2K-Derocryl Lack Durapid

Two component high solid topcoat on acrylic resin basis, chemical cured with poly-isocyanate (polyurethane). Free of lead, cadmium and chromium VI compounds.

General information
2K-Derocryl Lack Durapid

Field of application

  • Quick-drying, scratch-resistant monolayer coat for steel.
  • Smoother surface and gloss increase possible by forced drying.
  • Easy and smooth in application.
  • Use for metal coating according to Dekopaint directive possible.
  • DGNB compliant because VOC <300 g/l with HL 402

Product properties

  • High Solid
  • Scratch resistance
  • Industriel uv-resistance
  • Fast drying
  • Short potlife - 2 component airless

Technical Specification
2K-Derocryl Lack Durapid

Colours RAL 5010 , RAL-colour chart with exceptions.
Other colours upon request.
Flash point >23 °C
Temperature stability -20 up to 120 (short-term up to 150) °C
Gloss Satin glossy, appr. 50 U in 60° angle
Potential dry film thickness in one working process 60 up to 80 µm
Mixing ratio Hardener HL 402
(Basis:hardener) by weight 8:1
(Basis:hardener) by volume 5,5:1
Pot life in hours 0,75
Viscosity Thixotrope
Density in kg/l 1,39
Solid content in % 79
Solid volume in % 66
Theoretical spreading capacity
  • 8,25 m²/l at 80 µm DFT
  • 5,94 m²/kg at 80 µm DFT
Recommended film thickness 125 µm WFT corresponds to 80 µm DFT
Drying (DIN EN ISO 1517) 80 µm DFT
Dust-dry (Tg1) After 45 min
Touch-dry (Tg4) After 3,5 h
Dry (Tg6) After 5 h
Cured chemically After 7 days
Accelerated drying 30 min. at 60°C possible, after 10 min. flash-off time
Interval for overcoating
  • after 6 h with itself
  • Max. after 24 h without slightly sanding


  • 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 Lack Durapid

(See Security Data Sheet)

VOC-level Appr. 296 g/l
Solvent content Appr. 21 % by weight
Aromatic content Appr. 10 % by weight

2K-Derocryl Lack Durapid


  • 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 Lack Durapid

Mixing ratio

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

Airless spraying

  • Risk of spray dust due to very fast drying
  • Flow pressure 180 bar
  • Nozzle size 0,011 - 0,015 inch (0,28 - 0,38 mm)
  • Spraying angle according to the geometry and size of the object to be laquered
  • If required (two component: after mixing) using 3% Derozink-Verdünnung is possible

Compressed air spraying

  • Spraying pressure 2 - 3 bar
  • Nozzle size 1,6 - 2 mm
  • Adjust to spraying viscosity (appr. 40 s DIN 4 mm) adding appr. 10 % Derozink-Verdünnung (two component products: after mixing)

Electrostatic application

  • Can be applied as delivered
  • Conductance of the material: 800 kΩ


  • Can not be applied as delivered

Other methods

  • Roller and brush application for repair work is possible


  • Max. 10% Derozink-Verdünnung


  • Rinse immediately with Derocryl-Verdünnung

Preparation of support

  • Shot blasting to a purity according to SA 2½
  • Mill scale, welding residues, dust and dirt on the surface which might reduce adhesion have to be carefully and thoroughly removed

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

  • Finish coat: 2K-Derocryl Lack Durapid

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Product Information

2K-Derocryl Lack DTM Rapid

HS One layer coat with extremly fast drying at high layer thicknesses

Two component coat on acryl resin. Economic coating system for steel

See more details

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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