Knowledge base

Dendritic, polymers are,a new' ciass of polymer, characterised by: a'den'sely branched backbone and a large number of reaetive groups. 2 main characteristics of such a structure is the lack of entanglements and the low hydrodynamic volume resulting in a lower viscosity than Iinear 'or branched analogues: De.ndritic polymers have already shown speci

UV curable maleimide/vinyl ether blends were discussed in literature during the last years. Results ofbasic research were published which mainly contained RTIR spectroscopy, differential photocalorimetry, and the mechanism of radical formation. Partially, these results indicated high reactivity and low sensitivity to oxygen inhibition. Therefore, U

 Rapid and entire curing of thin films is still a challenge in modern coating industry. Since numerous new applications are developed regularly, formulations have to be adapted to give optimum performance. Selection of type of resin influences macroscopic characteristics of the cured formulation. Mechanical and physical properties such as hard

This paper describes how ultra-fine polyamide powders can be used to reach a balance of desiredproperties in UV-curable industrial coatings. To illustrate this, viscosity of the UV system, radiation curing modification, gloss control, coating's friction, additives dispersion within the coating and abrasion resistance were compared for formulations

RadTech International North America (RTNA) has adopted the following government affairs policy statement: UV/EB teéhnology offers end users of inks, coatings, adhesives and related applications a powerful option to comply with requirements of reduced emissions. However, RadTech recognizes that UV/EB is not a universal solution arid does not recomme

This paper reports on investigations on the direct initiation of the photopolymerization of acrylates by irradiation with short-wavelength monochromatic UV light using the 222 nm emission of a KrCI excimer lamp. The reactivity of various commercial acrylates was studied by real-time FTIR-ATR spectroscopy. Laser photolysis experiments and accompanyi

 The surfaces of various polymers were modified by UV irradiation in the presence of gaseous hydrazine. In the case of polystyrene (PS) and poly(2-vinylnaphthalene) (PVN), nitrogen containinggroups 2 I ) were attached onto the surface as evidenced by FTIR and XPS. The hydrophilicity increased significantly as shown by contact angle measurement

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