White glossy WB two-pack PU topcoat, with high chemical resistance

Starting formulation of an Industrial Coating labeled "Industrial Coatings EU SF 1.26." It's an aqueous white glossy two-pack PU topcoat designed with high chemical resistance. The formulation is based on Bayhydrol A XP 2695 and Bayhydur 304 / XP 2759.

Components of Comp. 1:

1. Bayhydrol A XP 2695
2. Dimethylethanolamin
3. Surfynol 104 BC
4. Borchi® Gel 0621
5. Borchi® Gol LA 200
6. Borchi® Gen 0851
7. Sachtleben R-KB-4
8. Water

Components of Comp. 2:

1. Bayhydur 304
2. Bayhydur XP 2759
3. Methoxy propyl acetate

The production indications involve specific steps for preparing Comp. 1 and Comp. 2, including mixing, dispersion, and filtration.

Application: The coating is intended for spraying using an HVLP-pneumatic flow cup spray gun with a nozzle size of 1.4mm and an air pressure of approximately 1.9 bar.

Technical Data:

• NCO: OH - ratio: 1.5:1
• Mixing ratio (comp. 1 : comp. 2): 10:4
• Pigment : Binder - ratio: 0.7:1
• Spray viscosity: Approximately 20 s (DIN 53211-cup 4 mm, at 23 °C)
• VOC (volatile organic compound): Approximately 186 g/l (calculated acc. Directive 1999/13/EC)
• Solid content on application: Approximately 50%
• Drying time: 0.5 h / 1 h (DIN 53150; TG 1 / TG 3)
• Gloss and Haze: 20° / 60° / Haze (DIN EN ISO 2813): 82 / 90 / 19
• Film Hardness: After 1 day / 14 days (pendulum hardness tester-König; DIN EN ISO 1522): 130 s / 175 s

Raw materials are sourced from various suppliers, and there's a note emphasizing the need for independent testing due to potential variations in product usage among customers. Additionally, sales are subject to standard terms unless explicitly agreed otherwise in writing.