AZO organic pigments, characterized by their vibrant colors and cost-effectiveness, dominate the industrial pigment market, accounting for over 60% of global organic pigment production38. These pigments feature the iconic azo group (-N=N-) and are prized for their versatility in coatings, plastics, inks, and textiles. Below, we explore the most common AZO pigments and their key applications.
Monoazo pigments contain a single azo group and are known for bright yellows, oranges, and reds. They are ideal for cost-sensitive applications with moderate durability requirements.
Key Varieties:
Hansa Yellow G (C.I. Pigment Yellow 1): A bright greenish-yellow pigment widely used in water-based inks and PVC plastics11.
Permanent Red FR (C.I. Pigment Red 2): A classic red for offset printing inks and toy coatings8.
Toluidine Red (C.I. Pigment Red 3): Offers excellent color strength for indoor paints and textile printing3.
Applications:
Packaging inks
Low-cost plastics
Decorative paints
Disazo pigments feature two azo groups, delivering higher color saturation but lower lightfastness. They are popular in general-purpose industrial products.
Key Varieties:
Benzidine Yellow G (C.I. Pigment Yellow 12): A high-strength yellow for flexographic inks and plastic toys311.
Pigment Orange 34: Used in rubber products and adhesive coatings8.
Applications:
Bulk printing inks
Non-durable plastics
These high-performance pigments are synthesized by linking two monoazo units, significantly improving heat and chemical resistance.
Key Varieties:
Pigment Yellow 93 (C.I. PY93): Withstands temperatures up to 200°C, ideal for engineering plastics like ABS and nylon48.
Pigment Red 144 (C.I. PR144): A durable red for automotive coatings and outdoor fabrics4.
Applications:
Automotive paints
Synthetic fibers
A subclass of AZO pigments, benzimidazolones are renowned for exceptional durability and thermal stability.
Key Varieties:
Pigment Yellow 154 (C.I. PY154): Used in high-end automotive finishes and powder coatings8.
Pigment Orange 36 (C.I. PO36): Resistant to UV exposure, perfect for outdoor signage4.
Applications:
Industrial coatings
Architectural paints
These water-insoluble pigments are derived from water-soluble dyes, offering vibrant hues for specialized uses.
Key Varieties:
Permanent Red F5R (C.I. PR48:2): A bright red for cosmetics and food-safe packaging6.
Lithol Rubine (C.I. PR57:1): Popular in newsprint inks and paper coatings3.
Applications:
Food-contact materials
Cosmetics
Cost-Effective: Lower production costs compared to phthalocyanines or quinacridones3.
Vibrant Colors: Cover the entire yellow-to-red spectrum8.
Customizable: Adjust particle size and surface treatment for specific formulations4.
FAQ Section:
Are AZO pigments safe for food packaging?
Yes! Many comply with FDA and EU standards for indirect food contact6.
Which AZO pigment is best for outdoor use?
Condensed AZO pigments (e.g., PY93) offer superior weather resistance8.
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