Ultraviolet curable coatings formulation

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... 

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). 

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. 

Wang and Cheng reported preparation of ultraviolet light-curable resin for coating optical fibers. It consists of polydimethylsiloxane epoxy acrylate and polyethylene glycol urethane acrylate. To this were added in different proportions trimethylolpropane triacrylate to modify the properties of blends. After addition of a photoinitiator the choice formulation photo cured in 5 seconds. 

Tetrahydrofurfuryl alcohol (THFA) is used to prepare tetrahydrofurfuryl acrylate and methacrylate in transesterification reactions with lower acrylate esters. These reactive monomers are used in the formulation of ultraviolet light-curable adhesives, coating, paints, and printing inks. THFA is an effective coalescing solvent for latex paints and is used in epoxy resin formulations. The oleic acid ester of THFA is used as a plasticizer for vinyl resin products. The high solvency of tetrahydrofurfuryl alcohol for dyes permits higher dye... 

---