Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Clariant Hostatint UV F5RK Color Paste

Clariant Hostatint UV F5RK Color Paste is a high-performance, photostable liquid pigment dispersion for UV-curable coatings and inks. Featuring excellent lightfastness, low migration, and superior compatibility with acrylate systems, it ensures vibrant color consistency and robust curing performance across demanding industrial applications.
  • clariant hostatint uv f5rk color paste_d079c534
  • clariant hostatint uv f5rk color paste_d079c534

Features Of Clariant Hostatint UV F5RK Color Paste

  1. High-performance UV-stable organic pigment dispersion for demanding outdoor applications.

  2. Optimized rheology for easy incorporation into UV-curable coatings and inks.

  3. Excellent lightfastness and weather resistance meeting ISO 11341 and ASTM G154 requirements.

  4. Low volatile organic compound (VOC) content, supporting sustainable formulation goals.

  5. Consistent batch-to-batch color strength and hue, ensuring reliable production repeatability.

Typical Applications Of Clariant Hostatint UV F5RK Color Paste

  1. UV-curable industrial coatings for automotive trim and electronics enclosures.

  2. UV-flexo and UV-offset inks for premium packaging requiring long-term outdoor exposure.

  3. UV-curable digital inks for decorative laminates and signage substrates.

  4. UV-curable powder coating colorants for architectural aluminum profiles.

  5. Functional color pastes for optical films and anti-glare layers in display components.

Specifications Of Clariant Hostatint UV F5RK Color Paste

Chemical TypeOrganic pigment dispersion in reactive acrylate carrier
Product FormPaste (liquid dispersion)
AppearanceHomogeneous, viscous paste with uniform color distribution
Primary ApplicationsUV-curable coatings, inks, and functional films
Key FeaturesUV stability, low VOC, high color strength, shear-thinning rheology
Storage ConditionsStore at 5–30 °C; protect from freezing and direct sunlight
Shelf Life12 months from date of manufacture under recommended storage
ComplianceREACH registered; compliant with EU Directive 2009/128/EC (Sustainable Use of Pesticides)


Clariant Hostatint UV F5RK Color Paste – Frequently Asked Questions (FAQ)

Q1: What is the primary application of Hostatint UV F5RK Color Paste?

A: Hostatint UV F5RK is a highly concentrated, UV-stable color paste specifically developed for coloring UV-curable inks, coatings, and adhesives—particularly where high chroma, excellent dispersion stability, and minimal impact on cure speed are required.


Q2: Is this product compatible with common UV resin systems?

A: Yes, Hostatint UV F5RK is formulated for compatibility with acrylate-based UV resins—including monofunctional, difunctional, and multifunctional monomers and oligomers—and demonstrates good stability in both free-radical and cationic UV formulations.


Q3: How should Hostatint UV F5RK be incorporated into a UV formulation?

A: It is typically added during the final mixing stage under low-shear conditions to preserve dispersion integrity. Pre-dispersion is not usually required, but gentle homogenization ensures uniform distribution without introducing air or degrading photoinitiator efficiency.


Q4: Does this color paste affect UV cure performance?

A: When used within recommended dosage ranges, Hostatint UV F5RK exhibits low photoinhibitory effect and maintains efficient surface and through-cure. Its optimized pigment surface treatment helps minimize interference with radical generation and propagation kinetics.


Q5: What is the typical dosage range for achieving target color strength?

A: Dosage depends on the base formulation, desired opacity/chroma, and substrate, but it is generally used at low concentrations—typically ranging from 0.1% to 2% by weight—to achieve strong, consistent coloration without compromising rheology or cure behavior.



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