Hesse RAPIDO-PUR DE 423-x(gloss level)

  • Fast-drying
  • Ideal for open-pored lacquer structures
Two-component PU acrylic resin lacquer, colourless and quick-drying. A coating lacquer for priming and final lacquering. Particularly well suited to open-pore structures. The product is free from phthalate softeners and can be used for painting children's toys.
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  • Description
  • Information on use
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Fields of application

For all interior fixtures and fittings and for coating furniture.

Technical specifications

Appearance colourless
Density series kg/l 0.915 - 0.924
Flow time (+/- 15 %) 30 s / DIN 53211 - 4 mm
Form of delivery fluid
Non-volatile content series % 19 - 20
Proportion of renewable raw materials % 0 - 0.558
VOC EU % 80.919998 %
Number of coats (max) 2
Amount per layer (minimum) 100 g/m²
Amount per layer (max) 160 g/m²
Total application volume 300 g/m²
Mixing ratio (by volume) 10 : 1 PUR Hardener DR 4074
Mixing ratio (gravimetric) 100 : 10 PUR Hardener DR 4074

Information on use

Usage time 8 h / 20 °C
Pot life 8 h / 20 °C
Drying 45 min / 20 °C
Stackable after > 16 h / 20 °C
Complete drying 7 d / 20 °C
Surface preparation

Clean, dry wood, dependent upon wood type and method of application

Substrate sanding grits from-to 150 - 180
Lacquer sanding (grit) from - to 240 - 320

Coat with products from the same series after drying and lacquer sanding.

Yield per coat 6 - 9 m²/l

The spreading rate is heavily dependent on the type of application. The specifications relate to a liter of ready-for-use product, if necessary including hardener and thinner.
Storage temperature 16 - 25 °C
Working temperature 20 °C
Particular instructions Please use UNA-PUR DE 55x(gloss level) for heavily used surfaces. Do not use the dull matt adjustment of RAPIDO-PUR DE 423-0 as a Multicoat lacquer, but only as a 1-coat finish. Pre-priming is possible depending on the desired surface and substrate material, for instance using DG 572-1, DG 534 and DG 417. Hardening at 5 : 1 with PU Hardener DR 4074 increases abrasion resistance and enables use even on bleached surfaces. The total layer thickness is then 400 g/m².
General instructions on workmanship

PU lacquers should not be applied or dried at material and room temperatures below 18 °C and 40 % RH, ideal values: 20 - 25 °C and 50 - 65 % RH. Deviations lead to problems with drying and/or curing. To avoid adhesion problems, please gently sand back the PU lacquered surfaces before applying fresh lacquer and apply lacquer to the sanded surfaces as soon as possible. Mixed residues from the previous day must only be used as a 10 - 20 % aggregate in a fresh lacquer/hardener mixture. Old lacquer/hardener mixtures impair the surface quality (adhesion/stability). Freshly bleached wood must be allowed at least 48 h intermediate drying / 20 °C before recoating with PU lacquers. The final hardness of the coating is achieved after one week in correct storage conditions (at least 20 °C room temperature).
Please apply a test coat under real conditions!

Wall unit in natural beech, silk matt
Wood sanding: 120 - 180 grit (dust removal)
Basecoat: 1 x 100 - 150 g/m² Hesse RAPIDO-PUR DE 423-4, mixing ratio (by volume) 10 : 1 with PU Hardener DR 4074
Intermediate drying: 1 h / 20 °C
Lacquer sanding: 280 - 320 grit (dust removal)
Top coat: 1 x 100 - 150 g/m² Hesse RAPIDO-PUR DE 423-4, mixing ratio (by volume) 10 : 1 with PU Hardener DR 4074
Drying: at least 6 h / 20 °C
Packable: after drying for at least 16 h / 20 °C


Our technical information is continually adapted to keep up to date with the latest technology and statutory regulations. The latest version is always available online at www.hesse-lignal.de or talk to your local account manager. This information is for advice and is based on the best knowledge available and careful research in line with the current state of the art. This information cannot be held as legally binding. We also refer you to our terms and conditions of business. Safety data sheet is provided in accordance with EC regulation no. 1907/2006.