Knowledge base

The photopolymerization of Vinyl acrylate (VA) has been investigated with respect to the self-initiating efficiency. VA initiated polymerization of conventional acrylates exhibit fast rates of polymerization and high degrees of conversion are obtained. Herein we report a comprehensive real time infrared (RTIR) investigation of the reaction kinetics

The development of high power short wavelength light emitting diodes (LED) in the late 90s created the potential of a solid state ultraviolet/visible curing source. The benefits of LEDs are low heat, portability and low power consumption. These advantages are particularly attractive for the curing of various adhesives, inks, and coatings in applica

Due to the continuous trend in more stringent safety regulations, search for polymers with flame retardant (FR) properties is important. In the case of coatings (radiation curable or conventional), their flammability can contribute to the fire propagation. In some wood coating applications, significant level of fireretardancy is required. In this p

Cationic UV coatings frequently contain cycloaliphatic epoxides and polyols. Polyols are generallyused to improve coating flexibility and toughness. A practical limitation when using polyols is that theconcentration of hydroxyl equivalents can not be more than about one half the concentration of epoxideequivalents. Polyol concentrations that are mu

Powder coating and the benefits associated with this method of finishing have been profitable utilised for decades. The technology involved and the powder used have been developed and refined to the point where, today, more or less any product that can be powder-coated is treated in this way, for example, refrigerators, washing machines, bicycles a

Excimer lamps as monochromatic UV sources with an intense short-wavelength emission open up new possibilities for a photoinitiator-free initiation of the acrylate polymerisation. The reactivity of. various neat acrylates after excitation with 222 nm light from a KrCl lamp was studied by real-time FTIR-ATR spectroscopy and in some pilot scale trials

Reinforced clear coats were prepared using nanosized silica and alumina particles in UV/EB curable acrylate formulations. For a firm embedding of the oxide nanofillers via covalent bonds to the network acrylates their surfaces were modified by polymerization-active trialkoxysilanes, e.g., methacryloxypropyltrimethoxysilane and vinyltrimethoxysilane

One of the most important challenges these days for the Industrial Wood Finishes manufacturers is the development of new products which have to be compliant with the new regulations concerning VOC emissions. This target is especially difficult in the case of certain applications in which alternative technologies have problems to achieve the usual s