1. Introduction
The AkzoNobel U-TECH 4.0 Select Clearcoat is a high-performance, two-component polyurethane clearcoat system engineered for automotive refinishing. It is formulated to deliver a superior high gloss finish in two full wet coats, ensuring excellent appearance and durability. This product is designed for ease of buffing, even after aggressive color sanding or several days of cure, providing flexibility in the finishing process. The ready-to-spray VOC (Volatile Organic Compound) content is 4.0 lb/gal.
Key features include:
- Unmatched Brilliance: Delivers a seamless, mirror-like finish for automotive projects.
- Professional-Grade Durability: Engineered for lasting protection against UV rays, harsh weather, and everyday wear.
- Precision Color Preservation: Locks in the vibrancy and integrity of the color, ensuring a long-lasting, showroom-quality shine.
- Effortless Application: Designed for ease of use by both seasoned professionals and DIY enthusiasts.
- Resistance to Fading: Guards against discoloration, maintaining the 'just painted' look.
2. Product Overview
The U-TECH 4.0 Select Clearcoat system consists of two primary components: the clearcoat and a medium hardener. These components are designed to be mixed in a specific ratio to achieve optimal performance and finish.
Image 2.1: AkzoNobel U-TECH 4.0 Select Clearcoat and Activator Medium components.
Image 2.2: Overview of U-TECH 4.0 Select Clearcoat features and benefits.
3. Safety Information
When working with AkzoNobel U-TECH 4.0 Select Clearcoat, it is crucial to prioritize safety. This product contains chemicals that require proper handling and personal protective equipment.
- Respiratory Protection: Always use suitable respiratory protection. AkzoNobel strongly recommends the use of a fresh air supply respirator to prevent inhalation of harmful vapors.
- Ventilation: Ensure the work area is well-ventilated to minimize exposure to fumes.
- Skin and Eye Protection: Wear appropriate gloves and eye protection (safety goggles or face shield) to prevent skin contact and eye irritation.
- Flammability: This product may be flammable. Keep away from open flames, sparks, and other ignition sources.
- Disposal: Dispose of all waste materials and containers in accordance with local, state, and federal regulations.
Refer to the product's Safety Data Sheet (SDS) for comprehensive safety information before use.
4. Setup
Proper setup is essential for achieving the best results with U-TECH 4.0 Select Clearcoat.
4.1. Mixing Instructions
The clearcoat and hardener must be mixed thoroughly in the correct ratio.
- Mixing Ratio: Mix 4 parts U-TECH 4.0 Select Clearcoat to 1 part Medium Hardener (4:1 ratio by volume).
- Measuring: Use an AkzoNobel Measuring Stick (Part No. 109) for accurate measurement.
- Stirring: Stir the mixture thoroughly for several minutes until a uniform consistency is achieved.
4.2. Surface Preparation
Ensure the surface to be coated is clean, dry, and properly prepared. This includes proper sanding and cleaning to remove any contaminants that could affect adhesion or finish quality.
Image 4.1: Technical data sheet providing mixing and application guidelines.
5. Operating (Application)
Follow these guidelines for optimal application of the clearcoat.
5.1. Application Method
Apply the clearcoat using a spray gun.
- Number of Coats: Apply two (2) to three (3) full wet flowing coats.
- Between Coats: Allow 5 minutes flash-off time between coats at 70°F (21°C).
- Final Flash Before Bake: Allow 5 minutes flash-off time before baking at 70°F (21°C).
5.2. Spray Gun Settings
Recommended spray gun settings are as follows:
| Feed Type | Nozzle Size | Pressure | Flow Rate |
|---|---|---|---|
| RP - Pressure Feed | 0.8 - 1.4 mm | 30 - 36 psi | 12 - 16 oz/min |
| RP - Gravity Feed | 1.3 - 1.4 mm | 30 - 36 psi | N/A |
| HVLP - Pressure Feed | 1.0 - 1.2 mm | Max 10 psi (cap) | 12 - 16 oz/min |
| HVLP - Gravity Feed | 1.4 - 1.5 mm | Max 10 psi (cap) | N/A |
Image 5.1: Example of a vehicle with a high-gloss clearcoat finish.
6. Maintenance (Cure Times)
Understanding the cure times is crucial for proper handling and subsequent processes like buffing.
| Condition | 70°F (21°C) | 140°F (60°C) |
|---|---|---|
| Dust Free | 45 min | N.A. |
| Dry to Handle | 15 hrs | 45 min |
- Full Cure Time: The clearcoat achieves full cure in 7 days. Avoid aggressive washing or waxing during this period.
7. Troubleshooting
No specific troubleshooting information is provided in the product details. For issues encountered during application or curing, please refer to the comprehensive technical data sheet (TDS) available from AkzoNobel or consult with a professional automotive paint technician.
8. Specifications
Detailed specifications for the AkzoNobel U-TECH 4.0 Select Clearcoat:
| Attribute | Value |
|---|---|
| Brand | AkzoNobel |
| Model Name | Clearcoat Clear with Medium Hardener |
| Item Model Number | 399115 399098 |
| Color | Ultimate High Gloss Brilliant Polyurethane Clear Coat |
| Finish Type | Gloss |
| Size | 160 Fl Oz (Pack of 1) / 1.25 Gallons |
| Paint Type | Spray |
| Specific Uses For Product | Exterior (autobody) |
| Indoor/Outdoor Usage | Outdoor |
| Item Form | Liquid |
| Included Components | Clearcoat, Med Hardener |
| Full Cure Time | 7 Days |
| Item Weight | 13 pounds |
| Product Dimensions | 8 x 8 x 11 inches |
9. Warranty Information
Specific warranty information for the AkzoNobel U-TECH 4.0 Select Clearcoat is not provided in the available product data. For details regarding product warranty, please contact AkzoNobel directly or refer to the official product documentation that accompanies your purchase.
10. Support
For technical assistance, product inquiries, or support, please refer to the official AkzoNobel website or contact their customer service department. Contact information is typically available on the product packaging or their corporate website.