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High hydroxyl functionality for excellent crosslinking density with melamine and polyisocyanate curing agents.
Outstanding weather resistance and UV stability, suitable for long-term outdoor exposure.
Low viscosity at high solids content, enabling efficient solvent reduction and improved VOC performance.
Excellent compatibility with common acrylic and polyester resins, facilitating formulation flexibility.
Superior gloss retention and color stability after thermal curing and accelerated aging tests.
Automotive OEM topcoats and clearcoats requiring high durability and aesthetic performance.
Industrial maintenance coatings for metal substrates in architectural and infrastructure applications.
High-performance coil coatings for pre-painted steel used in building panels and appliances.
Powder coating hybrid systems where acrylic backbone enhances flow and film integrity.
Refinish coatings demanding rapid cure response and exceptional chip resistance.
| Chemical Type | Hydroxyl-functional acrylic copolymer |
| Product Form | Liquid resin solution |
| Appearance | Clear, pale yellow liquid |
| Solvent System | Standard aromatic-free or low-aromatic solvent blend (e.g., xylene/PGMEA mix) |
| Solids Content (wt%) | 55–60% |
| Hydroxyl Value (mg KOH/g) | 75–85 |
| Acid Value (mg KOH/g) | < 5 |
| Viscosity (mPa·s, 25°C) | 3,000–5,000 |
Q1: What is the primary function of OLESTER Q612 in coating formulations?
A: OLESTER Q612 serves as a hydroxyl-functional acrylic resin designed to act as a reactive binder in two-component polyurethane and polyester-based coating systems, contributing to film formation, crosslink density, and overall mechanical durability.
Q2: Is OLESTER Q612 compatible with common isocyanate hardeners?
A: Yes, it exhibits good reactivity and compatibility with aliphatic and aromatic isocyanate crosslinkers, including HDI-based and IPDI-based polyisocyanates, enabling formulation flexibility for both indoor and outdoor applications.
Q3: How does OLESTER Q612 influence the final film properties of cured coatings?
A: It enhances hardness, gloss retention, and chemical resistance while supporting balanced flexibility and adhesion across diverse substrates such as metal, plastic, and wood—particularly where high-performance topcoats or clearcoats are required.
Q4: Can OLESTER Q612 be used in low-VOC or solvent-reduced systems?
A: Yes, it is formulated to support modern environmental requirements and can be effectively incorporated into solvent-borne systems with reduced aromatic content, as well as certain high-solids and hybrid solvent/water-compatible formulations.
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