Nubiola GP-58 GP58 Ultramarine Pigment

Features Of Nubiola GP-58 GP58 Ultramarine Pigment

1. Exceptional lightfastness and weather resistance for long-term color stability in outdoor applications.

2. High tinting strength and clean blue-violet hue with excellent chroma and clarity.

3. Low oil absorption ensures easy dispersion and optimal rheology in diverse binder systems.

4. Non-toxic, sulfate-free formulation compliant with major global regulatory frameworks (e.g., EU REACH, US FDA 21 CFR).

5. Thermally stable up to 180 °C, enabling use in medium-heat processing conditions without hue shift.

Typical Applications Of Nubiola GP-58 GP58 Ultramarine Pigment

1. Architectural and industrial coatings requiring durable, non-fading blue pigmentation.

2. Plastics processing—including PP, HDPE, and PS—for consumer goods, packaging, and automotive interior components.

3. Artist-grade acrylics, gouaches, and watercolor paints demanding high purity and archival performance.

4. Specialty inks for security printing, decorative laminates, and high-end packaging.

5. Construction materials such as colored concrete, stucco, and dry-mix mortars.

Specifications Of Nubiola GP-58 GP58 Ultramarine Pigment

Nubiola GP-58 GP58 Ultramarine Pigment – Frequently Asked Questions (FAQ)

Q1: What is the primary chemical composition and structural basis of GP-58 ultramarine pigment?

A: GP-58 is a synthetic sodium aluminosilicate pigment with a sodalite-type crystalline structure, incorporating polysulfide anions (Sₙ²⁻) responsible for its intense blue color. It contains no heavy metals such as lead, cadmium, or chromium, aligning with modern environmental and regulatory expectations for inorganic colorants.

Q2: Is GP-58 suitable for use in heat-sensitive polymer systems such as polyolefins or PVC?

A: Yes — GP-58 exhibits good thermal stability up to approximately 180–200 °C under typical processing conditions, making it compatible with common extrusion and injection molding applications for polyolefins and flexible or rigid PVC. For extended high-temperature exposure or high-shear compounding, stabilization and dispersion optimization are recommended.

Q3: How does GP-58 perform in acidic environments, and what pH range should be avoided?

A: Ultramarine pigments, including GP-58, are susceptible to acid degradation. Prolonged exposure to pH below ~5.5 may cause fading or discoloration due to decomposition of the polysulfide chromophores. It is therefore not recommended for highly acidic coatings, inks, or food-contact formulations where low-pH media are present.

Q4: What is the typical dosage range for GP-58 in plastic masterbatches and architectural coatings?

A: Dosage depends on the desired shade intensity and substrate opacity, but GP-58 is typically used at low concentrations — generally ranging from 0.1% to 2% by weight in plastic masterbatches, and from 0.5% to 1.5% in interior architectural coatings. Optimal loading should be determined through lab-scale trials to balance color strength, dispersion quality, and cost efficiency.