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This is a formulation for an automotive coating, specifically a water-thinnable white two-pack polyurethane (PU) topcoat. It is based on Bayhydrol A 145 and Bayhydur 304. Here's a breakdown:

Components:

• Component 1: Bayhydrol A 145, Surfynol 104 BC, Borchi® Gel THIX 921, Borchi® Gol LA 200, Borchi® Gen 0851, Sachtleben R-KB-4.
• Component 2: Bayhydur 304, Butoxyl (Methoxy butyl acetate).
• Water (for thinning).

Production:

• Component 1 is placed in a mixing vessel and mixed with components 2-6 for 20 minutes at 2000 rpm for pre-dispersion, followed by dispersion for 60 minutes in a bead mill. It's then left to rest for one day for deaeration.
• Component 2 is stirred for approximately 10 minutes in a dissolver for incorporation.
• Water is added to adjust the spray viscosity.

Data:

• NCO : OH - ratio is 1.5 : 1.
• Spray viscosity: approximately 28 seconds (DIN 53211-cup 4mm, at 23 °C).
• Pendulum hardness (König method) for wet film thicknesses of 100 µm on glass: 64 / 95 / 118.
• Haze and Gloss (20°/60° angle): 10 / 76 / 85.

Suppliers:

• Covestro, Air Products, Milliken, Sachtleben.

This formulation describes an aqueous white two-pack polyurethane (PU) topcoat for automotive coatings. It's based on Bayhydrol A 145 and Bayhydur 304. Here's a summary without percentages:

Components:

• Component 1: Bayhydrol A 145, Surfynol 104 BC, Borchi® Gel PW 25, Borchi® Gol LA 200, Borchi® Gen 0851, Sachtleben R-KB-4.
• Component 2: Bayhydur 304, Dipropylene glycol DME.
• Water (for thinning).

Indications:

• Application involves placing Component 1 in a mixing vessel, stirring in components 2-5, pre-dispersing, dispersing in a bead mill, and deaerating.
• Compressed-air spraying with a 1.3 mm nozzle is recommended, followed by intermediate and final deaeration.
• A light stabilizer (Tinuvin 292) should be added before Component 2.

Technical Data:

• NCO: OH - ratio is 1.5.
• Ratio of Component 1 to Component 2: 4.52:1.
• Flow time: 25 seconds (DIN 53211-cup 4 mm, at 23 °C).
• Cosolvent: 7.6%.
• Density: 1.3 kg/l.
• VOC: 118 g/l.
• pH-value: 8.1.
• Solids content on application: 58%.

Technical Properties:

• Chemical resistance against various substances, evaluated based on test surfaces.
• Drying time: 30 minutes at 60 °C.
• Pendulum hardness: 2 hours: T1 (soft), 7 hours: T3 (hard).
• Film thickness: 73 µm (1 day at room temperature), 121 µm (7 days at room temperature and 16 hours at 50°C).
• Gloss: 78 at 20° angle, visually: 1.
• Haze: 39.

Suppliers:

• Covestro, Air Products, Milliken, Sachtleben, Clariant.

This is a formulation for an automotive clear coat, specifically an aqueous two-pack polyurethane (PU) clear coat. It's based on two main components: Bayhydrol U XP 2766 and Bayhydur XP 2655. Here's a breakdown of its components and key characteristics:

Components:

Component 1:

1. Bayhydrol U XP 2766: Water-based polyol resin.
2. Borchi® Gol LA 2, Borchi® Gol LA 50 , Borchi Gol LA 200: Additives.
3. Water : Used for dilution.

Component 2: 6. Bayhydur XP 2655 : Polyisocyanate hardener.

7. Tinuvin 384-2  and Tinuvin 292 : UV stabilizers.
8. Butoxyl (methoxy butyl acetate) : Solvent for viscosity adjustment.

Production Indications:

• Component 1 is mixed first, followed by the gradual addition of additives and water.
• Component 2 (the hardener) is then stirred in.
• Components 1 and 2 are mixed together for 2 minutes.
• Water may be added to adjust the application viscosity.

Technical Data:

• NCO: OH - Ratio: 1.5:1
• Solid Content on Application: Approximately 45%
• Spray Viscosity: 25 seconds (DIN 53211-cup 4 mm, at 23 °C)
• VOC Content: 164 g/l (calculated according to Directive 1999/13/EC)
• Gloss: 92/95 (20°/60°, DIN EN ISO 2813) on ABS (Bayfoil)
• Drying Time: 0.5/3/4 hours (TG 1/TG 2/TG 3, DIN 53150, at room temperature)
• Film Hardness: 219 seconds (pendulum hardness tester-König, after 30 minutes at 80 °C)

Suppliers:

• Covestro: Supplier of Bayhydrol U XP 2766 and Bayhydur XP 2655.
• Milliken: Supplier of Borchi® Gol LA additives.
• Ciba Specialty Chemicals: Supplier of Tinuvin UV stabilizers.
• Celanese: Supplier of Butoxyl solvent.

Disclaimer:

The document includes a disclaimer emphasizing that the provided information is given without warranty and that customers must conduct their own testing and assume responsibility for their specific use of the product.

This is a high-performance, water-based two-component polyurethane (PU) clear coat designed for automotive applications. The formulation is based on Bayhydrol U XP 2766 and Bayhydur XP 2655, providing a high-gloss, durable finish with excellent weather resistance and low VOC emissions.

Components and Formulation:

Component 1:

• Bayhydrol U XP 2766 (Covestro): Main resin providing the film-forming base.
• Borchi® Gol LA 2 (Milliken): Additive for improved flow and leveling.
• Borchi® Gol LA 50 (Milliken): Additive to enhance surface smoothness.
• Borchi® Gol LA 200 (Milliken): Additive for better slip and deaeration.
• Water: Used for thinning and adjusting viscosity.

Component 2:

• Bayhydur XP 2655 (Covestro): Polyisocyanate hardener that reacts with the resin to form a tough, crosslinked film.
• Tinuvin 384-2 (Ciba Specialty Chemicals): UV stabilizer for improved weather resistance.
• Tinuvin 292 (Ciba Specialty Chemicals): UV absorber to enhance durability.
• Butoxyl (Celanese): Solvent to aid in the mixing and application process.

Mixing and Application:

Mixing Instructions:

1. Component 1:
   • Add Bayhydrol U XP 2766 to the mixing vessel.
   • Stir in Borchi® Gol LA 2, Borchi® Gol LA 50, and Borchi® Gol LA 200 for 5 minutes at 2000 rpm.
   • Gradually add water while stirring at approximately 2000 rpm.
   • Allow the mixture to deaerate for one day.
2. Component 2:
   • Stir in Bayhydur XP 2655, Tinuvin 384-2, Tinuvin 292, and Butoxyl at approximately 2000 rpm.

Application Method:

• Mix Component 1 and Component 2 for 2 minutes at 1000 rpm.
• Add water to adjust the application viscosity.
• Spray using appropriate equipment.

Technical Data:

Mixing Ratio:

• NCO:OH ratio of 1.5:1

Viscosity and Solids:

• Solid Content on Application: Approximately 45%
• Spray Viscosity (DIN 53211-cup 4 mm at 23 °C): 25 seconds with approximately 10% water
• VOC Content: 164 g/l (calculated according to Directive 1999/13/EC)

Gloss and Drying Time:

• Gloss (20° / 60° on ABS - Bayfoil): 92 / 95
• Drying Time (DIN 53150 at Room Temperature):
  • TG 1: 0.5 hours
  • TG 2: 3 hours
  • TG 3: 4 hours

Hardness:

• Film Hardness (Pendulum Hardness Tester-König, DIN EN ISO 1522): 219 seconds after 30 minutes at 80 °C

Suppliers:

• Covestro: Supplier of Bayhydrol U XP 2766 and Bayhydur XP 2655.
• Milliken: Supplier of Borchi® Gol LA 2, Borchi® Gol LA 50, and Borchi® Gol LA 200.
• Ciba Specialty Chemicals: Supplier of Tinuvin 384-2 and Tinuvin 292.
• Celanese: Supplier of Butoxyl.

Notes:

• This formulation is provided for reference and guidance. Users should test and ensure its suitability for their specific applications.
• All sales are subject to the supplier's standard terms and conditions.

This aqueous two-pack PU clear coat formulation is designed for automotive applications requiring high gloss, durability, excellent weather resistance, and low VOC emissions, ensuring a superior protective finish.

This is a high-performance, water-based two-component polyurethane (PU) clear coat designed for automotive applications. It consists of two components that are mixed before application to form a durable, protective finish with excellent chemical and weather resistance. The formulation is based on Bayhydrol A 145 and Bayhydur 304, providing a clear, glossy finish with low VOC emissions.

Components and Formulation:

Component 1:

• Bayhydrol A 145, 46% (Covestro): Primary resin providing the film-forming base.
• Surfynol 104 BC (Air Products): Wetting agent to improve surface wetting and reduce surface tension.
• Borchi® Gel PW 25 / Borchi® Gel 0621 (Milliken): Rheology modifiers used for controlling viscosity.
• Borchi® Gol LA 200 / Borchi® Gol LA 50 (Milliken): Flow and leveling agents to enhance surface smoothness.

Component 2:

• Bayhydur 304 (Covestro): Polyisocyanate hardener which reacts with the resin to form a tough, crosslinked film.
• Dipropylene glycol dimethyl ether (Clariant): Co-solvent for improving solubility and film formation.

Thinning:

• Water: Used for adjusting the viscosity and application properties.

Mixing and Application:

Mixing Instructions:

1. Combine Bayhydrol A 145 with Surfynol 104 BC, Borchi® Gel PW 25 or 0621, and Borchi® Gol LA 200 or 50. Stir for 10 minutes at 2000 rpm.
2. Allow the mixture to deaerate for one day before use.

Application Method:

• Spray Equipment: Compressed-air spraying with a 1.3 mm nozzle.
• Spray Technique: Apply one cross-coat, allow 5 minutes for intermediate deaeration, then apply another cross-coat and allow 10 minutes for final deaeration.
• Light Stabilizers: To improve weather stability, add 1% Tinuvin 292 and 2% Tinuvin 1130 (both solid/solid resin) before mixing with component 2.

Technical Properties:

Mixing Ratio:

• NCO:OH ratio of 1.5
• Component 1 to Component 2 ratio of 2.7:1

Viscosity and Density:

• Flow Time (DIN 53211-cup 4 mm at 23 °C): 25 seconds
• Cosolvent Content: 9.2%
• Density: 1.0 kg/l
• VOC Content: 194 g/l
• pH Value: 7.7
• Solids Content on Application: 38%

Drying and Hardness:

• Drying Time: 30 minutes at 60 °C
• Pendulum Hardness (DIN EN ISO 1522): 123 s after 1 day at room temperature, 174 s after 7 days, 169 s after 16 hours at 50 °C

Gloss and Haze:

• Gloss (20° angle): 84
• Haze: 24

Chemical Resistance:

• Tested on car body panel with conventional two-pack PU primer and basecoat.
• Resistance to Water, Premium Gas, MPA, and Xylene: Rated on a scale from 0 (no visible changes) to 5 (strongly changed or destroyed surface).
• Alkaline and Acid Cleaning Agents: 7 days at room temperature, rated 0 (no visible changes).

Supplier Information:

• Covestro: Supplier of Bayhydrol A 145 and Bayhydur 304.
• Air Products: Supplier of Surfynol 104 BC.
• Milliken: Supplier of Borchi® Gel PW 25, Borchi® Gel 0621, Borchi® Gol LA 200, and Borchi® Gol LA 50.
• Clariant: Supplier of Dipropylene glycol DME.

Notes:

• This formulation is provided for reference and guidance. Users should test and ensure its suitability for their specific applications.
• All sales are subject to the supplier's standard terms and conditions.

This aqueous two-pack PU clear coat formulation is designed for automotive applications requiring high durability, chemical resistance, and low VOC emissions, ensuring a glossy and protective finish.