Knowledge base

The current work concerns using the Photo-DSC technique to study the rates of photoinitiator free copolymerisation of donor/acceptor pair involving N-vinylpyrrolidinone (NVP), an electron-rich donor and a water-soluble N-substituted maleimide (MI) in the presence of hydrogen donors, in order to evaluate their efficiencies as hydrogen donors. The pr

Vinyl ethers are well established as radiation curable materials exhibiting a wide diversity of chemistry 1]. A good selection of reactive monomers and prepolymers is commercially available. These materials possess several attractive features such as low toxicity and high reactivity. The cationic cure (both uv and eb initiated) of these materials i

       Surface coatings have two functions: to decorate and to protect. So that coatings perform these functions for as long as possible we to try to devise ways of minimizing the mechanical erosion towhich they are subjected. Radiation-cured systems have made big gains in the coatings market inrecent years. Today

Powder coating properties aredetermined to a great extend by the formulation and the cure conditions. This influence is even larger in the case of UV curable powder coatings, since the UV absorbance of additives and pigments directly affects the process of network formation. The effect of coating composition and layer thickness of the coating was s

Since many years, the goal of ink-makers is to improve the runnability and lithographic behaviour, dot gain, cure speed and odour for UV offset inks. But unfortunately, the formulation of UV curable printing inks depends on many variables both in ink making and in lithography process. One of the key properties of a good lithographic ink is its abil

During the last decade we observed an increasing scientific interest in fluid-dynamic effects caused by biological surfaces. It has been shown by Abramsom (1] and later by Barthlott and coworkers 2,3] that the well-known perfect cleaning of e.g. Lotus ( Nelumbo nucifera) leafs is caused by water droplets which are able to easily release impurity pa

A wide variety of radiometric instruments are now available for measuring the radiant characteristics of industrial and laboratory UV lamps. Relating these characteristics to the performance of a UV-cured product depends on how well the selected parameters match the critical factors of the cure process. Further, the distinction between process desi

     In recent years, cationic UV curing has become a well-established method in the coatings, inksand adhesives industries. Today, UV curing continues strong growth impelled by the generallyexcellent chemical resistance and mechanical properties of polymers produced by the UV cure ofsuch monomers as epoxides and vinyl ethe