Knowledge base

In recent years vinyl ethers (VE' s) have received increasing attention as materialsthat can be used to produce UV/EB curable coatings (1). Vinyl ethers are used in anumber of demanding photocure applications that range from inks and adhesives tostereolithography (2). Vinyl ethers exhibit desirable characteristics such as: fast cure,toughness and l

Silicone release coated papers and films provide "easy release" surfaces for awide variety of "sticky" applications: label stock, adhesive tapes, personal hygieneproducts, building and construction materials, protective liners, and many others.These silicone release coated liners provide a non-adhering surface upon whichadhesive materials may be co

It is well known that very high reliability capacitors can be made from rolls of zincmetallized polypropylene film. These capacitors are often used for AC and DCapplications from about I OOV to over 1000 volts. For high reliability AC applicationsthese capacitors are often encased and at least partially impregnated with a dielectricfluid. This cons

The graphic arts industry has an ongoing need to modify and control therheology of energy curable inks. Rheology modifying (RM) resins allow meindustry to enhance rheological properties of lithographic, letterpress and screenink printing processes which currently incorporate silica, talc and other additives.Increasing rheological body significantly

Many attempts to produce a general 'UV Cure Meter' have been tried and mosthave failed. The next best thing is to move back one step in the process andensure that :-a) there is sufficient irradiance (UV) reaching the chemistry,b) the chemistry is correctly formulated and stable.All UV lamp systems output change with time. This is as far as the proc

Sulfonium, iodonium or ferrocenium hexafluoro phosphates or antimonatesalts are well known to be highly efficient as photoinitiators forpolymerization of organic or silicone epoxides . The presence of heavymetal like antimony still present after curing is a major drawback for manyapplications involving food contact coatings . The replacement byphos

Recently, as a consequence of environmental legislation, there has been an increasingtrend towards the use of coating systems based on a small amount ofsolvents. This requirement is fulfilled to a particularly high degree by radiation curablepaints, lacquers, varnishes and coatings which can be formulated without theuse of conventional solvents. Wi

Traditional, thermally cured, coil coatings are very flexible paints with good abrasionresistance and a designed in durability consistent with the end use. The flexibility andabrasion resistance are very necessary during the post forming operations when the metalsubstrate is bent, sometimes quite severely, by high speed processing machines.Although