Ultraviolet curable coatings

Polymers can also be used to manufacture lenses and screens for projection television systems. These are most conveniently made from PMMA, or combinations of glass and PMMA, to counteract the high thermal expansion of the polymer. The use of ultraviolet curable coatings for lens replication and protective layers is widespread, and these systems are based on diacrylate or dimethacrylate monomers mixed with photoinitiators such as... 

D. C. Armbruster, "Advancements in Adhesion of Ultraviolet Curable Coatings," Technical Bulletin of Celanese Chemical Co., Dallas, Texas (January 1981). 

Photoplas, Ultraviolet curable coatings. Red Spot Paint Varnish Co. 

Figure 7.1 HSG has pioneered the commercialization of ultraviolet-curable hybrid glass protective coatings. 

Discuss typical ultraviolet-light curable coating compositions by free-radical and by cationic mechanisms. 

N. Jiratumnukul and R. Intarat, Ultraviolet-curable epoxidized sunflower oU/ organoclay nanocomposite coatings ,/AppZ Polym Sci, 2008,110, 2164-7. 

Safe Handling and Use of Ultraviolet/Electron Beam Curable Coatings," National Paint and Coatings Association, Washington, DC (1980). 

Lower VOC Radiation-Cured High Solids Coatings Radiation-curable coatings include high-solids materials that are formulated to be cured by ultraviolet (UV) and electron beam (EB) techniques. While their current use is at a much lower level than powder... 

Other materials used for electron beam and ultraviolet curable wire coatings are mentioned in Ref. Many recent applications can be found in the patent literature. A few examples are given in Refs. 

Majof silicone suppliers have been developing radiation-curable coatings for some time now the solventless systems lend themselves to this approach since all the space radiant energy can be directed at the polymer system for curing, and none wasted for solvent evaporation or in the substrate. The energy source referred to may be either ultraviolet or electron-beam radiation, and the objective is a very rapid zero-temperature controllable cure, with much of the control occurring through the intensity of the source. 

DPC is an adaptation of DSC which involves the use of an ultraviolet or visible light source to study the behaviour or photoreactive systems and has specific application to light curable coatings, films, inks, adhesives and dental materials. In particular, it can be used to study the effect of different initiator systems on the cure behaviour of these products, and to investigate the influence that parameters such as the other additives in the products and the cure conditions have on the cure rate etc. The technique is therefore particularly useful for studying the curing behaviour of coatings and inks. 

Ultraviolet Photoinitiators. Photoinitiators are used in increasing volume for a multitude of appHcations. The most important of these are in the formulation of uv-curable inks and in the production of coatings on vinyl flooring, wood, and electronics components (28,29). The most common types of photoinitiators are phenone derivatives, for example, acetophenones and hen 7ophen ones (30). 

Such sol-gel derived and ultraviolet (UV)-curable hybrids afford enhanced corrosion and mechanical protection of fibres compared to standard polymer coatings used by the fibre optics industry. These coatings are hard, transparent and impossible to strip since they become intimately bonded to the fibre surface during curing. 

Wolf et al. (3) prepared coating compositions using hydroxylamine esters, (II) and (III), that were curable by thermal and ultraviolet radiation. 

The ultraviolet curing of Inks and coatings has also received new attention. The renewed Interest In curing Inks has been Influenced by ecological and economic considerations.. The Inks can be formulated as solvent free systems which are sensitized to mercury 3650A irradiation. The curing energy is only a fraction of that needed with heat curable systems. 

Fefferman, G. B. "Using Ultraviolet Radiation Curable Resins for Printed Circuit Coatings", 2nd International Conference on Radiation Curing, Cincinnati, Ohio, May 1975. 

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