank Zeuner, Sabine Stein, Volker Rheinberger
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Patent number: 6022050Abstract: A release coating composition containing about 50 to about 75 wt. % of an epoxy functional silicone; about 8 to about 25 wt. % of a reactive solvent; about 5 to about 25 wt. % of a reactive diluent; about 6 to about 12 wt. % of a wax-treated silica powder; and, about 2 to about 4 wt. % of a photoinitiator is disclosed. The composition is useful in preparing a low-gloss release coating for use on linerless labels.Type: GrantFiled: September 2, 1998Date of Patent: February 8, 2000Assignee: Monarch Marking Systems, Inc.Inventor: James R. Kline
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Patent number: 6017974Abstract: An activation energy beam curable coating composition containing (A) a polymer having an organopolysiloxane unit and a quaternary ammonium salt unit and (B) a polyfunctional acrylate having 3 or more acryloyl groups in the molecule is disclosed. A film excellent in abrasion resistance, antistatic properties and transparency can be formed by applying the activation energy beam curable coating composition of the present invention to the surface of a material, and irradiating the coated surface with an activation energy beam.Type: GrantFiled: April 2, 1998Date of Patent: January 25, 2000Assignee: Mitsubishi Chemical CorporationInventors: Noritaka Hosokawa, Kazuhide Hayama
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Patent number: 6013693Abstract: Provided by the invention is an ultraviolet-curable silicone-based releasing agent suitable for use as a coating agent on the back surface of a pressure-sensitive adhesive tape and releasable protective sheet on a pressure-sensitive adhesive label with an advantage that the coating layer thereof is curable by ultraviolet irradiation in an atmosphere which is not completely free from oxygen having an inhibiting effect on the curing reaction of the coating layer contributing to cost reduction for the production of pressure-sensitive adhesive tapes and labels. The releasing composition comprises, in addition to a radical-polymerizable organopolysiloxane having (meth)acryloxyalkyl groups and a photopolymerization initiator, a tertiary amine compound such as isoamyl 4-dimethylamino benzoate and 2-ethylhexyl 4-dimethylamino benzoate in a limited amount.Type: GrantFiled: June 26, 1998Date of Patent: January 11, 2000Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masatoshi Takahashi, Shinji Irifune
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Patent number: 6005028Abstract: Alkoxides with polymerizable groups are single source precursors for organic-inorganic hybrid composites possessing good mechanical properties. Additional function groups of the alkoxides provide enhanced adhesion to other surfaces, such as dentin. The selection of specific organic monomers having functional groups that are responsible for enhanced properties of the organic-inorganic hybrid composites is important. Single source precursors containing the desired functional groups are condensed and polymerized into the organic-inorganic hybrid composites with enhanced properties which are particularly useful as dental composites.Type: GrantFiled: August 12, 1996Date of Patent: December 21, 1999Assignee: Southwest Research InstituteInventor: Partha P. Paul
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Patent number: 5977202Abstract: A radiation-curable composition for use as an optical fiber material or coating comprising the combination of the following pre-mixture ingredients:(A) about 5 wt. % to about 95 wt. % of one or more radiation-curable oligomers,(B) about 5 wt. % to about 95 wt. % of one or more monomer diluents,(C) optionally, one or more photoinitiators,(D) about 0.1 wt. % to about 30 wt. % of one or more adhesion promoters represented by:(R.sup.1 --L).sub.4-X --Si(OR.sup.2).sub.Xwherein R.sup.1 is a group comprising an ethylenically unsaturated radiation-curable group; and said three R.sup.2 groups independently of each other are C.sub.1 -C.sub.10 groups; wherein X=1-3; and L is a linking group which comprises one or more alkoxy or branched propoxy groups.Type: GrantFiled: September 22, 1997Date of Patent: November 2, 1999Assignee: DSM N.V.Inventors: Chander P. Chawla, Paul E. Snowwhite, Edward P. Zahora
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Patent number: 5962546Abstract: Compositions containing conductivity enhancers, which are capable of being coated onto a substrate by means of electrostatic assistance. The compositions comprise one or more cationically polymerizable monomer(s), one or more cationic initiator(s), and one or more non-volatile conductivity enhancer(s) having anionic and cationic portions which are soluble in the monomer(s) and which do not interfere with cationic polymerization wherein the anionic portion is a non-coordinating carbon-containing anion. The compositions may further comprise one or more dissociation enhancing agent(s), oligomer(s) or polymer(s), preferably co-reactive, free-radically curable monomer(s), free-radical generating initiator(s), leveling agents, and other additives or adjuvants to impart specific properties to the polymerized composition.Type: GrantFiled: May 1, 1997Date of Patent: October 5, 1999Assignee: 3M Innovative Properties CompanyInventors: Albert I. Everaerts, William M. Lamanna, Albert E. Seaver, George V. D. Tiers
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Patent number: 5962581Abstract: A method of forming a pattern comprising the steps of forming a film of an organosilane compound comprising a polysilane having a repeating unit represented by the following general formula (1) on a substrate, irradiating an actinic radiation onto a predetermined portion of the film of the organosilane compound formed on the substrate, and removing the predetermined portion of the film irradiated by the actinic radiation by dissolving it with an aqueous alkaline developing solution. ##STR1## wherein Ar is a substituted or non-substituted aryl group.Type: GrantFiled: April 26, 1996Date of Patent: October 5, 1999Assignee: Kabushiki Kaisha ToshibaInventors: Shuzi Hayase, Yoshihiko Nakano, Rikako Kani, Mao Ito, Satoshi Mikoshiba, Takeshi Okino, Sawako Fujioka
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Patent number: 5958176Abstract: An electrical part containing an electrical element, a cured silicone resin which has been treated with ultraviolet light, a cured sealing resin which has been integrally bonded to the UV treated silicone resin. The cured silicone resin is prepared from an addition reaction curable silicone composition which is a mixture or reaction mixture of (a) an organosiloxane which has silanol groups and (b) an alkoxysilane which has epoxy groups, and/or (c) an organosiloxane which can be expressed by the average unit formula(R.sup.1 SiO.sub.3/2).sub.a (R.sup.2.sub.2 SiO.sub.2/2).sub.b (R.sup.2.sub.3 SiO.sub.1/2).sub.c (R.sup.3 O.sub.1/2).sub.dwherein R.sup.1 is an epoxy group containing monovalent organic group R.sup.2 is monovalent hydrocarbon group, R.sup.3 is a hydrogen atom or an alkyl group with 1 to 4 carbon atoms, a, b and d are>0 and c is.gtoreq.0.Type: GrantFiled: July 24, 1997Date of Patent: September 28, 1999Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Minoru Isshiki, Katsutoshi Mine, Kimio Yamakawa
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Patent number: 5885751Abstract: An improved method and apparatus for forming a plasma-polymerized methylsilane (PPMS) photo-sensitive resist material includes the steps of pressurizing the chamber to between about 1 to about 2 Torr, heating the substrate to between about 50.degree. C. and about 200.degree. C., and plasma-polymerizing the precursor methylsilane gas to deposit a stable film having high-photosensitivity at high deposition rates.Type: GrantFiled: November 8, 1996Date of Patent: March 23, 1999Assignee: Applied Materials, Inc.Inventors: Timothy Weidman, Dian Sugiarto
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Patent number: 5883147Abstract: A photopolymerizable adhesive consisting of Compound (1) which contains at least one (meth)acryloxy group as a polymerizing group in its molecule, and other structures constructed from the group(s) selected from the group consisting of alkyl group, alkyloxy group, polyalkoxy group, siloxanyl group and the substituted group thereof substituted by fluorine, hydroxy or alkoxy group; Compound (2) selected from (meth)acrylic acids, hydroxyalkyl (meth)acrylates, (meth)acryloxyalkyl succinic acids, trialkoxyvinyl silanes and .gamma.-(meth)acryloxyalkyl trialkoxy silanes; and Compound (3) selected from hydroxyacetophenones, acetophenones, glyoxy esters and camphorquinones, wherein said adhesive comprises 3 to 60 wt % of the compound (2), and 0.1 to 2 wt % of the Compound (3).Type: GrantFiled: June 7, 1995Date of Patent: March 16, 1999Assignee: Japan Institute of Advanced DentistryInventors: Eiichi Masuhara, Shigeo Komiya, Takeyuki Sawamoto, Satoko Maeda
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Patent number: 5877228Abstract: Method for curing UV-curable silicone compositions, characterized by the formation of cured silicone, having a low-tack surface that is harder than the interior, by exposing an ultraviolet-curable silicone composition to ultraviolet radiation at a ratio of the exposure dose for wavelengths of 200 to 280 nm (excluding 280 nm) to the exposure dose for wavelengths of 280 to 400 nm of 0.5 to 10.0.Type: GrantFiled: September 9, 1997Date of Patent: March 2, 1999Assignee: Dow Corning Toray Silicone Co., LTD.Inventors: Katsutoshi Mine, Hiroyoshi Naito, Kimio Yamakawa
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Patent number: 5854302Abstract: A process for forming a partially polymerized DVS resin comprising heating DVS monomer (1,3-bis(2-bicyclo?4.2.0!octa-1,3,5-trien-3-ylethenyl)-1,1,3,3-tetramethyl disiloxane) in a solvent at a concentration of DVS monomer in the solvent such that:(a) the DVS resin, when applied and polymerized in a thin layer on a solid substrate does not craze; and(b) the DVS resin, is rendered photocurable by the addition of at least one photosensitive agent in an amount sufficient to convert the mixture to an organic-insoluble solid upon exposing the mixture to photon radiation and the film retention upon development with a solvent is at least 50 percent. The DVS resin may be used as an interlayer dielectric to fabricate thin film multichip modules.Type: GrantFiled: April 14, 1994Date of Patent: December 29, 1998Assignee: The Dow Chemical CompanyInventors: Pamela S. Foster, Ernest L. Ecker, Edward W. Rutter, Jr., Eric S. Moyer
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Patent number: 5840428Abstract: Novel radiation-curable, organically-modified siloxane resin compositions are prepared from (A) at least one multifunctional acrylate and (B) the reaction product formed from (a) an alkoxy-functional organometallic compound, (b) an alkoxy silane and (c) water. The alkoxy silane (b) includes at least one functional group that renders the alkoxy silane copolymerizable with the multifunctional acrylate (A). The alkoxy-functional organometallic compound (a) and the alkoxy silane (b) undergo co-hydrolysis and co-condensation, which is optionally carried out in the presence of a siloxane polymerization catalyst (d).Type: GrantFiled: August 19, 1996Date of Patent: November 24, 1998Assignee: Dow Corning CorporationInventors: John Donald Blizzard, James Steven Tonge
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Patent number: 5824761Abstract: The present invention relates to radiation curable silicone vinyl ethers and methods for preparing silicone vinyl ethers. More particularly, the present invention relates compositions containing vinyl ether functional silicones and to the preparation and use of silicone vinyl ethers which are curable by addition of photocleavable acids and exposure to ultraviolet or electron beam radiation.Type: GrantFiled: January 16, 1997Date of Patent: October 20, 1998Assignee: Dow Corning CorporationInventors: Valerie Joy Bujanowski, Shedric Oneal Glover, Susan Victoria Perz, Maris Jazeps Ziemelis, Gary Rex Homan, Michael Ward Skinner
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Patent number: 5821278Abstract: Process for the photocatalytic polymerization of a cyclic olefin or at least two different cyclic olefins in the presence of a metal compound as catalyst, which comprises carrying out a photochemical ring-opening metathesis polymerization in the presence of a catalytic amount of at least one heat-stable niobium(V) or tantalum(V) compound which contains at least two methyl groups or two monosubstituted methyl groups bound to the metal, the substituent containing no hydrogen atom in the .alpha.-position.The process can also be carried out by first performing the irradiation and completing the polymerization by heating. The process is suitable, for example, for the preparation of thermoplastic molding materials, coatings and relief images.Type: GrantFiled: May 22, 1997Date of Patent: October 13, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Paul Adriaan Van Der Schaaf, Andreas Hafner, Andreas Muhlebach
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Patent number: 5773489Abstract: Dental inorganic-organic composite fillers are disclosed, which do not scatter a visible light of from 360 to 830 nm in the particles thereof, has a refractive index nD by the D-line of sodium in the range of 1.460.ltoreq.nD.ltoreq.1.600, and which is represented by the following mean empirical formula:aM.sup.1 O.sub.x/2 .multidot.bSiO.sub.2 .multidot.cM.sup.2 O.sub.(4-i-j)/2 R.sup.1.sub.i R.sup.2.sub.jwhereinM.sup.1 is one or more members selected from Ti, Zr, Y, La, Ta, and Al, which is bonded to Si or M2 via the crosslinked oxygen; and x is a valence of M.sup.1 ;M.sup.2 is Si and/or Ti;R.sup.1 is a non-functional group; and R.sup.2 is an organic compound reacted with an organic functional group;i is 0, 1, or 2; and j is 1, 2, or 3, provided that i and j are satisfied with 1.ltoreq.(i+j).ltoreq.3; anda, b, and c are each a molar ratio, provided that a, b, and c are satisfied with 0.ltoreq.a/(a+b).ltoreq.0.65 and 0.02.ltoreq.c/(a+b).ltoreq.3.0.Type: GrantFiled: August 14, 1996Date of Patent: June 30, 1998Assignee: GC CorporationInventor: Hisashi Sato
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Patent number: 5767170Abstract: A single package adhesive for tooth bonding applications which comprises a bulk-water-free solvent-based homogeneous liquid containing:1) An ethylenically unsaturated monomer that possesses a hygroscopic functional group that (a) is capable of chemically reacting with and through the ethylenic bond of the ethylenically unsaturated-functional monomer of 2) below, and (b) provides the capacity for chemical bonding to the surface to which the adhesive is applied.Type: GrantFiled: April 30, 1996Date of Patent: June 16, 1998Assignee: Den-Mat CorporationInventors: Robert L. Ibsen, Alan B. Matthews, William R. Glace
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Patent number: 5759721Abstract: A holographic recording medium comprises an acid generator capable of producing an acid upon exposure to actinic radiation; a binder; and at least one monomer or oligomer capable of undergoing cationic polymerization initiated by the acid produced from the acid generator. This recording medium is not subject to the disadvantages (for example, oxygen sensitivity) associated with radical-polymerized prior art holographic recording media.Type: GrantFiled: November 1, 1996Date of Patent: June 2, 1998Assignee: Polaroid CorporationInventors: Pradeep K. Dhal, Michael G. Horner, Richard T. Ingwall, Eric S. Kolb, Parag G. Mehta, Richard A. Minns, Howard G. Schild, David A. Waldman
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Patent number: 5753721Abstract: A process for photocatalytic polymerisation of a cyclic olefin or of at least two different cyclic olefins in the presence of a metal compound as catalyst, which process comprises carrying out a photochemically induced ring-opening metathesis polymerisation in the presence of a catalytic amount of at least one thermostable molybdenum (VI) or tungsten (VI) compound which contains at least two methyl groups or two monosubstituted methyl groups lacking .beta.-hydrogen atoms in the substituent and which are bonded to the metal atom. The process may be carried out by first irradiating and terminating the polymerisation by heating. The process is suitable for fabricating moulded articles, coatings and relief images.Type: GrantFiled: May 16, 1996Date of Patent: May 19, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Andreas Hafner, Paul A. van der Schaaf, Andreas Muhlebach
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Patent number: 5753720Abstract: The present invention relates to a hardenable organopolysiloxane composition having a viscosity of less than 30,000 Poise at 25.degree. C. comprising (A) 30 to 75 wt % of a silicone resin, (B) 70 to 25 wt % of a mercapto functional organopolysiloxane, (C) 0.1 to 10 parts by weight per 100 parts by weight of (A)+(B) of a mercapto functional organosilane, and (D) 0.01 to 10 parts by weight per 100 parts by weight of (A)+(B) of a condensation catalyst. The present invention also relates to an article of manufacture obtained by applying the hardenable organopolysiloxane composition to a substrate, exposing the composition and substrate to high energy radiation, and then applying a solid support to the coated substrate.Type: GrantFiled: January 31, 1997Date of Patent: May 19, 1998Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Junji Nakanishi, Makoto Yoshitake
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Patent number: 5721286Abstract: A method for curing polymers (11) incorporating a variable frequency microwave furnace system (10) designed to allow modulation of the frequency of the microwaves introduced into a furnace cavity (34). By varying the frequency of the microwave signal, non-uniformities within the cavity (34) are minimized, thereby achieving a more uniform cure throughout the workpiece (36). A directional coupler (24) is provided for detecting the direction of a signal and further directing the signal depending on the detected direction. A first power meter (30) is provided for measuring the power delivered to the microwave furnace (32). A second power meter (26) detects the magnitude of reflected power. The furnace cavity (34) may be adapted to be used to cure materials defining a continuous sheet or which require compressive forces during curing.Type: GrantFiled: September 6, 1995Date of Patent: February 24, 1998Assignee: Lockheed Martin Energy Systems, Inc.Inventors: Robert J. Lauf, Don W. Bible, Felix L. Paulauskas
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Patent number: 5712325Abstract: A method is provided for making a radiation curable silicon containing polyacrylate hardcoat composition based on the use of a dispersion of colloidal silica in a C(3-5) branched aliphatic alcohol such as isopropyl alcohol. A reduction in the use of excess amounts of solvent along with avoiding gelation is achieved while allowing treatment of the colloidal silica dispersion with a alkoxysilylacrylate, followed by the employment of polyfunctional reactive acrylic monomer and stripping of the mixture.Type: GrantFiled: March 13, 1997Date of Patent: January 27, 1998Assignee: General Electric CompanyInventors: Larry Neil Lewis, Gautam Ambalal Patel, Gregory Ronald Gillette, George Fredric Medford
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Patent number: 5702846Abstract: The present invention provides a photosensitive composition for volume hologram recording, comprising the following components:(A) a cationic polymerizable compound and a radical polymerizable compound,(B) a cationic polymerization initiating material, and(C) a radical polymerization initiating material, as an essential component, wherein at least one of the cationic polymerizable compound and radical polymerizable compound of the component contains a siloxane group, and a difference in refractive index between the cationic polymerizable compound and radical polymerizable compound is not less than 0.01.Type: GrantFiled: February 28, 1997Date of Patent: December 30, 1997Assignee: Nippon Paint Co. Ltd.Inventors: Akihiko Sato, Kenzo Mizutani, Masami Kawabata, Iwao Sumiyoshi
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Patent number: 5696179Abstract: The invention provides a silane-oligomer (A) of the following formula:(R.sup.3)--X--(R.sup.1.sub.x)--Y--Si(R.sup.2).sub.3 ( 1)wherein R.sup.3 is a group having a functionality that can be polymerized through actinic radiation, R.sup.1.sub.x is a backbone-oligomer having a molecular weight of more than about 200, R.sup.2 is a hydrolyzable group, and X and Y are coupling groups. The invention also provides a glass coating composition containing the silane-oligomer.Type: GrantFiled: December 8, 1994Date of Patent: December 9, 1997Assignee: DSM, N.V.Inventor: Chander P. Chawla
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Patent number: 5695851Abstract: A coating composition comprising (a) a crosslinking polymerizable compound (a-1) having at least two (meth)acryloyloxy groups in the molecule, or a mixture of this compound (a-1) and a compound (a-2) copolymerizable therewith, (b) finely divided silica having its surfaces modified by a hydrolyzate of a mixture composed of a silane compound (b-1) capable of forming a bond with component (a), and a silane compound (b-2) incapable of forming a bond with component (a), and (c) a high-energy radiation polymerization initiator. This coating composition can form a cured film having high surface hardness and excellent weather resistance, and can be applied in solventless form.Type: GrantFiled: September 28, 1995Date of Patent: December 9, 1997Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Hiroyuki Watanabe, Hitoshi Ige, Akira Yanagase
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Patent number: 5691396Abstract: The invention provides a novel polysiloxane compound, typically polyhydroxybenzylsilsesquioxane, having some hydroxyl groups replaced by acetal groups and optionally acid labile groups. The polysiloxane compound is useful as an alkali soluble polymer for positive resist material.Type: GrantFiled: September 24, 1996Date of Patent: November 25, 1997Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Katsuya Takemura, Junji Tsuchiya, Osamu Watanabe, Toshinobu Ishihara
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Patent number: 5681870Abstract: Novel class of organoboron thermosetting polymer and ceramics that are fod from an organoboron polymer having a backbone with a repeating of at least one alkynyl group, at least one silyl group, at least one boranyl group, optionally at least one siloxyl group, and optionally an aryldisilyl group. The boron containing units in and the silicon containing units can be arranged in either random occurrences between each other or in the form of interdispersed block-type structures of each unit. The thermosetting polymers are useful as high temperature, oxidatively stable thermosetting plastics and for microelectronic applications.Type: GrantFiled: July 26, 1996Date of Patent: October 28, 1997Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, Raj A. Sundar
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Patent number: 5672672Abstract: A polymeric optical material which is a mixture of a polysiloxane and at least one compound selected from the group consisting of polyisocyanate, silane, alkoxide and chelate, and an optical waveguide fabricated from the polymeric optical material having high thermal stability and low propagation loss over wide range. The polysiloxane may have, for example, a repeating unit of following formula (I): ##STR1## wherein each of R.sub.1 and R.sub.2 is independently an alkyl, deuterated alkyl or halogenated alkyl group, or a phenyl, deuterated phenyl or halogenated phenyl group. The optical waveguide includes a substrate, a clad layer provided on the substrate and a core layer surrounded by the clad layer. The clad layer is composed of a lower clad layer which is overlaid onto the substrate and an upper clad layer which surrounds the core layer.Type: GrantFiled: October 26, 1995Date of Patent: September 30, 1997Assignee: Nippon Telegraph and Telephone CorporationInventors: Michiyuki Amano, Toshio Watanabe, Mitsuo Usui, Shungo Sugawara, Shoichi Hayashida, Saburo Imamura
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Patent number: 5663211Abstract: An ultraviolet curing resin for an optical disk according to the present invention which includes: a multiacrylate-functional monomer selected from the group consisting of multiacrylate-functional monomers and multimethacrylate-functional monomers and mixtures of the foregoing monomers; a difunctional monomer selected from the group consisting of diacrylate-functional monomers, dimethacrylate-functional monomers and mixtures of the foregoing monomers; a diluent; an adhesion promoter; and a photopolymerization initiator. The ultraviolet curing resin may also include a surface tension adjusting agent.Type: GrantFiled: May 13, 1996Date of Patent: September 2, 1997Assignee: Sony Chemicals CorporationInventors: Hiraku Kominami, Harumi Saotome
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Patent number: 5658966Abstract: A method of coupling optical parts including bonding the optical coupling faces of two optical waveguides by butting and fusing them. Also, a method for forming a refractive-index distribution having the focusing lens effect by setting the interval between the optical coupling faces of two optical parts to 0.1 mm or more, feeding a refractive-index imaging material also serving as an adhesive into the gap between the faces, and applying light to the refractive-index imaging material from the optical coupling face of at least one of the optical parts.Type: GrantFiled: June 5, 1995Date of Patent: August 19, 1997Assignee: Fujitsu LimitedInventors: Koji Tsukamoto, Takeshi Ishitsuka, Tetsuzo Yoshimura, Katsusada Motoyoshi, Yasuhiro Yoneda
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Patent number: 5652280Abstract: A method for the anionic photoinitiation of polymerization or crosslinking of a substrate by irradiating a mixture of a substrate and a photoinitiator, where the photoinitiator is an inorganic transition metal complex which releases on irradiation a polymerization initiating substance consisting essentially of an anionically charged nucleophile that initiates the polymerization or crosslinking reaction, under conditions that allow the anion to initiate polymerization.Type: GrantFiled: May 17, 1994Date of Patent: July 29, 1997Assignee: University of Georgia Research Foundation, Inc.Inventor: Charles R. Kutal
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Patent number: 5650453Abstract: Blends of epoxysilicone polymers and vinyl ether monomers or oligomers and an effective amount of a suitable iodonium photocatalyst provide an ultraviolet curable low viscosity silicone coating composition.Type: GrantFiled: April 28, 1995Date of Patent: July 22, 1997Assignee: General Electric CompanyInventors: Richard P. Eckberg, Michael J. O'Brien
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Patent number: 5639802Abstract: The present invention relates to a novel class of compounds which absorb light at wavelengths greater than 350 nm and are useful as fluorescers or as photoinitiators. The present invention provides compounds of the formulas (I) and (II) and their equivalents (the nomenclature of the compounds used herein is based on the numbering of positions as shown in formula (I)): ##STR1## where: when W is .dbd.O, W.sup.1 is hydrogen or --OR.sup.9 and when W is .dbd.NR.sup.+.sub.2, W is hydrogen or --NR.sub.2, A is hydrogen, alkenyl, alkyl or an election withdrawing group, and the remaining groups are as defined in the disclosure.Type: GrantFiled: November 23, 1993Date of Patent: June 17, 1997Assignee: Spectra Group Limited, Inc.Inventors: Douglas C. Neckers, Yubai Bi
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Patent number: 5637380Abstract: A composition for a protective film, which comprises the following components (A), (B), (C) and (D), wherein the proportions of the main components (A) and (B) are substantially from 5 to 60 wt % of (A) and from 35 to 90 wt % of (B), based on the total amount of the composition: (A) a photopolymerizable polyfunctional (meth)acrylate monomer and/or oligomer; (B) an oligomer or polymer of a non-acrylic epoxide; (C) a photopolymerization initiator; and (D) an epoxy-curing agent.Type: GrantFiled: May 12, 1995Date of Patent: June 10, 1997Assignee: AG Technology Co., Ltd.Inventors: Atsuko Kaneko, Shinya Tahara
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Patent number: 5626964Abstract: Radiation-curable silicone resin abrasion-resistant coatings are produced from the hydrolysis/condensation of tetra-alkoxysilanes, the condensation thereof with amine alcohol and combination with multifunctional acrylate monomers and oligomers. The cured compositions of the invention exhibit excellent abrasion resistance and offer low cost manufacture.Type: GrantFiled: October 24, 1995Date of Patent: May 6, 1997Assignee: Dow Corning CorporationInventors: John D. Blizzard, Arne R. Jarnholm, James S. Tonge
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Patent number: 5616629Abstract: A radiation-curable release composition is disclosed which comprises:(A) an organopolysiloxane represented by the formulaRSi(CH.sub.3).sub.2 --O--(Si(CH.sub.3).sub.2 O).sub.n (Si(CH.sub.3)(R)O).sub.m Si(CH.sub.3).sub.2 R (I)wherein in Formula (I), each R is --R.sup.1 --O(O)C--C(R.sup.2).dbd.CH.sub.2, --R.sup.1 --O--C(R.sup.2).dbd.CH.sub.2 or is derived from an organic molecule containing both ethylenic unsaturation and epoxide functionality; R.sup.1 is a hydrocarbylene group; each R.sup.2 is independently hydrogen or a methyl or ethyl group; m is a number from about 1 to about 15; and n is a number from about 50 to about 300; and(B) an organosiloxane copolymer represented by the formula(R.sub.3 SiO).sub.x (SiO.sub.4/2).sub.y (II)wherein in Formula (II), each R is independently a hydrocarbon group or a group represented by the formula--O(O)C--C(R*).dbd.CH.sub.2wherein R* is hydrogen or a methyl or ethyl group; x is a number from about 0.Type: GrantFiled: February 27, 1995Date of Patent: April 1, 1997Assignee: Avery Dennison CorporationInventors: Thanh V. Nguyen, John Allen, Qun Yu
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Patent number: 5607774Abstract: The present invention describes a method for the manufacture of a phosphor intensifying screen which eliminates the use of solvents and high processing temperatures. The method comprises blending a phosphor in a hardenable system (i.e., that is, as defined herein, a polymerizable or curable system) comprising phosphor in a radiation curable binder composition, coating the phosphor in a radiation curable binder composition onto a substrate, and polymerizing (i.e., hardening) the system by exposure to actinic radiation. The radiation curable binder composition comprises an organopolysiloxane or a mixture of organgpolysiloxanes.Type: GrantFiled: May 15, 1995Date of Patent: March 4, 1997Assignee: Imation Corp.Inventors: John C. Dahlquist, Mieczyslaw H. Mazurek
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Patent number: 5595820Abstract: This invention provides an improved coating composition for glass substrates that comprises a poly(siloxane). The introduction of a poly(siloxane) 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 poly(siloxane) into a polymeric coating composition also improves the interlayer adhesion when more than one coating is applied to a glass substrate. This invention also provides an improved coated glass substrate having a decreased rate of deterioration due to moisture, improved adhesion between the glass substrate and the coating composition and between the various coatings, wherein the coating composition comprises a poly(siloxane).Type: GrantFiled: June 7, 1995Date of Patent: January 21, 1997Assignee: DSM Desotech, Inc.Inventor: David M. Szum
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Patent number: 5591783Abstract: An ultraviolet-curable silicone composition involving:(A) 100 parts by weight of a polyorganosiloxane comprising structural units represented by the general formula R.sup.1.sub.m R.sup.2.sub.n SiO.sub.(4-m-n)/2 ;(B) from 0.1 to 10 parts by weight of a polyorganosiloxane which is blocked by (OH)R.sup.3.sub.2 Si.sub. 1/2 at both ends or (b) an alcohol-modified polyorganosiloxane containing two or more alcoholic OH groups per molecule; and(C) a catalytically effective amount of an onium salt as a photoinitiator.Type: GrantFiled: February 9, 1995Date of Patent: January 7, 1997Assignee: Toshiba Silicone Co., Ltd.Inventors: Keiji Kobayashi, Roy M. Griswold
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Patent number: 5581646Abstract: A method of coupling optical parts including bonding the optical coupling faces of two optical waveguides by butting and fusing them. Also, a method for forming a refractive-index distribution having the focusing lens effect by setting the interval between the optical coupling faces of two optical parts to 0.1 mm or more, feeding a refractive-index imaging material also serving as an adhesive into the gap between the faces, and applying light to the refractive-index imaging material from the optical coupling face of at least one of the optical parts.Type: GrantFiled: July 27, 1995Date of Patent: December 3, 1996Assignee: Fujitsu LimitedInventors: Koji Tsukamoto, Takeshi Ishitsuka, Tetsuzo Yoshimura, Katsusada Motoyoshi, Yasuhiro Yoneda
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Patent number: 5576356Abstract: The invention provides a radiation curable release coating composition comprising:(a) about 1 to about 50 percent by weight of a cationically reactive polydiorganosiloxane liquid rubber having the following formula: ##STR1## wherein R are monovalent moieties which can be the same or different selected from the group consisting of alkyl, substituted alkyl, aryl, and substituted aryl wherein at least about 50% of the total number of silicon atoms have two methyl groups bonded thereto;E is an organic monovalent functional group comprising from about 1 to about 20 carbon atoms having at least one cationically co-reactive functional group;a and b both represent integers, wherein the sum of a plus b is an integer of about 10 to about 1200;b has a value ranging from about 0 to about 0.Type: GrantFiled: November 2, 1994Date of Patent: November 19, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Charles M. Leir, William R. Berggren, William R. Bronn, David J. Kinning, Olester Benson, Jr.
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Patent number: 5563181Abstract: This invention relates to a new class of novel inorganic-organic hybrid thermoset polymers that are formed from linear inorganic-organic hybrid polymers of varying molecular weight. These new high temperature oxidatively stable thermosetting polymers are formed from linear polymeric materials having repeat units that contain at least one alkynyl group for cross-linking purposes and at least one siloxanyl group. These novel thermoset polymers contain an unsaturated cross-linked hydrocarbon moiety.Type: GrantFiled: May 9, 1995Date of Patent: October 8, 1996Assignee: The United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, David Y. Son
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Patent number: 5547808Abstract: The present invention provides a composition having sensitivity to light or radiation. The composition comprises a polymer having a siloxane-bond structure which undergoes polymerization reaction when irridiated with light or radiation, and a sensitizing agent. The present invention also provides a process for forming a pattern, preparing a photomask and a semiconductor device by using the composition of the present invention.Type: GrantFiled: September 9, 1994Date of Patent: August 20, 1996Assignee: Matsushita Electronics CorporationInventor: Hisashi Watanabe
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Patent number: 5543369Abstract: A block copolymer is prepared by reacting an aluminum-nitrogen polymer and a silazane polymer at a temperature not greater than 400.degree. C. Block copolymers containing alkenyl or alkynyl groups can be crosslinked by supplying energy to generate free radicals. An AlN/SiC-containing ceramic is formed by pyrolyzing the crosslinked block copolymer in a nonoxidizing atmosphere.Type: GrantFiled: January 15, 1993Date of Patent: August 6, 1996Inventor: James A. Jensen
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Patent number: 5539014Abstract: This invention relates to vinyl ether-based coatings for which properties such as color stability, thermal stability, mechanical stability, hydrolytic stability, and resistance to embrittlement may be maintained and properties hydrogen generation and blocking are minimized.Type: GrantFiled: August 19, 1994Date of Patent: July 23, 1996Assignee: AlliedSignal Inc.Inventors: Raymond J. Swedo, George D. Green, James R. Snyder
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Patent number: 5496871Abstract: Novel fumarate- and fumaramide-containing monomers are disclosed which are especially useful in the preparation of biocompatible devices, especially contact lenses.Type: GrantFiled: March 1, 1995Date of Patent: March 5, 1996Assignee: Bausch & Lomb IncorporatedInventors: Yu-Chin Lai, Ronald E. Bambury