HEMPEL's Polyurethane Topcoat 55ECN

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55ECN

Product Characteristics

Description

HEMPEL Polyurethane Topcoat 55ECN is a two-component, glossy polyurethane topcoat cured with an aliphatic isocyanate; the film has good hardness and excellent surface smoothness, and good gloss and colour retention.

Recommended use

It can be used as a protective topcoat to protect steel structures requiring high light fastness and colour retention in severely polluted environments. Minimum curing temperature is -10 °C.

Service temperature

• Under dry conditions: maximum service temperature 120 °C [248 °F].

VOC content (after mixing the multi-component paint)

Subject to specific legislation; see the explanatory notes on the Hempel website hempel.com or your local Hempel website. VOC values may vary with colour; refer to Section 9 of the Safety Data Sheet. This product complies with the VOC requirements of national mandatory or recommended standards; consult the company representative for details.

Handle with care. Before and during use, observe the safety labels on the packaging and paint containers and comply with all local and national safety regulations. Consult the Hempel Safety Data Sheet and Product Data Sheet for the product at all times.

For professional use only.

Product Data

Curing Agent 97050

Grey-white 10170

Surface Preparation

Cleanliness

• For further details, refer to the separate Hempel document Surface Preparation Guide.

• Remove salts, detergents and other contaminants by high-pressure fresh water washing.

• The surface must be dry and clean before application.

New construction

• In accordance with Hempel's specifications.

55ECN

Application

Mixing Ratio

Base 55EC9 : Curing Agent 97050 (10 : 1 by volume)

Stir thoroughly before use.

Pot Life

Recommended method

If brush or roller application is used, multiple coats are required to obtain the specified dry film thickness. Do not thin components separately — thinning is permitted after mixing. Additional thinning may be required to reduce dry spray at high temperatures. Additional thinning may be required at low paint temperatures; this will result in lower film build and slower drying. Spray parameters are indicative and may be adjusted according to site conditions. Pressure values apply to the material at 20 °C. (*Consult a company representative if other application methods are required!).

Film thickness

Depending on the application and area of use, the product may be specified at a film thickness different from that indicated. This changes the spreading rate, drying and curing times and overcoating intervals. For optimum performance, avoid excessive film thickness. Actual consumption factors may vary with application conditions, equipment and workmanship. Checking paint consumption against area improves film thickness control.

Application conditions

• During application and curing, the surface temperature must be above -10 °C [14 °F].

• The surface to be coated must be clean and dry, and its temperature must be at least 3 °C [5 °F] above the dew point to avoid condensation.

• Provide adequate ventilation during application and drying.

Relative humidity

• During application, the relative humidity must be below 85%.

• During curing, the relative humidity must be below 85%.

Notes

- If brush or roller application is used, more coats are required to achieve the specified dry film thickness.

• The practical consumption factor may vary with application conditions, equipment and workmanship.

• Checking paint consumption against area improves film thickness control.

• For appearance reasons, an additional topcoat may be applied.

• Stir thoroughly before use.

• Even a small amount of water in the mixed paint shortens the pot life and causes film defects.

• Do not open or mix the paint containers before use.

• Two coats of topcoat may be required to achieve full hiding.

Drying and recoat

Product compatibility

• Previous coat: according to Hempel's specifications.

• Subsequent coat: none, or according to Hempel's specifications.

Drying Time

55ECN

Recoat

Hempel's specifications supersede all guidance shown in the recoat table.

ardOIQuali Product Name rdOIHeaderNo C C C C

9 h 6 h 3 h 100 HEMPEL Poly

1 55ECN urethane topcoat Yes Yes Yes

2 55ECN urethane topcoat Yes Yes Yes

55ECN Ext. Ext. Ext.

Ext.*

Ext.* Ext.* Ext.*

Extendable* Depending on the actual exposure conditions, the coated surface may be recoated after an extended time. Contact your local Hempel representative for advice.

For products of the same generic chemical composition, recoat times are for reference only.

For further information, refer to Hempel's specifications.

Drying conditions

- To achieve the stated drying times, adequate ventilation during application, drying and curing is essential.

• Avoid condensation on the freshly applied coating.

Recoat notes

• For appearance reasons, an additional topcoat may be applied.

• If the maximum recoat interval is exceeded, the surface must be roughened to ensure intercoat adhesion.

• Before recoating, prepare a test patch to check compatibility, wetting and adhesion.

- Avoid exposing touch-up areas, full coats and intercoat intervals to high humidity during application.

• The surface must be dry and clean before application.

• The surface must be clean before recoating.

Others

• Hempel's specifications supersede any recommendations in the Product Data Sheet.

Storage

Shelf Life

When stored in unopened original containers, shelf life is counted from the date of production. Thereafter, the product quality must be re-inspected. Storage at high temperatures may shorten the shelf life. For advice, consult Hempel.

Storage conditions

• The curing agent is moisture-sensitive. Store in a dry place and keep sealed before use.

- Store the product in accordance with the Safety Data Sheet, label and local regulations. Keep containers in a dry, cool, well-ventilated place away from heat and sources of ignition. Keep containers tightly closed. Handle with care.

Carbon footprint

Carbon footprint is based on a 1 µm dry film thickness formed over a surface area of 1 m².

The scope includes raw materials, transport to the Hempel factory, the Hempel production process, and any volatile organic compounds (VOC) emitted during and after use of the product.

55ECN

Supplementary documents

For further information, refer to the Hempel website (https://www.hempel.com/service-and-support/technical-guidelines) or your local Hempel website:

• Notes to the Product Data Sheet.

• Application Methods
• General application guide

datasheet, which is also available for download at www.hempel.com.

This Product Data Sheet (“PDS”) relates to the product supplied (the “Product”), and its content is updated from time to time. Accordingly, the buyer/applicator should refer to the PDS supplied with the relevant batch of product (rather than an earlier version). In addition to the PDS, the buyer/applicator may receive some or all of the specifications, declarations and/or guides shown below, which are also available for download from the “Products” page of the Hempel website (www.hempel.com) (hereinafter the “Supplementary Documents”):

If the information in the PDS and the supplementary documents is inconsistent, the information shall take precedence in the order listed above. In this case, contact the Hempel representative for clarification. In addition, the buyer/applicator must give full consideration to the relevant safety information accompanying each product. Hempel accepts no liability for any defects arising from application not carried out fully in accordance with the recommendations and requirements of the relevant PDS and supplementary documents. The information and terms in this disclaimer apply to this PDS, the supplementary documents and any other relevant documents provided by Hempel for this product. In addition, unless otherwise expressly agreed in writing, supply of the product and all technical support are subject to Hempel's General Conditions of Sale, Delivery and Service.

Information is subject to the manufacturer's latest version; the manufacturer's latest TDS prevails.
The technical parameters on this page are taken from the product's original manufacturer technical datasheet, the copyright of which belongs to the manufacturer. If a rights holder considers the presentation inappropriate, contact us for verification and handling.