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Strontium Octoate is the replacement of Lead Octoate, where Lead free Paint/Ink is required. It improves through drying in adverse effect like high humidity & low temperatures. Strontium seems to overcome the insufficient Zirconium performance. Also unlike Zirconium, Strontium avoids yellowing. Strontium is also a good pigment wetting & dispersing agent preventing haze & wrinkling. Worldwide Exports

Calcium being an auxiliary drier, has little drying action in itself but is very useful in combination with active driers like Cobalt & Lead Octoate. 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 often used to replace lead where toxicity of lead must be avoided. Calcium is also useful as pigment wetting & dispersing agents & h

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, hence combination with calcium is necessary. 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

Zinc being an auxiliary drier, used in conjunction with redox metals. The primary function of zinc is to keep the film “Open” by retarding Surface dry, thus permitting hardening through out & preventing surface wrinkling, particularly in Cobalt containing films & enamels. Zinc is a powerful wetting & dispersing agent, & when incorporated early in formulation, it greatly reduces the time of mixing & grinding. Because of the extremely light colour, Zinc can be added without dis

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 &

Manganese driers are intermediate in activity & they have both oxidizing & polymerizing properties & hence can be used as surface & through drier. It is used alone in backing finishes & along with Cobalt & Lead in air drying applications. When used in combination with Lead, hard tough & durable films are produced. It is mainly used for exterior paints, floor finishes, backing enamels, foundry chemicals etc. Worldwide Exports

Cobalt Octoate is the most active surface drier. It promotes the polymerization of media, hardens the paint film, improves gloss and water resistance, and reduces brittleness. Careful use of Cobalt Octoate ensures a paint film with excellent gloss, free from frosting tendencies. Worldwide Exports