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This report describes the first phase of a full technological
evaluation of a novel drier based on manganese and 2,2-dipyridyl.
The objective was to see if this drier could be used as a
replacement for drier systems based on cobalt and lead.
The drier was evaluated in over 30 coatings (primer,
undercoats and topcoats) which were representative of commercial
production in the early 1980's.
The evaluation was carried out on the drier free commercial
paint after addition of the novel drier. Fully formulated
commercial paints served as the controls. The testing schedule
involved measuring drier performance at ambient and at low
temperature as well as determining colour, storage stability and
resistance to natural and artificial weathering.
The results of the tests for room temperature drying, storage
stability and gloss and chalking after artificial weathering
showed that the novel dried paints were fully comparable with the
controls. Tests for low temperature drying and colour showed that
approximately half the paints tested were better than or
comparable with the controls.
The final phase of the evaluation is described in TR/1/89.
Further Information
If you are interested in this, or any other project, please contact Richard Holman.
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