2K-Derocryl Haftgrund EG HS

Two component primer with micaceous iron oxide on acrylic resin basis, chemical cured with poly-isocyanate (polyurethane).

General information
2K-Derocryl Haftgrund EG HS

Field of application

  • Systems for corrosion protection. Primer for very high rust protection C4 und C5 systems at galvanised steel. Use Hardener 106 for 80 - 100 µm TSD, MR: 5:1 per w

Product properties

  • High Solid
  • Resistance to chemicals (on request)
  • Resistance to mineral oils
  • Scratch resistance
  • Good elasticity
  • Recoatable with itself
  • Recoatability: with polyurethane paints (2K Derocryl)

Technical Specification
2K-Derocryl Haftgrund EG HS

Colours grey, light-grey, redbrown, green, grey.
Other colours upon request.
Flash point >23 °C
Temperature stability -20 up to 120 (short-term up to 180) °C
Gloss Silky mat
Potential dry film thickness in one working process 80 up to 200 µm
Mixing ratio Hardener HL 401 Hardener HL 106
(Basis:hardener) by weight 10:1 5:1
(Basis:hardener) by volume 6:1 3:1
Pot life in hours 4 4
Viscosity Thixotrope Thixotrope
Density in kg/l 1,69 1,57
Solid content in % 80 73
Solid volume in % 65 53
Theoretical spreading capacity
  • 4,33 m²/l at 150 µm DFT
  • 2,56 m²/kg at 150 µm DFT
  • 3,53 m²/l at 150 µm DFT
  • 2,25 m²/kg at 150 µm DFT
Recommended film thickness 250 µm WFT corresponds to 160 µm DFT 150 µm WFT corresponds to 80 µm DFT
Drying (DIN EN ISO 1517) 150 µm DFT 80 µm DFT
Dust-dry (Tg1) After 90 min After 70 min
Touch-dry (Tg4) After 3,5 h After 3 h
Dry (Tg6) After 6 h After 5 h
Cured chemically After 7 days After 7 days
Interval for overcoating
  • after 3 h with two component topcoats
  • after 3 h with two component topcoats

Note

  • The specifications are related to the prepared mixture and are based on standard atmospheric conditions 23/50, DIN 50014.
  • Lower temperatures and/or higher humidity will prolong drying and hardening.
  • Application below +5 °C is not possible.

Safety information
2K-Derocryl Haftgrund EG HS

(See Security Data Sheet)

VOC-level Appr. 330 g/l
Solvent content Appr. 20 % by weight Appr. 27 % by weight
Aromatic content Appr. 8 % by weight

Storage
2K-Derocryl Haftgrund EG HS

Storage

  • In dry, cool rooms, if possible 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
2K-Derocryl Haftgrund EG HS

Mixing ratio

  • Stirr homogeneous, preferably with mechanical stirrer
  • Mix base paint and hardener according to the mixing ratio as specified

Airless spraying

  • Flow pressure 180 bar
  • Nozzle size 0,013 - 0,017 inch (0,33 - 0,43 mm)
  • Spraying angle according to the geometry and size of the object to be laquered

Compressed air spraying

  • Spraying pressure 5 - 6 bar
  • Nozzle size 1,8 - 2,3 mm
  • Adjust to spraying viscosity (appr. 60 s DIN 4 mm) adding appr. 8 % Derocryl-Verdünnung (two component products: after mixing)

Electrostatic application

  • Application is not possible

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. 10% Derocryl-Verdünnung

Cleaning

  • Rinse immediately with Derocryl-Verdünnung

Preparation of support

  • Shot blasting to a purity according to SA 2½
  • If necessary clean with high pressure-cleaner and turbo-cleaner-solution
  • 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: 2K-Derocryl Haftgrund EG HS
  • Finish coat: 2K-Derocryl Lack 30 HS

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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.

Quick access to product information.

Dr. Demuth Derisol Lackfarben GmbH & Co. KG

Hillerser Straße 8, 37154 Northeim
Telefon +49 5551 / 97940
Telefax +49 5551 / 979430

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