Black Pigments for Plastic Compounds

Leader in Inorganic Plastic Blacks

Deqing Demi Pigment Technology Co., Ltd. is a premier supplier of blacks for the global compounding industry. Our pigments are the choice for "High-Jetness" applications where a professional, deep black finish is required. We understand that in technical plastics, the pigment must be free of moisture and contaminants to prevent surface defects. Our blacks are manufactured to the highest purity standards, ensuring that every batch of masterbatch or compound produced is flawless and consistently dark.

Plastic Compound Usage Areas

• Electronic Enclosures: Deep black coloring for laptops, phones, and TVs.
• Automotive Interiors: UV-stable black for dashboards, panels, and trim.
• Plastic Pipe Systems: High-opacity black for HDPE water and gas pipes.
• Consumer Packaging: Premium black for cosmetic jars and luxury containers.

Plastic Black Technical Specs

Performance Characteristics

• Deep Blue Undertone:

  Provides a "cooler," more premium black appearance than brownish alternatives.

• Low Dielectric Impact:

  Ideal for electronic housings requiring high electrical resistance.

• Surface Smoothness:

  Eliminates "silver streaking" and surface roughness in molded parts.

• Excellent UV Hiding:

  Protects the polymer from UV degradation by absorbing all visible light.

• Q: Can this be used in "Food-Grade" plastic?

  A: Yes, our high-purity blacks meet the stringent requirements for food contact materials (FDA/EU), being free of polycyclic aromatic hydrocarbons (PAHs).

• Q: Does it cause "Moisture Voids" in nylon?

  A: Our technical blacks are "Ultra-Dry" (low moisture) to prevent gas bubbles during the high-heat processing of Nylon (PA).

Technical Compounding Support

We provide "Filter Pressure Value" (FPV) testing data to ensure our blacks are fine enough for use in thin-wall films and fine fibers.

Custom Jetness Matching: We can adjust the "Undertone" of our blacks to match specific brand standards, whether you require a "Blue-Black" or a "Neutral-Grey" profile.

The Science of Jetness (My​)

In plastic blacks, we focus on the "Blackness Index" (My​). We use spectrophotometry to ensure the L∗ value (lightness) is minimized. Because Fe3​O4​ is non-conductive, it allows for coloring electronic parts without risking short circuits. We monitor the "Refractive Index Match" between the pigment and the plastic resin to ensure a smooth, high-gloss surface that conveys a "high-end" feel to the finished molded product.