Chlorination 




 DuPontTM Ti-Pure R-931 titanium dioxide 

 Product Description 

 DuPont Ti-Pure R-931 is a rutile titanium dioxide pigment for high titanium dioxide content of the plain latex paint has a very good cover ability to the R-931 is produced by chlorination, their nature is as follows: 

 Table 1 R-931, the analytical results and physical properties 




 Of TiO2 80% by weight, minimum 




 The AL2O3 6.4 weight% 




 Of SiO2 10.2% by weight 




 The proportion of 3.6 




 Weight volume of 0.275 l / kg 

 0.033 gallons / lb 




 The oil absorption of 35.9 g / 100 g 




 PH value of 8.9 




 Organic matter at the No 




 Color the CIE L * 100.0 




 Particle size values ??(μm) 0.55 




 4 kilohm resistor (30 ° C) 




 Black at the end color 9.8 


 * Note: Unless otherwise specified, all numerical values ??are typical. 

 Use the recommended 

 Ti-Pure R-931 titanium dioxide used in aqueous and nonaqueous plain paint, take excellent balance between high hiding power and excellent film integrity for titanium dioxide content of 0.25 kg / l or higher PVC (Pigment Volume Concentration) range between 45-60% of the coating, R-931 is the most effective. 

 The surface of the oxide processing provides a bit of space separated crowding effect, maximizes the efficiency of titanium dioxide while maintaining good film integrity. 

 Performance in the ink 

 Table II the relative wear resistance of titanium dioxide 

 (Copper) 




 Model the relative wear resistance * 




 R-900 

 The R-902 3 

 The R-931 2 

 R-960 1 


 * 1 low, 5 high 

 R-931 for the ink in the low wear and high hiding power.