Hesse PU Acrylic Brilliant lacquer DU 429-1

Hesse PU Acrylate brilliant lacquer DU 429-1 is a clear, high gloss, two component PU acrylate resin finishing lacquer. The product is light fast and can be used as a top coat on natural, light woods and pigmented surfaces. DU 429-1 can be polished and buffed after adequate drying. This lacquer is certified to IMO (flame retardant coating agent for seagoing vessels) and is therefore suitable for the interior fittings on ships.
Request product Download data sheet
  • Description
  • Information on use
  • Sample process
  • Safety Data Sheets / Certificates

Fields of application

This brilliant coating can be used for all interior fittings, including in kitchens and bathrooms, as well as for ship interiors. You can even use it on bleached substrates when combined with suitable, clear Hesse PU basecoats.

Technical specifications

Appearance colourless
Density series kg/l 0.992
Flow time 28 s / DIN 53211 - 4 mm
Form of delivery fluid
Non-volatile content series % 45.8
VOC EU % 54.16 %
Number of coats (max) 2
Amount per layer (minimum) 100 g/m²
Amount per layer (max) 150 g/m²
Total application volume 300 g/m²
Mixing ratio (by volume) 2 : 1 PUR Hardener DR 408
Mixing ratio (gravimetric) 100 : 50 PUR Hardener DR 408

Information on use

Usage time 2 - 3 h / 20 °C
Pot life 5 h / 20 °C
Drying 24 h / 20 °C
Stackable after > 72 h / 20 °C
Complete drying 7 d / 20 °C
Surface preparation Prior to application, the surface must be sanded, clean and free of grease.
Substrate sanding grits from-to 400 - 800
Intermediate sanding (grits) from-to 600 - 800
Finishing After sufficient drying time and intermediate sanding, another coat of the same. See details in the general technical information “Polishing and Buffing.”
Comments on sanding To prevent problems of bonding between the coating layers, the surface of clear lacquer that has already been applied and sanded back must be coated with the desired subsequent coating material within one working day (8 h at 20 °C). Repeated slight sanding will be required if this time is exceeded!
Yield per coat 7 - 10 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 - 40 °C
Working temperature 20 °C
Processing instructions DU 429-1 can even be polished after just 24 h / 20 °C with air humidity of 40 – 45 %. These details may change with highly deviating climatic conditions and should be reviewed individually as necessary. Users themselves should adjust the application viscosity. We recommend adding 20 - 30 % Thinner DV 4935 to the lacquer/hardener mixture.
Particular instructions Use on bleached surfaces is possible when used in combination with suitable Hesse PU basecoats, such as: DG 416, DG 417
When used as a flame-retardant coating for seagoing vessels, this product must only be combined with other approved and technically matching products. When being used as a flame-retardant coating agent for seagoing vessels, the maximum total application amount is 120 g/m². “A risk assessment was undertaken according to Directive 2014/90/EU, Annex II, Section 3. This coating does not pose a physical risk to health nor a risk to the environment when cured and dried.”
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!

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).

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.