CYMEL® 202 is a methylated/n-butylated, high imino melamine crosslinker supplied in n-butanol. It is designed for various coating applications, offering fast cure response, low formaldehyde release, and excellent film properties. Here are the key details about this product:
Product Description:
- Chemical Composition: Methylated/n-butylated melamine crosslinker
- Solvent: n-butanol
- Properties: Hydrophobic nature, high reactivity, high solids content, low formaldehyde release during curing
Benefits:
- Very fast cure response
- Medium to high solids content
- Low formaldehyde release
Application Areas:
- Can and container coatings
- General industrial coatings
- Automotive coatings
Physical Properties:
- Appearance: Clear liquid
- Non-volatile by weight: 80-84%
- Viscosity at 23°C: 2500-7500 mPa.s
- Free formaldehyde: < 0.5%
- Color (APHA): ≤ 70
Solubility:
- Soluble in alcohols, esters, ketones, aromatic hydrocarbons
- Partially soluble in aliphatic hydrocarbons
- Insoluble in water
Compatibility:
- Good compatibility with acrylic, alkyd, polyester, and epoxy resins
Backbone Polymer Selection:
- Effective crosslinker for backbone polymer resins containing hydroxyl, carboxyl, and amide functional groups
Catalysis:
- May not require additional acid catalyst
- If needed, addition of CYCAT® 296-9 catalyst recommended (0.5 - 1.0% based on total resin solids)
Formulation Stability:
- Stability can be enhanced by the addition of primary alcohols, amines, or a combination of these
- Recommended amines include TEA or DMEA (0.5 - 1.0% on total binder solids)
Storage Stability:
- Shelf life of 720 days from the date of manufacture when stored below 32°C
- Viscosity may increase at lower temperatures but will reduce upon warming
Disclaimer: The information provided is for informational purposes only, and users should conduct their own tests to determine suitability for specific applications. Allnex excludes liability with respect to the use of the information contained herein.
