Coatings, electron beam cure

Ultraviolet Electron Beam Curing Formulations for Printing Ink, Coating and Paints, 3 Vols., SiTA Technology, London, 1991. 

Sulfur chemistry [29] has also been used to crosslink rubber/resin PSAs, although the use of elemental sulfur itself yields tapes that can stain substrates. Other patents exemplify the use of typical rubber vulcanizing chemistry such as Tetrone A , dipentamethylenethiuramtetrasulfide, and Tuads , tetramethylthiu-ram disulfide [30], or zinc butyl xanthate [31] for this purpose. Early art [32] also claimed electron beam curing of both natural rubber and other adhesives that were solvent coated on tape backings. Later references to electron beam curing... 

Both u.v. radiation and electron beam curing are best suited to flat or nearly flat objects, because the beams are directional and shielding must be avoided. Electron beam curing also requires the coating to be in an oxygen-free gaseous atmosphere. Both techniques cure in a fraction of a second and are suitable for fast, high-volume production lines. 

Powers, H. R., "Electron Beam Curing for Coil Coatings, A Study of The Energy Requirements". Sherwin-Williams Company, 1975. 

Oraby, W., and Walsh, W. K., "Elastomeric Electron Beam Cured Coatings Structure-Property Relationships. Part I. Oligomer Structure," J. Appl. Polym. Sci., in press. 

The electron beam curing of coatings has for some time attracted a great deal of attention since It Is claimed that coatings can be fully cured In a fraction of a — second. The coatings are primarily based on the cross-linking of acrylic or epoxy resins In a polyurethane or polyester base (l.e., modified paints). 

Electron beam curing has reached fully commercial stages In the USA and Europe.— Protective coatings have been electrocured on automotive finishes, wood products, plastic products, and structural metals. 

A facile method by which organic thin films may be readily coated upon substrates employs the electron beam curing of materials such as of monomeric and/or oligomeric acrylates and methacrylates. The perfluorinated acrylates 2-(N-butylperfluorooctanesulfonamido)ethyl acrylate (BFOSA), 2-(N-ethylperfluorooctanesulfonamido)ethyl acrylate (EFOSA), and perfluoropolyether diacrylate (PFEDA) were obtained from the 3M corporation, St. Paul, Minnesota 1,6-Hexanediol diacrylatc (HDODA) was obtained from Interez, Inc., Louisville, Kentucky. 

Thin films were spin-coated onto virgin, optically flat NaCl disks or flat, polished Si wafers and electron beam cured at, 5-lOMrad under Nj. The oxygen content in the irradiation chamber was equipment used for electron beam curing was a CB 150 Electrocurtain Processor (Energy Sciences, Inc., Woburn, Mass.) that permits the exposure of. samples in the presence of air or an inert atmosphere like Nj. A scries of experiments were performed to determine the optimal ab-sorbed do.se for curing this was determined to be about 10 Mrads. 

Kumar, V, Bhardwaj, YK, Goel, NK, Francis, S, Sarma, KSS, Dubey, KA, Chaudhari, CV, Sabharwal, S. 2008. Coating characteristics of electron beam cured bisphenol A diglycidyl ether diaciylate resin-co-aliphatic urethane acrylate resins. Surf Coat Technol 202 5202-5209. 

Kumar, V, Goel, NK, Francis, S, Bhardwaj, YK, Varshney, L. 2012. Hybrid organic/inorganic nanocomposite coating by electron beam curing process, Proceedings of the 18th International Symposium on Thermal Analysis, Mumbai, India, pp. 269-271. 

O O low molecular mass, acrylate group content 1000- 5000 UV and electron-beam curing paper/plastic coatings, printing inks... 

Formula CH HOCOCH CH OCOCH CH CH CH CH OH Uses Adhesion props, for UV and electron beam curing as protective coating for metal, plastics, wood, and paper as acrylic adhesive for metal, plastics, PC, acrylic sheet, and paper Trade Names SR 495... 

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