Why Pigment Yellow 191 Is the Preferred Choice for Coloring Plastics

Pigment Yellow 191 (PY 191)has emerged as a preferred solution due to its unique combination of excellent heat resistance, outstanding lightfastness, and all-around durability.

Key Advantages of Pigment Yellow 191 for Plastics:
Exceptional Heat Resistance: 
Pigment Yellow 191 withstands processing temperatures up to 300°C in HDPE and up to330°C in polycarbonate, making it ideal for a wide range of thermoplastic applications without causing dimensional deformation or degrading in color quality.

Excellent Lightfastness & Weather Resistance:
•    Rated at level 7–8 lightfastness, PY 191 maintains its brilliant yellow shade even after prolonged exposure to sunlight or UV, ensuring color stability for both indoor and outdoor products.
•    Its weather resistance means plastic products retain their appearance even in challenging environments with high temperatures, humidity, or intense sunlight.

Superior Migration and Solvent Resistance:
The pigment has excellent migration resistance in PVC and other polymers, preventing color bleeding or fading, which is crucial for maintaining product aesthetics over time.
Strong resistance to organic solvents :further enhances performance during processing and in end-use products.

Good Dispersion and Processability:
PY 191 disperses evenly in plastic substrates, reducing the risk of color spots and ensuring consistent, uniform coloration throughout the final product.
This leads to efficient production runs with minimal defects and vibrant, homogenous color.

Eco-Friendly and Halogen-Free:
Modern grades of Pigment Yellow 191 are designed to be eco-friendly, halogen-free, and compliant with global safety standards, making them suitable for sensitive, regulation-driven markets and applications (such as toys, food packaging, and medical plastics.

Application Versatility:

•    HDPE, LDPE, PP -Thermal stability, no deformation, long-lasting color
•    PVC (rigid/flexible)- High migration resistance, vivid and stable yellow
•    Polycarbonate -Operates at very high molding temperatures
•    ABS & PS -Uniform color, excellent opacity, and processing reliability
•    Masterbatch - Stable base pigment for a range of end-use plastic products

PY 191 is especially valued for products requiring both outdoor durability and vivid color, including automotive parts, construction materials, consumer plastics and packaging.

Pigment Yellow 191 a standout choice for achieving lasting, vibrant yellow shades in demanding plastic industry applications.