Oxovanadium(IV) 2-etylhexanoát jako sikativ pro rozpouštědlové alkydové pryskyřice

Abstract

Air-drying binders are well-established paints used in modern organic coating technologies. Alkyd resins modified with polyunsaturated fatty acids (e.g. linoleic acid, linolenic acid) are able to provide polymeric film without addition of any curing agents but this process is generally very slow. Therefore, the use of catalysts, socalled driers, is necessary for acceleration of the drying process and improvement of the physical properties of resulting polymeric film. This work was focused on the drying properties of oxovanadium(IV) 2-ethylhexanoate in the different solvent-borne alkyd binder. The several experimental methods as a film drying time, surface hardness determined by pendulum Persoz were used for determining drying activity of oxovanadium(IV) 2-ethylhexanoate. These experiments demonstrated an excellent drying activity for solvent-borne alkyd resin. Oxovanadium(IV) 2-ethylhexanoate exhibited great drying activity at considerably lower concentration than the commercial dryer cobalt(II) 2-etylhexanoate.Tato práce je zaměřena na sikativační aktivitu oxovanadium(IV) 2-ethylhexanoatu v různých alkydových pojivech. Pro určení aktivity tohoto komplexu bylo použito několik experimentálních metod jako jsou měření doby zasychání zkušebních filmů a měření relativní tvrdosti těchto filmů pomocí kyvadla Persoz. Tyto experimenty potvrdily velice dobré sikativační vlastnosti komplexu v alkydech různé olejové délky