Synthesis of an Aqueous Self-Matting Acrylic Resin with Low Gloss and High Transparency Via Controlling Surface Morphology
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The Use of PEEK in Digital Prosthodontics: a Narrative Review Ioannis Papathanasiou1, Phophi Kamposiora1*, George Papavasiliou1 and Marco Ferrari2
Papathanasiou et al. BMC Oral Health (2020) 20:217 https://doi.org/10.1186/s12903-020-01202-7 REVIEW Open Access The use of PEEK in digital prosthodontics: A narrative review Ioannis Papathanasiou1, Phophi Kamposiora1*, George Papavasiliou1 and Marco Ferrari2 Abstract Background: Advanced computer-aided design and computer-aided manufacturing (CAD-CAM) technology led to the introduction of an increasing number of machinable materials suitable for dental prostheses. One of these materials is polyetheretherketone (PEEK), a high performance polymer recently used in dentistry with favorable physical, mechanical and chemical properties. The purpose of this study was to review the current published literature on the use of PEEK for the fabrication of dental prostheses with CAD-CAM techniques. Methods: Electronic database searches were performed using the terms “PEEK”, “CAD-CAM”, “dental”, “dentistry” to identify studies related to the use of PEEK for the fabrication of CAD-CAM prostheses. The search period spanned from January 1990 through February 2020. Both in vivo and in vitro studies in English were eligible. Review articles and the references of the included publications were searched to identify relevant articles. Results: A great number of in vitro studies are available in the current literature pointing out the noticeable properties of PEEK. The use of PEEK has been recommended for a wide range of CAD-CAM fabricated fixed and removable dental prostheses. PEEK was additionally recommended for occlusal splints, intra-radicular posts, implant abutments, customized healing abutments and provisional restorations. However, only a few clinical studies were identified. Conclusions: PEEK could be considered as a viable alternative for CAD-CAM fixed and removable dental prostheses to well-established dental materials. -
Powder Coatings
Emmanouil Spyrou Powder Coatings Chemistry and Technology 3rd Revised Edition Emmanouil Spyrou: Powder Coatings: Chemistry and Technology © Copyright 2012 by Vincentz Network, Hanover, Germany ISBN: 978-3-86630-884-8 Spyrou_Powder Coatings.indb 1 14.09.2012 10:17:21 Cover: Evonik Industries AG, Marl/Germany Bibliographische Information der Deutschen Bibliothek Die Deutsche Bibliothek verzeichnet diese Publikation in der Deutschen Nationalbibliographie; detaillierte bibliographische Daten sind im Internet über http://dnb.ddb.de abrufbar. Emmanouil Spyrou, 3rd Revised Edition Based on Pieter G. de Lange’s, 2nd Edition, Vincentz Network, 2004, and Tosko A. Misev’s, 1st Edition, John Wiley and Sons, 1991 Powder Coatings: Chemistry and Technology Hanover: Vincentz Network, 2012 EUROPEAN COATINGS TecH FILES ISBN 3-86630-884-1 ISBN 978-3-86630-884-8 © 2012 Vincentz Network GmbH & Co. KG, Hanover Vincentz Network, P.O. Box 6247, 30062 Hanover, Germany This work is copyrighted, including the individual contributions and figures. Any usage outside the strict limits of copyright law without the consent of the publisher is prohibited and punishable by law. This especially pertains to reproduction, translation, microfilming and the storage and processing in electronic systems. The information on formulations is based on testing performed to the best of our knowledge. The appearance of commercial names, product designations and trade names in this book should not be taken as an indication that these can be used at will by anybody. They are often registered names which can only be used under certain conditions. Please ask for our book catalogue Vincentz Network, Plathnerstr. 4c, 30175 Hanover, Germany T +49 511 9910-033, F +49 511 9910-029 [email protected], www.european-coatings.com Layout: Vincentz Network, Hanover, Germany Printed by: Quensen Druck + Verlag GmbH & Co. -
Monomer Design Strategies to Create Natural Product-Based Polymer Materials Cite This: Nat
Natural Product Reports REVIEW Monomer design strategies to create natural product-based polymer materials Cite this: Nat. Prod. Rep.,2017,34,433 Samantha L. Kristufek, Kevin T. Wacker, Yi-Yun Timothy Tsao, Lu Su and Karen L. Wooley* Covering: 2010–Aug. 2016 In an effort towards enhancing function and sustainability, natural products have become of interest in the field of polymer chemistry. This review details the blending of chemistries developed through synthetic organic chemistry and polymer chemistry. Through synthetic organic chemical transformations, such as functional group interconversion, a protection/deprotection series, or installation of a functional group, Received 4th November 2016 various designs towards novel, synthetic, bio-based polymer systems are described. This review covers DOI: 10.1039/c6np00112b several classifications of natural products – oils and fatty acids, terpenes, lignin, and sugar derivatives – rsc.li/npr focusing on exploring monomers prepared by one or more synthetic steps. 1. Introduction – the power of synthetic organic chemistry to 4.4 Vanillin monomers transform materials science 4.5 Ferulic acid 2. Oils and fatty acids 4.6 Eugenol 2.1 Introduction – oils and fatty acids 4.7 Creosol 2.2 Saturated fatty acids 4.8 Sinapyl alcohol derivatives 2.3 Monounsaturated fatty acids: polymerization through 5. Sugar derivatives carboxylic acid-derived functional groups 5.1 Introduction – sugar derivatives 2.4 Monounsaturated fatty acids: polymerization through 5.2 Mono-substituted monomers and corresponding alkene-derived functional groups glycopolymers 2.5 Monounsaturated fatty acids: polymerization through 5.3 Di-substituted monomers and corresponding polymers both acid- and alkene-derived functional groups 6. Conclusions and future directions 2.6 Polyunsaturated fatty acids 7. -
The Transversal Strength Comparison Between Polyethylene and Glass Fiber As an Acrylic Resin Denture Plate Repair Material
Majalah Kedokteran Gigi Indonesia Vol 5 No 1 – April 2019 ISSN 2460-0164 (print), ISSN 2442-2576 (online) Aditama,Available et al: The online transversal at https://jurnal.ugm.ac.id/mkgi strength comparison … DOI: http://doi.org/10.22146/majkedgiind.17497 RESEARCH ARTICLE The transversal strength comparison between polyethylene and glass fiber as an acrylic resin denture plate repair material Pramudya Aditama*, Sabdayana**, Erwan Sugiatno* *Department of Prosthodontics, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia **Dentistry Study Program, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia *Jl Denta No 1, Sekip Utara, Yogyakarta, Indonesia; e-mail: [email protected] Submitted: 29th December 2016; Revised: 10th February 2017; Accepted: 25th March 2018 ABSTRACT Acrylic resin is the most commonly used denture base material. However, it has a shortage of being easily broken. One way to resolve this problem is by adding polyethylene (PE) or glass fibers. The purpose of this research is to compare the transversal strength of PE and glass fibers from denture plate acrylic resin repair material. The experiment involved 32 plates of heat cure acrylic with the dimensions of 65 mm x 10 mm x 2.5 mm. The speciments were prepared to create a 3 mm gap and 45° bevel. Subjects were divided into 2 groups, each group containing 16 plates. Group I was reinforced with PE fiber and Group II was reinforced with glass fiber. All plates were soaked in distillation water for one day at 37 °C. Plates were tested for transverse strength with universal testing machine and all data were analyzed with independent t-tes at 95% confidence level. -
Acrylamide, Sodium Acrylate Polymer (Cas No
ACRYLAMIDE/SODIUM ACRYLATE COPOLYMER (CAS NO. 25085‐02‐3) ACRYLAMIDE, SODIUM ACRYLATE POLYMER (CAS NO. 25987‐30‐8) 2‐PROPENOIC ACID, POTASSIUM SALT, POLYMER WITH 2‐PROPENAMIDE (CAS NO. 31212‐13‐2) SILICONE BASED EMULSION NEUTRALISED POLYACRYLIC BASED STABILIZER (NO CAS NO.) This group contains a sodium salt of a polymer consisting of acrylic acid, methacrylic acid or one of their simple esters and three similar polymers. They are expected to have similar environmental concerns and have consequently been assessed as a group. Information provided in this dossier is based on acrylamide/sodium acrylate copolymer (CAS No. 25085‐02‐3). This dossier on acrylamide/sodium acrylate copolymer and similar polymers presents the most critical studies pertinent to the risk assessment of these polymers in their use in drilling muds. This dossier does not represent an exhaustive or critical review of all available data. Where possible, study quality was evaluated using the Klimisch scoring system (Klimisch et al., 1997). Screening Assessment Conclusion – Acrylamide/sodium acrylate copolymer, acrylamide, sodium acrylate polymer and 2‐propenoic acid, potassium salt, polymer with 2‐propenamide are polymers of low concern. Therefore, these polymers and the other similar polymer in this group are classified as tier 1 chemicals and require a hazard assessment only. 1. BACKGROUND Acrylamide/sodium acrylate copolymer is a sodium salt of a polymer consisting of acrylic acid, methacrylic acid or one of their simple esters. Acrylates are a family of polymers which are a type of vinyl polymer. Synthetic chemicals used in the manufacture of plastics, paint formulations and other products. Acrylate copolymer is a general term for copolymers of two or more monomers consisting of acrylic acid, methacrylic acid or one of their simple esters. -
Adverse Reactions to Denture Resin Materials
European Review for Medical and Pharmacological Sciences 2017; 21: 5298-5305 Adverse reactions to denture resin materials M. KOSTIC1, A. PEJCIC2, M. IGIC1, N. GLIGORIJEVIC1 1Clinic of Stomatology, Department of Prosthodontics, Faculty of Medicine, University of Nis, Nis, Serbia 2Clinic of Stomatology, Department of Oral Medicine and Periodontology, Faculty of Medicine, University of Nis, Nis, Serbia Abstract. – Irrespective of the new generation holders, artificial teeth, veneers and temporary of dental materials, acrylates still have a wide crowns and bridges3,4. Soft acrylic materials are indication field. Although they are classified used in the preparation, conditioning, and treat- as biomaterials, acrylates can have both local ment of damaged and inflamed tissue. Special and systemic side effects. The individual com- types of acrylates are used as a part of the structu- ponents of the acrylic materials may leave the dental restorations and diffuse into saliva. The re of materials for the permanent binding of fixed aim of this study was to point out the potential- dentures (resin cement, glass ionomer resin mo- ly toxic components of acrylic dental materials, dified cement). As supporting materials acrylates as well as their possible adverse effects on oral have found the application in making individual tissues and the organism in general. The paper trays, certain dental restorations models, bite pla- was based on the assumption that the appropri- nes and occlusal templates1,2. ate selection of the type of acrylic material and the proper method of their preparation reduce Acrylics, depending on their indication field, their adverse effects to a minimum, which was may differ by type and method of preparation. -
Coating Containing Urethane and Acrylic Resin Mixture for Improved
Europaisches Patentamt (19) European Patent Office Office europeenpeen des brevets £P 0 661 317 B1 (12) EUROPEAN PATENT SPECIFICATION (45) Date of publication and mention (51) intci.6: C08G 18/40, C09D 175/06 of the grant of the patent: 11.11.1998 Bulletin 1998/46 (21) Application number: 94119907.7 (22) Date of filing: 16.12.1994 (54) Coating containing urethane and acrylic resin mixture for improved resistance to chipping Urethan- und Acrylharzgemisch enthaltende Beschichtung zur Verbesserung des Steinschlagschutzes Revetement a partir d'un melange de resine d'urethane et d'acrylique pour une resistance amelioree aux pierres (84) Designated Contracting States: • Foukes, Richard J. DE ES FR GB IT SE Utica, Michigan 48317 (US) (30) Priority: 23.12.1993 US 173296 (74) Representative: Munch, Volker, Dr. et al Dres. Fitzner, Munch & Jungblut (43) Date of publication of application: Kaiserswerther Strasse 74 05.07.1995 Bulletin 1995/27 40878 Ratingen (DE) (73) Proprietor: BASF CORPORATION (56) References cited: Southfield, Michigan 48086-5009 (US) EP-A- 0 542 105 EP-A- 0 555 705 (72) Inventors: • Harris, Paul J. West Bloomfield, Michigan 48324 (US) DO Is- CO CO CD Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice the Patent Office of the Notice of shall be filed in o to European opposition to European patent granted. opposition a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. a. 99(1) European Patent Convention). LU Printed by Jouve, 75001 PARIS (FR) EP0 661 317 B1 Description Field of the Invention 5 The present invention is directed to coating compositions. -
The Dynisco Extrusion Processors Handbook 2Nd Edition
The Dynisco Extrusion Processors Handbook 2nd edition Written by: John Goff and Tony Whelan Edited by: Don DeLaney Acknowledgements We would like to thank the following people for their contributions to this latest edition of the DYNISCO Extrusion Processors Handbook. First of all, we would like to thank John Goff and Tony Whelan who have contributed new material that has been included in this new addition of their original book. In addition, we would like to thank John Herrmann, Jim Reilly, and Joan DeCoste of the DYNISCO Companies and Christine Ronaghan and Gabor Nagy of Davis-Standard for their assistance in editing and publication. For the fig- ures included in this edition, we would like to acknowledge the contributions of Davis- Standard, Inc., Krupp Werner and Pfleiderer, Inc., The DYNISCO Companies, Dr. Harold Giles and Eileen Reilly. CONTENTS SECTION 1: INTRODUCTION TO EXTRUSION Single-Screw Extrusion . .1 Twin-Screw Extrusion . .3 Extrusion Processes . .6 Safety . .11 SECTION 2: MATERIALS AND THEIR FLOW PROPERTIES Polymers and Plastics . .15 Thermoplastic Materials . .19 Viscosity and Viscosity Terms . .25 Flow Properties Measurement . .28 Elastic Effects in Polymer Melts . .30 Die Swell . .30 Melt Fracture . .32 Sharkskin . .34 Frozen-In Orientation . .35 Draw Down . .36 SECTION 3: TESTING Testing and Standards . .37 Material Inspection . .40 Density and Dimensions . .42 Tensile Strength . .44 Flexural Properties . .46 Impact Strength . .47 Hardness and Softness . .48 Thermal Properties . .49 Flammability Testing . .57 Melt Flow Rate . .59 Melt Viscosity . .62 Measurement of Elastic Effects . .64 Chemical Resistance . .66 Electrical Properties . .66 Optical Properties . .68 Material Identification . .70 SECTION 4: THE SCREW AND BARREL SYSTEM Materials Handling . -
Versatic Acid/Vinyl Acetate의 비닐 에스테르를 가지는 Α,Ω-Diacrylate Poly(Dimethylsiloxane)의 에멀션 공중합 연구
Polymer(Korea), Vol. 32, No. 2, pp 95-102, 2008 Versatic Acid/Vinyl Acetate의 비닐 에스테르를 가지는 α,ω-Diacrylate Poly(dimethylsiloxane)의 에멀션 공중합 연구 Hamid Javaherian Naghash7, Shadpour MallakpourF, Parivash Yavari Forushani, and Nurseli UyanikFF Department of Chemistry, Islamic Azad University, Shahreza Branch, P.O. Box 311-86145, Shahreza, Isfahan, I. R. Iran. *Organic Polymer Chemistry Research Laboratory, College of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran **Department of Chemistry, Istanbul Technical University, 80626 Maslak, Istanbul, Turkey (2007년 8월 21일 접수, 2008년 1월 19일 채택) A Study on Emulsion Copolymerization of α,ω-Diacrylate Poly(dimethylsiloxane) Containing Vinyl Ester of Versatic Acid/Vinyl Acetate Hamid Javaherian Naghash7, Shadpour MallakpourF, Parivash Yavari Forushani, and Nurseli UyanikFF Department of Chemistry, Islamic Azad University, Shahreza Branch, P.O. Box 311-86145, Shahreza, Isfahan, I. R. Iran *Organic Polymer Chemistry Research Laboratory, College of Chemistry, Isfahan University of Technology, Isfahan 84156, Iran **Department of Chemistry, Istanbul Technical University, 80626 Maslak, Istanbul, Turkey (Received August 21, 2007; Accepted January 19, 2008) Abstract: The α,ω-diacrylate poly(dimethylsiloxane) (DA-PDMS) containing vinyl ester of versatic acid/vinyl acetate (Veova-10/VAc) was prepared by emulsion copolymerization of (DA-PDMS), Veova-10 (with VAc), and auxiliary agents at 85 ℃ in the presence of ammonium peroxodisulfate (APS) as an initiator. Sodium dodecyl sulfate (SDS) and nonylphenol ethylene oxide-40 units (NP-40) were used as anionic and nonionic emulsifiers, respectively. The resulting copolymers were characterized by using Fourier transform infrared spectroscopy (FT-IR). Thermal properties of the copolymers were studied by using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). -
United States Patent 19 11 Patent Number: 5,352,500 Memon 45 Date of Patent: Oct
USOO5352500A United States Patent 19 11 Patent Number: 5,352,500 Memon 45 Date of Patent: Oct. 4, 1994 (54) THERMOPLASTC POLYMER 56) References Cited COMPOSITIONS CONTAINING U.S. PATENT DOCUMENTS MELTRHEOLOGY MODIFERS 3,591,659 7/1971 Brinkmann et al. ................ 260/873 4,245,058 1/1981 Liu ...................................... 525/148 75 Inventor: Nazir A. Memon, Fallsington, Pa. 4,257,937 3/1981 Cohen et al. ... 260/40R 4,263,415 4/1981 Liu ...................................... 525/148 4,327,137 4/1982 Sawa et al. ......................... 428/35.7 73) Assignee: Rohm and Haas Company, 4,544,706 10/1985 Finch et al. ......................... 525/146 Philadelphia, Pa. 4,587,298 5/1986 Miller .................................... 525/67 4,622,363 11/1986 Eichenauer et al. .................. 525/67 4,774,289 9/1988 Kress et al. ....... ... 525/146 [21] Appl. No.: 14,054 4,883,841 1/1989 Riew et al. .......................... 525/148 22 Fied: Feb. 5, 1993 FOREIGN PATENT DOCUMENTS 0155989 2/1985 European Pat. Off. Primary Examiner-Susan W. Berman Related U.S. Application Data Attorney, Agent, or Firm-Roger K. Graham (60) Division of Ser. No. 389,656, Feb. 18, 1992, aban doned, which is a continuation-in-part of Ser. No. 57 ABSTRACT 153,170, Feb. 8, 1988, abandoned. Acrylic polymers having a minimum molecular weight of about 500,000, and preferably of about 1,500,000, are (51) Int. Cl....................... B29D 22/00; B29D 23/00; blended at levels of from 1 to 25% with thermoplastic B32B 1/08 resins to improve the melt rheology of the thermoplas (52) U.S. -
UV-Curable Urethane-(Meth)Acrylate Polymers UV-Vernetzbare Urethan-(Meth)Acrylat Polymere Polymères D’Urethane-(Meth)Acrylate Réticulable Par UV
(19) TZZ_¥_T (11) EP 1 767 553 B1 (12) EUROPEAN PATENT SPECIFICATION (45) Date of publication and mention (51) Int Cl.: of the grant of the patent: C08F 220/36 (2006.01) C09K 19/38 (2006.01) 21.12.2011 Bulletin 2011/51 C08G 18/67 (2006.01) (21) Application number: 05108850.8 (22) Date of filing: 26.09.2005 (54) UV-curable urethane-(meth)acrylate polymers UV-vernetzbare Urethan-(meth)acrylat Polymere Polymères d’urethane-(meth)acrylate réticulable par UV (84) Designated Contracting States: (72) Inventor: Erdhuisen, Erwin Wilhelmus Petrus AT BE BG CH CY CZ DE DK EE ES FI FR GB GR 6931 EC, Westervoort (NL) HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (74) Representative: Beetz, Tom et al De Vries & Metman (43) Date of publication of application: Overschiestraat 180 28.03.2007 Bulletin 2007/13 1062 XK Amsterdam (NL) (73) Proprietor: Dejima Tech bv (56) References cited: 6827 AV Arnhem (NL) EP-A- 0 293 911 EP-A- 0 868 680 US-A- 5 308 535 Note: Within nine months of the publication of the mention of the grant of the European patent in the European Patent Bulletin, any person may give notice to the European Patent Office of opposition to that patent, in accordance with the Implementing Regulations. Notice of opposition shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention). EP 1 767 553 B1 Printed by Jouve, 75001 PARIS (FR) EP 1 767 553 B1 Description [0001] The invention pertains to UV-curable urethane-(meth)acrylate polymers, to an optical film containing said urethane-(meth)acrylate polymers, and to a display containing said optical film. -
Acrylic Based Thermoplastic Elastomers: Design and Synthesis for Improved Mechanical Performance
University of Tennessee, Knoxville TRACE: Tennessee Research and Creative Exchange Doctoral Dissertations Graduate School 5-2017 All Acrylic Based Thermoplastic Elastomers: Design and Synthesis for Improved Mechanical Performance Wei Lu University of Tennessee, Knoxville, [email protected] Follow this and additional works at: https://trace.tennessee.edu/utk_graddiss Part of the Materials Chemistry Commons, Organic Chemistry Commons, Polymer and Organic Materials Commons, Polymer Chemistry Commons, and the Polymer Science Commons Recommended Citation Lu, Wei, "All Acrylic Based Thermoplastic Elastomers: Design and Synthesis for Improved Mechanical Performance. " PhD diss., University of Tennessee, 2017. https://trace.tennessee.edu/utk_graddiss/4411 This Dissertation is brought to you for free and open access by the Graduate School at TRACE: Tennessee Research and Creative Exchange. It has been accepted for inclusion in Doctoral Dissertations by an authorized administrator of TRACE: Tennessee Research and Creative Exchange. For more information, please contact [email protected]. To the Graduate Council: I am submitting herewith a dissertation written by Wei Lu entitled "All Acrylic Based Thermoplastic Elastomers: Design and Synthesis for Improved Mechanical Performance." I have examined the final electronic copy of this dissertation for form and content and recommend that it be accepted in partial fulfillment of the equirr ements for the degree of Doctor of Philosophy, with a major in Chemistry. Jimmy W. Mays, Major Professor We have read this dissertation and recommend its acceptance: Alexei P. Sokolov, Michael D. Best, Thomas A. Zawodzinski Accepted for the Council: Dixie L. Thompson Vice Provost and Dean of the Graduate School (Original signatures are on file with official studentecor r ds.) All Acrylic Based Thermoplastic Elastomers: Design and Synthesis for Improved Mechanical Performance A Dissertation Presented for the Doctor of Philosophy Degree The University of Tennessee, Knoxville Wei Lu May 2017 Copyright © 2017 by Wei Lu All rights reserved.