AMERCOAT 220 waterborne acrylic topcoat 220

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Key properties

• Easy to apply; suitable for brush, roller or spray application.
• Excellent gloss retention and weathering resistance
• Can be used directly as a primer and is easily recoated over itself
• Highly VOC-compliant
• Resistant to scratching and washing

Colour and gloss

• Standard colours, various safety colours, and custom colours available on request.
• Semi-gloss

Note: For certain topcoat colours such as red, orange and yellow, production costs may increase due to the need to enhance the hiding power of the film, particularly when the colour contrast between these topcoats and the associated primer is pronounced.

Basic data at 20 °C (68 °F)

Parameters after mixing

Notes

• See supplementary parameters — recoat interval table
• See supplementary parameters table — curing time table

Recommended substrate condition and temperature

• The final performance of the coating depends on the quality of prior surface preparation, and is roughly proportional to it. Refer to the curing parameters of the compatible primer and intermediate coat, and

other technical requirements for application. For certain epoxy coatings, before overcoating with this product, check that the surface is free from defects such as amine bloom, and is clean and dry with all contamination removed. In addition, both the primer and the intermediate coat shall follow the minimum and maximum overcoating intervals of each product. Aged epoxy old coatings shall be abraded. For unknown old coatings of uncertain nature, it is recommended to apply a small trial patch before overcoating.

Carbon Steel

• Remove all rust, dust, moisture, oil, grease and other contaminants from the surface.
• Power tool cleaning to ISO-8501-1 St2/St3 (or SSPC SP-2 or SP3).
• Occasionally, sweep blasting to ISO-8501-1 Sa1 (or SSPC SP-7) may be acceptable; however, if good coating performance quality is expected,

abrasive blast cleaning to at least ISO-8501-1 Sa2 (or SSPC SP-6) or a higher cleaning grade is required.

(Non-ferrous) metal and galvanized surfaces

• Remove surface oil or soap film with detergent or cleaning emulsion, then apply one coat of a conversion-type phosphating wash primer.
• Power tool cleaning and surface roughening are acceptable; or sweep blasting with fine abrasive to SSPC SP-16, producing a suitably dense

and uniformly distributed profile with a roughness of 25–50 µm (1.0–2.0 mil).

• Newly galvanized surfaces that have been exposed outdoors for at least 24 months may be coated with the associated primer after high-pressure water washing to remove white rust and all other contaminants.
• Galvanized surfaces previously passivated with chromate must be abrasive blast cleaned. If the chromate is not thoroughly removed, the adhesion of the coating to the galvanized surface may be severely affected.

Concrete/masonry surfaces

• Clean concrete surfaces by abrasive blasting to ASTM D4259 or acid etching to ASTM D4260.
• Masonry surfaces shall be cleaned to ASTM D4261.
• Epoxy filler 114A (AMERCOAT 114A) may be selected as the filling sealer for pitting. For other options, consult the PPG field technical representative.

Wood substrates

• Sand bare new wood surfaces with sandpaper and remove all surface contaminants and raised grain.
• Wipe with Thinner 21-06 (AMERCOAT 65) to remove oil stains, sap or resin. Solvent-soaked rags must then be properly disposed of to prevent spontaneous combustion.
• Apply a wood-specific primer or use Water-borne Acrylic Topcoat 220 directly as a primer for priming.
• Before recoating onto wood substrates with existing primer, remove all dust, oil and grease with a suitable cleaner. Surface wax shall be removed with a chemical dewaxing agent.

Sand to remove loose paint film to ensure adhesion.

Drywall

• Tape all joints, fill and repair cracks and nail holes with patching plaster, mortar or putty, then sand the surface smooth. Remove all dust. After removing

all tape from the drywall surface, apply at least 2 coats of Acrylic Topcoat 220.

Substrate temperature and application conditions

• During application, ensure the surface temperature is between 5 °C (41 °F) and 50 °C (122 °F).
• During application and curing, the substrate temperature must be at least 3 °C (5 °F) above the dew point
• During application and curing, the relative humidity must not exceed 85%

Coating system specification

• Compatible primers for use: metal substrates, inorganic zinc DIMETCOTE series, epoxy zinc-rich AMERCOAT 68 series, AMERLOCK 400 / 2 series,

SIGMAZINC series, AMERCOAT epoxy series and SIGMA epoxy series.

• For primers not listed above, consult the PPG technical service representative.

Instructions for use

• Stir continuously with a power mixer for 1–2 min until completely dispersed and uniformly mixed. Ensure thorough mixing with no settlement at the bottom.
• First pre-mix the pigmented component with an air-driven stirrer at medium speed. Then, while stirring, slowly pour the curing agent component into the container holding the base

component, and continue stirring for about 1–2 minutes until the two components are fully dispersed and thoroughly mixed to a homogeneous state.

Application

• Mask off the application area to prevent airborne dust settlement and other contamination.
• Avoid combustible gases or other routes generating carbon dioxide gas, and guard against their potential to aggravate amine blush on surrounding epoxy coatings.
• Ensure continuous, adequate ventilation throughout application and curing
• During spray application, provide necessary shielding at draughty areas.

Material temperature

During application, control the paint temperature between 10 °C (50 °F) and 20 °C (68 °F).

Air spray

• Conventional spray equipment
• Installation of an oil-water separator in the main air supply line is necessary. This product is sensitive to moisture contaminants.

Airless spray (single-feed pump)

• A spray pump with a pressure ratio of at least 28:1

Brush/roller

• Use high-quality natural bristle brushes and/or 1/4 inch or 3/8 inch short-nap rollers with good solvent resistance.

Ensure brushes or rollers are firm and well loaded with paint to reduce inclusions and trapped air. Multiple brush/roller passes may be required to achieve the specified thickness.

Supplementary parameters

Recoat interval for a coating up to 50 µm (2.0 mils) dry film thickness

Curing time table for a coating at 50 µm (2.0 mils) dry film thickness

Product certifications

• Complies with USDA requirements for incidental food contact
• Low flame spread performance meets Class A of the National Fire Protection Association standard
• For nuclear power environments Level 2 (local)

Safety Precautions

• For the coating and its recommended thinners, see Safety Sheets 1430 and 1431 and the relevant Material Safety Data Sheet

Worldwide

Although PPG Protective and Marine Coatings is committed to providing completely consistent products to users worldwide, from time to time it may be necessary to make minor adjustments to specific products to comply with local/national regulations or environmental requirements. In the following cases, use the corresponding alternative version of the product data sheet instead.

Reference information

• For the conversion table, refer to Information Sheet 1410
• For product data, refer to Information Sheet 1411

Quality guarantee

PPG warrants (1) that it has good title to the product, (2) that the product quality conforms to the relevant technical quality specifications in force at the date of manufacture of the product, and (3) that the supplied product is free of lawful claims by third parties for infringement of US patent rights. The above warranties are limited to those given by PPG and other express or implied warranties required by applicable laws and regulations for transactions and commercial practice; any abuse contrary to the stated conditions, and any other warranty for special purposes or uses, are excluded, and PPG shall be free from liability. To claim under this warranty, the buyer must notify PPG in writing within five (5) days of discovering the quality defect, and the date must be within the product's valid storage period or within one (1) year from delivery of the product to the buyer.

If the buyer fails to notify PPG of the defect as required above, this will prejudice the buyer's right to obtain compensation under this warranty from PPG!

Limitation of liability

In all cases, PPG shall not be liable for any indirect, special, incidental or consequential loss of any kind arising from or in connection with the use of this product (whether based on negligence, strict liability or tort).

The information in this product data sheet is based on laboratory tests we believe to be reliable, and is provided for guidance only. PPG may revise this information at any time as experience accumulates and product development progresses.

All recommendations and advice concerning the use of this product, whether in technical documents, in response to an enquiry or otherwise, are given to the best of our knowledge and are believed to be reliable. Our products and related information are provided for industrial users possessing the necessary knowledge and practical skills, and it is the end user's responsibility to determine whether the product is suitable for the specific use. The buyer, having performed such evaluation, proceeds entirely at its own risk.

The quality and condition of the substrate on site, and the many other factors affecting product use and application, are beyond PPG's control. Therefore, PPG accepts no liability for any loss, injury or damage arising from the use of the information in this product data sheet (unless otherwise provided in a written agreement). Different application environments, changes to the application process or extrapolation of the reference data may result in failure to achieve the expected coating quality.

This product data sheet supersedes all previous versions. The buyer is responsible for confirming that the data sheet in hand is the latest version before using the product. The latest version is published on the official website of PPG Protective & Marine Coatings:

www.ppgpmc.com. In case of discrepancy between the Chinese version and the original English version of the product data sheet, the English original shall prevail.

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