Pigment, A or D Series/18.0 Do not mix the peroxide and promotor. Mix in the promotor only after the peroxide is dissolved in the polyester. A violent reaction may occur if the peroxide and promotor are mixed together first. 3. Polyvinyl Chloride Exceptional color and brightness can be obtained with the Switzer daylight fluorescent pigments in vinyl plastisols, organosols, calendered film, and molded articles. Other pigments, especially the opaque kind, and large amounts of fillers cannot be used with them without serious loss of color and brightness. The amount of fluorescent pigment required depends on the thickness of the article or film, and on depth of color and degree of light-stability desired. Content can range from 1% to 30%. The following table gives the approximate minimum percentages for optimum color and light-stability: $G: Thickness in Mils 3 to 5 10 20 40 and over For most plastisols, the highest pr
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