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Driers are added to air drying paints to accelerate the hardening of spread coating. For decades cobalt octoate has been the most widely used drier because of its good performance at ambient temperature. Recently, several reports describing possible carcinogenity and genotoxicity of cobalt and cobalt salts, such as cobalt sulfate in aerosols, have appeared. It is necessary to reduce the amount of cobalt compounds in coatings industry. Present study deals with the possibility of using ferrocene and its derivatives as driers for air drying coatings. We concentrated particularly on the synergic effect between these metallocene complexes and the cobalt drier. In the first step the kinetics of autooxidation by FTIR spectroscopy in model systems was investigated. Then the metallocene complexes were applied together with cobalt drier to alkyd resin, where their influence on hardness of spread coatings was examined.

We describe preparation and characterization of multilayer planar systems based on alternating chalcogenide As–Se and polymer polyamide-imide (PAI) or polyvinyl-butyral (PVB) thin films. We deposited films of thermally evaporated As 33 Se 67 chalcogenide glass periodically alternating with PAI or PVB films. Fifteen layers of As – Se + PAI system and 17 layers of As – Se + PVB system were deposited. The film thicknesses were approximately 100 nm for all of the film types. Polymer film thicknesses were calculated from profilometric measurements performed by an atomic force microscopy. Optical properties of prepared multilayers and also As–Se, PAI and PVB single layers were established using UV–vis–NIR and ellipsometric spectroscopies. Both, As – Se + PAI and As – Se + PVB multilayer systems, exhibited the reflection (stop) bands centered near 830 nm. The bandwidth of reflection band of As – Se + PAI multilayer was 90 nm while bandwidth of As – Se + PVB system increased to 150 nm because PVB films had about 0.2 lower refractive index. A new possibility for the application of chalcogenide thin films appeared as high refractive index materials suitable for fabrication of optical elements (reflectors) for near-infrared region. Changing the films composition and thickness, multilayer systems with tailored position of stop band could be designed and prepared.

The objective of this work was to identify the anticorrosive efficiency of synthesised, core pigments. Epoxy ester based coatings containing the synthesised pigments were formulated. To test the anticorrosion properties of the coatings, accelerated corrosion tests were carried out in the environment of condensed water, of NaCl mist, and of condensing water and SO2. The synthesised core shell pigments have good anticorrosion efficiency in an epoxy ester coating. The synthesised pigments do not contain any environmentally harmful substances.

The present paper shows that soluble alkaline silicates, for example sodium silicate, act as flash rusting inhibitors, while aqueous dispersion binders were used in primer paints. Sodium silicate, potassium silicate and lithium silicate were studied for this purpose. Their inhibiting properties were described with the aid of a scanning method, determination of metal weight loss and SEM. Sodium silicate was identified as a very good flash rusting inhibitor for applications in styrene acrylate water borne paints.