SIGMAPRIME 200 Multi-purpose General-purpose Epoxy Anti-corrosive Primer

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Introduction

A multi-purpose, universal epoxy anti-corrosive primer based on pure epoxy technology.

Key properties

• Used as a general-purpose primer in protective coating systems for ballast water tanks, decks, topsides, superstructures, hull exteriors, crude oil tanks and dry cargo holds.
• Excellent water resistance and anti-corrosion performance.
• A high-performance anticorrosive primer accepting low surface preparation.
• Good chemical resistance.
• Excellent abrasion resistance in the intended service environment.
• Excellent adhesion to non-ferrous metals, galvanised surfaces, shop primer coatings and steel surfaces.
• Excellent recoatability.
• Suitable for application and curing under a range of climatic conditions.
• Also suitable for bulk supply and two-component spray pump application.
• Also suitable for wet-blasted surfaces (damp or dry).

Colour and gloss

• Grey, yellow/green and red-brown.
• Low gloss.

Basic data 20 °C (68 °F)

Parameters after mixing

Maximum 392.0 g/L (approx. 3.3 lb/gal)

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

• Bare steel or surfaces with inorganic zinc silicate shop primer without a compatibility certificate: blast-clean (dry or wet blasting) to Sa 2½, with a surface profile 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 Sa2½ of ISO, with a profile of 30–75 µm (1.2–3.0 mil), or power-tool cleaned to Pt3 of the SPSS standard.
• Coated steel surfaces: high-pressure water jetting to VIS WJ2L (SSPC), with roughness 30–75 µm (1.2–3.0 mils).
• Primed or previously coated surfaces must be clean, dry and free of all contaminants.

IMO-MSC.215(82) applies to seawater ballast water tanks and IMO-MSC.288(87) applies to cargo oil tanks of crude oil tankers

(for specified areas only)

• Bare steel: structural treatment shall be carried out before coating to grade P2 of ISO 8501-3:2006, with edges ground to a smooth radius of at least 2 mm (0.079 in), or 3-pass chamfer grinding, or at least an equivalent treatment.
• Bare steel, or steel coated with unapproved inorganic zinc silicate shop primer; blast cleaning to Sa2½ of ISO, with a profile of 30–75 µm (1.2–3.0 mil).
• Steel coated with certified compatible inorganic zinc silicate shop primer: blast-clean welds and failed/damaged bare areas of shop primer to Sa 2½ of ISO, with a surface profile of 30–75 µm (1.2–3.0 mils): [1] for intact shop primer with IMO PSPC type approval, no additional requirement; [2] for shop primer without IMO PSPC type approval, blast-clean the intact shop primer areas to Sa 2 of ISO, removing at least 70% of the shop primer film, with a surface profile of 30–75 µm (1.2–3.0 mils).
• In accordance with ISO 8502-3:2017, the contamination level of dust of size classes “3”, “4” or “5” must not exceed rating “1”. Finer dust (size classes “1” and/or “2”), if visible to the naked eye without magnification, must be removed.
• Primed or previously coated surfaces must be clean, dry and free of all contaminants.

Atmospheric exposure environment

• Bare steel: blast cleaning to Sa2½ of ISO, with a profile of 30–75 µm, or to St3 of ISO.
• Shop-primed steel: prepare to Pt3 (SPSS).
• Galvanised surfaces must be free of all oil and grease, soluble salts and contaminants.
• Galvanized surfaces: first clean with solvent, or subsequently abrade with sandpaper.
• Coated steel surfaces: high-pressure water jetting to VIS WJ2L (SSPC), with roughness 30–75 µm (1.2–3.0 mils).
• Primed or previously coated surfaces must be clean, dry and free of all contaminants.

Substrate temperature and application conditions

• During application and curing, the substrate temperature should be above 5 °C (41 °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 should not exceed 85%

Galvanised surfaces

• Surface preparation must be carried out properly; the surface must be dry, clean and free of contaminants before application.
• The surface must be fully and thoroughly roughened by sweep blasting to a uniform semi-matt appearance.
• Sweep blast cleaning must meet SSPC-SP 16.

Instructions for use

Mixing ratio by volume: base : curing agent = 4:1

• Before application, raise the temperature of the base, curing agent or mixed paint to above 15 °C (59 °F); otherwise, additional thinner may be required to adjust the paint viscosity to a suitable application state.
• Excessive thinning may reduce the sag resistance of the wet film, slow hard drying and even reduce strength.
• The thinner should be added after the two components are mixed.

Notes

• See supplementary parameters — pot life after mixing.

Air spray

Airless spray (single-feed pump)

Brush/roller

Supplementary parameters

Film thickness and theoretical spreading rate

Notes

• Maximum dry film thickness: at overlaps of multiple coats, local occasional small areas with a dry film thickness up to 2000 µm are acceptable (such as drainage holes, edges and erection welds). Where film thickness exceeds the recommended range, consult PPG.

Recoat time for a coating at 160 µm (6.3 mils) dry film thickness

Notes

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

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

Notes

• Adequate and continuous ventilation must be maintained during application and curing of the coating.

Pot life (at normal application viscosity)

Safety Precautions

• Refer to the Material Safety Data Sheet and product package labelling for full details of the stated safety precautions and protective measures
• This is a solvent-borne coating. Avoid inhaling spray and solvent vapours, and avoid contact of uncured paint with skin and eyes

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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