Coil coating resin
CJ-675 HDP Topcoat Resin
CJ-675 is a saturated polyester resin for HDP topcoat systems, supporting high gloss, strong adhesion, gloss and color retention, weather resistance, chalking resistance, and upgraded outdoor durability.
- High gloss
- Strong adhesion
- Weather resistance
- Gloss & color retention
- Chalking resistance
What CJ-675 is built for
CJ-675 is developed for HDP topcoat systems that require high gloss, strong adhesion, gloss and color retention, chalking resistance, and stronger outdoor weathering performance. It provides an upgraded resin path for projects requiring higher durability targets than standard PE systems.
Benefits
Weather resistance
Supports stronger outdoor performance for HDP topcoat systems.
Gloss & color retention
Helps maintain surface appearance, color consistency, and gloss performance.
Chalking resistance
Helps reduce chalking risk under demanding outdoor conditions.
Strong adhesion
Supports reliable bonding performance in high — performance topcoat systems.
Typical applications
Construction panels
Used in roofing sheets, wall panels, and other prepainted building materials requiring upgraded outdoor durability and appearance retention.
Higher outdoor exposure applications
Suitable for exposed metal applications facing stronger UV, heat, humidity, and weathering conditions.
Higher durability target projects
Used in projects requiring stronger appearance retention and higher outdoor durability targets than standard PE systems.
Technical highlights
Gloss & color retention
Supports gloss performance and color consistency in high-performance topcoat systems.
UV resistance
Helps improve resistance against UV exposure and outdoor weathering.
Chalking resistance
Helps reduce chalking risk under demanding outdoor conditions.
Weather resistance
Supports enhanced outdoor durability for upgraded topcoat systems.
Flexibility
Supports forming and fabrication requirements while maintaining coating integrity.
Processing stability
Supports stable HDP topcoat production, curing response, and coil line use.
Technical data & next steps
CJ-675 HDP-Type Topcoat Resin
Representative technical data for this grade. Confirm final specifications, processing conditions, weathering data, matching topcoat formulation, and application guidance in product documents or TDS.
Representative technical dataShowHide
| Item | Representative data | Test method |
|---|---|---|
| Appearance | Transparent liquid, free of mechanical impurities | GB/T 1721-2008 |
| Viscosity (Gieseking tube, 25℃), s | 18–25 | — |
| Solid content % | 60±2 | GB/T 1725-2007 |
| Acid value | ≤10 mgKOH/g | GB/T 2895-2008 |
| Packaging | 200 kg / barrel | — |
The above values are representative product data. Final specifications, processing conditions, weathering data, matching topcoat formulation, and application guidance should be confirmed through product documents or TDS.
Product Documents & Testing Support Available Upon RequestShowHide
Request product sheets, TDS, SDS/MSDS, COA, internal test summaries, weathering data discussion, third-party testing discussion, matching topcoat formulation, or laboratory sample evaluation.
| Document | Availability |
|---|---|
| Product Sheet | Request / controlled sharing |
| TDS | Request only |
| SDS / MSDS | Request only |
| COA | Available by batch |
| Internal Test Summary | Upon request |
| Weathering Data | Product data or project testing discussion |
| Third-party Testing | Project-based discussion |
| Matching Topcoat Formulation | Technical discussion |
| Laboratory Sample | Small sample for initial evaluation |