Typical Applications
Pigment Yellow 191 is used in a wide range of industrial coloration systems.
• Automotive Coatings: OEM finishes and refinish coatings requiring durable yellow shades.
• Industrial Coatings: Architectural paints, powder coatings, and general industrial finishes.
• Plastics: Polyolefins, engineering plastics, and masterbatch production.
• Printing Inks: Packaging inks and certain solvent-based printing systems.
• Consumer Products: Colored plastic components and molded polymer goods.
These applications benefit from the pigment’s durability and compatibility with various resin systems.
Key Performance Properties Related to Applications
• Color Shade:
Produces a bright greenish-yellow tone with clear and vivid color appearance.
• Tinting Strength:
Provides strong tinting strength suitable for coatings and plastic formulations.
• Lightfastness:
Offers excellent lightfastness, typically rated 7–8 depending on formulation.
• Heat Resistance:
Suitable for plastic processing temperatures typically up to 280–300 °C, depending on the polymer system.
• Weather Resistance:
Demonstrates stable performance under outdoor exposure conditions.
• Chemical Resistance:
Resistant to many acids, alkalis, and common industrial solvents.
Advantages
-
Excellent Heat Resistance
Pigment Yellow 191 demonstrates outstanding thermal stability, maintaining color integrity without deformation at 300 °C in HDPE and up to 330 °C in polycarbonate. -
Superior Lightfastness
With a lightfastness grade of 7–8, it offers long-lasting color durability under UV exposure and outdoor conditions. -
Outstanding Migration Resistance
In plasticized PVC, PY191 shows excellent anti-migration properties, ensuring stable color and appearance during long-term use. - Good Solvent and Chemical Resistance
The pigment resists solvents and chemical attack, maintaining its performance even in harsh processing environments.
Typical Limitations
• Cost Considerations:
As a high-performance pigment, Pigment Yellow 191 may be more expensive than conventional azo pigments.
• Dispersion Requirements:
Proper dispersion techniques may be needed to achieve optimal color development.
• Opacity Adjustment:
Transparency or opacity may vary depending on formulation and binder systems.
Buyer Guidance
When evaluating Pigment Yellow 191, buyers typically consider:
• Required shade tone (greenish yellow vs. reddish yellow)
• Exposure conditions such as outdoor weathering or UV exposure
• Processing temperature of plastics or curing temperature of coatings
• Required lightfastness and weather durability
• Compatibility with coating, plastic, or ink resin systems
• Regulatory and compliance considerations for industrial applications
Synonyms
| Yellow KGR | Versal Yellow RL | Pyrazolone Yellow HGR | Yellow HGR 31 |
| Plasco Yellow 191 | CAS No.: 129423-54-7 | Hostprint Yellow HGR 31 | PV Fast Yellow HGR |
| Pigment Brilliant Yellow HGR | C.I. Pigment Yellow 191 (C.I. 18795) | Benzenesulfonic acid, 4-chloro-2-[[4,5-dihydro-3-methyl-5-oxo-1-(3-sulfophenyl)-1H-pyrazol-4-yl]azo]-5-methyl-, calcium salt (1:1) |
Manufacturer and Supplier Information
Pigment Yellow 191 is produced by manufacturers specializing in high-performance organic pigments, particularly benzimidazolone pigment chemistry. Commercial grades may vary in particle size distribution, surface treatment, and dispersion characteristics, depending on the intended use in coatings, plastics, or printing inks.
Package and Delivery
● 25KG Kraft Bag, 400kg/500kg Carton Box
● Lead Time: Normally around 15 days after signed contract.
FAQ
1.What color shade does Pigment Yellow 191 produce.
Pigment Yellow 191 typically provides a bright greenish-yellow shade suitable for coatings and plastics.
2.Is Pigment Yellow 191 suitable for outdoor coatings.
Yes. It is commonly used in automotive and industrial coatings because of its excellent lightfastness and weather resistance.
3.Can Pigment Yellow 191 be used in plastics.
Yes. The pigment can be used in polyolefins and selected engineering plastics, depending on processing conditions.
4.What are the key characteristics of Pigment Yellow 191.
Typical characteristics include excellent lightfastness, strong heat resistance, and stable chemical performance in coatings and plastic systems.
