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 Polymenc pseudocrown ether networks were formed in situ by the photopolymerization of poly(ethylene glycol) diacrylate (PEGDA) / transition metal complexes. These metal : monomer complexes led to near circular conformations of the monomers in which the two reactive endgroups of a single monomer are brought into close proximity; thus, the prob

The application of ultraviolet )) curing is a growing field in furniture coating, because this technology features outstanding properties of use and enables the manufacture of surfaces, which meet the quality requirements regarding chemical and mechanical resistance (Garrat, 1996). The photoinitiator is an essential ingredient of UV-curable systems

For many years, offset, letterpress and flexographic printing have been important techniques used for packaging printing, label printing and printing on a variety of other substrates.The appropriate printing technique is selected according to the specific area of use and the quality requirements related to it. In this regard, flexographic printing

Although the favourable technological properties and the high profitability of UV-curablepaint systems are well known in various industrial applications, such as wood, foil andplastic parts coating, UV technology has not yet entered the automotive OEM coatingindustry. This is all the more surprising since the demand of the automotive industry forim

Quenching of imidazoyl radical (1m) formed in photoinitiator systems comprisingan aminostyryl dye and a radical generating reagent by a 2-mercaptobenzothiazole(MBT) :aminostyryl-dye; 2- p-(diethylamino)styryl] naphtho 1,2-d]thiazole (NAS),radical generating reagent; 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenyl- 1, 1'-bi- 1Himidazole(BI) in a poly

The significance of radiation curing as a basis of almost emission-free coating and printingprocedures has been rapidly growing over the past years. Although VOC reduction and avoidance is of primary importance for environmental protection, there is a number of further reasons for UV-curing technology that can't be ignored any more by current and f

Photochemical behavior of 0-carbamoyloximes as photobase generators was investigated in companson with 0-acyloximes. Acetophenone 0-phenylcarbamoyloxime (PCApO) and acetophenone 0- cyclohexylcarbamoyloxime (CHCApO) as 0-carbamoyloximes and acetophenone 0-phenylacetytoxime (PaApO) as the 0-acyloxime were used. In their phototysis at 254 nm , the ord

The increasing demand for UV coatings on three-dimensional (3D) objects, e.g., in the area ofplastic and metal parts for the automotive industry, represents a new challenge. In conventionalapplications, e.g., in the wood or printing industry, the parts are mostly two-dimensional and flat.Such parts can easily be cured nowadays by radiation cunrig.T