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Industrial Photoinitiators

Author: W. Arthur Green
Publisher: CRC Press
ISBN: 143982746X
Size: 60.61 MB
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The use of photoinitiators in the UV curing process shows remarkable possibilities in myriad applications. Highlighting critical factors such as reactivity, cure speeds, and application details, Industrial Photoinitiators: A Technical Guide is a practical, accessible, industrially oriented text that explains the theory, describes the products, and outlines the practice in simple language for the novice and expert alike. The basics of UV light The book begins by examining the nature of UV light and the types of commercial UV lamps that are available. It discusses the light absorption process and the excited states that are produced by the photoinitiator prior to the production of radicals. Next, the book examines the structure of the photoinitiator and the mechanism by which a reactive species is formed, along with the deactivating processes that inhibit the various photophysical and photochemical steps that occur as radicals are produced. Commercial photoinitiators Providing a list of companies and suppliers, the author explores the distinct groups of commercial photoinitiators and the variations in their structure. He describes the factors that determine which photoinitiators should be chosen for a particular application and how the different types are used. He also explains the reasons why a cured coating may display yellowing and describes the use of stabilizers to reduce the yellowing effect. Cationic curing Exploring a small but growing area of interest in the UV curing industry, the book concludes by discussing cationic curing and examines the different scope of parameters and different chemistry involved. It also describes factors that affect the use of cationic photoinitiators. Based on more than 30 years of experience working with photoinitiators, W. Arthur Green offers a unique resource that provides product developers and others working in industry with the practical information they need to fully understand the basics of this evolving field.

Photoinitiators For Polymer Synthesis

Author: Jean-Pierre Fouassier
Publisher: John Wiley & Sons
ISBN: 3527648267
Size: 80.49 MB
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Photoinitiating systems for polymerization reactions are largely encountered in a variety of traditional and high-tech sectors, such as radiation curing, (laser) imaging, (micro)electronics, optics, and medicine. This book extensively covers radical and nonradical photoinitiating systems and is divided into four parts: * Basic principles in photopolymerization reactions * Radical photoinitiating systems * Nonradical photoinitiating systems * Reactivity of the photoinitiating system The four parts present the basic concepts of photopolymerization reactions, review all of the available photoinitiating systems and deliver a thorough description of the encountered mechanisms. A large amount of experimental and theoretical data has been collected herein. This book allows the reader to gain a clear understanding by providing a general discussion of the photochemistry and chemistry involved. The most recent and exciting developments, as well as the promising prospects for new applications, are outlined.

Radiation Curing

Author: Patrick Glöckner
Publisher: Vincentz Network GmbH & Co KG
ISBN: 9783866309074
Size: 12.60 MB
Format: PDF
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Radiation curing is the fastest growing technology in the inks and coatings industries. It is being widely discussed in numerous publications and conferences and is being used or at least tested in all possible industrial applications. This book's objective is to link theory and practice in a reference guide for formulators in the field of radiation curing. The book is also intended for students and young professionals in coatings and printing inks with no previous experience of radiation curing. In addition to the fundamental principles, therefore, guidance is offered in the selection of raw materials. The Trouble Shooting Chapter summarizes approaches to solving problems that may arise during the manufacture and processing of radiation curable systems. The focus is on 100 % liquid coating systems that are radically or cationically curable by UV or electron beam radiation. Technologies that are still relatively unimportant are beyond the scope of this book and are discussed only briefly.

Emulsion Polymerization And Emulsion Polymers

Author: Peter A. Lovell
Publisher: Wiley
ISBN: 9780471967460
Size: 69.52 MB
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Emulsion Polymerization and Emulsion Polymers Edited by Peter A. Lovell Manchester Materials Science Centre, UMIST, Manchester, UK and Mohamed S. El-Aasser Emulsion Polymers Institute and Department of Chemical Engineering, Lehigh University, Bethlehem, PA, USA Emulsion polymerization is a technologically and commercially important reaction used to produce synthetic polymers and latexes for a wide range of applications. It is the basis of a massive global industry that is expanding due to the versatility of the reaction and the greater realization of the ability to control properties of the polymer latexes produced. Emulsion Polymerization and Emulsion Polymers provides an up-to-date treatment of both academic and industrial aspects of the subject in a single self-contained volume. Established knowledge is integrated with latest developments and introductory chapters to give a state-of-the-art summary which is also suitable as a broad based introduction to the field. The individual chapters have been written by specialists from academia and industry and are presented in a way which ensures that the book will be of equal value to experienced researchers and students.

Uv Coatings

Author: Reinhold Schwalm
Publisher: Elsevier
ISBN: 9780080466897
Size: 30.93 MB
Format: PDF, Kindle
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Since UV curing (light induced polymerisation of multifunctional oligomers) is a very ecoefficient and energy saving curing method, the growth rates of UV curable coatings are in the range of 10% per year. The typical UV coatings are solvent free (100% solids), thus helping the industry and the environment to reduce significantly VOC (volatile organic compounds). Recently, the automotive industry has discovered that UV cured coatings are very scratch resistant, which stimulated very extensive work into the development of UV coatings for automotive applications. Since UV curing is very universal, also other systems besides the 100% solid (typical) UV coatings are developed, like waterbased UV- , UV powder and Dual cure (UV and thermal) systems. UV Coatings contains an overview of the technology, the curing process including the equipment necessary, the raw materials (resins, diluents, photoinitiators) used, the advantages and drawbacks of this fast emerging technology, as well as proposed technical solutions to tackle the disadvantages. Structure-property relationships will be given, especially regarding the mechanical properties of coatings as well as scratch resistance, mainly dealing with automotive performance criteria. The main part of the book will deal with new developments, like water-based UV coatings, UV powder coatings and dual cure systems, cured by UV and thermal energy, which have been developed to cure the coating on three dimensional substrates in shadow areas. The main applications of UV Coatings will be described, starting with the classical ones on temperature sensitive substrates, like wood, paper and plastics, where the UV curable coatings are already well established. * Looking at UV curing as a key to scratch resistant automotive clear coats * Ecoefficiency of UV Coatings * Comprehensive overview of the technology, materials and markets

Handbook Of Industrial Inkjet Printing

Author: Werner Zapka
Publisher: John Wiley & Sons
ISBN: 3527338322
Size: 17.85 MB
Format: PDF, Docs
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Unique in its integration of individual topics to achieve a full-system approach, this book addresses all the aspects essential for industrial inkjet printing. After an introduction listing the industrial printing techniques available, the text goes on to discuss individual topics, such as ink, printheads and substrates, followed by metrology techniques that are required for reliable systems. Three iteration cycles are then described, including the adaptation of the ink to the printhead, the optimization of the ink to the substrate and the integration of machine manufacturing, monitoring, and data handling, among others. Finally, the book summarizes a number of case studies and success stories from selected areas, including graphics, printed electronics, and 3D printing as well a list of ink suppliers, printhead manufacturers and integrators. Practical hints are included throughout for a direct hands-on experience. Invaluable for industrial users and academics, whether ink developers or mechanical engineers, and working in areas ranging from metrology to intellectual property.

Photocured Materials

Author: Atul Tiwari
Publisher: Royal Society of Chemistry
ISBN: 178262001X
Size: 23.25 MB
Format: PDF, ePub, Docs
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The materials technologies based on photocuring are gaining momentum, and this will be the first book to provide an in-depth focus on the subject.

Photoinitiated Polymerization

Author: Kevin D. Belfield
Publisher: Amer Chemical Society
ISBN: 9780841238138
Size: 77.44 MB
Format: PDF
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Photoinitiated Polymerization is divided into five sections. Free radical photopolymerizations command most of the interest and activity within the field and thus is discussed first. The second section discusses kinetic studies of the mechanism of free radical polymerizations. The third section covers cationic photopolymerizations, which along with free radical polymerizations, are being used in many industrial applications. The fourth section is devoted to recent developments in novel photopolymeriztion chemistry. This section describes new photobase generators, developments in monomers, oligomers and templated polymerizations of liquid crystal polymers. Finally, the fifth section portrays new and emerging applications for photopolymerizations.

Photoinitiation Photopolymerization And Photocuring

Author: Jean-Pierre Fouassier
Publisher: Hanser Gardner Publications
ISBN: 9781569901465
Size: 66.55 MB
Format: PDF, ePub
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This state-of-the-art review explains the various aspects of a photopolymerization reaction, and the current and potential applications of photocuring: coatings, paints, adhesives, graphic arts, microelectronics, optics, medicine, stereolithography, laser writing, and more.