Nubiola Nubiperf H-55 Ultramarine Pigment

Features Of Nubiola Nubiperf H-55 Ultramarine Pigment

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

2. High tinctorial strength with intense, clean blue hue (CIE L*a*b* typical: L* ≈ 48, a* ≈ −12, b* ≈ −32).

3. Excellent heat stability up to 180 °C, suitable for medium-temperature polymer processing.

4. Low sulfate content and optimized particle size distribution for improved dispersion in aqueous and solvent-based systems.

5. Non-toxic, heavy-metal-free formulation compliant with global regulatory frameworks including EN 71-3 and FDA 21 CFR §178.3297.

Typical Applications Of Nubiola Nubiperf H-55 Ultramarine Pigment

1. Architectural and industrial coatings requiring durable, fade-resistant blue tones.

2. Plastic coloring for PP, HDPE, and PS in consumer goods, packaging, and automotive interior components.

3. Masterbatch production for film, fibers, and injection-molded parts.

4. Inks for packaging gravure and flexographic printing where color consistency and clarity are critical.

5. Construction materials including dry-mix mortars, concrete pigments, and stucco formulations.

Specifications Of Nubiola Nubiperf H-55 Ultramarine Pigment

Nubiola Nubiperf H-55 Ultramarine Pigment – Frequently Asked Questions (FAQ)

Q1: What is the primary chemical composition and structural basis of Nubiperf H-55?

A: Nubiperf H-55 is a synthetic ultramarine pigment based on a sodium aluminosilicate framework with polysulfide chromophores. Its intense blue hue arises from the trapped S₃⁻ radical anions within the sodalite cage structure, offering excellent lightfastness and thermal stability typical of high-performance ultramarines.

Q2: Is Nubiperf H-55 suitable for use in acid-sensitive applications such as certain coatings or inks?

A: No — like all standard ultramarine pigments, Nubiperf H-55 is alkaline and susceptible to discoloration or degradation in acidic environments (pH < 7). It is recommended for neutral to alkaline systems only; for acidic media, alternative blue pigments such as phthalocyanine blues should be considered.

Q3: How does Nubiperf H-55 perform under elevated temperature conditions during processing?

A: Nubiperf H-55 exhibits good thermal stability up to approximately 200 °C in short-term exposure, making it suitable for many thermoplastic compounding and baking enamel applications. Prolonged exposure above this threshold may lead to gradual fading due to oxidation of the sulfur-based chromophores.

Q4: What is the typical dosage range when incorporating Nubiperf H-55 into polymer masterbatches or architectural paints?

A: Dosage depends on the desired shade intensity and opacity requirements, but it is typically used at low concentrations — generally ranging from 0.1% to 2% by weight in most industrial formulations. Optimal dispersion and compatibility testing are recommended for each specific system.

Q5: Can Nubiperf H-55 be safely used in direct food-contact plastics or cosmetics?

A: Nubiperf H-55 is not approved for direct food-contact applications or cosmetic use under current global regulatory frameworks. It is intended for industrial and decorative applications where regulatory compliance for ingestion or dermal exposure is not required.