Zirconium is a most useful & efficient auxiliary drier.
Zirconium like lead serves as a through drier & is generally used
in combination with Cobalt, Manganese & Calcium. Unlike Lead,
Zirconium is a poor pigment wetting & dispersing
agent.
Zirconium is an active cross-linking agent & as such improves
hardness of stoved films as well as their adhesions.
Zirconium is not as effective in Phenolic resin based media it is
recommended as a catalyst for epscy esters. Use
of Lead driers in combination with Zirconium is to be avoided totally.
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