Knowledge base

There is an increasing demand for new routes yielding monomers derived from biomass feedstock. Owing to the large variety of synthetic polymerization methods and associated chain growth mechanisms, several approaches are currently addressed [2] Biosourced monomers for step-growth or for chain polymerization can be obtained by various chemical or bi

The central concern of REACH is the safe use of chemical substances with regard to humans and the environment. For each substance the supplier has to determine the risks and to show that these risks can be controlled during the whole life cycle of the substance. That means that all the uses need to be known to the supplier necessitating an effectiv

The negative influence of oxygen on the radical polymerization process was investigated several times in the last years. Overcoming the oxygen inhibition is commonly done by a complete inertization of the radiation chamber with nitrogen or carbon dioxide. The system efficiency of the UV-curing process degrades by the application of large volumes of

The first description of a two-photon induced photopolymerization (TPIP) is about a decade ago. Since then, researchers are trying to improve this novel Additive Manufacturing Technology MT). Higher resolutions, faster writing speeds, improved processing windows, the possibility of using multiple exposure spots and so one, in order to push thi

Energy savings by the introduction of more efficient curing processes that use less energy is a constant theme for the coatings industry, and has high emphasis in automotive applications. Taking the case of two-component polyurethane (2K-PUR) coatings, the use of conventional catalysts, e.g. dibutyltindilaurate (DBTL), to accelerate the cross-linki

The radical step-growth addition reaction of thiols across the double bonds of -ene containingcompounds has garnered much attention in the scientific literature. Among the many interesting properties that these “click” reactions are noted for is self-initiation, i.e., the ability to photopolymerize without the need of photoinitiators or thermal cur

Different technologies have been developed and are widely used based on reactive adhesive systems, whereby the applications combine an easy handling of the systems with relatively low molecular weight materials providing good processing abilities and good wetting of porous materials. The demanding end properties such as bond strength and performanc

The overwhelming acceptance of the low voltage, low cost series of EB equipment has truly kept up with its expectation as the curing method of choice. Since its introduction in 2000 more than 125 of these types of EB systems have been sold with greater than 90 % application in packaging most particularly food packaging. They are used as follows: