PPG SIGMACOVER 380 LT High-solids Epoxy Coating 380 LT (Winter Grade)

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Key properties

• Used as a general-purpose epoxy primer in protective coating systems for ballast water tanks, decks, topsides, superstructures, hull exteriors and other areas
• Good abrasion resistance under the intended service conditions
• Suitable for immersed areas (ballast tanks, hull exteriors)
• Good drying and curing performance even at substrate temperatures as low as –5 °C (23 °F)
• Good anticorrosive and water resistance
• Good flexibility
• Compatible with well-designed cathodic protection systems
• Suitable for newbuilding and repair

Colour and gloss

• Grey, green
• Eggshell

Basic data at 10 °C (50 °F)

Parameters after mixing

Maximum 230.0 g/L (approx. 1.9 lb/gal) (theoretical calculated value)

4.0 m²/L at 200 µm (160 in²/US gal at 8.0 mils)

Maximum time: 1 month

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

Immersion environment

• Surfaces of bare steel or inorganic zinc silicate shop primer without a compatibility certificate must be blast cleaned (dry or wet blasting) to Sa2½ of ISO-8501-1, with surface roughness

of 30–75 µm (1.2–3.0 mils).

• Steel surfaces coated with certified compatible inorganic zinc silicate shop primer: welds and damaged or rusted areas of the shop primer shall be blast-cleaned to the international

Sa2½ of ISO 8501-1, with a profile of 30–75 µm (1.2–3.0 mil), or power-tool cleaned to Pt3 of the SPSS standard.

• The previous coat must be clean, dry and free of all contaminants.
• When the substrate temperature falls to freezing point, check that the surface is free of ice

IMO resolution MSC.215(82) on the technical requirements for ballast tanks

• Bare steel; structural treatment shall meet grade P2 of ISO 8501-3:2006; edges and corners shall be ground and chamfered to a radius of at least 2 mm

or ground with 3 passes.

• Surfaces of bare steel or steel plate coated only with inorganic zinc silicate shop primer not confirmed as compatible; blast cleaned (dry or wet blasting) to Sa2½ of the ISO standard,

with roughness of 30–75 µm.

• Steel surfaces coated with a certified compatible inorganic zinc silicate shop primer; weld seams and areas where the shop primer has failed or is damaged and bare must be blast cleaned to

Sa 2½ (ISO 8501-1), with surface roughness 30–75 µm (1.2–3.0 mils): [1] For intact shop primer with an IMO PSPC type approval certificate, no additional requirement: [2] For shop primer without an IMO PSPC type approval certificate, blast clean the intact shop primer to Sa 2 (ISO 8501-1), removing at least 70% of the shop primer film, with surface roughness 30–75 µm (1.2–3.0 mils).

• For damaged areas not exceeding 2% of the total coated area of the tank, grinding to St3 of ISO 8501-1 is acceptable. For damaged areas exceeding 2%

or where the continuous damaged area exceeds 25 m² (269 in²), blast cleaning to Sa2½ of ISO 8501-1 is required.

• The previous coat must be clean, dry and free of all contaminants.
• Dust particle sizes of grades 3, 4 and 5 are permitted to remain on the surface, with a cleanliness of grade 1 according to ISO 8502-3:1992; any other dust particles visible to the naked eye

shall be removed completely.

• When the substrate temperature falls to freezing point, check that the surface is free of ice

Atmospheric exposure environment

• Steel surfaces blast-cleaned to Sa2½ of ISO 8501-1, with a profile of 30–75 µm, or abraded to St3 of ISO 8501-1
• Shop-primed steel: prepare to Pt3 (SPSS)
• Galvanised surfaces must be free of all oil and grease, soluble salts and contaminants.
• Galvanised surfaces must be roughened by sweep blasting or other abrading methods
• The previous coat must be clean, dry and free of all contaminants.
• When the substrate temperature falls to freezing point, check that the surface is free of ice

Substrate temperature and application conditions

• During application and curing, the substrate temperature shall be maintained between -10 °C (14 °F) and 15 °C (59 °F).
• During application and curing, the substrate temperature may fall to -10 °C (14 °F), but in this case the degree of cure required for the coating to reach the expected hardness

may take a long time. However, as the temperature rises, the coating will achieve full protective performance after complete cure.

• 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

• Coating system for ballast water tanks — coating system information sheet SYSTEM SHEET 3106 (spec. 6)

Instructions for use

Mixing ratio by volume: base : curing agent = 80 : 20

• As far as possible, ensure the mixed paint temperature of the base and curing agent is above 5 °C (41 °F); otherwise, additional thinner may be required to adjust the viscosity to a suitable

application state.

• Excessive thinning may reduce the sag resistance of the wet film and slow curing.
• The thinner should be added after the two components are mixed

Induction Time

Induction time after mixing

Airless spray (single-feed pump)

Brush/roller

• For local small-area repair and manual touch-up only

Supplementary parameters

Film thickness and spreading rate

Note: for special local areas difficult to coat normally, the total dry film thickness of two evenly applied coats: 1500 µm (60.0 mil). Overcoating interval schedule for a 160 µm (6.3 mil) dry film thickness

Curing schedule for a 160 µm (6.3 mil) dry film thickness

Notes

• During application and curing, ensure continuous, adequate ventilation (see Safety Sheet 1433 and Information Sheet 1434)
• At application temperatures above 15 °C (59 °F), use the standard curing agent

Pot life after mixing (at suitable application viscosity)

Safety Precautions

• For the coating and its recommended thinners, see Safety Sheets 1430 and 1431 and the relevant Material Safety Data Sheet
• This is a solvent-borne coating. Avoid inhaling spray mist and solvent vapours, and avoid contact of uncured paint with skin and eyes.

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 product data, refer to Information Sheet 1411
• For safety guidance, refer to Information Sheet 1430
• Safety and health in confined spaces | explosion hazard — toxic hazard: refer to Information Sheet 1431
• For safe working in confined spaces, refer to Information Sheet 1433
• For ventilation guidance, refer to Information Sheet 1434
• For steel surface preparation, refer to Information Sheet 1490
• PPG Marine & Industrial Coatings ballast tank application process

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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