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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
Black Pigments for Protective Coatings
High-performance inorganic pigment with excellent color stability, weather resistance, and broad application range.
Heavy-Duty Protective Solutions
Deqing Demi Pigment Technology Co., Ltd. is a global leader in providing inorganic blacks for the protective coatings market. Our pigments are engineered for the most demanding environments—from offshore oil rigs to chemical processing plants. We focus on "Industrial-Grade Purity," ensuring our blacks are free of the water-soluble salts that cause osmotic blistering. Our commitment to quality ensures that critical assets protected with our pigments stay corrosion-free and aesthetically consistent for longer.
Protective Coating Applications
- Marine Coatings: Protection for ship hulls, decks, and ballast tanks.
- Energy Infrastructure: Pipelines, storage tanks, and offshore platforms.
- Heavy Transport: Chassis and underbody protection for trucks and rail cars.
- Containment Coatings: Chemical-resistant linings for industrial concrete pits.
Protective Black Technical Specs
| Property | Value | Standard |
| Fe3O4 Content | Min 95.0% | ISO 1248 |
| Soluble Chlorides | < 100 ppm | Internal Method |
| Specific Resistance | Min 2000 Ω⋅cm | ISO 787-14 |
| Hegman Fineness | 6.0 - 7.0 | ISO 1524 |
| Oil Absorption | 18 - 25 g/100g | ISO 787-5 |
Performance Characteristics
- Anti-Corrosive Barrier: Enhances the moisture-repelling properties of the dry paint film.
- High Dielectric Strength: Low ion content prevents electrochemical corrosion cells.
- Zero Migration: The pigment remains fixed in the coating even during immersion service.
- Mechanical Reinforcement: Improves the structural integrity of the coating layer.
Q: Is iron oxide black better than carbon black for corrosion protection?
A: Yes. Carbon black is conductive and can accelerate galvanic corrosion; iron oxide black is non-conductive and acts as a superior physical barrier.
Q: Can it be used in "High-Build" epoxies?
A: Absolutely. Its low oil absorption allows for the high pigment-to-binder ratios required in high-build, solvent-free systems.
Industrial Corrosion Barrier Testing
We provide "Electrochemical Impedance Spectroscopy" (EIS) data to demonstrate how our black pigments enhance the electrical resistance of protective coatings over extended periods.
Surface Modification: For high-adhesion requirements, we offer surface-treated blacks that increase the "inter-coat" bonding between primers and topcoats in multi-layer marine systems.
The Science of Barrier Protection
In protective coatings, we analyze the "Ion Transport Rate." We ensure our black pigments have an octahedral crystal structure that packs tightly within the resin. Using the CIELab system, we monitor "Jetness" to ensure the coating maintains professional uniformity. By minimizing water-soluble content, we maintain the dielectric strength of the coating, which is essential for preventing the electrochemical reactions that lead to rust and steel degradation in salt-rich environments.
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 Black Pigments for Protective Coatings Manufacturers and Wholesale Black Pigments for Protective Coatings 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)
