Hesse UNA-PUR Basecoat DG 534

  • Light-fast
  • universally usable
  • Spray application and curtain coating can be used
  • Fast-drying
  • Good sanding properties
  • Peroxide-resistant
Hesse UNA PU Basecoat DG 534 is a fast drying, two component PU acrylic resin basecoat that sands well with machines. This light fast coating can be applied to bleached wood by spraying and also by curtain coating.
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  • Description
  • Information on use
  • Sample process
  • Safety Data Sheets / Certificates

Fields of application

With a suitable top coat, this PU basecoat can be used for all interior fittings and for coating a wide variety of woods in kitchens and bathrooms to achieve an open to semi-closed pore structure. When thinned, this universal product can also be used to seal the edges of MDF.

Technical specifications

Appearance colourless
Density series kg/l 0.946
Flow time 30 s / DIN 53211 - 4 mm
Form of delivery fluid
Non-volatile content series % 23
VOC EU % 76.97 %
Number of coats (max) 3
Amount per layer (minimum) 100 g/m²
Amount per layer (max) 150 g/m²
Total application volume 450 g/m²
Mixing ratio (by volume) 5 : 1 PUR Hardener DR 470
Mixing ratio (gravimetric) 100 : 20 PUR Hardener DR 470

Information on use

Usage time 8 h / 20 °C
Pot life 11 h / 20 °C
Drying 4 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
Lacquer sanding (grit) from - to 320 - 400
Finishing After sufficient drying, can be re-coated using suitable light-fast Hesse polyurethane multi-coat, top coat and brilliant lacquers. ( e.g. DE 55x(gloss level), DE 56x(gloss level), DU 59x(gloss level), DU 45229)
Comments on sanding Sanding with 400 - 600 grit is recommended before applying a final coat of high gloss finish.
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
Processing instructions Forced drying is possible at up to 50 °C.
Particular instructions Mix with 20 % to 30 % DV 494 thinner to apply as an MDF edge sealant beneath coloured lacquer systems. After sufficient drying and proper slight sanding, the basecoat can subsequently be coated with products of the DE 55x(gloss level) and DE 56x(gloss level) range, or with Hesse PU Diamond top coat DU 59x(gloss level) for especially scratch resistant surfaces.
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! On MDF substrates: Thick boards that have been created by gluing together several thinner boards are, due to the variance in tension, susceptible to edge ridging. It is better to select a single MDF board of the appropriate thickness. Panels that have been glued together should always be sanded flat at the edges and colourlessly pre-insulated. Any water introduced by gluing must be allowed to evaporate prior to coating.

The coating process and the precise treatment parameters are adapted in each case to the respective application and drying conditions and can be found in the customer-specific process descriptions (surface techniques).

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.