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High hydroxyl functionality for robust crosslinking with melamine and polyisocyanate curing agents.
Excellent compatibility with common solvent-based coating systems and nitrocellulose blends.
Superior UV resistance and long-term gloss retention in exterior architectural and automotive topcoats.
Low volatile organic compound (VOC) profile, supporting compliance with stringent environmental regulations.
Consistent batch-to-batch reproducibility and narrow molecular weight distribution for predictable film formation.
Automotive OEM and refinish clearcoats and basecoats.
High-performance industrial maintenance coatings for metal substrates.
Architectural premium exterior wall and façade coatings.
Plastic coatings for automotive interior trim and consumer electronics housings.
Two-component polyurethane wood finishes for furniture and flooring.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Liquid solution in aromatic hydrocarbon solvents |
| Appearance | Clear, colorless to pale yellow liquid |
| Hydroxyl Value (mg KOH/g) | 65–75 |
| Acid Value (mg KOH/g) | < 5 |
| Non-Volatile Content (% w/w) | 55 ± 2 |
| Viscosity (mPa·s, 25°C, #4 spindle, 20 rpm) | 4,000–6,000 |
| Primary Applications | 2K PU and melamine-cured high-gloss coatings |
Q1: What is the primary function of AC3170 in coating formulations?
A: AC3170 serves as a hydroxyl-functional acrylic resin designed to act as a reactive binder in two-component polyurethane and polyester-based coating systems. It contributes to film formation, enhances crosslink density, and improves mechanical properties such as hardness, flexibility, and chemical resistance.
Q2: Is AC3170 compatible with common isocyanate hardeners?
A: Yes, AC3170 is formulated for compatibility with aliphatic and aromatic isocyanate crosslinkers, including HDI-based and IPDI-based polyisocyanates. Optimal performance is achieved when matched with hardeners offering suitable NCO/OH ratios and reactivity profiles for the intended cure schedule.
Q3: How does AC3170 perform in high-gloss, weather-resistant topcoats?
A: Due to its acrylic backbone and controlled molecular architecture, AC3170 supports excellent gloss retention, UV stability, and color clarity—making it well-suited for demanding automotive, industrial, and architectural topcoat applications where long-term exterior durability is required.
Q4: Can AC3170 be used in low-VOC or solvent-reduced systems?
A: Yes, AC3170 is available in solvent-borne grades with moderate solids content and can be adapted into reduced-solvent or high-solids formulations. Its solubility profile allows formulation flexibility with common organic solvents, supporting VOC compliance strategies without compromising film integrity.
Q5: What are typical handling and storage recommendations for AC3170?
A: Store in tightly sealed containers in a cool, dry, and well-ventilated area away from direct sunlight and ignition sources. Avoid prolonged exposure to moisture or strong oxidizing agents. For best results, use within 12 months of manufacture date and maintain recommended temperature conditions during storage.
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E-mail: wangxingqiang@ericwchem.com
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