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Demei focuses on the research, development, and production of inorganic iron oxide pigments. Our pigments cover iron oxide red, yellow, black, brown, green, orange, blue, etc.
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Product Details
Comprehensive information about our iron oxide pigments including specifications, applications, advantages, and more
Pigments Powder for Asphalt Coloring
High-performance inorganic pigment with excellent color stability, weather resistance, and broad application range.
Manufacturer of High-Visibility Asphalt Pigments
Deqing Demi Pigment Technology Co., Ltd. provides specialized iron oxide and chromium oxide powders for the global infrastructure market. Our asphalt-grade pigments are selected for their high tinting strength, which is necessary to overcome the natural dark color of the bitumen binder. We work with road construction companies and asphalt plants to provide solutions that improve road safety and aesthetics while maintaining the mechanical durability required for heavy traffic areas.
Asphalt Coloring Usage
- Bicycle and Pedestrian Paths: Color-coding for non-motorized traffic zones.
- Bus Lanes: Durable red or green asphalt for dedicated transit lanes.
- Safety Zones: High-visibility coloring for intersections and pedestrian crossings.
- Parking Areas: Decorative and functional coloring for commercial parking lots.
Asphalt Pigment Technical Table
| Metric | Performance Range | Standard |
| Oil Absorption | 15 - 25 g/100g | ISO 787-5 |
| Heat Stability | Up to 200掳C | Internal Method |
| Weatherfastness | Grade 4 - 5 | Grey Scale |
| Moisture Content | Max 0.8% | ISO 787-2 |
| Bitumen Compatibility | Excellent | Internal Test |
Functional Attributes for Road Materials
- High Tinting Power: Effectively colors the asphalt matrix at addition rates of 3% to 6%.
- UV Resistance: Prevents fading under direct sun exposure on large horizontal surfaces.
- Aggregate Bonding: Does not inhibit the chemical bond between the bitumen and the stone aggregate.
- Ease of Use: Can be added directly to the asphalt mixer in meltable bags to reduce dust.
Q: Can these pigments be used in cold-mix asphalt?
A: Yes, these inorganic powders are compatible with both hot-mix and cold-mix (bitumen emulsion) systems.
Q: Does the color affect the temperature of the pavement?
A: Lighter colored pigments can increase the Total Solar Reflectance (TSR) of the road surface, potentially reducing the urban heat island effect compared to black asphalt.
Bulk Logistics and Packaging
We provide logistics solutions for large-scale road projects, including 1000kg "Big Bags" or specialized 10kg-25kg PE-meltable bags that can be thrown directly into the asphalt plant pugmill.
Technical Field Support: We offer guidance on dosage rates based on the type of bitumen (clear vs. dark) being used, ensuring the most cost-effective coloring strategy for our customers.
Managing Contrast in Bituminous Systems
The science of asphalt coloring involves the management of "Contrast Ratio." Because bitumen is naturally dark, the pigment must have a high scattering coefficient. We use CIELab data to determine the saturation levels achievable with different bitumen grades. By providing pigments with a high chroma (a* and b*), we ensure that the road surface remains visible and distinct even after the initial surface binder film wears off, exposing the pigmented aggregate-mortar matrix.
About Demei
Demei Chemical Co., Ltd. specializes in the research, development, and production of inorganic iron oxide pigments. With over a decade of experience in the field, we have established ourselves as a leading manufacturer with advanced production facilities and a dedicated R&D team.
We are China Custom Pigments Powder for Asphalt Coloring Manufacturers and Wholesale Pigments Powder for Asphalt Coloring Suppliers, Factory. Our comprehensive pigment range includes iron oxide red, yellow, black, brown, green, orange, and blue. We produce high-performance and high-stability composite iron oxide pigments with three specialized series: Standard, Micronized, and Low Heavy Metal Content levels.
Our products are exported to more than 30 countries and regions worldwide, serving diverse industries including construction, coatings, plastics, rubber, ceramics, and paper. We pride ourselves on consistent quality, excellent color properties, and reliable technical support for our global clients.
R&D Excellence
Continuous investment in research and development ensures technological leadership. Our R&D center focuses on innovative pigment formulations and application technologies.
Advanced Manufacturing
State-of-the-art production facilities with automated control systems ensure consistent quality and large-scale production capacity of over 50,000 tons annually.
Quality Assurance
Strict quality control at every production stage. Certified to ISO 9001:2015, our pigments meet international standards for color consistency and performance.
Global Reach
Extensive distribution network across Asia, Europe, Americas, and Africa. We provide customized solutions and technical support for diverse market requirements.
Core Products
We provide a full range of high-quality inorganic iron oxide pigments, widely used in building materials, coatings, plastics, rubber, ceramics and other industries.
Product Series
We offer three specialized series of iron oxide pigments to meet diverse industry requirements and application scenarios
Standard Series
Conventional particle size iron oxide pigments suitable for most industrial applications. Excellent dispersibility and tinting strength with high cost-performance ratio.
Micronized Series
Ultra-fine particle size with uniform distribution. Ideal for high-end coatings, plastics, and applications requiring superior fineness and smooth finish.
Low Heavy Metal Series
Strictly controlled heavy metal content meeting international environmental standards. Suitable for toys, food packaging, and safety-sensitive applications.
Social Responsibility
Demei not only contributes to production and operation, but also faithfully fulfills its social responsibilities, protects the ecological environment, strengthens safe production, and cares for the health of employees.
Environmental Protection
Implementing green production processes, reducing waste emissions, and actively promoting circular economy principles.
Safe Production
Comprehensive safety management system ensuring controlled and secure operations throughout the production process.
Employee Health
Providing healthy working environments, regular health check-ups, and focusing on physical and mental well-being of our employees.
Community Contribution
Active participation in community development, supporting educational initiatives, and giving back to society.
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Phone
86-572-8035379
86-13666526593 -
Hours
Monday-Friday: 9am to 6pm
Saturday, Sunday: Closed -
Address
20th Floor, Mibei Chuanggongchang No. 650 Yunxiu South Road, Deqing County, Huzhou City, Zhejiang Province, China(Sales Office)
