Derocryl Grund Hydro GT
Water borne adhesion-primer on an acrylat dispersion basis.
General information
Derocryl Grund Hydro GT
Field of application
- Adhesion primer for aluminium, galvanized and stainless steel substrates.
- Meets the requirements for quality levels 1-4 in the DGNB system. Can also be used for corrosion protection on steel. A variant with mica is available for special requirements.
Product properties
- Free from aromatic compounds
- Water based
- Resistance to condensation
- Coating systems for corrosivity category C3
- Fast drying
- Fast recoatability
- Primer: universal
Technical Specification
Derocryl Grund Hydro GT
| Colours | ca. RAL 7040, light-grey, white. |
|---|---|
| Flash point | Not applicable |
| Temperature stability | Up to 120 (short-term up to 150) °C |
| Gloss | Mat |
| Potential dry film thickness in one working process | 60 up to 100 µm |
| Viscosity | Thixotrope |
| Density in kg/l | 1,38 |
| Solid content in % | 64 |
| Solid volume in % | 50 |
| Theoretical spreading capacity |
|
| Recommended film thickness | 150 µm WFT corresponds to 80 µm DFT |
| Drying (DIN EN ISO 1517) | 80 µm DFT |
| Dust-dry (Tg1) | After 30 min |
| Touch-dry (Tg4) | After 60 min |
| Dry (Tg6) | After 2 h |
| Accelerated drying | 30 min. at 60°C possible, after 10 min. flash-off time |
| Interval for overcoating |
|
Note
- The specifications are based on standard atmospheric conditions 23/50, DIN 50014.
- Lower temperatures and/or higher humidity will prolong drying and hardening.
Safety information
Derocryl Grund Hydro GT
(See Security Data Sheet)
| Solvent content | Appr. 2 % by weight |
|---|
Storage
Derocryl Grund Hydro GT
Storage
- In dry, cool rooms, frost-proof
- Ensure good ventilation
Shelf life
- 6 month from date of delivery when in unopened original containers in cool and dry conditions
Application methods
Derocryl Grund Hydro GT
Airless spraying
- Risk of spray dust due to very fast drying
- After using the material close the packings immediately
- Dip the pistol and the nozzle into water during the breaks
- It is tending to fast skinning. Do not stir the skin in any case!
- Flow pressure 90 - 100 bar
- Nozzle size 0,011 - 0,013 inch (0,28 - 0,33 mm)
- Spraying angle according to the geometry and size of the object to be laquered
Compressed air spraying
- Spraying pressure 3 - 4 bar
- Nozzle size 1,3 - 1,6 mm
- Adjust to spraying viscosity (appr. 80 s DIN 4 mm) adding appr. 5 % Water (two component products: after mixing)
Electrostatic application
- Application is possible, provided the equipment is suitable for water based materials
Dipping
- Can not be applied as delivered
Other methods
- Roller and brush application is possible in the quality as delivered
- Double application is possible in viscosity as delivered
Thinner
- Max. 5% Water
Cleaning
- Rinse immediately with Water
- Residues are dissolvable with Deripox-Verdünnung
Preparation of support
- Shot blasting to a purity according to SA 2½
- Sweeping for zinced supports
- Mill scale, welding residues, dust, soluble residues from chemical pretreatments and zinc reaction products which might reduce adhesion have to be carefully and thoroughly removed
- Cleaning with alkaline wetting agent
General remarks
- During coating and drying the humidity should be min. 30 % / max. 85 %
- During coating and drying the environmental temperature should be min. 5°C / max. 30°C
- Object temperature at least 3° C above dew point.
Example for a system
- Primer coat: Derocryl Grund Hydro GT
- Finish coat: 2K-DC Lack 70 ST Biobased
The general information and descriptions contained in this specification are provided to the best of our knowledge. Our information and specifications do not constitute warranted characteristics in the legal sense. Any advice for preparation and application which may be provided verbally, in writing or by means of experiments is of general nature only, and any property rights of third parties are also to be regarded in this context. Our general instructions do not release you from your obligation to check the suitability of the products supplied by our company for the intended methods and purposes of application. Particular in those cases when our supplied material will be applied with products from other sources. The products are prepared, applied and used outside of our sphere of control and thus fall solely within the user´s scope of responsibility.
Our general terms of sale and delivery apply as agreed.