Coil coating resin
CJ-563 Primer Resin
Designed for primer coating systems—providing strong base adhesion, interlayer compatibility, and stable processing performance in coil coating applications.
What is CJ-563
CJ-563 is a saturated polyester resin developed for primer coating systems in coil coating applications. It is designed to build reliable adhesion between the metal substrate and the upper coating structure while supporting stable processing performance.
As a primer resin, CJ-563 focuses on base adhesion, flexibility, epoxy compatibility, and practical coating stability, making it suitable for metal coating systems where a strong foundation layer is required.
Why CJ-563 Works for Primer Systems
Strong adhesion to metal substrates
Excellent flexibility for primer
layer forming needs
Good compatibility with epoxy resin systems
Good solvent resistance for practical processing
Stable curing window for coil line application
Position in the Coating Structure
CJ-563 is designed for the primer layer in a complete coil coating system. In a typical coating structure: Topcoat provides weather resistance and appearance. Primer creates the key bond between the metal substrate and the upper coating layers. Back coat supports reverse-side protection and handling performance. By serving the primer layer, CJ-563 helps establish adhesion, interlayer compatibility, and coating system stability from the base up.
Typical Applications
- Construction panel coating systems
- Home appliance panel coating systems
- Industrial metal coating structures
- Prepainted steel systems requiring stable base adhesion
- Primer formulations matched with epoxy resin systems
Primer Role in System Design
Selecting a suitable primer resin helps improve the bond between metal substrate and coating layers, which is critical for coating stability, process consistency, and long-term system performance.
When matched with appropriate pretreatment, epoxy components, topcoat chemistry, and curing conditions, CJ-563 supports practical primer system design in coil coating production.
CJ-563 is suitable for projects that require a balanced combination of adhesion, flexibility, solvent resistance, and stable line application in the primer layer.
Technical highlights
Representative reference ranges appear on product pages or in TDS documents. Summary below — request a full TDS or product sheet from our team.
Appearance
Light yellow transparent liquid
Viscosity (Ford cup, 25°C)
18–25 s
Solid content (Wt)
60±2%
Acid value
≤10 mgKOH/g
Flexibility
T-bend 1–2T
Epoxy compatibility
Good
Curing window
±25°C
Packaging
200 kg/barrel
Technical data & next steps
Use the links below for matching coatings, selection support, or to request technical documents.