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>Catalytic efficiency of zerovalent iron compounds as paint driers compared with conventional substances: The use of ferrocene and other iron compounds as driers in autoxidative paint systems at ambient and elevated temperatures.
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Catalytic efficiency of zerovalent iron compounds as paint driers compared with conventional substances: The use of ferrocene and other iron compounds as driers in autoxidative paint systems at ambient and elevated temperatures.
Novel paint driers based on iron co-ordination complexes wereudinvestigated for use as stoving finishes in oil-based coatings. Cisud9, cis 12-octadecadienoic acid was employed as a model vehicle becauseudof its high drying capacity. Iron compounds generally have lowudcatalytic efficiency at low temperatures which however improve withudrises in temperature.udThe catalytic efficiency of some iron compounds was comparedudwith those of some conventional driers at room temperature; 60 C,ud80 C and 1200 C. To make the results comparative, equal weights ofuddrier (0.05%) metal were employed in one series of experiments. Inudanother series, a much higher concentration (0.25%) metal based onudthe weight of 9,12-octadecadienoic acid was employed.udEqual weights of drier combination(s) and variable drierudweights were examined to determine synergism or antagonism in theudautoxidative systems.udMaximum oxygen absorption, changes in iodine and peroxideudvalues were monitored to determine a comparative catalyticudperformance of the driers at the reaction temperatures used.udThe reactivity of iron co-ordination complexes was found toudbe influenced by the organic compound with which the iron is chelated.udZerovalent iron complexes can be employed as high temperatureuddriers.udFor convenience some common names have been used for major chemicalsudof importance in this work, e. g.,udLinoleic acid; cis 9, cis 12-octadecadienoic acid.udFerrocene; dicyclopentadienyl iron.
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