Black Pigments for Construction Materials

Integrated Building Material Pigment Supplier

Deqing Demi Pigment Technology Co., Ltd. is a leading provider of inorganic blacks for the global building materials sector. We specialize in producing blacks that provide a consistent "Cool Grey" to "Intense Black" palette. Our manufacturing process ensures that the pigment has a high "Tinting Power," allowing manufacturers of concrete blocks and pavers to achieve dark shades cost-effectively. We are the trusted partner for infrastructure projects requiring long-term visual permanence.

Construction Application Fields

• Concrete Blocks: Deep black coloring for retaining walls and masonry.
• Asphalt Additives: Enhancing the "blackness" and UV life of road surfaces.
• Fiber Cement Board: Integral coloring for modern architectural siding.
• Terrazzo: High-contrast black for decorative polished stone floors.

Building Grade Black Specs

Attributes for Modern Architecture

• Non-Fading: Unlike organic dyes, these mineral blacks are permanent.
• High Hiding: Effectively masks the grey of cement with minimal dosage.
• Efflorescence Control: Low salt content minimizes the risk of white staining.
• Compatibility: Works perfectly with all types of Portland and specialty cements.

• Q: Can I get a "Jet Black" finish in concrete?

  A: Achieving a true jet black in concrete is difficult due to the grey of cement. Using our Black 722 in white cement or at a higher dosage (8-10%) provides the darkest possible results.

• Q: Will the black color wash off in the rain?

  A: No, our black pigments are permanently locked into the concrete matrix during hydration.

Custom Black Intensity Blending

We offer customized black-to-blue blends to provide the "Cool Charcoal" look favored in modern high-rise architecture.

Bulk Liquid Pigments: For automated concrete plants, we provide high-purity black powders that are optimized for the production of liquid color dispersions, ensuring clog-free operation of dosing pumps.

The Science of Light Absorption

In black pigments, color science is the study of "Light Absorption." We use spectrophotometers to ensure the L∗ value (lightness) is as low as possible. We analyze the "Undertone"—mineral blacks often have a slightly blue or brown undertone. We monitor the "Spectral Flatness" to ensure that the black appears consistent under both daylight and artificial street lighting, preventing "Metamerism" where the concrete looks different at night.