Novel paint driers based on iron co-ordination complexes were
investigated for use as stoving finishes in oil-based coatings. Cis
9, cis 12-octadecadienoic acid was employed as a model vehicle because
of its high drying capacity. Iron compounds generally have low
catalytic efficiency at low temperatures which however improve with
rises in temperature.
The catalytic efficiency of some iron compounds was compared
with those of some conventional driers at room temperature; 60 C,
80 C and 1200 C. To make the results comparative, equal weights of
drier (0.05%) metal were employed in one series of experiments. In
another series, a much higher concentration (0.25%) metal based on
the weight of 9,12-octadecadienoic acid was employed.
Equal weights of drier combination(s) and variable drier
weights were examined to determine synergism or antagonism in the
autoxidative systems.
Maximum oxygen absorption, changes in iodine and peroxide
values were monitored to determine a comparative catalytic
performance of the driers at the reaction temperatures used.
The reactivity of iron co-ordination complexes was found to
be influenced by the organic compound with which the iron is chelated.
Zerovalent iron complexes can be employed as high temperature
driers.
For convenience some common names have been used for major chemicals
of importance in this work, e. g.,
Linoleic acid; cis 9, cis 12-octadecadienoic acid.
Ferrocene; dicyclopentadienyl iron.
| Identifer | oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/3543 |
| Date | January 1985 |
| Creators | Agada, Otokpa C-M. |
| Contributors | Apperley, T.W.J. |
| Publisher | University of Bradford, Postgraduate School of Studies in Colour Chemistry and Colour Technology. |
| Source Sets | Bradford Scholars |
| Language | English |
| Detected Language | English |
| Type | Thesis, doctoral, PhD |
| Rights | <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-nc-nd/3.0/88x31.png" /></a><br />The University of Bradford theses are licenced under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/">Creative Commons Licence</a>. |
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