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Highly reactive melamine-formaldehyde resin offering excellent cure speed at moderate baking temperatures.
Low formaldehyde emission profile, supporting compliance with stringent environmental and occupational health requirements.
Superior compatibility with acrylic, polyester, and alkyd resins in solventborne coating systems.
Delivers outstanding hardness, chemical resistance, and gloss retention in thermoset finishes.
Designed for low-viscosity formulations, enabling high-solids content and improved application efficiency.
Automotive OEM and refinish topcoats requiring rapid through-cure and exceptional durability.
Industrial maintenance coatings for metal substrates exposed to harsh environments.
Appliance coatings demanding high-gloss, scratch resistance, and color stability.
General-purpose coil coatings where balanced flow, leveling, and crosslink density are critical.
Powder coating hybrid systems seeking enhanced film integrity and reduced curing energy.
| Chemical Type | Melamine-formaldehyde crosslinker |
| Product Form | Liquid |
| Appearance | Clear, pale yellow to light amber solution |
| Solvent Content | Proprietary alcohol/butyl acetate blend |
| Non-Volatile Content (NV) | 75–80 wt% (as received) |
| Viscosity (25°C) | 100–250 mPa·s (Brookfield LV, spindle #3, 60 rpm) |
| pH (10% in water) | 7.5–8.5 |
| Primary Applications | Thermosetting solventborne industrial coatings |
Q1: What is the primary function of CYMEL UB-24-BX in coating formulations?
A: CYMEL UB-24-BX is a highly reactive, low-viscosity melamine-formaldehyde amino resin designed to act as a crosslinker for hydroxyl- and carboxyl-functional acrylic, polyester, and alkyd resins. It enables rapid cure at moderate baking temperatures while contributing to excellent hardness, chemical resistance, and gloss retention.
Q2: How does CYMEL UB-24-BX differ from conventional high-solids melamine resins?
A: Unlike many standard melamine crosslinkers, CYMEL UB-24-BX offers enhanced compatibility with low-solvent and high-solids systems due to its tailored molecular structure and reduced free formaldehyde content. Its lower viscosity also supports improved formulation stability and easier handling without excessive solvent dilution.
Q3: Is CYMEL UB-24-BX suitable for oven-cured industrial coatings requiring high durability?
A: Yes — it is widely used in demanding industrial applications such as appliance, automotive refinish, and coil coatings where high film integrity, mar resistance, and long-term weatherability are required. Its reactivity profile allows efficient crosslinking at typical bake schedules of 140–180 °C for 10–30 minutes.
Q4: What catalysts are typically recommended for optimal performance with CYMEL UB-24-BX?
A: Acid catalysts such as p-toluenesulfonic acid (p-TSA), blocked acids, or latent acidic co-catalysts are commonly employed to accelerate the crosslinking reaction. Catalyst selection and dosage depend on the specific resin system, desired pot life, and cure schedule — formulation testing is recommended to optimize balance between storage stability and cure speed.
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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
