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Highly reactive melamine-formaldehyde resin offering excellent cure speed at low to moderate baking temperatures.
Provides superior hardness, scratch resistance, and chemical resistance in cured coatings.
Excellent compatibility with polyester, acrylic, and alkyd resins for broad formulation flexibility.
Low formaldehyde emission profile, supporting compliance with stringent environmental and safety regulations.
Good storage stability in solvent-based systems when properly formulated and handled.
Automotive OEM and refinish topcoats requiring high-gloss, durable finishes.
Industrial coil coatings for pre-painted metal substrates.
Appliance coatings demanding excellent mar resistance and cleanability.
General-purpose can and container coatings for food and beverage packaging.
Wood furniture and panel coatings requiring fast cure and excellent clarity.
| Chemical Type | Melamine-formaldehyde crosslinker |
| Product Form | Clear, low-viscosity liquid |
| Appearance | Colorless to pale yellow, transparent liquid |
| Solvent Content | Proprietary aromatic hydrocarbon blend |
| Non-Volatile Content (NV) | Approx. 80–84 wt% |
| Viscosity (25°C) | 200–400 mPa·s (cP) |
| Acid Number | < 1 mg KOH/g |
| Primary Applications | Thermosetting industrial coatings, automotive, coil, and appliance finishes |
Q1: What is the primary function of CYMEL 285-100 in coating formulations?
A: CYMEL 285-100 is a highly reactive melamine-formaldehyde crosslinker designed to enhance hardness, chemical resistance, and thermal stability in thermosetting coatings—especially in high-performance industrial and coil coating systems.
Q2: Is CYMEL 285-100 compatible with hydroxyl-functional acrylic or polyester resins?
A: Yes, it exhibits excellent compatibility and reactivity with standard hydroxyl-containing resins commonly used in baking finishes. Its low-viscosity liquid form facilitates homogeneous blending without requiring excessive solvent dilution.
Q3: What are typical cure conditions when using CYMEL 285-100?
A: It is formulated for efficient cure at elevated temperatures, generally in the range of 140–180 °C, with full crosslinking typically achieved within 15–30 minutes depending on film thickness, substrate, and catalyst selection.
Q4: Does CYMEL 285-100 require an acid catalyst for optimal performance?
A: While it can react uncatalyzed at higher temperatures, the use of a suitable acid catalyst—such as p-toluenesulfonic acid or blocked sulfonic acids—is strongly recommended to lower cure temperature, improve through-cure, and maximize crosslink density.
Q5: How should CYMEL 285-100 be stored to maintain stability and shelf life?
A: Store in tightly sealed original containers at temperatures between 5 °C and 30 °C, away from moisture, strong oxidizing agents, and direct sunlight. Prolonged exposure to humidity or elevated temperatures may lead to premature condensation and viscosity increase.
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E-mail: wangxingqiang@ericwchem.com
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