WATERBORNE WHITE DTM based on INOKEM-3304 WITH ASCONIUM-114

This waterborne white direct-to-metal (DTM) coating is formulated to protect cold-rolled steel from corrosion and rust, designed for durability under harsh conditions like salt-spray and high humidity.

Key Components:

• Deionized Water: Solvent
• Tegodisperse 750W: Dispersing agent
• BYK 024: Defoamer
• AMP90: Neutralizer
• KRONOS 2190: Titanium dioxide (white pigment)
• Omyacoat 850 OG: Calcium carbonate (extender)
• Luzenac HAT T84: Talcum (filler)
• Asconium-114: Anticorrosion additive
• Inokem 3304: Binder
• Borchi Oxycoat 1101: Dryer
• Coapur 830W: Thickener
• Ascotran-H10: Flash-rust inhibitor

Preparation Steps:

1. Mill-Base Preparation:
   • Mix deionized water, dispersing agent, defoamer, neutralizer, pigments, and fillers.
   • High shear mixing for 10-15 minutes.
   • Add anticorrosion additive.
2. Let-Down Stage:
   • Gradually add binder, defoamer, water, dryer, thickener, and flash-rust inhibitor with continuous stirring.

Performance Testing:

• Salt-Spray Test: 600 hours on cold-rolled steel, 80-85 µm DFT
• Humidity Test (DIN EN ISO 6270): 600 hours on CRS, 80-85 µm DFT

Paint Properties:

• PVC: ~17%
• PVC/CPVC Ratio: ~0.3
• Gloss Level: 90 (60°)