MANUFACTURERS AND EXPORTERS OF LEAD OCTOATE

Lead is a through drier & is always used as active or top drier. It promotes hard & through drying throughout the film & also increases flexibility, toughness & durability of the film. Lead drier can give rise to precipitation in the film as, Lead Octoate reacts with unreacted pthalic anhydride of alkyd resin, which could form Lead Pthalate, which may cause haziness & loss of gloss. In order to avoid this it is advisable to add Calcium Octoate first which acts as emulsifier & improves the pigment dispersing & wetting properties. In exterior paints & floor finishes Lead is used along with Manganese to produce tough & hard film. It is also used in Polyurethane finishes as auxiliary drier. Lead drier improves the drying time of double boiled linseed oil. Lead Octoate also improves the water & salt resistance of the film making it useful to rust preventive coating.
Lead in combination with cobalt & calcium are suggested, particularly for long oil alkyds lead is the most important drier. However some of the problems connected with lead driers such as sulfur staining & reaction with polybasic acids are overcome by inclusion of calcium drier. As lead is toxic in nature its usage toys & edible film packaging is to be avoided. The most widely used metal that could replace lead driers are Zirconium & Strontium.