PPG SIGMAGUARD CSF 585 Two-component Solvent-free Amine-cured Epoxy Coating

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Introduction

A two-component, solvent-free, amine-cured epoxy.

Key properties

• A coating suitable for drinking water storage tanks/compartments.
• Can be applied with single-component airless spray equipment.
• Reduces explosion risk and fire hazard.
• Being light in colour, the coating is conspicuous in enclosed areas, with good visibility.
• Certified to NSF/ANSI/CAN Standard 61 and suitable for potable water environments; for details, refer to the NSF website:

http://www.nsf.org/.

Colour and gloss

• Blue, white.
• Gloss.

Basic data 20 °C (68 °F)

Parameters after mixing

Maximum value 6.0 g/L (approx. 0.1 lb/gal) (theoretical calculated value).

3.4 g/L (0.0 lb/gal) (US EPA Method 24).

Maximum: 20 days.

Curing agent: at least 24 months; store in a dry and cool environment.

Notes

• See the supplementary data sheet — theoretical spreading rate versus dry film thickness table.
• See supplementary parameters — recoat interval table.
• See supplementary parameters table — curing time table.

Recommended substrate condition and temperature

Carbon Steel

• Bare steel; blast cleaning to Sa2½ of ISO 8501-1, with a surface profile of 50–100 µm (2.0–4.0 mil).
• If the construction process requires a maintenance primer, then general epoxy primer 280 [dry film thickness 50 µm (2.0 mils)] or multi-purpose epoxy primer 200 [dry film thickness 75 µm (3.0 mils)] is recommended.

Concrete substrate

• Remove oil, grease and all other contaminants in accordance with ASTM D4258.
• Abrade in accordance with ASTM D4259 to remove glaze or laitance and achieve a surface profile of ICRI CSP 3 to 5.
• For certain specific applications, epoxy filler 114 A can be used as a repair putty to fill small pits. Consult the PPG field technical service representative for further information on the chemical resistance of the coating.
• The recommended maximum moisture transmission rate is 3 lb/1000 ft² per 24 hours, measured by (the calcium chloride test method of ASTM F1869 or the plastic sheet method of ASTM D4263).
• Alternatively, ASTM D4944 (calcium carbide gas method) may be used; the moisture content must not exceed 4%.

Substrate temperature and application conditions

• During application and curing, the substrate temperature should be above 10 °C (50 °F)
• During application and curing, the substrate temperature must be at least 3 °C (5 °F) above the dew point.

Instructions for use

Mixing ratio by volume: base to hardener 3.44:1

• At low temperatures, spraying may be difficult because of high paint viscosity.
• After mixing, the temperature of the base and curing agent shall be at least 20 °C (68 °F).
• No thinning required.
• Recommended application guidance: see the dedicated product application procedure.

Induction time table

Induction time after mixing

90 minutes at 20 °C (68 °F).

Notes

• See supplementary parameters — pot life after mixing.

Airless spray (single-feed pump)

• A single-component high-pressure airless spray pump can be used, but a heavy-duty pump with a pressure ratio of 60:1 and suitable high-pressure hose is preferred.
• For low-temperature application, use heated or insulated hoses to prevent the paint from thickening in the lines.
• With high-pressure hoses fitted with a line heating system, application is possible using a 45:1 single-component spray pump.
• Keep hoses as short as possible.

Notes

• When applying with a 45:1 single-component spray pump, heat the paint in the hose to about 30 °C (86 °F) so that the viscosity is adjusted to a state suitable for application.

Brush/roller

• Brush: for local small-area repair and touch-up only.

Cleaning solvent

• THINNER 90-83 (preferred) or THINNER 90-53
• All application equipment must be cleaned immediately after use.
• Paint remaining in spray equipment must be fully discharged within its pot life.

Supplementary parameters

Wet film thickness measurement

• On site, wet film thickness readings often differ from the true film thickness because of the thixotropic nature and surface tension of the paint; air entrapped in the paint escapes slowly and temporarily occupies part of the wet film volume.
• In practice, it is recommended to control the measured wet film at the specified dry film thickness plus 60 µm (2.4 mil).

Measure dry film thickness

• Because the probe of the thickness gauge indents the soft film, the initial hardness of the film is insufficient to measure the dry film thickness accurately for a few days after completion of the coating.
• When measuring dry film thickness, place a calibration shim of known thickness over the coating at the test point, then gently press the gauge probe onto the shim to measure the film thickness through it.

Final cleaning procedure

• After completion of the coating system, the tank shall be washed according to the recommended tank-washing procedure.
• Sufficient time shall be allowed to ensure ventilation, drying and full cure, meeting the recommendations of the latest product data sheet and process specification.
• Always operate in accordance with the applicable tank-washing procedure.
• Several effective tank-washing procedures are available for selection (for example, see the washing procedures recommended in the product type approval certificate).

Option 1: suitable washing procedure

• After the coating system reaches full cure as required by the latest product data sheet, the tank shall be filled with fresh tap water.
• The tap water shall remain in the tank for at least 4 days.
• Then wash all tank surfaces — walls, bottom and top — thoroughly with high-pressure water.
• After washing, drain the tank completely.
• Only after the above cleaning procedure can the tank be filled with water and put into service.

Option 2: suitable washing procedure

• All personnel shall wear waterproof clothing, boots and gloves, which shall be disinfected beforehand with sodium hypochlorite solution (1% active chlorine).
• All tank walls, bottom and top shall be brushed or sprayed under high pressure with the above 1% active chlorine solution. Note: tank-washing machines may also be used for spraying.
• All areas shall be washed with high-pressure tap water, and the tank dried.
• Concentrate the active chlorine solution on the tank bottom, about 1 L per 10 m² (about 1 quart per 100 ft²)
• Fill the tank with tap water to a depth of about 20 cm and keep the water in the tank for at least 2 hours (up to 24 hours).
• After draining the waste water, the whole surface of the tank shall be rinsed thoroughly with tap water.
• After filling the tank with water, water samples may need to be taken to check the bacterial content, according to local regulations.
• Only after the above cleaning procedure can the tank be filled with water and put into service.

Film thickness and theoretical spreading rate

Notes

• Maximum dry film thickness by brush: 100 µm (4 mils)

Overcoating time for a 300 µm (12.0 mil) dry film thickness

Notes

• The surface must be clean, dry and free of all contaminants.

Curing time for a 300 µm (12.0 mil) dry film thickness

Notes

• During the first 24 hours after coating completion, the relative humidity of the environment must be no more than 50%, or the surface temperature must be no less than 10 °C (50 °F).
• The substrate temperature during application must be above 10 °C (50 °F).
• Adequate and continuous ventilation must be maintained during application and curing of the coating.
• The coating system for potable water tanks must be washed out after full cure and before commissioning.
• If used for the transport and storage of potable water, follow the application procedure for this coating

Pot life (at normal application viscosity)

Notes

• Because mixing is an exothermic reaction, the paint temperature may rise during mixing and for some time afterwards.

Disclaimer

• Solvent-free epoxy CSF 585 is a solvent-free epoxy developed for protective coating of tanks/compartments storing and carrying drinking water; the product has passed type approval by international authoritative bodies and has been confirmed to meet the various requirements of the intended use.
• To meet these requirements, maintaining continuous, sufficient and unobstructed ventilation during application and curing is essential; only in this way can full cure be ensured.
• At the same time, following the cleaning procedure of the latest data sheet, the entire tank/compartment must be thoroughly cleaned before formally filling with drinking water.
• PPG Protective & Marine Coatings bears no responsibility or liability for any odour, off-taste or contamination in potable water arising after cleaning due to cleaner residue remaining in the coating film.

Safety Precautions

• Refer to the Material Safety Data Sheet and product package labelling for full details of the stated safety precautions and protective measures
• Although solvent-free, the coating must be handled with care; avoid inhaling spray mist and contact of uncured paint with skin and eyes.
• Although the coating contains no solvent, the paint mist is not harmless; a supplied-air mask should be worn during spray application.
• In confined spaces, provide adequate ventilation to maintain good visibility.

Worldwide applicability

Although PPG Protective & 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

• Information sheet | Explanation of product data sheets
• Guide | PPG SIGMACARE PLUS | Online guide to maintenance at sea

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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