Knowledge base

One of the biggest difficulties encountered when formulating UV curable matt coatings withmatting powders is rheology control. Because UV systems are normally 100% reactive, there is minimal loss of volume on application. With 100% UV curable systems, 10% matting powder in the liquid means 10% in the solid film. There is no effective increase in po

Thiol-ene photopolyrnerization technology has been known for mans' years and has been the subject of much 13 since the polymerization mechanism was first proposed by 4 in 1938. Despite their promise as photopolymerizable materials for coatings , this market has been dominated by acrylate photopolymerizations. More recently, there has been a renewed

Radiation curing including ultra-violet (UV) and electron beam (EB) curing technology is now being increasingly used in various sectors of applications, mainly in the coating industry, graphic arts, and microelectronics, replacing conventional thermally cured solvent-based coatings, inks and adhesives. This is due to their distinct advantages, such

Glass fiber reinforced, or composite plastics are attractive alternatives to conventional sheet metals in automobile construction. The common Sheet Molding Compound (SMC) is the main example. It is composed of an unsaturated polyesters with additives, mineral extenders and the glass fibers. The use of this material has fluctuated as the automotive

It is not since today that we know the application of UV-curing under oxygen-reduced, inert conditions. For the cross-linking of silicones manufactured by Goldschmidt it is imperative to keep the residual oxygen content below 50 ppm. Particularly by the end of 1999, the demand for UV units running under oxygen-reduced conditions increased for the f

UV curable silicones are a highly specialised class of compounds that is known in the industry for more than 17 years: UV curable silicones can be applied as release coatings on paper and plasticsubstrates. Typical applications for the compounds presented in this paper are release coatings for self adhesive labeistock, which accounts for approx. 70

  UV powder has the potential to be one of the most important powder technologies for the future. After several years of development efforts it has been possible for DuPont Powder Coatings tocommercialise the UV powder technology in Europe. From the very beginning in 1993 we believed in the so we worked on the project until we were succes

Improvement and further growth of radiation cured coatings in exterior applications dependson the development of inherently better performing binders. For the building and automotiveindustries these binders should combine excellent weathering performance with other moreand more stringent requirements. An understanding of coating degradation is a fi