|
Calcium being an auxiliary drier, has little drying
action in itself but is very useful in combination
with active driers.
In vehicles that show poor tolerance for lead,
calcium can replace part of the lead with a larger
amount of calcium to prevent the precipitation of
the lead & maintain drying efficiency. Calcium is
also useful as pigment wetting & dispersing agents &
help to improve hardness & gloss & reduce "Silkins".
When ground with drier adsorbing pigments, Calcium
minimizes loss of dry by being preferentially
absorbed.
|
