Knowledge base

The first section of this paper describes a new procedure for UV powder coating of a (heat sensitive) porous substrate. The method comprises a) preheating the substrate, b) applying the powder onto the preheated substrate and c) curing the coating, with the proviso that after step a) and before step c) the temperature of the substrate should not in

We live in a finite world. Ultimately, there is no way around production and consumption patterns that are sustainable. Ultimately, customers, engineers, managers and politicians will show a strict priority for the respect of nature and the environment. To be sure, global competition for highest cost-benefit ratios leaves little breathing space for

A new development in photoinitiators' technology is the availability of difunctional derivatives. Due to their chemical structure, these photoinitiators combine reactivity similar and in some cases better than the monomeric ones with the solution of the unwanted characteristics of conventional products, such as the migratability and release of smel

The UV-radical polymerisation process can be improved under oxygen reduced conditions in double respect: With obviously reduced UV-power it becomes possible to print extremely heat sensitive substrates in UV-sheetfed machines. With UV-power, which is todays state-of-the-art, the working under oxygen reduced conditions offers possibilities to the fo

All industrial business has an impact on our heaJth and environment in some way or other. Coatings are no exception. The main purpose of the coatings is to contribute with a positive environmental impact by adding aesthetic value and protecting the surface. We all have a responsibility for our products' impact on the environment during their whole

  All the reactants were obtained from Aldrich. The monomer was purified by column chromatography before use. Reaction rate profiles and conversions were determined by isothermal differential scanning calorimetry. Throughout the experiments the DSC unit was operated isothermally at 40 ± 0.01°C. The 10-mg samples were polymerized in open a

A broad and novel array of UV-curable pressure-sensitive adhesives from Henkel now combine many of the virtues of familiar water- and solvent-based adhesives formulations plus the advantages of hotmelts.The principle of UV curing has been known since the Seventies. However, it was not until theintroduction of new raw materials, in the mid-Nineties,