Why Rutile TiO2 is Essential for Modern Plastic Manufacturing
Titanium dioxide (TiO2) exists in two primary crystalline forms: Rutile and Anatase. While Anatase is cheaper, Rutile possesses a significantly higher refractive index (2.73 compared to Anatase's 2.55) and vastly superior resistance to UV-induced chalking and yellowing.
Our White Masterbatches utilize surface-treated rutile titanium dioxide pigments encapsulated in high-grade polyolefin carriers (virgin LDPE, LLDPE, or PP). This specialized surface passivation prevents photocatalytic degradation during outdoor exposure and ensures complete de-agglomeration down to sub-micron particle sizes.
Why International Buyers Prefer Our White Masterbatch:
- High Opacity at Lower Dosage: Up to 70% rutile TiO2 loading allows film extruders to achieve dense opacity at only 2.0% to 3.5% dosage, cutting freight and overall resin costs.
- High Temperature Resistance (Up to 300°C): Zero thermal yellowing during high-speed cast extrusion, lamination, or hot-runner injection molding.
- Zero Die Lip Accumulation: Clean formulation prevents greasy volatile deposition and die drool during continuous multi-shift production.
White Pellet Physical Attributes
White Masterbatch Application Grades
High-purity white formulations engineered for specific polymer conversion processes.
Ultra-Thin Blown Film Grade
Formulated for shopping bags, milk pouches, courier envelopes, and high-speed multi-layer co-extrusion. Provides maximum hiding power and pure bluish-white hue without pinholes.
- TiO2 Content: 50% – 70% Rutile
- Carrier Resin: Virgin LLDPE / LDPE
- Recommended LDR: 2.0% – 4.0%
Injection & Blow Molding
Engineered for cosmetic bottles, food containers, caps, closures, household plastics, and appliances. Excellent melt flow index with uniform color distribution and gloss.
- TiO2 Content: 40% – 60% Rutile
- Carrier Resin: Virgin PP / PE
- Recommended LDR: 1.5% – 3.0%
Sheet & Thermoforming Grade
Specialized for extruded sheets, thermoformed disposable plates, cups, and trays. High heat stability prevents yellowing in thermoforming heating tunnels.
- TiO2 Content: 30% – 50% Rutile
- Carrier Resin: PS / PP / PE
- Recommended LDR: 2.0% – 5.0%
Pipes & Cable Jacketing
Engineered for white electrical conduit, drainage profiles, and telecom microducts. Formulated with UV stabilizers to resist chalking and mechanical embrittlement from sunlight.
- TiO2 Content: 30% – 50% Rutile
- Carrier Resin: HDPE / PVC-compatible PE
- Recommended LDR: 2.0% – 4.0%
Economical Blown Film Grade
Designed for cost-conscious shopping bag and agricultural film producers in Southeast Asia and Africa looking for the ideal balance between raw material cost and acceptable opacity.
- TiO2 Content: 25% – 40%
- Carrier Resin: Virgin / Modified PE
- Recommended LDR: 2.5% – 5.0%
Custom TiO2 Formulations
Require special food-contact certification (FDA/EU), optical brightener addition, or high-MFI carriers for thin-wall injection molds? Contact our technical team for custom trials.
Typical Physical & Chemical Parameters
Verified operational reference parameters for our white masterbatch line. Specific batch Certificate of Analysis (COA) supplied with each export delivery.
| Test Parameter | Test Standard | High-Opacity Film Grade | Injection / Bottle Grade | Sheet / Thermoforming | Unit |
|---|---|---|---|---|---|
| Titanium Dioxide (TiO2) | ISO 3262-1 / Ash Test | 50% – 70% Rutile | 40% – 60% Rutile | 30% – 50% Rutile | % wt |
| Carrier Polymer | FTIR Identification | Virgin LLDPE / LDPE | Virgin PP / PE | Virgin PS / PE | Polymer |
| Melt Flow Index (MFI) | ASTM D1238 (190°C/2.16kg) | 8.0 – 25.0 | 15.0 – 40.0 | 6.0 – 20.0 | g / 10 min |
| Bulk Density | ASTM D1895 | 1.40 – 1.85 | 1.30 – 1.70 | 1.25 – 1.60 | g / cm³ |
| Whiteness Index (L*) | CIE Lab System | ≥ 96.0 | ≥ 95.5 | ≥ 95.0 | L* scale |
| Thermal Stability | Internal Thermal Chamber | 280 – 300 | 260 – 290 | 240 – 280 | °C |
| Moisture Content | Karl Fischer Method | ≤ 0.15 | ≤ 0.15 | ≤ 0.18 | % wt |
| Recommended Dosage (LDR) | Application Trial | 2.0% – 4.0% | 1.5% – 3.0% | 2.0% – 5.0% | % |
Request a White Masterbatch Sample Kit
Test high-opacity rutile masterbatch on your film blowing lines or injection presses. Fast dispatch via international express courier.