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High chromatic strength with intense, clean blue-violet hue.
Excellent thermal stability up to 250 °C for demanding processing conditions.
Good lightfastness and weather resistance in non-acidic media.
Low water solubility and superior alkali resistance compared to conventional ultramarines.
Consistent particle size distribution ensuring uniform dispersion and batch-to-batch reproducibility.
Architectural coatings and exterior wall paints.
Plastic coloration for rigid PVC, polyolefins, and engineering thermoplastics.
Specialty inks including packaging and decorative printing inks.
Construction materials such as colored concrete, mortars, and stucco.
Artists’ acrylics and high-performance decorative finishes.
| Chemical Type | Sodium aluminum silicate sulfide (synthetic ultramarine) |
| Product Form | Fine free-flowing powder |
| Appearance | Deep blue-violet powder with metallic sheen |
| Primary Applications | Coatings, plastics, inks, construction materials |
| Key Features | Thermal stability, alkali resistance, low water solubility |
| Particle Size (D50) | 8–12 µm (by laser diffraction) |
| pH (10% aqueous suspension) | 9.0–10.5 |
| Volatile Matter (105 °C, 2 h) | ≤5.0 wt% |
Q1: What is the primary chemical composition of Nubiola CP-84 Ultramarine Pigment?
A: Nubiola CP-84 is a synthetic ultramarine pigment based on a complex sodium aluminosilicate structure, with sulfur-containing chromophores responsible for its intense blue hue. It contains no heavy metals and is free from cadmium, lead, or chromium.
Q2: Is CP-84 suitable for use in polyolefin masterbatches?
A: Yes — CP-84 exhibits excellent thermal stability and dispersibility in polyolefin systems, including PP and PE, making it well-suited for masterbatch applications. Its performance remains consistent under standard extrusion conditions typical for color concentrate production.
Q3: How does CP-84 perform in acidic environments?
A: Like most ultramarine pigments, CP-84 is sensitive to low pH and may undergo color degradation or fading when exposed to strong acids or acidic formulations. It is recommended for neutral to mildly alkaline systems and should be evaluated for stability in acidic media prior to full-scale use.
Q4: What is the typical dosage range for CP-84 in plastic coloring applications?
A: Dosage depends on the desired shade intensity and substrate opacity, but CP-84 is typically used at low concentrations — generally ranging from 0.1% to 2% by weight in final plastic products — due to its high tinting strength and clean blue tone.
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