Dura Chemical Corporation Ltd. Offers Cobalt Active Primary Drier. Dura Chemical Corporation Ltd. Supplies Calcium [Drier], Cobalt [Drier], Manganese [Drier], Metallic Carboxylates [Drier], Polyester Accelerators, Polyurethane Catalysts, etc. The Cobalt Active Primary Drier is "the drier" metal and is most extensively used. The Cobalt Active Primary Drier is a powerful oxidation catalyst; and as a result, in coatings containing cobalt alone, the surface dries preferentially causing surface wrinkling and poor through dry in the extreme. It is therefore combined with other metals such as lead, manganese, calcium, zirconium, etc. Traditionally [i.E. In conventional solids coatings] or with aluminum or lithium in modern high solids coatings. Cobalt has a red-violet purple color, however the yellow color of oils and resins counter this and resultant coatings have increased whiteness. Cobalt therefore is invariably preferred in white coatings. The wrinkling effect produced by high cobalt levels is taken advantage of when producing alkyd based wrinkling enamels.
