Hychem PU200 — Two pack non-yellowing polyurethane floor finish

Prior to the application of HYCHEM PU200, the substrate must be thoroughly prepared.

• HYCHEM PU200 is designed for application over other coatings i.e. HYCHEM Supafloor or HYCHEM Universal. Application over other coatings is not recommended.
• The surface must be completely dry.
• All dust, loose and friable material must be completely removed from all surfaces prior to application.
• Remove all surface laitance, contaminants, existing coatings, curing compounds and any weak and loose materials.
• Mechanical sanding of the surface may be required e.g. for application of self-levelling epoxies, where high surface tension is a concern, where previous coatings have exceeded their recoat window or where surface contamination is a concern.

It is important to note that even when the application environment is warm, products which have been stored in cold or cooler conditions should be preconditioned, ideally to 20-25°C, to ease mixing and application and help avoid other potential issues such as amine bloom or blushing. Applying a cold product in a warm environment is not recommended.

Mix HYCHEM PU200 resin with HYCHEM Utint pigment ensuring the pigment is thoroughly mixed. Mix HYCHEM PU200 Part A resin with PU200 Part B hardener at 3:1 by volume using a helical mixer at slow speed e.g. <500 rpm for 2 – 3 minutes. Do not over mix i.e. avoid unnecessary aeration. Dilution is not required.

Apply the mixed product at approximately 8 – 10 sqm/L by brush and roller.

Temperature and the surrounding atmospheric conditions will play a part in the curing process of all resin products. Under conditions of low temperatures and high humidity the final cured surface finish can be adversely affected, potentially resulting in poor gloss retention, discoloration over time, poor overcoat ability and inter-coat adhesion. Quite often these conditions will result in the formation of a white film over the surface, often evident after contact with water. If this occurs, the existing coating will need to be abraded to completely remove the affected surface to ensure the adhesion of subsequent applications. In some cases, partial or complete re-priming may be necessary. Attention also needs to be paid to the substrate temperature, which should be at least 3-5 °C above the dew point during the curing phase. Industry standards recommend the accurate recording of environmental conditions such as substrate and air temperatures, humidity levels and dew point readings during both the application and curing processes. Full material warranties cannot be provided unless all the relevant data has been recorded accurately. If in doubt consult the HYCHEM technical department for advice.

Wear appropriate personal protection equipment. Gloves, eye protection, mask and overalls should be used during mixing and application.

12 months from date of manufacture when stored under shelter at 25°C in the original un-opened container.

The packaging must be stored properly in original, unopened and undamaged sealed packaging, in dry conditions at temperatures between 5°C and 30°C.

HYCHEM PU200 is supplied pigmented in a wide range of colours and is UV stable / non-yellowing.

• This product may only be used by experienced professionals.
• Freshly applied product must be protected from damp, condensation and water during curing. External application should be when there is no risk of rain, condensation/dew, or excessive heat (including hot substrates).
• Ensure adequate ventilation during application and drying to avoid impaired reaction.
• Beware of condensation — the substrate and uncured floor must be at least 3°C above the dew point. If exposure to moisture occurs, the surface must be fully abraded to ensure no risk of amine bloom and subsequent delamination of top coats.
• Ensure consumption of material is uniform to achieve proper appearance, texture and consistent performance.
• If heating is required do not use gas, oil, paraffin or other fossil-fuel heaters. Use only electric-powered warm-air blower systems.
• For consistent colour, ensure material and pigments from the same batch are used for the entire floor/space.
• At low temperatures and low humidities (< 40% relative humidity), curing and recoat times will be affected.