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Outstanding Weather Resistance
In outdoor environments, plastic products incorporating DW-1070 effectively absorb and reflect UV radiation, offering excellent resistance against degradation of color, gloss, and other properties. Accelerated weathering data shows DW-1070 tracking at or slightly below the rutile reference in color shift.
Product Performance Brief · Part 2
DW-1070 Performance Properties
Beyond optical quality, DW-1070 delivers the processing and durability characteristics required for demanding plastics applications. This brief covers three core performance areas: hiding power (opacity), processing stability (TGA), and outdoor weather resistance.
Super-dispersed TiO2 Masterbatch
PVC / PE / PP Compatible
Benchmarked vs TiO2(616S)
ISO 4892-3 weathering
01
Opacity Strength
Hiding power · Transmittance and opacity comparison
Opacity is calculated as 100 × (1 − transmittance). Under identical loading, DW-1070 matches the reference rutile TiO2(616S) at 6.0% transmittance and 94% opacity — confirming that the super-dispersed masterbatch delivers equivalent hiding power while providing the dispersion and processing benefits described in later sections.
TiO2(616S) — Reference
DW-1070
· Test panel: 2 g pigment / 66 g PVC, 1 mm thickness
Key Finding
DW-1070 achieves the same opacity (94%) and transmittance (6.0%) as the rutile reference — full hiding power with no compromise.
| Product | Transm. | Opacity |
|---|---|---|
| TiO2(616S) Ref | 6.0% | 94% |
| DW-1070 Ours | 6.0% | 94% |
Equivalent Hiding Power
Matches premium rutile TiO2 opacity at the same loading — no need to increase pigment dosage when switching to DW-1070.
Consistent Across Substrates
Validated in both PP and PVC sheets at 1 mm thickness, demonstrating broad processing compatibility.
Cost-in-Use Advantage
Because dispersion is built into the masterbatch, formulators retain full opacity without the dispersion losses common to powder pigments.
02
Thermogravimetric Analysis (TGA)
Volatility profile · Weight retention vs temperature
Low volatile content is critical for high-temperature plastics processing — excess moisture or volatiles cause bubbles, silver streaks and surface defects. DW-1070 retains 99.5% of its initial mass even at 150 °C, confirming an ultra-low volatile content suitable for demanding extrusion and injection-molding conditions.
DW-1070 (PE masterbatch)
· Heating from 50 °C to 150 °C
Key Finding
Less than 0.5% mass loss across the full 50–150 °C processing window — avoiding bubbles and silver streaks during extrusion and molding.
| Temp (°C) | Weight (g) | Loss |
|---|---|---|
| 50 | 100.0 | 0.0% |
| 70 | 100.0 | 0.0% |
| 90 | 99.9 | 0.1% |
| 110 | 99.8 | 0.2% |
| 130 | 99.7 | 0.3% |
| 150 | 99.5 | 0.5% |
Defect-Free Processing
Ultra-low volatiles prevent bubble and silver-streak formation that commonly plague pigments with residual moisture.
Wide Process Window
Stable from 50 °C through 150 °C, covering standard PE, PP, and PVC processing temperatures.
Predictable Material Balance
Sub-0.5% mass loss means accurate gravimetric dosing — formulations stay on-spec without compensation factors.
03
Weather Resistance
Accelerated UV aging · ΔE color shift over time (ISO 4892-3)
Accelerated weathering simulates outdoor UV exposure for PVC window and door profiles. Test specimens were dosed at 3% pigment loading — one using the reference rutile TiO2(616S) and one using DW-1070 — then tracked for ΔE color shift across 168 hours of UV exposure under ISO 4892-3. Throughout the full test, DW-1070 tracked at or slightly below the reference, ending at ΔE 1.19 vs 1.22 — confirming that DW-1070 delivers weather resistance equal to or better than a premium rutile reference.
DW-1070 (3% in PVC)
TiO2(616S) (3% in PVC)
· Lower ΔE = better color retention
Key Finding
Final ΔE at 168 hr: DW-1070 = 1.19 vs reference 1.22 — slightly better color retention than the rutile reference, qualifying DW-1070 for demanding outdoor PVC applications.
| Hours | ΔE Ref (616S) | ΔE DW-1070 |
|---|---|---|
| 24 | 0.15 | 0.14 |
| 48 | 0.42 | 0.42 |
| 72 | 0.62 | 0.60 |
| 96 | 0.96 | 0.94 |
| 168 | 1.22 | 1.19 |
Outdoor-Grade Durability
Color shift after 168 hr UV exposure matches a premium rutile reference — qualified for exterior PVC profiles, siding, and architectural parts.
ISO 4892-3 Validated
Tested under an internationally recognized accelerated weathering protocol, ensuring results are comparable across suppliers and customers.
Long-Term Color Stability
Final ΔE ≈ 1.2 keeps finished parts visually consistent over their service life — critical for warranty-backed window and door systems.