Metal
carboxylate stabilizers must be chosen which are appropriate to
the PVC type, the numerous formulation variations, including the
use of plasticizers and fillers and the processing techniques such
as calendaring, extrusion, injection molding, plastisol processing.
Additionally, the demands made to the end product, for example high
transparency, weathering stability, resistance to discoloration
owing to sulphur compounds, plate out and fogging control, ease
of printing and welding must be considered. This is the reason why
so many different metal carboxylate stabilizers are in the market,
and why they are all dissimilar. |