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High-solids, low-viscosity alkyd-modified polyester resin for excellent application performance.
Outstanding gloss retention and color stability under UV exposure.
Good compatibility with amino resins, melamines, and common crosslinkers used in industrial coatings.
Enables fast cure at moderate baking temperatures (140–160 °C), supporting high-throughput production.
Delivers balanced flexibility, hardness, and chemical resistance in thermoset film formation.
Automotive OEM clearcoats and topcoats.
Industrial maintenance coatings for metal furniture and appliances.
General-purpose coil coatings requiring good formability and weather resistance.
Prefinished building panels and architectural cladding systems.
High-performance general industrial enamels for machinery and equipment.
| Chemical Type | Alkyd-modified saturated polyester resin |
| Product Form | Liquid (solution in aromatic hydrocarbons) |
| Appearance | Clear, pale yellow to amber liquid |
| Non-Volatile Content (NV %) | 63–67 % (by weight, 1 hr @ 125 °C) |
| Viscosity (25 °C) | 2,500–4,500 mPa·s (Brookfield RV, spindle #3, 20 rpm) |
| Acid Value | 8–12 mg KOH/g |
| Hydroxyl Value | 100–120 mg KOH/g |
| Solubility | Compatible with xylene, Solvesso™ 100, and similar aromatic solvents |
Q1: What is the primary function of ROSKYDAL E 65 in coating formulations?
A: ROSKYDAL E 65 is a reactive polyester resin designed to act as a crosslinker for hydroxyl-functional resins—particularly in high-performance thermoset coatings. It contributes to enhanced hardness, chemical resistance, and film integrity upon curing.
Q2: Is ROSKYDAL E 65 suitable for low-bake or ambient-cure systems?
A: ROSKYDAL E 65 is formulated for thermal cure systems and typically requires elevated temperatures (e.g., 120–160 °C) to achieve full crosslinking. It is not intended for true ambient-cure applications without catalysis or co-reactants, and performance in low-bake conditions depends heavily on catalyst selection and formulation balance.
Q3: Which types of resins does ROSKYDAL E 65 commonly crosslink with?
A: ROSKYDAL E 65 is compatible with a broad range of hydroxyl-terminated resins, including acrylics, polyesters, and alkyds. Optimal compatibility and reactivity are observed with medium-to-high hydroxyl value resins, especially in coil, general industrial, and appliance coating systems.
Q4: How should ROSKYDAL E 65 be stored and handled to maintain stability?
A: Store in original sealed containers at temperatures between 10 °C and 30 °C, away from moisture, strong oxidizers, and direct sunlight. Prolonged exposure to humidity or elevated temperatures may affect viscosity and shelf life. Always follow standard industrial handling practices for reactive organic materials.
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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
