In modern coating technology, phosphate esters play a crucial role — they enhance adhesion, improve corrosion resistance, and act as surfactants, plasticizers, or flame retardants. For formulators in industrial paints, marine coatings, or high-temperature finishes, sourcing high-quality phosphate esters is essential for both performance and stability.
You can buy phosphate esters for coating formulations directly from specialized manufacturers, integrated suppliers, or global distributors — with top options including Sunzo Foundation Engineering, Chempower Chemical, Chengxing Phosph-Chemicals, and Clariant.

This guide outlines where to buy phosphate esters wholesale, which suppliers offer the best product quality, and what key factors you should consider before purchasing.
1. Why Phosphate Esters Are Used in Coating Formulations
Phosphate esters are multifunctional additives that modify surface chemistry and film performance in coatings. Their unique molecular structure — with polar phosphate groups and hydrophobic organic chains — gives them wide versatility.
Core Benefits:
- Improved adhesion between metal and organic coatings
- Corrosion resistance through metal chelation and surface passivation
- Flame retardancy via phosphorus char formation
- Wetting and dispersion aid in pigment systems
- Plasticization and flexibility for polymer coatings
Phosphate esters are used in epoxy, polyurethane, acrylic, alkyd, and waterborne coatings, making them indispensable in both decorative and industrial formulations.
2. Types of Phosphate Esters Used in Coatings
Choosing the right phosphate ester depends on your coating type, substrate, and environmental conditions.
| Phosphate Ester Type | Key Properties | Typical Coating Applications |
|---|---|---|
| Triaryl (TPP, TCP, IPPP) | High thermal stability, flame retardant | Industrial, marine, and high-temp coatings |
| Trialkyl (TBP, TEHP) | Plasticizing and solvating power | Flexible polymer coatings |
| Acid Phosphate Esters | Surface-active, reactive with metal ions | Primers and corrosion-resistant coatings |
| Ésteres de fosfato de alquilo arilo | Balanced polarity and wetting | Adhesion promoters and dispersants |
| Polymeric / Modified Esters | Long-term durability and low migration | Automotive and powder coatings |
Each ester family brings a balance between chemical stability, polarity, and compatibility with coating resins.
3. Where to Buy Phosphate Esters Wholesale
a. Direct from Manufacturers
For high-volume or formulation-critical applications, buying directly from a producer ensures:
- Consistent purity and quality
- Factory-level pricing
- Custom-tailored formulations
- Technical data (COA, TDS, SDS)
Ideal for: OEM coating plants and formulation R&D centers.
b. Through Authorized Distributors
Distributors supply multi-brand portfolios with quick delivery options and smaller MOQs.
Ideal for: Small to medium coating manufacturers who need diverse materials or faster logistics.
c. From Integrated Suppliers
Companies like Fundación Sunzo Ingeniería combine chemical manufacturing with application engineering — helping formulators match the correct phosphate ester to their resin systems and field conditions.
Ideal for: Custom coating producers or industries with complex technical requirements (marine, automotive, or infrastructure coatings).
4. Top Phosphate Ester Suppliers for Coating Applications
| Supplier | Location | cURL Too many subrequests. | Product Range |
|---|---|---|---|
| Fundación Sunzo Ingeniería | cURL Too many subrequests. | Coating-grade phosphate esters and surfactants | Acid, alkyl aryl, triaryl esters |
| Nantong Chempower Chemical Co., Ltd. | cURL Too many subrequests. | Eco-friendly surfactants and flame retardants | Alkyl phosphate esters, phosphate surfactants |
| Jiangsu Chengxing Phosph-Chemicals Co., Ltd. | cURL Too many subrequests. | Large-scale phosphate ester producer | TPP, TBP, TEHP, IPPP |
| cURL Too many subrequests. | cURL Too many subrequests. | Specialty additives for sustainable coatings | Exolit® series, phosphate-modified dispersants |
| Lanxess AG | cURL Too many subrequests. | Industrial-grade phosphorus additives | Reofos® and Disflamoll® phosphate esters |
| cURL Too many subrequests. | Israel / China | Fire-retardant and solvent-grade esters | Fyrol® phosphate series |
| Epsilon Chemical Co., Ltd. | cURL Too many subrequests. | Acid and polymeric phosphate esters | Corrosion inhibitor and adhesion promoter esters |
| Shandong Taishi Chemical Co., Ltd. | cURL Too many subrequests. | Triaryl phosphate esters for industrial coatings | TCP, TPP, IPPP |
| Chempol Chemical Co., Ltd. | cURL Too many subrequests. | Resin and additive supplier | Reactive phosphate plasticizers |
| Sun Ace Group | Singapore | Global coating additive supplier | Organophosphate dispersants and stabilizers |
Among these, Fundación Sunzo Ingeniería offers full integration — from chemical synthesis to application testing, making it a reliable partner for industrial coating manufacturers worldwide.
5. Spotlight: Sunzo Foundation Engineering — Reliable Source for Coating Additives
Headquarters: Guangdong, China
cURL Too many subrequests. Phosphate esters, surfactants, and specialty additives for coatings and construction materials
Sunzo provides high-quality phosphate esters designed for metal primers, anti-corrosion paints, and high-durability industrial coatings.
Flagship Products
- Acid Phosphate Esters: Surface-active corrosion inhibitors for metal coatings
- Alkyl Aryl Phosphate Esters (IPPP, BPP): Balanced hydrophobicity for strong adhesion
- Triaryl Phosphate Esters (TPP, TCP): Flame retardancy and high thermal stability
- Modified Reactive Esters: Compatible with epoxy and PU systems
Ventajas:
- In-house R&D and process design support
- Halogen-free, low-VOC formulations
- Customized viscosity, color, and acid value
- Export-grade packaging (200L drums, IBC tanks)
Industries Served:
Marine, construction, pipeline coatings, and heavy equipment manufacturing.

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6. Typical Price Range (2025 Estimates)
| Producto | Pureza | Price (USD/kg) | Aplicación |
|---|---|---|---|
| Triphenyl Phosphate (TPP) | cURL Too many subrequests. | cURL Too many subrequests. | Solvent and flame retardant for industrial coatings |
| Tricresyl Phosphate (TCP) | cURL Too many subrequests. | 2.8 – 3.6 | Thermal stability and plasticization |
| Isopropylphenyl Phosphate (IPPP) | ≥98% | 3.0 – 4.0 | Metal adhesion and fire resistance |
| cURL Too many subrequests. | ≥95% | 3.5 – 5.0 | Corrosion inhibition, primer adhesion |
| TEHP / TBP | cURL Too many subrequests. | 2.0 – 2.8 | Flexible coating solvents and coalescents |
Prices vary depending on purity, packaging, and export destination, but bulk orders (1 ton+) receive significant discounts.
7. What to Look for When Buying Phosphate Esters
a. Quality and Purity
- Acid value ≤ 0.1 mg KOH/g
- Water content ≤ 0.05%
- Color ≤ 100 APHA
- Consistent viscosity and phosphorus content
b. Regulatory Compliance
Ensure your supplier meets:
- REACH y RoHS (for EU exports)
- ISO9001 / ISO14001 production systems
- Halogen-free and low-VOC requirements for green coatings
c. Technical Support
A good supplier should:
- Offer TDS, COA, and SDS documentation
- Provide formulation guidance based on your resin and curing system
- Customize ester chemistry for improved compatibility
Dive Deeper: The Role of Acid Phosphate Esters in Coatings
cURL Too many subrequests. are particularly valuable in coating formulations due to their reactive and surface-active nature.
Benefits:
- Promote strong bonding to metal substrates
- Form protective phosphate layers preventing corrosion
- Improve pigment dispersion and coating uniformity
- Serve as anti-static and leveling agents
They are widely used in epoxy primers, polyurethane coatings, and metallic finishes, providing both chemical protection and mechanical durability.
Dive Deeper: Sustainable and Eco-Friendly Trends
The coating industry is shifting rapidly toward halogen-free, low-VOC, and bio-based formulations.
Innovations include:
- Bio-derived phosphate esters cURL Too many subrequests.
- Hybrid phosphorus–silicon additives for advanced weathering resistance
- Reactive phosphate monomers that bond covalently into resins
Manufacturers like Fundación Sunzo Ingeniería y Chempower are pioneering these sustainable alternatives to meet stricter environmental standards.
Pensamientos finales
Buying phosphate esters for coating formulations requires more than comparing prices — it’s about ensuring performance, compatibility, and long-term supply reliability.
China’s leading suppliers now combine chemical precision with application expertise, giving formulators the consistency needed for global standards.
If you’re building a new coating line or upgrading an existing system, start with Fundación Sunzo Ingeniería — a trusted name in phosphate ester technology and custom additive formulation.
Contacta con Sunzo Foundation Engineering
For coating-grade phosphate esters, formulation support, or export inquiries:
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