Knowledge base

A new type of environmentally friendly, Novel low viscosity, solventless epoxy compositions have been developed for coil coating appilcations. The coatings can be cured on a high speed, low dose electron beam production ilne. Coatings can be clear or pigmented, used for both indoor and outdoor on metal, glass, plastic or wood surfaces. Alternativel

There are two UV curable silicone release systems on the market. Both are solventless and produce release coatings without the use of heat, but differ by their underlying chemistries. One is based on silicone acrylates and cures via a free radical mechanism, while the other release system uses epoxy silicones and cures in the presence of cationic i

For several years DuPont Powder Coatings has been producing and selling UV curable powder coatings for commercial use on MDF furniture and PVC flooring, and in doing so offering unique advantages to our customers. Our continuing work aims to further expand the UV powder technology with new and better formulations for our customers. Applications wit

The UV/EB Acrylate Resins Sector group of CEFIC has created a guide to the classification andlabelling of UV/EB Acrylates. This guide is a direct response to the voluntary commitment of thechemical industry to improve continuously in all aspects of health, safety and environment, theperformance of its processes and products and to communicate openl

The increased pressure to reduce VOC levels in surface coatings and the constant improvements required in coating properties continues to drive the growth of UV technology. The dispersion and stabilisation of pigments in such systems can be problematical. Often the oligomer and monomers employed in the formulation do not provide satisfactory pigmen

 Maleimide functional oligomers (MIRO) have been synthesized and evaluated as photoinitiating oligomers. Preliminary formulation work was performed in comparison to an acrylated photoinitiator and a benzophenone/tertiary amine package in a standard overprint varnish. Results for this work will be presented and discussed.

UV curing systems for the graphic arts are dominated by acrylate chemistry, which accounts for as much as 95% of the total radiation curing market. Although there is a number of niche alternative curing technologies, by far the most important is cationic curing. This has been known for at least as long as free-radical acrylate chemistry, but its us

An investigation of the scratch formation in UV cured coatings by a combination of nanoscratch,nanoindentation and optical microscopy provides a guide for an optimized design of such coatings when scratch resistance is desired. As a first and sensible guide, the choice of the proper formulation and the viscoelastic properties of the coating is esse