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Waterborne polyisocyanate-based crosslinker offering excellent compatibility with acrylic, polyester, and hybrid waterborne resins.
Low VOC formulation compliant with global environmental regulations including EU REACH and US EPA standards.
Fast ambient-cure capability with good pot life (≥4 hours at 25°C when mixed with typical waterborne hydroxyl resins).
Delivers superior hardness, chemical resistance, and gloss retention in final cured films.
Stable dispersion in water without organic co-solvents—reduces odor and improves workplace safety.
Automotive OEM and refinish coatings requiring low-emission, high-performance curing.
Industrial maintenance coatings for metal substrates in architectural and infrastructure projects.
Wood coatings for furniture and cabinetry where low odor and rapid handling are critical.
Plastic coatings for automotive interiors and consumer electronics enclosures.
General-purpose waterborne industrial topcoats demanding balanced cure speed and film integrity.
| Chemical Type | Aliphatic water-dispersible polyisocyanate (HDI-based) |
| Product Form | Opaque white to light yellow liquid dispersion |
| Appearance | Homogeneous, non-settling dispersion |
| pH (10% aqueous dilution) | 7.0 – 8.5 |
| NCO Content (wt%) | 9.5 – 10.5 |
| Viscosity (25°C, mPa·s) | 1,200 – 2,500 (Brookfield RVT, spindle #3, 20 rpm) |
| Non-Volatile Content (wt%) | 35.0 – 38.0 |
| Storage Stability | ≥12 months at 5–30°C in unopened original container |
Q1: What types of waterborne resins is KY-2655 compatible with?
A: KY-2655 is specifically formulated for use with waterborne polyurethane dispersions (PUDs), acrylic emulsions, and hybrid acrylic-PUD systems. It demonstrates good compatibility and reactivity across a broad pH range (typically 7.5–9.0) and supports efficient crosslinking without significant viscosity instability.
Q2: How does KY-2655 affect film formation and final film properties?
A: KY-2655 enhances crosslink density in the cured film, leading to improved hardness, chemical resistance, and scrub resistance. It also contributes to better block resistance and reduced tackiness at ambient temperatures, while maintaining good flexibility and adhesion on common substrates such as wood, metal, and plastic.
Q3: Is KY-2655 suitable for low-VOC or zero-VOC formulations?
A: Yes — KY-2655 is a water-based, non-solvent curing agent with negligible VOC content. It supports formulators in meeting stringent low-VOC regulatory requirements for architectural, industrial, and furniture coatings without compromising cure performance or shelf stability.
Q4: What is the recommended addition method and storage guidance?
A: KY-2655 should be added to the formulation under gentle agitation during the final stage of production, preferably after neutralization and cooling. Avoid high-shear mixing to prevent foam entrapment. Store in tightly sealed containers at 5–30°C; protect from freezing and prolonged exposure to direct sunlight. Shelf life is typically 12 months under proper storage conditions.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
