Chemical curing of alkyd resin catalyzed by benzoylferrocene: Performance, kinetics, and thickness effects

Honzı́ček, Jan; Vinklárek, Jaromı́r

doi:10.1002/app.46184

Cited by 12 publications

(8 citation statements)

References 38 publications

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“…Nevertheless, their extensive use could be restricted considerably in near future owing to their recently recognized carcinogenic properties [4]. This situation stimulates researchers and paint producers to search for new alternatives based on coordination compounds of less toxic metals such as manganese [5], iron [6][7][8], or vanadium [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Performance of Manganese(III) Acetylacetonate in Solvent-Borne and High-Solid Alkyd Formulations

Matušková

Honzı́ček

2020

Materials

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This paper reports a strong drying activity of manganese(III) acetylacetonate. It is documented on several solvent-borne and high-solid alkyd binders. Solubility problems, which often appear upon application of new primary driers, were overcome by use of dimethyl sulfoxide. Interestingly, intense coloration of the drier does not influence the transparent paint films due to in situ reduction to manganese(II) as evidenced by colorimetric measurements. Kinetics of the autoxidation process was investigated by infrared and Raman spectroscopy. For selected formulation, the effect of film thickness on through drying was estimated by infrared spectroscopy using attenuated total reflection sampling technique.

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Section: Introductionmentioning

confidence: 99%

Performance of Manganese(III) Acetylacetonate in Solvent-Borne and High-Solid Alkyd Formulations

Matušková

Honzı́ček

2020

Materials

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“…Nevertheless, global demand for their replacement is constantly increasing due to ecological reasons [8,9]. Various driers 3 based on vanadium [10][11][12][13], manganese [14][15][16] and iron [17][18][19][20][21], reported in literature, exhibit promising properties in alkyd formulation or liquid model systems (e.g. methyl linoleate).…”

Section: Introductionmentioning

confidence: 99%

Effect of primary driers on oxidative drying of high-solid alkyd binder: Investigation of thickness effects by mechanical tests and infrared spectroscopy

Charamzová

Vinklárek

Honzı́ček

2018

Progress in Organic Coatings

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Catalytic activity of four primary driers was investigated in high-solid alkyd binder modified with tall oil fatty acids. The drying activity was established by mechanical tests. Infrared spectroscopy was used for detailed investigation of chemical changes during the autoxidation process. Due to strong thickness effect, the infrared 2 study was performed using attenuated total reflectance (ATR) technique, which measures spectra of a thin layer from the interface sample/ATR crystal (down surface of the sample). Coatings of 30 µm-wet thickness were found to be enough thin to be considered as a homogenously dried bulk with negligible effect of oxygen diffusion. It makes the 30 µm-layers very suitable for determination of kinetic parameters of the autoxidation process. For the first time, ATR-IR experiments on several samples of the same composition but different film thickness were used for detailed investigation of the thickness effect. Two well-distinguished modes of film-formation were observed in studied drier/binder systems. Front frontforming drying occurs when the autoxidation is fast and air-oxygen diffusion is slower than its consumption. In extreme case, the film-formation process is practically ceased because impermeable skin is formed and the coating is not through-dried for very long time. The second mode, homogenous drying, is observed when autoxidation is slow and oxygen consumption is not fast enough to establish oxygen gradient in the coating.

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“…5,6 In the last decade, our research group has focused on investigation of the air-drying process and a search for new alternatives of cobalt-based driers. We have described several ferrocene derivatives with improved activity in solventborne formulation 7,8 and iron bispidine compounds with improved solubility in nonpolar solvents. 9,10 Nevertheless, our main aim involves the application of vanadium compounds.…”

Section: Introductionmentioning

confidence: 99%

Oxidovanadium(V) dithiocarbamates as driers for alkyd binders

et al. 2020

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A series of oxidovanadium(V) dithiocarbamates were synthesized by the conventional synthetic procedure and characterized by analytical methods. Structures of two representatives were determined by X-ray diffraction analysis on single crystals. The initial screening of catalytic alkyd drying, performed on a commercial solventborne alkyd resin of medium oil length, revealed a promising activity of oxidovanadium(V) dithiocarbamates, which was further proved on several alkyd formulations including slow-drying highsolid binders. Kinetic behavior of the catalyzed autoxidation process, investigated by time-resolved infrared spectroscopy on a thin alkyd film, was found to be very different from commercial cobalt carboxylates. Appearance of oxidovanadium(IV) species upon the curing process was evidenced by EPR spectroscopy. Graphic abstract Oxidovanadium(V) dithiocarbamates were established as primary driers for solventborne and high-solid alkyd formulations. The kinetic behavior of the catalyzed autoxidation process, investigated by time-resolved infrared spectroscopy on a thin alkyd film, was found to be different from commercial cobalt carboxylates. Appearance of oxidovanadium(IV) species upon the curing process was evidenced by EPR spectroscopy.

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Chemical curing of alkyd resin catalyzed by benzoylferrocene: Performance, kinetics, and thickness effects

Cited by 12 publications

References 38 publications

Performance of Manganese(III) Acetylacetonate in Solvent-Borne and High-Solid Alkyd Formulations

Performance of Manganese(III) Acetylacetonate in Solvent-Borne and High-Solid Alkyd Formulations

Effect of primary driers on oxidative drying of high-solid alkyd binder: Investigation of thickness effects by mechanical tests and infrared spectroscopy

Oxidovanadium(V) dithiocarbamates as driers for alkyd binders

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