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Zinc oxide. Zinc oxide is a popular cross-linking agent for rubber and for various resins. It is essential in the formulation of solvent-borne polychloroprene adhesives. Furthermore, zinc oxide is a good UV stabilizer, has biocidal activity and has a relatively high refractive index (2.0) which makes it an efficient white pigment. Some typical properties are: density 5.6 g/cm3; particle size 0.036-3 μm; oil absorption 10–20 g/100 g; specific surface area 10–45 m2/g. Zinc oxide is produced by reaction of the metal in the vapour state with oxygen. Zinc oxide is nonporous and is quite pure. Thus, the high surface area of some grades is due to the small particle size of zinc oxide. Some grades, especially for use in the rubber industry, are surface modified by deposition of 0.2-0.4% of stearic acid, propionic acid, or light oil [47].

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  • Moreover, TIO2's contribution extends beyond color enhancement. It introduces a corrosion-resistant barrier within paints, safeguarding underlying surfaces from the detrimental effects of moisture, chemicals, and UV radiation. This protective quality is of paramount importance for exterior applications, where exposure to environmental elements is inevitable. In architectural paints, for instance, the inclusion of TIO2 not only beautifies structures but also prolongs their lifespan by combating weathering In architectural paints, for instance, the inclusion of TIO2 not only beautifies structures but also prolongs their lifespan by combating weathering In architectural paints, for instance, the inclusion of TIO2 not only beautifies structures but also prolongs their lifespan by combating weathering In architectural paints, for instance, the inclusion of TIO2 not only beautifies structures but also prolongs their lifespan by combating weatheringchina tio2 used in paint.