WATERBORNE CLEAR-COATING based on ESACOTE PU61 WITH ASCONIUM-114

This formulation provides instructions for creating a waterborne clear-coating with long-term protection against corrosion, as demonstrated by its salt-spray performances on both cold-rolled and HD galvanized steel substrates. The inclusion of ASCONIUM-114 improves adhesion, as evidenced by the adhesion testing results. Manufacturers and users can use this formulation to produce coatings suitable for various applications, emphasizing the importance of conducting tests to validate performance under real-world conditions.

Product Name:

• ESACOTE PU61 WITH ASCONIUM-114

Reference:

• WBPU1004T

Date:

• 2020-07

Type:

• Guiding Formulation Waterborne Clear-Coating

Manufacturing Instructions

STEP 1:

• Mix the following ingredients separately while stirring, and set aside:
  • AMP90 - Neutralizer (Supplier: ANGUS) - 0.3
  • ASCONIUM-114 - Anticorrosion Additive (Supplier: ASCOTEC) - 2.5

STEP 2:

• Into the let-down tank, add the following in order, progressively, with continuous stirring:
  • ESACOTE PU61 - Binder (Supplier: LAMBERTI) - 77.0
  • STEP-1 Premix
    • Deionized Water - 13.9
    • Butyldiglycol - Co-solvent (Supplier: Dow Chemicals) - 3.9
    • BYK 346 - Wetting Agent (Supplier: BYK Chemie) - 0.3
    • ASCOTRAN-H10 - Flash-rust Inhibitor (Supplier: ASCOTEC) - 0.3
    • VISCOLAM PS 166 - Thickener (Supplier: LAMBERTI) - 1.2
    • VISCOLAM PS 202 - Thickener (Supplier: LAMBERTI) - 0.6

Salt-Spray Performances

Cold-rolled steel:

• Duration: 200 hours
• Layer: 1 layer
• Dry Film Thickness (DFT): 40-45 µm

HD Galvanized steel:

• Duration: 650 hours
• Layer: 1 layer
• Dry Film Thickness (DFT): 35-40 µm

Adhesion Testing Results

ISO 2409 24h after testing:

• With ASCONIUM-114: GR0 (Adhesion rating)