Ti-Pure™ rutile titanium dioxide pigments impart whiteness, brightness and opacity to various polymer applications including polyolefins, PVC, and engineering polymers. In addition to optical properties, Ti-Pure™ TiO2 can help to improve processability and to protect the polymers from UV degradation.

What are the benefits of using Ti-Pure™ in Plastic applications?

Titanium dioxide is the most important white pigment used in the plastics industry. With titanium dioxide, plastic products can gain improved optical properties. In addition, the ability of titanium dioxide to absorb UV light energy can provide significant improvement in weatherability and durability of polymer products. This property has established the use of TiO2 in demanding application segments such as PVC window profiles and agricultural films where chalking stability and color retention are required..

Ti-Pure™ titanium dioxide from Chemours brings outstanding advantages to plastic products:
Tick Excellent optical properties: whiteness, brightness, opacity
Tick Improved processability
Tick Long-term durability / weatherability

Ti-Pure™ titanium dioxide improve optical properties in plastics

Unlike colored pigments that provide opacity by absorbing visible light, titanium dioxide and other white pigments provide opacity by scattering light. This scattering is possible because the white pigment can bend light. If there is enough pigment in a system, all light striking the surface, except for the small amount absorbed by the polymer or pigment, will be scattered outward, and the system will appear opaque and white. In the figure below, the tint strength, undertone of Ti-Pure™ grades R-105, R-101, R-104, R-350 and R-103 are represented. As shown the Ti-Pure™ R-104 combines high tinting strength and blue undertone.
Tint Strength
Optical properties of Ti-Pure™ TiO2

Processability made easier thanks to Ti-Pure™

As an example of the easier processability of Ti-Pure™ TiO2, we present how Ti-Pure™ R-350 surface allows for exceptional processing even in highly loaded TiO2 PE systems. Unique R-350 chemistry permits the product to achieve desirable masterbatch viscosities in a wide variety of polyolefin based resins. This function allows a formulator to minimize the TiO2 impact on melt properties during processing and end use applications as shown in the figure below.
Melt flow Index
Melt Flow Index of Ti-Pure™ R-350 vs standard grades

Protect exterior plastic parts against UV degradation with Ti-Pure™ titanium dioxide

Pigmented plastics typically degrade when exposed to weather and sunlight. Chemours Ti-Pure™ titanium dioxide improves the weatherability of exterior plastics thanks to its inorganic surface treatments of alumina or silica. This barrier between the TiO2 and the resin minimizes photochemical degradation. This type of TiO2 is widely used in white and colored plastics for exterior applications. In the chart below, the gloss retention of PVC with Ti-Pure™ R-960 vs Ti-Pure™ R-103 is compared. Ti-Pure™ R-960 is designed primarily for exterior color durable applications and provides maximum surface retention while still providing efficient UV radiation protection.
Gloss retention of PVC
Gloss retention of PVC with Ti-Pure™ R-960 and R-103 pigments
Florida exposure 45° South

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