Knowledge base

The present report evaluates the production of solvent-free acrylic pressure-sensitive adhesives (PSA5) with a twin-screw extruder. New applications and technical specifications continue to stimulate the development of new methods for the radical polymerization of non-solvent acrylate, and include the synthesis of 100% acrylic systems by polymeriza

The technology of Radiaton Curing is well established in the field of clearcoats. This technology is unique due to the combination of features like curing within a fraction of a second, the possibility to formulate coatings without any organic solvent and the outstanding quality of these coatings. Nonetheless, in order to enter into further market

In May 2003, DG Enterprise and DG Environment of the European Commission published their draft text for the new chemicals legislation on the internet for public consultation. The European chemical industry supports the political objectives of the new chemicals legislation as stated in the White Paper. Of particular importance for industry is to ens

We have now entered the third millennium and one of the most widely discussed and pressing topics of the moment, for which an immediate response has to be found, is the need to reduce environmental pollution. Finishing operations in general are not the only source of pollution to the atmosphere and water systems but they are one of the most importa

Laminating Adhesives can be generally classified in to three broad types depending on the demands the packages are expected to meet. They can be grouped as high, medium and standard performance systems. In a very general sense, high performance adhesive applications represent the most demanding like retort packaging and often involve aluminum foil

Urethane acrylates as binders for UV curable coatings offer an excellent property profile combining toughness, chemical and abrasion resistance with flexibility and, for the aliphatic types, outdoor resistance. Most of the excellent properties can be attributed to the hydrogen bridge bonding of the urethane groups. However, the same hydrogen bridge

Powder coatings are very attractive, environmentally friendly alternatives to liquid finishes since they are VOC-free. Resins that cure under UV light have already been developed for applications in powder coatings. Most studies deal with acrylic materials or unsaturated polyesters for free radical mechanism and epoxy materials for cationic mechani

In the present work, the photopolymerization kinetics has been studied by real-time infrared spectroscopy (RT-FTIR) and in situ dielectric analysis (DEA) . We were able directly correlate the dielectric properties of resins studied and the monomer conversion during the irradiation time. By monitoring changes in the electrical properties of the UV c