Composition Sensitive To Or Resistant To Radioactive Material Or Cathode Rays (e.g., Electron Bombardment, Etc.) Or Process Of Preparing Patents (Class 523/136)
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Patent number: 10758471Abstract: Copolymers derived from hydrophobic monomers of formula (1), and hydrophilic monomers of formulas (2) and (3), are provided The copolymers are useful as gelling agents for oils used in cosmetics and cosmetic emulsions.Type: GrantFiled: October 27, 2015Date of Patent: September 1, 2020Assignee: SHISEIDO COMPANY, LTD.Inventors: Makoto Uyama, Kazuyuki Miyazawa, Takumi Watanabe, Mineo Abe, Masato Matsumura
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Patent number: 10676397Abstract: A method for soil remediation by molecular binding for producing beneficial use determined polymer concrete product that removes hazardous pollutants from a quantity of contaminated soil. Hazardous pollutants are identified though chemical analysis in order to select at least corresponding polymer and at least one corresponding binder for each hazardous pollutant present in the contaminated soil. The at least one polymer chemically bonds with the hazardous pollutant in order to neutralize the hazardous pollutant within the contaminated soil to form a polymer concrete product. The polymer concrete product is then used as a concrete substitute for construction applications.Type: GrantFiled: December 22, 2016Date of Patent: June 9, 2020Inventors: Glenn Joseph Dominguez, Peter Pirozzi
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Patent number: 10607742Abstract: The invention consists of radiation shielding materials for shielding in the most structurally robust combination against galactic cosmic radiation (GCR), neutrons, and solar energetic particles (SEP). Materials for vehicles, space structures, habitats, landers, rovers, and spacesuits must possess functional characteristics of radiation shielding, thermal protection, pressure resistance, and mechanical durability. The materials are tailored to offer the greatest shielding against GCR, neutrons, and SEP in the most structurally robust combination, also capable of shielding against micrometeoriod impact. The boron nitride nanotube (BNNT) is composed entirely of low Z atoms (boron and nitrogen).Type: GrantFiled: November 19, 2012Date of Patent: March 31, 2020Assignees: National Institute of Aerospace Associates, United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Sheila A. Thibeault, Catharine C. Fay, Godfrey Sauti, Jin Ho Kang, Cheol Park
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Patent number: 8440108Abstract: A composition of matter and method of forming a radiation shielding member at ambient temperatures in which the composition of matter includes a ‘cold-fired’ chemically bonded oxide-phosphate ceramic cement matrix; with one or more suitably prepared and distributed radiation shielding materials dispersed in the ‘cold-fired’ chemically bonded oxide-phosphate ceramic cement matrix.Type: GrantFiled: June 4, 2008Date of Patent: May 14, 2013Assignee: Co-Operations, Inc.Inventors: Judd Hamilton, Vernon D. Hamilton
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Patent number: 8426488Abstract: An easily removable dental curable composition which prevents the fall or leakage of a temporary prosthetic appliance or a root canal filling material which is easily removed by bonding and adhering it to tooth, shows such high flowability that its operation is easy, has a long working time and excellent X-ray contrast properties and sealability and can be easily removed as required, and a filling kit. The dental curable composition comprises (A) a polymerizable monomer mixture containing a polymerizable monomer having an acid group in the molecule and (B) a polymerization initiator, wherein the component (A) contains (A?) a long-chain polymerizable monomer having a structure with a chain length of 17 or more atoms and/or the composition further comprises (D1) a soft resin material.Type: GrantFiled: April 24, 2009Date of Patent: April 23, 2013Assignee: Sun Medical Co., Ltd.Inventors: Tatsuya Ori, Akari Yamamoto, Masami Arata, Maho Yoshikawa
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Patent number: 8022116Abstract: Lightweight and rigid, leaded or lead-free integral radiation shielding structural compositions comprising two or more radiation attenuating elements or compounds thereof, selected for having compatible radiation attenuating characteristics, dispersed in a thermoplastic or thermoset resin. The radiation shielding structural compositions of the present invention can be used to functionally and structurally replace lead-lined structures in medical and industrial x-ray systems. The radiation shielding structural compositions of the present invention can also be formulated to minimize the density of the resulting structure.Type: GrantFiled: July 14, 2004Date of Patent: September 20, 2011Assignee: Advanced Shielding Components, LLCInventors: Daniel D. Coppens, Martin John Lilley, John B. Jones
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Publication number: 20100258751Abstract: A concrete material is disclosed according to one embodiment. The concrete material may include a mixture of cement, granular rubber and boron in various forms and ratios. The boron may include boron carbide. The rubber may be recovered rubber from used automobile and/or truck tires. Various other components may be added to the cement, such as, for example, binders, water, sand, rock, or other aggregates. Embodiments described herein may be used in radiation shielding applications, such as, for example, nuclear waste facilities, nuclear storage and/or transportation casks, nuclear power plants, medical waste facilities, illicit drug detection facilities, linear accelerator facilities, etc.Type: ApplicationFiled: June 20, 2008Publication date: October 14, 2010Applicant: COLORADO SEMINARY, WHICH OWNS AND OPERATES THE UNIVERSITY OF DENVERInventor: Zeev Shayer
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Publication number: 20100124663Abstract: A resin composition with no substantial halogen element content contains a tungsten powder, a polyester elastomer, silica, a polysiloxane compound, and melamine cyanurate. Relative to 100% in weight of the polyester elastomer, the total content of silica and the polysiloxane compound is 22% or more in weight, the content of melamine cyanurate is 17% or more in weight, and the total content of silica, the polysiloxane compound, and melamine cyanurate is 45% to 53% in weight. The oxygen index of the resin composition is 26 or more. The number of times of circumferentially bending a test piece at 90 degrees around a 10 mm-diameter column in a repetitive bending test using the test piece made of the resin composition having a length of 50 mm, a width of 100 mm, and a thickness of 2.25 mm is 1000 or more.Type: ApplicationFiled: November 20, 2008Publication date: May 20, 2010Applicants: Alpha Technical Research Co. Ltd., MATE Co., Ltd.Inventors: Tatsuo Furusawa, Koichi Furusawa, Noriyuki Ishihara, Yoshihiro Hirano, Tsuneyasu Ariyoshi, Teruhisa Kanadani, Daisuke Matsuda
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Publication number: 20100084181Abstract: A radiation-proof sheath material includes a polymer material containing molecular chains of ethylene units as a main component in which side chain groups are randomly distributed and cross-linked, an antioxidant, a processing aid, and a flame retardant. The polymer material includes chlorinated polyethylene containing chloro groups in the side chain groups.Type: ApplicationFiled: April 30, 2009Publication date: April 8, 2010Inventors: Masami SORIMACHI, Yoshiaki Nakamura, Hitoshi Kimura, Shigeki Matsuyama
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Patent number: 7524438Abstract: The invention concerns a neutron shielding material for maintaining sub-criticality based on unsaturated polymer: Said material comprises an unsaturated polyester resin, at least an inorganic boron compound, and at least a hydrogenated inorganic compound, in amounts such that the boron concentration is 4.1021 to 25.1021 atoms per cm3 and the hydrogen concentration is 3.1022 to 5.5.1022 atoms per cm3.Type: GrantFiled: September 27, 2002Date of Patent: April 28, 2009Assignee: Cogema LogisticsInventors: Pierre Malalel, Martine Valiere
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Patent number: 7488963Abstract: A thin, light-weight, flexible sheet product useful for the manufacture of radiation attenuation garments. The sheet product is a polymeric material and includes a heavy loading of high molecular weight metal particles. The sheet product is formed from a polymer latex dispersion into which a high molecular weight metal particles are dispersed, where the latex retains a sufficiently low viscosity to be pourable and allow casting of the sheet product.Type: GrantFiled: March 19, 2007Date of Patent: February 10, 2009Assignee: Bar-Ray Products, Inc.Inventors: Arthur P. Lagace, Ronald E Blocher
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Publication number: 20080306184Abstract: Polymer/carbon nanotube composites including single-wall or multi-wall carbon nanotubes incorporated into the matrix of a polymer are provided. These composites can be used in environments exposed to galactic cosmic radiation. Accordingly, the composites are useful in deep space applications like space vehicles, space stations, personal equipment as well as applications in the biomedical arts and atom splitting research. The composites can be modified with organic dyes containing at least one phenyl ring and the resulting doped composite is useful as a radiation detector. The preferred polymer is poly(4-methyl-1-pentene). At low nanotube concentrations (i.e., about 0.5 wt % or less), the composites exhibit transparent optical qualities. At higher nanotube concentrations (i.e., about 0.6 wt % or more), the composites are non-transparent.Type: ApplicationFiled: December 1, 2006Publication date: December 11, 2008Inventors: Julie P. Harmon, LaNetra M. Clayton
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Patent number: 7399431Abstract: The invention relates to a material for neutron shielding and for maintaining sub-criticality, and a process for preparation of this material and applications of the said material. The material comprises a matrix based on a vinylester resin, at least one polyamide and an inorganic filler capable of slowing and absorbing neutrons. Applications: manufacturing of neutron shields in packagings for transport, interim storage and/or ultimate storage of radioactive materials, particularly packagings for new nuclear fuels.Type: GrantFiled: October 15, 2003Date of Patent: July 15, 2008Assignee: Cogema LogisticsInventors: Pascale Abadie, Eric Malandin, Martine Valiere
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Patent number: 7374718Abstract: A composition comprising an aromatic carbonate polymer and an amount of at least one solid cyclic aliphatic alcohol stabilizing compound sufficient to inhibit yellowing of the composition upon exposure to a sterilizing radiation, wherein said stabilizing compound is selected from the group consisting of 2,2,4,4-tetramethylcyclobutane-1,3-diol, 1,4-cyclohexanediol, and wherein said stabilizing compound is present in said composition in an amount of at least about 0.2 parts by weight per 100 parts by weight of said aromatic carbonate polymers.Type: GrantFiled: October 6, 2005Date of Patent: May 20, 2008Assignee: General Electric CompanyInventors: Dibakar Dhara, Katherine C. Glasgow, Vikram Kumar
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Patent number: 7193230Abstract: A thin, light-weight, flexible sheet product useful for the manufacture of radiation attenuation garments. The sheet product is a polymeric material and includes a heavy loading of high molecular weight metal particles. The sheet product is formed from a polymer latex dispersion into which a high molecular weight metal particles are dispersed, where the latex retains a sufficiently low viscosity to be pourable and allow casting of the sheet product.Type: GrantFiled: December 3, 2004Date of Patent: March 20, 2007Assignee: Bar-Ray Products, Inc.Inventors: Arthur P. Lagace, Ronald E. Blocher
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Patent number: 7078447Abstract: Embodiments of ionizing radiation stable polyarylestercarbonate resin compositions, methods for making the ionizing radiation stable compositions, and articles and medical devices made from these ionizing radiation stable compositions are disclosed. For examples the specification discloses a composition which comprises a block copolyarylestercarbonate and a ionizing radiation stablizing additive. The said copolyarylestercarbonate comprises an organic carbonate block and at least one arylate block. The arylate block comprises arylate structural units derived from at least one 1,3-dihydroxybenzene moiety and at least one aromatic dicarboxylic acid moiety. The arylate block has a degree of polymerization of 1 or greater.Type: GrantFiled: November 21, 2003Date of Patent: July 18, 2006Assignee: General Electric CompanyInventors: Katherine Glasgow, Adam Zerda
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Patent number: 7030172Abstract: An electromagnetic wave-absorbing composition is obtained by dispersing in a base polymer a magnetic powder coated with electrically insulating inorganic fines and optionally, a heat conductive powder. The composition has a high breakdown voltage, and can be applied to any adequate site within electronic equipment without a need to pay substantial attention to short-circuits.Type: GrantFiled: May 23, 2003Date of Patent: April 18, 2006Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Ikuo Sakurai
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Patent number: 7025908Abstract: The optical filter of the present invention is provided with a near infrared light absorption layer that contains a component composed of copper ions and a phosphoric ester compound expressed by the following Formula (10), in which the phosphorus atom content in the near infrared light absorption layer is 0.4 to 1.3 mol per mole of copper ions, and the copper ion content in the near infrared light absorption layer is 2 to 60 wt %.Type: GrantFiled: September 6, 2000Date of Patent: April 11, 2006Assignee: Kureha CorporationInventors: Naoki Hayashi, Hiroki Katono, Masuhiro Syouji, Tomoyoshi Koizumi, Katsuichi Machida
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Patent number: 7012111Abstract: A high specific-gravity EPDM composition consisting of a mixture of EPDM containing diene at less than 4.5 wt % and ethylene at not less than 58 wt % nor more than 80 wt % and having a Mooney viscosity ML1+4 not less than 50 nor more than 170 at 125° C. and a powdery material, containing powder whose specific gravity is not less than 12 as a main component thereof, added to the EPDM at not less than 80 wt % nor more than 97.5 wt % of a whole amount of the high specific-gravity EPDM composition.Type: GrantFiled: June 17, 2002Date of Patent: March 14, 2006Assignees: Sumitomo Rubber Industries, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Yumi Kanemitsu, Toshiaki Sakaki, Tetsuo Mizoguchi, Toshihiko Takiguchi, Hitoshi Takii, Toshinori Sakamaki, Noboru Uenishi, Shinji Kikuhara
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Patent number: 6884994Abstract: The present invention provides scintillation material having good stability at continuous operating temperatures of at least 175° C. The scintillation material includes a cross linked copolymer with improved aromatic character that form a host plastic having properties of a thermoset polymer. The host plastic contains a primary fluorescent agent and a wavelength shifter. Preferably, the copolymer is comprised of a styrene derivative such as, for example, p-t-butylstyrene, and a higher melting point compound such as, for example, 4-vinylbiphenyl. In accordance with one aspect of the present invention, the scintillation material possesses properties of: good mechanical properties at high temperature (e.g., a Tg of about 180° C.); excellent light output (e.g., energy transfer efficiency); high hydrogen content for fast neutron detection; good optical transparency; and stable operation at temperature.Type: GrantFiled: September 19, 2002Date of Patent: April 26, 2005Assignee: Schlumberger Technology CorporationInventors: John J. Simonetti, Wolfgang Peter Ziegler, Edward F. Durner, Jr., Catherine Danielle Marie Busser
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Publication number: 20040127599Abstract: The invention relates to a material for neutron shielding and for maintaining sub-criticality, and a process for preparation of this material and applications of the said material.Type: ApplicationFiled: October 15, 2003Publication date: July 1, 2004Inventors: Pascale Abadie, Eric Malandin, Martine Valiere
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Patent number: 6734224Abstract: Disclosed is a heat radiation shield coating composition containing a black pigment which exhibits a reflectance of not below 8.0% relative to a solar radiation in the 780-2,100 nm wavelength region. The black pigment preferably exhibits a reflectance of not higher than 15% relative to a radiation at any wavelength in the 400-700 nm visible region.Type: GrantFiled: February 21, 2001Date of Patent: May 11, 2004Assignee: Nippon Paint Co., Ltd.Inventors: Ryoji Ishihara, Keita Mizutani, Nobuto Fujii
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Patent number: 6727294Abstract: A thermoplastic resin composition comprising: a transparent aromatic thermoplastic resin (a) and a copolyester resin (b) comprising at least two kinds of dicarboxylic acid moieties and one kind of diol moiety, 1 to 50 mol % of the dicarboxylic acid moieties being a naphthalenedicarboxylic acid moiety, the ratio of (a) to the combined amount of (a) and (b) being 55 to 99.99% by weight, and the ratio of (b) being 0.01 to 45% by weight.Type: GrantFiled: January 24, 2001Date of Patent: April 27, 2004Assignee: Mitsubishi Engineering-Plastics CorporationInventors: Satoshi Kanayama, Tatsuhiko Hatakeyama, Shinya Miya, Kenichi Narita, Ken Honma
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Publication number: 20040056186Abstract: The present invention provides scintillation material having good stability at continuous operating temperatures of at least 175° C. The scintillation material includes a cross linked copolymer with improved aromatic character that form a host plastic having properties of a thermoset polymer. The host plastic contains a primary fluorescent agent and a wavelength shifter. Preferably, the copolymer is comprised of a styrene derivative such as, for example, p-t-butylstyrene, and a higher melting point compound such as, for example, 4-vinylbiphenyl. In accordance with one aspect of the present invention, the scintillation material possesses properties of: good mechanical properties at high temperature (e.g., a Tg of about 180° C.); excellent light output (e.g., energy transfer efficiency); high hydrogen content for fast neutron detection; good optical transparency; and stable operation at temperature.Type: ApplicationFiled: September 19, 2002Publication date: March 25, 2004Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: John J. Simonetti, Wolfgang Peter Ziegler, Edward F. Durner, Catherine Danielle Marie Busser
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Publication number: 20040029998Abstract: It is an object of the invention to overcome the problems of the related art and provide a radiation shielding material with no use of lead, which can readily be cut with scissors and the like and can be recycled by again melt molding cut pieces generated from melt molding and cutting with scissors.Type: ApplicationFiled: May 19, 2003Publication date: February 12, 2004Inventors: Hitoshi Tomita, Tetsuo Nishikawa, Kazuo Haruta
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Patent number: 6689827Abstract: The invention relates to transparent, impact-resistant thermoplastic molding materials containing A) a matrix consisting of at least two different mixture components, B) an impact-resistance modifier, C) an additive, essentially consisting of c1) at least one 2,6-disubstituted phenol, and c21) at least one organic phosphite of general formula (I) P(OR1)n(OAr)3−n, c22 at least one organic phosphite of general formula (IIa) and/or (IIb), or c23) a mixture of compounds in accordance with c21) and c22).Type: GrantFiled: September 14, 1999Date of Patent: February 10, 2004Assignee: BASF AktiengesellschaftInventors: Christian Schade, Rainer Neumann, Claudia Messinger, Klaus Benker, Armin Kurps
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Publication number: 20030099582Abstract: A dosimeter comprising: a support; at least one first region disposed on said support, the region containing amino acid and a binder; and at least one second region disposed on said support; wherein the first region is capable of measuring an absorbed dose of ionizing radiation and the second region bears an identification mark.Type: ApplicationFiled: November 27, 2001Publication date: May 29, 2003Inventors: David J. Steklenski, Michael T. Wolf, Wayne K. Shaffer, James H. Griggs
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Patent number: 6485657Abstract: A new gamma-ray stabilizer comprising a combination of 100 parts by weight of a benzyl compound (A) having a specific chemical structure and 0.01 to 10 parts by weight of a pentaerythritol phosphorous ester (B) having a spirocyclic structure. Said stabilizer is preferably blended in such a manner that said (A) is contained in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of a thermoplastic polymer (polycarbonate or the like), and said (B) is contained in an amount of 0.01 to 1 part by weight based on 100 parts by weight of said (A).Type: GrantFiled: February 11, 2000Date of Patent: November 26, 2002Assignee: Teijin, LimitedInventors: Wataru Funakoshi, Tetsuo Kanda, Fumitaka Kondo, Katsushi Sasaki
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Patent number: 6410613Abstract: Disclosed herein are a novel phosphate compound by which a copper ion can be dispersed in a high proportion in a synthetic resin, thereby providing excellent visible ray-transmitting property and performance that near infrared rays are absorbed with high efficiency, a preparation process thereof, a phosphate copper compound obtained from the phosphate compound and a preparation process thereof, and a near infrared ray-absorbing acrylic resin composition which has both excellent visible ray-transmitting property and near infrared rays absorption capability.Type: GrantFiled: February 17, 2000Date of Patent: June 25, 2002Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Yasuhiro Ohnishi, Hiroki Katono
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Patent number: 6359028Abstract: A polycarbonate resin composition according to the present invention is suited to be used for medical supplies or appliances and shows a very low yellow discoloration when exposed to an ionizing radiation for sterilization. The polycarbonate resin composition comprises 100 parts by weight of a polycarbonate resin; 0.01 to 5 parts by weight of an aromatic compound containing oxy group or carbonyl group; and 0.01 to 5 parts by weight of at least one compound selected from the group consisting of: (A) a compound containing cyclic acetal group; (B) a sulfone compound; (C) a sulfoxide compound; (D) polyalkylene glycol, an ether of polyalkylene glycol or an ester of polyalkylene glycol; (E) a compound containing sulfonate group; and (F) an aromatic hydrocarbon-aldehyde resin.Type: GrantFiled: August 26, 1999Date of Patent: March 19, 2002Assignee: Mitsubishi Engineering-Plastics CorporationInventors: Shinya Miya, Satoshi Kanayama, Ken Shimomai
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Patent number: 6344507Abstract: The surface resistivity of polycarbonate resin is reduced and thus the antistatic properties improved by the inclusion of esters of branched fatty acids and polyhydroxylic compounds having at least one and desirably at least two free hydroxyl groups e.g. glycerol mono-iso-stearate. The reduction in surface resistivity can be acheived without a significant increase in haze or yellowness.Type: GrantFiled: June 3, 1999Date of Patent: February 5, 2002Assignee: Imperial Chemical Industries PLCInventor: Franky Wylin
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Publication number: 20010007881Abstract: Novel modifying agents contain a sharply-melting crystalline polymer ingredient, preferably a side chain crystalline (SCC) ingredient, and an active chemical ingredient. Such modifying agents, especially when in the form of particles, can be placed in contact with a matrix, will not modify the matrix below the crystalline melting point Tp, but will rapidly modify the matrix above Tp. The active chemical ingredient can react with the matrix, catalyze a reaction of the matrix, or inhibit a reaction of the matrix. Particularly useful compositions are polymer precursors which are storage-stable at low temperatures but which are rapidly converted to crosslinked resins when heated to temperatures above Tp, optionally in the presence of light.Type: ApplicationFiled: December 8, 2000Publication date: July 12, 2001Inventors: Steven P. Bitler, Ray F. Stewart, Mark A. Wanthal, David A. Kamp, Paul A. Meyers, David D. Taft, Donald A. Schultz
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Patent number: 6232383Abstract: The present invention is a shielding material that resists both nuclear radiation and high temperatures and is especially suited to encasing radioactive waster materials to immobilize them. The material is a mixture comprised of two or more organic polymers in which included fillers are cross-linked within the phenylic side chains of the polymers and copolymers. Other fillers provide radioactive shielding and may be merely included within the cross-linked matrix. The material contains a tough matrix with embedded particles of radiation shielding substances and thermoconductive materials with an overall ceramic-like or ceramometallic properties. The material is thermosetting and can present an extremely hard material—e.g., 20,000 p.s.i. shear strength. The material is comprised of a mixture of vulcanized rubber and/or rubber-like polymers, various radiation shielding inclusions, polyimide resin and phenolformaldehyde resin.Type: GrantFiled: November 6, 1998Date of Patent: May 15, 2001Assignee: Nurescell, Inc.Inventor: Adrian Joseph
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Patent number: 6204301Abstract: Fibers as a reinforcing substrate are impregnated with the particles of polytetrafluoroethylene and pressed into a shape at the melting point of polytetrafluoroethylene. Alternatively, the reinforcing substrate sandwiched between polytetrafluoroethylene sheets is pressed into a shape at the melting point of polytetrafluoroethylene. In either case, the shaped article is then exposed to an ionizing radiation in an oxygen-free atmosphere at the melting point of polytetrafluoroethylene. The inherent characteristics of the polytetrafluoroethylene, i.e., heat resistance, chemical resistance, abrasion resistance and lubricity, are retained and yet radiation resistance and resin transparency are imparted.Type: GrantFiled: September 14, 1999Date of Patent: March 20, 2001Assignee: Japan Atomic Energy Research InstituteInventors: Akihiro Oshima, Akira Udagawa, Yosuke Morita, Tadao Seguchi, Yoneho Tabata
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Patent number: 6197853Abstract: A thermoplastic polycarbonate molding composition having improved resistance to gamma radiation-induced yellowing is disclosed. Particularly suitable for the manufacture of devices geared for medical applications, the composition contains an additive amount of a stabilizing compound conforming structurally to where R1 denotes a C1-30-alkyl group and R2 denotes an aryl radical.Type: GrantFiled: July 1, 1999Date of Patent: March 6, 2001Assignee: Bayer CorporationInventors: Daniel H. Bolton, Sivaram Krishnan, David M. Derikart, James B. Johnson
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Patent number: 6153666Abstract: The invention provides metal loaded polymeric sheet material suitable for the preparation of protective garments for the protection of workers or subjects exposed to x-radiation.Type: GrantFiled: July 16, 1998Date of Patent: November 28, 2000Assignee: Bar-Ray Products, Inc.Inventor: Arthur Lagace
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Patent number: 6111551Abstract: The invention relates to a housing (1) with radar-absorbent properties, in particular for a radar sensor in a motor vehicle, with electrically conductive particles whose dimensions are adapted to the frequency of the radar beams to be absorbed. The housing (1) comprises a material that as its basic component contains plastic, either unreinforced or reinforced with glass fibers, selectively mineral-filled, and contains as an additive steel fibers (2) in a mixture such that the specific conductivity .sigma. of the housing adheres to a predetermined value.Type: GrantFiled: March 23, 1999Date of Patent: August 29, 2000Assignee: Robert Bosch GmbHInventors: Ewald Schmidt, Klaus Voigtlaender, Egon Moosbrugger, Bernhard Lucas, Georg Clauss, Dirk Langenhan
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Patent number: 5989649Abstract: The pigment dispersion composition having a good dispersibility, a good transparence and an anti-coating properties, which contains 0.5 to 50 parts by weight of an inorganic pigment, at least one type of dispersant selected from the group consisting of a sodium salt, an ammonium salt and an amine salt of an acrylic resin, an acryl copolymer resin, a polycarbonic acid, a condensation product of aromatic formalin sulfonate, and water or a solvent miscible with water.Type: GrantFiled: January 22, 1999Date of Patent: November 23, 1999Assignees: Kabushiki Kaisha Toshiba, Fuji Pigment Co., Ltd.Inventors: Takeo Itou, Hidemi Matsuda, Hisashi Chigusa, Kazuo Sakai, Masaru Fukuda
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Patent number: 5989720Abstract: An electromagnetic wave shield material composition and an electromagnetic wave shield product including such material composition are disclosed, which may be used on an electric or electronic device such as a portable telephone so as to attenuate or shield any electromagnetic waves generated therefrom. Specifically, the electromagnetic wave shield material composition comprises a primary element including a mixture composed of 10 to 90% by weight of silicon resin and 90 to 10% by weight of baked ceramics material, and a secondary element including a mixture composed of aluminum powder and stainless metal powder. Alternatively, the secondary element may include a mixture composed of paint, aluminum powder and/or stainless metal powder. The electromagnetic wave shield product has the form of a thin sheet of 0.5 mm to 2.0 mm thick, formed by shaping the above material composition such as by press. Alternatively, the thin sheet may have an additional thin aluminum film layer deposited on one side thereof.Type: GrantFiled: December 24, 1997Date of Patent: November 23, 1999Assignee: Taniyama & Co., Ltd.Inventor: Takanobu Taniyama
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Patent number: 5977206Abstract: A polycarbonate resin composition according to the present invention is suited to be used for medical supplies or appliances and shows a very low yellow discoloration when exposed to an ionizing radiation for sterilization. The polycarbonate resin composition comprises 100 parts by weight of a polycarbonate resin; 0.01 to 5 parts by weight of an aromatic compound containing oxy group or carbonyl group; and 0.01 to 5 parts by weight of at least one compound selected from the group consisting of: (A) a compound containing cyclic acetal group; (B) a sulfone compound; (C) a sulfoxide compound; (D) polyalkylene glycol, an ether of polyalkylene glycol or an ester of polyalkylene glycol; (E) a compound containing sulfonate group; and (F) an aromatic hydrocarbon-aldehyde resin.Type: GrantFiled: January 12, 1998Date of Patent: November 2, 1999Assignee: Mitsubishi Engineering-Plastics Corp.Inventors: Shinya Miya, Satoshi Kanayama, Ken Shimomai
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Patent number: 5948920Abstract: Partially epoxidized compounds obtained from Diels Alder adducts of dicyclopentadiene with fatty oils having a iodine number of 70 or greater and their transesterification products with C.sub.1 to C.sub.10 alkanols are disclosed. 100% solids radiation and heat curable coating compositions containing the epoxidized compounds and/or their transesterification products are also disclosed.Type: GrantFiled: October 23, 1997Date of Patent: September 7, 1999Assignee: Elf Atochem North America, Inc.Inventors: Fred Budde, Mohammed R. Kazemizadeh, Walter P. Kosar, Jr.
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Patent number: 5936007Abstract: The present invention provides polycarbonate moulding compositions containing polycarbonates, stabilisers of the general formula (I)R.sub.1 --X--(CHR.sub.4).sub.n --Y--R.sub.2and optionally polypropylene glycols.The present invention also provides use of these moulding compositions for preparing items for medical applications.Type: GrantFiled: July 14, 1998Date of Patent: August 10, 1999Assignee: Bayer AGInventors: Wolfgang Ebert, Ralf Hufen, Heidemarie Pantke, Klaus Berg
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Patent number: 5898263Abstract: The pigment dispersion composition having a good dispersibility, a good transparence and an anti-coating properties, which contains 0.5 to 50 parts by weight of an inorganic pigment, at least one type of dispersant selected from the group consisting of a sodium salt, an ammonium salt and an amine salt of an acrylic resin, an acryl copolymer resin, a polycarbonic acid, a condensation product of aromatic formalin sulfonate, and water or a solvent miscible with water.Type: GrantFiled: November 13, 1997Date of Patent: April 27, 1999Assignees: Kabushiki Kaisha Toshiba, Fuji Pigment Co., Ltd.Inventors: Takeo Itou, Hidemi Matsuda, Hisashi Chigusa, Kazuo Sakai, Masaru Fukuda
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Patent number: 5852303Abstract: A composition of matter in the form of an amorphous matrix having cesium dispersed therein is disclosed. The composition is capable of cold cathode emission, thus emitting electrons at wide range of temperatures, including room temperature. The matrix can be formed from amorphous diamond, diamond-like carbon, and other materials as well. Methods of making an amorphous matrix using single and multi-ion beam techniques are also disclosed.Type: GrantFiled: October 11, 1996Date of Patent: December 22, 1998Inventors: Jerome J. Cuomo, Seong I. Kim
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Patent number: 5852070Abstract: The present invention provides polycarbonate moulding compositions containing polycarbonates, stabilisers of the general formula (I)R.sub.1 --X--(CHR.sub.4).sub.n --Y--R.sub.2,where X and Y, are either ##STR1## , and Y may also be --S--, and optionally polypropylene glycols. The present invention also provides use of these moulding compositions for preparing items for medical applications.Type: GrantFiled: November 4, 1996Date of Patent: December 22, 1998Assignee: Bayer AGInventors: Wolfgang Ebert, Ralf Hufen, Heidemarie Pantke, Klaus Berg
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Patent number: 5851508Abstract: Disclosed are compositions suitable for use in embolizing blood vessels which compositions comprise an ethylene vinyl alcohol copolymer, a biocompatible solvent and a water insoluble contrasting agent selected from the group consisting of tantalum, tantalum oxide and barium sulfate. Also disclosed are methods for embolizing a blood vessel using the compositions described herein.Type: GrantFiled: February 14, 1997Date of Patent: December 22, 1998Assignee: MicroTherapeutics, Inc.Inventors: Richard J. Greff, Michael L. Jones, Scott Evans
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Patent number: 5807908Abstract: An ionizing radiation-resistant polycarbonate resin composition comprising 0.1 to 10 parts by weight of an organic compound having one carbon--carbon unsaturated double bond forming a non-bonding orbital in the molecule based on 100 parts by weight of a polycarbonate resin, and a medical part comprising the same. The polycarbonate resin composition and the medical part comprising the same exhibit less deterioration of color and physical properties even when irradiated with ionizing radiation for sterilization, and are, therefore, useful as a medical part material and a medical part.Type: GrantFiled: May 29, 1997Date of Patent: September 15, 1998Assignee: Sumitomo Dow LimitedInventors: Yoshikazu Hirose, Naoyoshi Kawamoto, Shigeharu Suzuki
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Patent number: 5789466Abstract: Laser marking of pigmented fluoropolymer substrates is enhanced by using titanium dioxide pigment coated with organo silane.Type: GrantFiled: May 7, 1996Date of Patent: August 4, 1998Assignee: E. I. du Pont de Nemours and CompanyInventors: John Nicholas Birmingham, Jr., Dwight Alan Holtzen, James Francis Hunt, Robert Sterrett Jenkins, Peter Dwight Spohn, James Thomas Walnock
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Patent number: RE46797Abstract: A composition of matter and method of forming a radiation shielding member at ambient temperatures in which the composition of matter includes a ‘cold-fired’ chemically bonded oxide-phosphate ceramic cement matrix; with one or more suitably prepared and distributed radiation shielding materials dispersed in the ‘cold-fired’ chemically bonded oxide-phosphate ceramic cement matrix.Type: GrantFiled: May 14, 2015Date of Patent: April 17, 2018Assignee: Co-Operations, Inc.Inventors: Judd Hamilton, Vernon D. Hamilton
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Patent number: RE48014Abstract: A composition of matter and method of forming a radiation shielding member at ambient temperatures in which the composition of matter includes a ‘cold-fired’ chemically bonded oxide-phosphate ceramic cement matrix; with one or more suitably prepared and distributed radiation shielding materials dispersed in the ‘cold-fired’ chemically bonded oxide-phosphate ceramic cement matrix.Type: GrantFiled: April 16, 2018Date of Patent: May 26, 2020Assignee: Co-Operations, Inc.Inventors: Judd Hamilton, Vernon D. Hamilton