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Synthesis of Hexacelsian Barium Aluminosilicate by Film Boiling Chemical Vapour Process C
Synthesis of hexacelsian barium aluminosilicate by film boiling chemical vapour process C. Besnard, A. Allemand, P. David, Laurence Maillé To cite this version: C. Besnard, A. Allemand, P. David, Laurence Maillé. Synthesis of hexacelsian barium aluminosilicate by film boiling chemical vapour process. Journal of the European Ceramic Society, Elsevier, In press, 10.1016/j.jeurceramsoc.2020.02.021. hal-02494032 HAL Id: hal-02494032 https://hal.archives-ouvertes.fr/hal-02494032 Submitted on 28 Feb 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Synthesis of hexacelsian barium aluminosilicate by film boiling chemical vapour process C. Besnard1, A. Allemand1-2, P. David2, L. Maillé1* 1University of Bordeaux, CNRS, Safran, CEA, Laboratoire des Composites ThermoStructuraux (LCTS), UMR 5801, F-33600 Pessac 2CEA Le Ripault, F-37260, Monts * Corresponding author, email address: [email protected] Abstract An original oxide/oxide ceramic-matrix composite containing mullite-based fibers and a barium aluminosilicate matrix has been synthesized by the film boiling chemical vapour infiltration process. Alkoxides were used as liquid precursors for aluminum, silicon and barium oxides. The structure and microstructure of the oxide matrix were characterized by Scanning Electron Microscopy, Energy Dispersive Spectroscopy and X-ray diffraction. -
United States Patent (19) 11 3,929,495 Broemer Et Al
United States Patent (19) 11 3,929,495 Broemer et al. (45) Dec. 30, 1975 54) OPTICAL BORATE GLASS OF HIGH 3,149,984 9/1964 Faulstich........................... 106/47 R CHEMICAL RESISTANCE AND PROCESS 3,307,929 3/1967 Trap.................................. 106/47 R 3,480,453 it 1/1969 Reid et al.......................... 106/47 R OF MAKING SAME 3,486,915 12/1969 Broemer et al................... 106/47 R (75) Inventors: Heinz Broemer, Hermannstein; 3,510,325 5/1970 Broemer et al................... 106/47 R Norbert Meinert, Wetzlar, both of FOREIGN PATENTS OR APPLICATIONS Germany 863,352 3/1961 United Kingdom............... 106/47 Q 73 Assignee: Ernst Leitz G.m.b.H., Wetzlar, 4,424,420 10/1969 Japan................................ 106/47 Q Germany Filed: May 15, 1973 Primary Examiner-Winston A. Douglas 22) Assistant Examiner-Mark Bell 21 Appl. No.: 360,418 Attorney, Agent, or Firm-Erich M. H. Radde 30 Foreign Application Priority Data 57 ABSTRACT May 15, 1972 Germany............................ 2223564 An optical borate glass of high chemical resistance, with negative anomalous partial dispersion, refraction 52) U.S. Cl. ............................. 106/47 Q; 106/47 R index n between 1,65 and 1,79, and Abbe number ve 51 Int. CI..... C03C 3/14: CO3C 3/00; C03C 3/30 between 40 and 30 is composed of boron trioxide, 58) Field of Search......................... 106/47 O, 47 R lead oxide, and aluminum oxide. It may additionally contain lithium, sodium, and/or potassium oxides, zinc (56) References Cited oxide, zirconium dioxide, tantalum pentoxide, and, if UNITED STATES PATENTS desired, antimony trioxide and/or bismuthum trioxide. -
United States Patent (19) (11) 4,154,806 Szabó Et Al
United States Patent (19) (11) 4,154,806 Szabó et al. 45) May 15, 1979 54 PROCESS FOR THE PRODUCTION OF (56) References Cited NITROUS OXDE U.S. PATENT DOCUMENTS 75) Inventors: Zoltán Szabó; Jenö Trompler; 1,098,305 5/1914 Torley et al. ........................ 423/400 Erzsébet Hollós, née Rakosinyi, all of 2,111,277 3/1938 Castner et al. ....................... 423/400 Budapest, Hungary 2,425,582 8/1947 Vingee ................................. 423/400 3,411,883 11/1968 Smit ................................. 423/400X 73) Assignee: Eötvös Lóránd Tudományegyetem, FOREIGN PATENT DOCUMENTS Budapest, Hungary 276069 5/1913 Fed. Rep. of Germany ........... 423/400 (21) Appl. No.: 865,119 Primary Examiner-G. O. Peters 57 ABSTRACT (22 Filed: Dec. 28, 1977 Ammonium nitrate is mixed, in a weight ratio of higher than 1:5, with a melt containing ammonium hydrogen 30 Foreign Application Priority Data sulfate and ammonium sulfate respectively present in Dec. 30, 1976 HU) Hungary ............................. TO 1047 the melt in a ratio of at least 4:1. The resultant mixture is subjected to thermal decomposition at 200-240 de 51) Int. C.’.............................................. C01B 21/22 grees C to produce nitrous oxide. 52) U.S. C. .................................................... 423/400 58) Field of Search ......................................... 423/400 10 Claims, No Drawings 4,154,806 2 temperature, i.e. over 250 C., the nitrous oxide formed PROCESS FOR THE PRODUCTION OF NITROUS decomposes to higher nitrogen oxides and nitrogen. A OXDE further disadvantage of the increased temperature con sists in that ammonium nitrate sublimates and thus The invention concerns a process for the production causes material loss and operational problems. -
Synthesis of a Disperse Phase of Barium Oxide on Aluminum Oxide
Synthesis of a Disperse Phase of Barium Oxide on Aluminum Oxide by Successive Ionic Layer Deposition Results and Discussion SILD was used to deposit nanoislands of aluminum oxide on a silicon wafer, and then deposit even smaller nanoislands of barium oxide on the surface of the aluminum oxide Thomas I Gilbert * and Johannes W. Schwank nanoislands. Modifications to the conventional SILD procedure were necessary to achieve a University of Michigan, Ann Arbor, Michigan 48109 (USA) successful synthesis. This disperse phase of barium oxide on aluminum oxide supported on a *[email protected] silicon wafer was thermally stable to 450°C. Introduction Heterogeneous catalyst design, synthesis, and characterization have been strongly a b influenced by recent advances in nanoscience [1] Several recent studies suggest that a highly dispersed phase of barium oxide supported on γ-alumina is a better catalyst for NO x storage in lean burn engine emissions than a bulk-like phase of supported barium oxide [2-5]. Successive ionic layer deposition (SILD), also known as successive ionic layer adsorption and reaction (SILAR), is an aqueous method which exploits the electric double layer effect to create thin solid films on supports. In SILD, submonolayers of desired cations and anions are alternately and selectively adsorbed on a support material to produce SILD nanoislands or nanolayers with controlled composition and morphology. Much still remains to be understood about the SILD mechanism. It is unclear whether a precipitate is simply formed on the substrate with each SILD cycle or whether ionic or electrostatic forces persist through SILD layers. If the latter occurs, it is conceivable that these Figure 1. -
Effects of B2O3 (Boron Trioxide) on Colon Cancer Cells: Our First-Step Experience and in Vitro Results
Turkish Journal of Biology Turk J Biol (2019) 43: 209-223 http://journals.tubitak.gov.tr/biology/ © TÜBİTAK Research Article doi:10.3906/biy-1901-34 Effects of B2O3 (boron trioxide) on colon cancer cells: our first-step experience and in vitro results 1, 2 3 4 5 3 Özgür ALBUZ *, Dilek DÜLGER , Beste Çağdaş TUNALI , Feray AYDIN , Selim YALÇIN , Mustafa TÜRK 1 Department of General Surgery, Keçiören Training and Research Hospital, Ankara, Turkey 2 Department of Medical Microbiology of Basic Medical Sciences, Faculty of Medicine, Karabük University, Karabük, Turkey 3 Department of Bioengineering, Faculty of Engineering, Kırıkkale University, Kırıkkale, Turkey 4 Department of General Surgery, 29 Mayıs State Hospital, Ankara, Turkey 5 Department of Oncology, Faculty of Medicine, Kırıkkale University, Kırıkkale, Turkey Received: 15.01.2019 Accepted/Published Online: 11.06.2019 Final Version: 13.06.2019 Abstract: Boron oxide (B2O3) is derived from dehydration of boric acid and is a colorless, semitransparent, crystalline compound that is moderately soluble in water. On the other hand, boron oxide is chemically hygroscopic. This gives the molecule the ability to soak up water and adhere to tissues. Boron oxide can be used locally after tumor debulking in inoperable tumors and especially when the tumor-free margin distance cannot be provided. For all these reasons we aimed to evaluate the in vitro test results of B2O3 in terms of cytotoxicity, genotoxicity, apoptosis, and necrotic effects on L929 fibroblast cells and DLD-1 colorectal adenocarcinoma cells. Our studies demonstrated that boron oxide compounds appear to be highly cytotoxic for both cell lines according to WST cell viability assay (44.22% and 18.36% on DLD-1 and L929, respectively). -
Improving Boron for Combustion Applications
New Jersey Institute of Technology Digital Commons @ NJIT Dissertations Electronic Theses and Dissertations Summer 8-31-2019 Improving boron for combustion applications Kerri-lee Annique Chintersingh New Jersey Institute of Technology Follow this and additional works at: https://digitalcommons.njit.edu/dissertations Part of the Aerospace Engineering Commons, Chemical Engineering Commons, and the Materials Science and Engineering Commons Recommended Citation Chintersingh, Kerri-lee Annique, "Improving boron for combustion applications" (2019). Dissertations. 1420. https://digitalcommons.njit.edu/dissertations/1420 This Dissertation is brought to you for free and open access by the Electronic Theses and Dissertations at Digital Commons @ NJIT. It has been accepted for inclusion in Dissertations by an authorized administrator of Digital Commons @ NJIT. For more information, please contact [email protected]. Copyright Warning & Restrictions The copyright law of the United States (Title 17, United States Code) governs the making of photocopies or other reproductions of copyrighted material. Under certain conditions specified in the law, libraries and archives are authorized to furnish a photocopy or other reproduction. One of these specified conditions is that the photocopy or reproduction is not to be “used for any purpose other than private study, scholarship, or research.” If a, user makes a request for, or later uses, a photocopy or reproduction for purposes in excess of “fair use” that user may be liable for copyright infringement, -
Position Paper of the European Glass Industry on the Proposed Inclusion of Boron Trioxide on the Candidate List for Authorization
Position Paper of the European Glass Industry on the Proposed Inclusion of Boron Trioxide on the candidate list for authorization April 2012 Glass manufacturers support the REACH Regulation and believe that a reduction of the risk associated with worker exposure and the environmental impact of dangerous substances is welcome in the EU Market. Glass Alliance Europe welcomes the opportunity to provide its contribution to the public consultation on the inclusion of boron trioxide in the candidate list for authorization of the REACH Regulation. CONTRIBUTION TO THE CONSULTATION PROCESS Germany submitted to ECHA an Annex XV dossiers for the identification of boron trioxide as a Substance of Very High Concern to be included in the candidate list for authorization. The rationale for this identification is the classification of boron trioxide as toxic for reproduction category 1B in Regulation (EC) No 1272/2008, as amended and adapted to technical and scientific progress by Regulation (EC) No 790/2009.. Notwithstanding the rationale being perfectly in line with the REACH Regulation, the glass industries believe that the introduction of boron trioxide on the candidate list for authorization could lead to future misunderstanding. The glass industries do not want to engage in any discussion on the right classification of boron trioxide, which is outside of our competence. However, it is very well known that there are still a lot of discussions going on at EU and International level on the correct classification of boron trioxide. For example Poland has indicated its intention to submit borate reclassification dossiers under CLP. This is based on their review of the data arising from new studies on worker exposure (in China and Turkey) and concluded that a reclassification of these substances is warranted. -
United States Patent (19) - (11) 4,178,317 A
United States Patent (19) - (11) 4,178,317 A. Horn et al. 45 Dec. 11, 1979 54 MANUFACTURE OF OLEFINICALLY (56) References Cited UNSATURATED ALPHATIC OR CYCLOALIPHATIC HYDROCARBONS U.S. PATENT DDOCUME MENT S 4,024,171 5/1977 McArthur ....................... 260/666A 75) Inventors: Peter Horn, Hirschberg; Otto-Alfred FOREIGN PATENT DOCUMENTS Grosskinsky; Hugo Fuchs, both of Ludwigshafen, all of Fed. Rep. of 943745 12/1963 United Kingdom. Germany Primary Examiner-Veronica O'Keefe w Attorney, Agent, or Firm-Keil & Witherspoon 73) Assignee: BSAngelschall, Fed. Rep. 57 ABSTRACT Olefinically unsaturated aliphatic or cycloaliphatic hy 21) Appl. No.: 907,678 drocarbons are manufactured by bringing alkanecar boxylic acids of 3 to 20 carbon atoms, alkanedicarboxy ilar. lic acids of 4 to 20 carbon atoms or 5-membered or (22) Filed: May 19, 1978 6-membered cycloalkanecarboxylic acids or their alkyl, O 9 cycloalkyl, aralkyl or phenyl esters, in the gas phase, at 30. Foreign Application Priority Data from 250 to 800 C., into contact with catalysts in Jun. 10, 1977 (DE) Fed. Rep. of Germany. 2726106 which the active composition consists of boron trioxide, boric acid and/or boron nitride, together with one or 51) Int. C.’................................................ C07C3/00 more of the oxides of aluminum, silicon, tin, lead, tita 52 U.S. C. .................................... 585/357; 585/638; nium and zirconium. 585/640 (58) Field of Search .................................... 260/666 A 9 Claims, No Drawings 4,178,317 1. 2 ahydrobenzoate, cyclohexyl -
United States Patent 15 3,650,778 Dumesnil Et Al
United States Patent 15 3,650,778 Dumesnil et al. (45) Mar. 21, 1972 (54) LOW-EXPANSION, LOW-MELTING 3,520,831 7/1970 Trap et al............................. 106/47 X ZINCPHOSPHOVANADATE GLASS 3,393,060 7/1968 Blair et al................................ 106/47 COMPOSITIONS 3,534,209 10, 1970 Anderson et al......................... 106/47 (72) Inventors: Maurice E. Dumesnil, Palo Alto; Robert R. OTHER PUBLICATIONS Hewitt, San Jose; Joseph L. Bozarth, Grossman et al., J. AM Cer. Soc. Vol. 47, (Sept., 1964) “Zinc Mountain View, all of Calif. Borophosphate Glass' page 471 (73) Assignee: Fairchild Camera and Instrument Cor Primary Examiner-Daniel E. Wyman poration, Syosset, Long Island, N.Y. Assistant Examiner-W. R. Satterfield 22) Fied: Oct. 29, 1969 Attorney-Roger S. Borovoy and Alan H. Macpherson (21) Appl. No.: 870,620 57) ABSTRACT Low-melting, low-expansion, lead-free glass compositions are 52) U.S.C. ............................... 106/47 R, 106/46, 117/125 provided for sealing ceramics parts and encapsulating ceramic 51 Int. Cl............................................................ C03c.3/00 substrates. In addition to having a thermal expansion matching 58 Field of Search................ 106/47, 48, 46; 1611196, 192; that of alumina, the glass compositions provide for the forma 252/519; 65/43; 117/125 tion of a glass-to-alumina seal in the 380 to 450° C. tempera ture range. 56) References Cited 1 Claims, 3 Drawing Figures UNITED STATES PATENTS 3,446,695 5/1969 Janakirama-Rao......................106/47 7 8 4 22 >- "l-D 5 6 2 IO Patented March 21, 1972 3,650,778 4 O F. G.2 NVENTORS O MAURCE EDUMESN ROBERT R HEWITT 0 00 200300 400 500 JOSEPH L BOZARTH TEMPERATURE OC BY %a 4 ATTORNEY 3,650,778 1. -
Rohs/REACH Compliance
Page 1 of 2 RoHS/REACH Compliance International Manufacturing Services, Inc. (IMS) recognizes and supports the worldwide effort for environmental protection and conservation. REACH Regulation REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) is a European Union Commission (EUC) Regulation on chemicals and their safe use (EC 1907/2006) entered into force on 01 June, 2007 and will be phased in until 2018. • REACH applies to all imports to the EU • There are three levels of interest defined by REACH: o Substances: Chemical elements and their compounds in the natural state, identifiable by CAS or EINIC number (Ex: metal) o Preparations: A combination or mixture of two or more substances (Ex.: ink, adhesive) o Article: An object whose special shape, surface or design determines its function to a greater degree than does its chemical composition; assembled products (Ex: cars, electronic components) • The REACH regulation focuses on the control of Substances of Very High Concern (SVHCs) published in accordance with Article 59 of the REACH regulation • SVHCs are relevant to Substances and Preparations, not Articles • Registration of SVHCs is required for Substances and Preparations, not Articles • Notification and communication is required for Articles under the following conditions: o The Article has an “intended release” of SVHC o SVHC content > 0.1% of Total Article Weight Products manufactured and supplied by IMS are “articles” as defined by the REACH regulation and do not release substances under their normal use. The diboron trioxide and lead oxide present in certain products supplied by IMS are an element of the glass material. The glass is a UVCB substance (substance of unknown or variable composition, Complex reaction products or biological materials) under the REACH regulation. -
Study of the System Barium Oxide-Aluminum Oxide-Water at 30° C by Elmer T
Journal of Research of the National Bureau of Standards Vol. 45, No. 5, November 1950 Research Faper 2149 Study of the System Barium Oxide-Aluminum Oxide-Water at 30° C By Elmer T. Carlson, Thomas J. Chaconas, and Lansing S. Wells A study has been made of the action of water and of barium hydroxide solutions on the following compounds: BaO.Al2O3, 3BaO.Al2O3, BaO.Al2O3.H2O," BaO.Al2O3.2H2O, BaO.Al2O3.4H2O, BaO.Al2O3.7H2O, 7BaO.6Al2O3.36H2O, 2BaO.Al2O3.5H2O, and A12O3.3H,O. From this, together with a study of precipitation from supersaturated barium aluminate solutions, a diagram of phase equilibria (stable and metastable) at 30° C has been drawn. All the barium aluminates are hydrolyzed by water. The stable solid phases in the system BaO-Al2O3-H2O at 30° C are A12O3.3H2O (gibbsite), Ba(OH)2.8H2O, and, over a narrow range, probably 2BaO.Al2O3.5H2O. With the exception of the two lowest hydrates, all the hydrated barium aluminates possess a range of metastable solubility. I. Introduction properties nor X-ray diffraction data, however, were given. Malquori [16] has published a phase equi- Although the calcium aluminates, because of their librium diagram of the system BaO-Al2O3-H2O at relationship to hydraulic cements, have been the 20° C. subject of numerous investigations here and elsewhere The present investigation includes a study of the during recent years, the barium aluminates have been action of water and of barium hydroxide solutions somewhat neglected. The latter, at present, are of on the various aluminates and a diagram of phase limited practical importance. -
The System Bao-B2O3
U. S. Department of Commerce Research Paper RPl956 National Bureau of Standards Volume 42, February 1949 Part of the Journal of Research of the National Bureau of Standards By Ernest M. Levin and Howard F. McMurdie A phase equilibrium diagram of the system BaO-B20 3 has been constructed from data obtained essentially by the quenching method. Four congruently m elting compounds were identifi ed: BaOAB20 3, melting at 879° ± 5° C; BaO.2B20 3, melting at 900° ± 5° C; BaO.B20 3, melting at 1,095° ± 5° C; and 3BaO.B20 3, melting at 1,383° ± 5° C . Some optical properties of these compounds were determined with the petrographic microscope, and X-ray d.ffraction data suitable for their id entification were obtained. Barium metaborate, BaO.B 20 3, showed an inversion occurring between 100° and 400° C. Mixtures containing less than 30 percent of BaO were found to eparate on fusion into two li quid layers, one of which contained 30 per cent of BaO, wherea t he other was nearly pure 13 20 3• A curve showing indices of refraction of the quenched glasses is also prescntcd. I. Introduction 1,060 ° C, 1,002 ° C, and 1,3 15° C, corresponding to the compounds BaO.B20 3, 2BaO.B20 a, and 3BaO. The sLu~ly of this system was undertaken as a B 20 a, respectively. In a tudy on the limits of preliminary to a study of part of the ternary miscibility of boric anhydride and borates in system, BaO-B20 3-Si02 • The latter sy tern is of the fused state, Guertler [5] found that barium fundamental importance to the glass industry, as oxide melted together with more than 63.2 percent it serves as a starting point for investigations of by weight of B 20 a separated into two layers.