R299 is a type of titanium dioxide specifically used for plastics, produced through the sulfuric acid method. Its surface is coated with silicon and aluminum and undergoes special organic treatment, resulting in excellent pigment properties. The product has finer particle size, good whiteness, a blue base tone, high color removal ability, strong covering power, low volatile content, easy dispersion in plastics and rubber, excellent dry powder flowability, and good processing rheological properties.
Using R299 can enhance the heat resistance and yellowing resistance of plastic products, improve their mechanical properties, prevent UV light penetration, and increase the plastic products' resistance to light, weathering, and powdering.
Powder coatings and specialty coatings
rubber, ink and leather color pastes
Good industrial hygiene practices must be applied and dust must be avoided.
This product should not be stored outdoors or exposed to extreme temperatures or moisture. To ensure optimal performance, it is recommended to use the product following the first-in-first-out principle after receiving the goods.
Packaging: 25kg bag
Note: The data contained here are based on our current knowledge and experience. It is the responsibility of user to test our products before the final application.
Items | Quality Standard |
TiO2 Content , % | ≥95.0 |
Rutile Content, % | ≥98.0 |
Color, Compared with the Standard Sample ∆L*(sample-standard) | Not less than ≥-0.3 ≤0.5 |
Whiteness, % | 97.5±1.0 |
Tint Reducing Power,Compared with the Standard Sample | ≥100 |
Volatile at 105℃, % | ≤0.3 |
Water Soluble Objects, % | ≤0.5 |
PH Value of Aqueous Suspension | 6.2～9.0 |
Oil Absorption, g/100g | ≤19.0 |
Start with (1) a bench dispersion: prepare a 1 kg masterbatch at your target pigment loading and check for agglomerates and color uniformity; (2) processability test: run the masterbatch through your standard extrusion/injection cycle, note torque, die build-up and surface finish; (3) performance comparison: mould standard test panels and measure contrast ratio (hiding), yellowness index and weathering after accelerated QUV. Report any changes in rheology or gloss, then run a 10 kg pilot if results are acceptable.
Check (a) pre-wetting: ensure pigment wetting with dispersant before high shear; (b) order of addition: add pigment to binder under slow agitation, then increase shear; (c) media and time: increase bead mill rpm or change bead size to break agglomerates; (d) defoaming and surfactant level: excess surfactant can cause foam and streaks. If streaks persist, run a grind gauge and particle size check (D50) to confirm deagglomeration.
Yes — use relative tinting/hiding strength to estimate. Example method: measure contrast ratio or hiding power per gram for your current pigment (HP_old) and for R299 (HP_new). Required new loading ≈ Old loading × (HP_old / HP_new). Run a small validation batch to confirm color and rheology before full substitution. Note: optical effects (gloss, tint acceptance) may require fine-tuning of dispersants and PVC.
