Titanium Dioxide and Other White Pigments

Non-hiding white pigments, sometimes referred to as extenders or 

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Plasticizers which have been used successfully include polyethylene tetrasulfide, polyethylene diacetate tetrasulfide, dimercaptobutane diallyl tetrasulfide, and the (mercaptoethyl) cyclohexanethiols (6, 50, 51,52), The development of yellow and other colors for highway marking paints was accomplished easily. However, a white paint which meets color and reflectance specifications is difficult to prepare. The absorption characteristics and high refractive index of elemental sulfur present formidable problems. The simple addition of titanium dioxide and other white pigments does not produce a white paint, and masking agents or other additives usually must be incorporated. 

Irick, G. (1972). Determination of the photocatalytic activities of titanium dioxides and other white pigments. Journal of Applied Polymer Science, 16(ff), 2387-2395. 

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