Selemix 7-532/7-533 2K Polyurethane Direct Topcoat is a versatile, 2-pack PU finish, available in five gloss levels, which can be applied directly to a variety of substrates without need for a primer, giving a very efficient process.
It offers excellent anticorrosive properties making it suitable for the finishing and protection of machinery, agricultural and construction equipment, and many other industrial painting applications.
Thanks to its ISO 12944-6 and MED Certification, Polyurethane Direct Topcoat HS is a true all-rounder for many paint jobs in the light industry.
Selemix 7-532/7-533 Polyurethane Direct Topcoat delivers a high performance single layer system, characterised by ease of application, high film thickness, very good adhesion on various substrates such as bare steel, aluminium, galvanised steel and fibre reinforced plastic.
Available in 10%, 30%, 50%, 70% and 80% Gloss Levels (click to view product) in over 6,700+ RAL, RAL Metallic, BS, NCS and Selemix TIC colours.
Also available in High Solids (HS) and Economy versions.
For Professional Use Only.
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Features & Benefits
- Versatile, 2-pack PU finish
- Available in 10%, 30%, 50%, 70% and 80% Gloss Levels (click to view product)
- Available in over 6,700+ RAL, RAL Metallic*, BS, NCS and Selemix TIC colours
- *Note: RAL Pearl colours shown are approximations only - matches will not be exact
- Can be applied directly to a variety of substrates without need for a primer
- Excellent anticorrosive properties
- Suitable for application by a wide range of methods including conventional spray, HVLP spray, airless spray or air-assisted airless spray
- Suitable for use on Steel, Cast Iron, Aluminium, Light Alloys, GRP and Painted Surfaces
- Product can be purchased as a Two Component Pack, or as Base or Hardener only - please see the drop down menu
- Also available in High Solids (HS) and Economy versions
Product Codes Explained
The base component of Selemix 7-532/7-533 2K Polyurethane Direct Topcoat 30% Gloss is seperated into two product codes which are used to identify white and pastel colours from the mixed colours as below:
- 7-532 - Selemix 2K Polyurethane Direct Topcoat 30% Gloss Base/Binder - Mixed Colours
- 7-533 - Selemix 2K Polyurethane Direct Topcoat 30% Gloss Base/Binder - White & Pastel Colours
- 9-070 - Hardener for Polyurethane Direct
This is for colour tinting only, the features of the product are the same.
Please contact our Technical Department on 0113 2455450 (option 2) or send a message to [email protected] for details.
Surface Preparation
Apply only on a clean and dry surface with a temperature above the dew point to avoid condensation. In confined spaces, provide adequate ventilation during application and drying.
Steel (Blast Cleaned):
- Blast clean to ISO 8501-1 SA 2.5 with a blast profile of maximum 40 µm Rz
Steel / Cast Iron:
- Machine sand with P80-120 discs and degrease
Galvanised Steel and Phosphated Steel:
- Abrade with SCOTCHBRITE® and degrease
Aluminium / Light Alloys:
- Machine sand with P240-320 discs and degrease
GRP:
- Machine sand with P240 discs and degrease
Painted Surfaces and Fillers:
- Machine sand with P320-400 discs and degrease
Mixing
- Thoroughly mix paint before activating and check colour before use
- The speed of drying can be increased with use of 1-490 Thinner, or 6-550 Accelerator (added at 1-2%) but these can reduce the final gloss and shorten the pot life
- Use of 1-490 Thinner AND 6-550 together is not recommended
- Use of 1-490 Thinner or 6-550 when applied directly to aluminium is not advised
Mixing Ratio:
- Selemix 7-532/7-533 2K Polyurethane Direct Topcoat
- 4 parts base : 1 part hardener
Please Note: Refer to the Product Data Sheet for detailed information regarding mixing ratios for the relevant binder/base and hardener/activator used.
Mixing ratios between the Standard, High Solids and Economy versions of this product vary due to the different hardeners used.
Please contact our Technical Department on 0113 2455450 (option 2) or send a message to [email protected] for details.
Application Notes
| Features |
Conventional Spray |
Airless Spray |
| Spraygun Setup: |
Nozzle:
Gravity: 1.8mm
Suction: 1.8-2.0mm
Pressure feed:1.2-1.4mm
|
Nozzle:
7-530-7-535*: 11-17 thou 0.28-0.43mm
7-536-7-537*: 11-13 thou 0.28-0.33mm
*See Product Data Sheet for details of Spray Gun setup for different gloss levels
|
| Air Pressure: |
HVLP: 2 Bar
Standard: 2-3 Bar
|
2-3 Bar |
| Fluid Pressure: |
N/A |
100 Bar |
| Number of coats: |
2 |
1-2 |
| Flash-off between coats: |
10-15 mins |
10-15 mins |
| Drying: |
Air dry or bake at 60°C for 45 mins |
Air dry or bake at 60°C for 45 mins |
| Flash-off before bake: |
5-10 mins |
5-10 mins |
| Wet Film Thickness: |
160-200 microns |
160-200 microns |
| Dry Film Thickness: |
80-100 microns |
80-100 microns |
Brush/Roller Application:
Please see the Product Data Sheet for detailed Application Instructions before use.
Theoretical Coverage
Theoretical coverage at 100 microns DFT:
- Conventional Spray - 3.9-4.4 m²/L
- Air Assisted Airless Spray - 4.7-5.2 m²/L
Note: Please see the Product Data Sheet for detailed information.
Drying Times
| Drying Times 20°C |
| Dust Free |
60 mins |
| Touch Free |
1.5-2 hours |
| Tape Free |
16 hours |
| Handleable |
6-10 hours |
| Hard Dry |
16 hours |
| Stoving |
45 minutes at 60°C (according to film thickness) |
| Overcoating time |
Minimum: when Hard Dry
Maximum: 5 months by itself without sanding
If 6-550 Accelerator or 1-490 Thinner are used, product can be recoated with itself up to 24 hours without sanding
|
| Please Note: Lower temperature or film thickness higher than 100µm will extend drying times |
Health & Safety
- For comprehensive Health, Safety and Environmental advice, please refer to the relevant Material Safety Data Sheets and product can labels
- THIS PRODUCT IS FOR PROFESSIONAL USE ONLY
