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High solids content for efficient formulation and reduced VOC emissions.
Excellent compatibility with common crosslinkers including melamine and polyisocyanates.
Superior gloss retention and weather resistance in outdoor applications.
Good flow and leveling characteristics for smooth film formation.
Stable viscosity profile over extended storage periods at ambient temperature.
Automotive OEM clearcoats and topcoats.
Industrial maintenance coatings for metal substrates.
Architectural high-performance exterior wall coatings.
Plastic coatings requiring adhesion and flexibility.
UV-curable hybrid coating systems (as co-resin).
| Chemical Type | Acrylic copolymer resin |
| Product Form | Liquid solution |
| Appearance | Clear, pale yellow liquid |
| Solvent System | Xylene / butyl acetate blend |
| Solids Content (wt%) | 60 ± 2% |
| Acid Value (mg KOH/g) | 8–12 |
| Viscosity (mPa·s, 25°C) | 4,000–6,000 (Brookfield, #2 spindle, 20 rpm) |
| Specific Gravity (25°C) | 0.98–1.02 |
Q1: What is the primary function of DIC ZHB-377 Acrylic Resin in coating formulations?
A: DIC ZHB-377 is a water-dispersible acrylic resin designed primarily as a film-forming binder and rheology modifier in waterborne industrial and decorative coatings. It contributes to improved scrub resistance, gloss retention, and low-temperature film formation without requiring coalescing agents.
Q2: Is DIC ZHB-377 compatible with common pigment dispersions and other water-based resins?
A: Yes, ZHB-377 exhibits good compatibility with conventional anionic and nonionic pigment dispersants, as well as with other waterborne acrylics, vinyl acetate copolymers, and polyurethane dispersions. Compatibility testing under actual formulation conditions is recommended to confirm stability and performance synergy.
Q3: How should DIC ZHB-377 be incorporated into a coating formulation?
A: ZHB-377 is typically added during the let-down stage, after pigment grinding. It can be introduced directly or pre-diluted with water or a small amount of co-solvent. Gentle mixing is advised to avoid excessive air entrapment; high-shear dispersion is generally not required.
Q4: Does DIC ZHB-377 require neutralization for pH stability?
A: ZHB-377 is supplied in a self-stabilized, near-neutral form and does not require external neutralization for typical use. However, minor pH adjustment (e.g., to 7.5–8.5) may be beneficial in some formulations to optimize viscosity response or long-term storage stability.
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