Hesse PU NANO-TOP DU 520

A two-component PU acrylic resin finishing lacquer, free of aromatic substances and matt. The finishing lacquer is distinguished by its particular transparency, scratch resistance, touch smoothness and uniform matting without clouds, even on very dark substrates. This product is free from phthalate softeners and is therefore also suitable for coating children's toys..
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  • Description
  • Information on use
  • Sample process
  • Safety Data Sheets / Certificates

Fields of application

For all interior fixtures and fittings on all clear PU basecoats and as a finishing coat on PU coloured lacquers.

Technical specifications

Yield per coat 5 - 9 m²/l

The spreading rate is heavily dependent on the type of application. The specified theoretic spreading rate reduces by up to 40 % with spray applications. Brushing or manual application methods are virtually loss-free. The specifications relate to a liter of ready-for-use product, if necessary including hardener and thinner.
Appearance colourless
Density series kg/l 0.904
Flow time 33 s / DIN 53211 - 4 mm
Form of delivery fluid
Non-volatile content series % 21.1
VOC EU % 78.84 %
Number of coats (max) 1
Amount per layer (minimum) 100 g/m²
Amount per layer (max) 180 g/m²
Total application volume 180 g/m²
Mixing ratio (by volume) 10 : 1 PUR Hardener DR 470
Mixing ratio (gravimetric) 100 : 10 PUR Hardener DR 470

Information on use

Usage time 8 h / 20 °C
Pot life 2 d / 20 °C
Drying 2 h / 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
Intermediate lacquer sanding (grits) from-to 320 - 400
Finishing After sufficient drying and immediately after interim sanding with lacquer from the same product range.
Working temperature 20 °C
Particular instructions Hesse PU NANO-TOP DU 520 is also suitable for finishing of Hesse UNA-COLOR and besides cloud-free matting produces the desired resistance to ring stains. Pre-priming for transparent lacquer structures is possible, depending on the requirements for the surface and the substrate material e.g. with Hesse Basecoats DG 572-1, DG 534, DG 417 or DG 468-1.
General instructions on workmanship PU lacquers should not be applied and dried at material and room-temperatures below 18 °C and 40 % RH. Ideal values are: 20 - 25 °C, 50 - 65 % RH. Deviations will result in drying or hardening errors. In order to avoid adhesion problems, please sand the PU lacquered surfaces before applying fresh lacquer and apply lacquer to the sanded surfaces as soon as possible. Old lacquer and hardener mixtures affect the surface quality (adhesion/resistance). Freshly bleached substrates must undergo intermediate drying for at least 48 h at 20 °C before coating with suitable PU lacquers. If stored correctly (at least 20 °C room temperature), the final hardness of the coating is achieved after a week.
Please apply a test coat under real conditions!

Contract furnishing, laminated MDF, filled, black, dull matt
Filler sanding: 320 - 400 grit (dust removal)
Colour coating: 1 x 120 - 140 g/m² Hesse UNA-COLOR DB 555-9005, mixing ratio (by volume) 10 : 1 with PU Hardener DR 470 and addition of 20 - 30 % Thinner DV 4900 to the lacquer/hardener mixture
Intermediate drying: at least 4 h / 20 °C
Lacquer sanding: 400 grit (dust removal)
Top coat: 1 x 100 - 120 g/m² Hesse PU NANO-TOP DU 520, mixing ratio (by volume) 10 : 1 with PU Hardener DR 470 and addition of 10 % Thinner DV 494 to the lacquer/hardener mixture
Packable: after at least 16 h / 20 °C

Material Safety Data Sheets

Contact

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.