Water thinnable two-pack PU clear coat / top coat (white)

This formulation describes a water-thinnable two-pack polyurethane (PU) clear coat or topcoat in white. It's formulated using Bayhydrol A 145 and Bayhydur 304. Here's a simplified description:

Component 1 (Clear Coat):

• Bayhydrol A 145
• Surfynol 104 BC
• Borchi® Gel 0620
• Borchi® Gol LA 50, Borchi® Gol LA 200 (7:3, 10% in butyl glycol)
• Borchi® Gen 0851
• Sachtleben R-KB-4

Component 2 (White Coat):

• Bayhydur 304
• Dipropylene glycol dimethyl ether

Water (for thinning):

• Clear Coat
• White Coat

Application: Compressed-air spraying

Data:

• NCO: OH - ratio: 1.5 : 1
• Spray viscosity, DIN 53211-cup 4mm, at 23°C
• Solids content, 1.5 h / 110°C
• Density, at 20°C
• VOC-content, DIN ISO11890-1
• Pot life
• Drying at room temperature
• Pendulum hardness (König method) DIN EN ISO 1522 (100 µm on glass) over time
• Haze and Gloss (60° angle), DIN 67530 / ISO 2813 (100 µm on glass)

Suppliers:

• Covestro
• Air Products
• Milliken
• Venator
• Clariant