What is Intergard 400 Part A and why choose it
INTERGARD 400 PARTE A INDIVISIBLE KIT is the base component of a two-pack pure epoxy coating containing micaceous iron oxide (MIO). When mixed with its dedicated curing agent EPA740 (Part B), it forms a high-build, abrasion-resistant primer for non-permanently immersed steel surfaces. Designed for professional and industrial use in marine newbuilding, it offers long-term overcoating capability, robust corrosion protection and resistance to handling damage during fabrication, transport and service.
Main features
- Abrasion-resistant pure epoxy: Two-pack epoxy system formulated for demanding marine and industrial environments.
- Micaceous iron oxide pigmentation: Improves barrier effect and enhances long-term overcoatability after extended ageing periods.
- High build in a single coat: Typical dry film thickness of 125 microns (192 microns wet) for strong protection in fewer coats.
- General-purpose primer: Intended for all non-permanently immersed areas in new construction.
- Long overcoating windows: Can be overcoated after extended periods with compatible Intergard, Interthane and Intertherm products (see technical overcoating table in the data sheet).
- Multiple certifications when used in an approved scheme: Including food contact for carriage of grain (NOHH) and fire resistance (surface spread of flame, smoke and toxicity).
- Professional application flexibility: Suitable for airless spray, with brush and roller recommended for small areas and touch-up.
- Controlled VOC content: 307 g/L as supplied (EPA Method 24), compliant with EU and Chinese solvent emission directives.
Technical specifications
- Product type: Pure epoxy, two-pack abrasion resistant coating with micaceous iron oxide
- Part A name: Intergard 400 MIO Dark Grey Part A
- Intended use: General purpose primer for all non-permanently immersed areas; for use at newbuilding
- Colours (system): EPA001 MIO Dark Grey, EPA007 MIO Light Grey
- Finish/Sheen: Not applicable (matt system finish when combined)
- Curing agent (Part B): EPA740
- Mix ratio: 5.67 volumes Part A to 1 volume Part B
- Volume solids: 65% ±2% (ISO 3233:1998)
- Typical dry film thickness: 125 microns (192 microns wet)
- Theoretical coverage: 5.2 m²/L at 125 microns DFT (allow appropriate loss factors)
- Recommended application methods: Airless spray (recommended); roller and brush for small areas only
- Flash point (typical): Part A 23°C; Part B 23°C; Mixed 25°C
- Induction period: 30 minutes at temperatures below 25°C
- Pot life: Approx. 13 h at 0°C; 12 h at 5°C; 6 h at 25°C; 2 h at 35°C
- Drying times (substrate temperature):
- 0°C: Touch dry 12 h; hard dry 36 h
- 5°C: Touch dry 3 h; hard dry 36 h
- 25°C: Touch dry 2 h; hard dry 12 h
- 35°C: Touch dry 60 min; hard dry 8 h
- VOC (as supplied):
- 307 g/L (EPA Method 24)
- 221 g/kg of liquid paint as supplied (EU Solvent Emissions Directive 1999/13/EC)
- 325 g/L (Chinese National Standard GB23985)
- Unit size (kit): 20 L unit (Part A 17 L in 20 L pack; Part B 3 L in 5 L pack)
- Unit shipping weight (typical): 20 L unit approx. 36.04 kg
- Shelf life: Minimum 12 months at 25°C; store in dry, shaded conditions away from heat and ignition, subject to re-inspection thereafter
Applications and typical use cases
Marine newbuilding
- General purpose primer for steel areas not permanently immersed, such as topsides, decks, superstructures and internal spaces.
- Designed for use in accordance with standard Worldwide Marine Specifications.
Certified schemes
When used as part of an approved coating scheme, Intergard 400 can contribute to systems certified for:
- Food contact – carriage of grain (NOHH)
- Fire resistance – surface spread of flame (Exova Warringtonfire)
- Fire resistance – smoke and toxicity (Exova Warringtonfire)
Overcoating and system compatibility
- Can be overcoated after extended intervals with a range of primers and finishes, including Intergard 269, Intergard 400, Intergard 410, Intergard 415, Intergard 740, Interthane 990/990E and Intertherm 891 at temperature-dependent minimum overcoating times.
- Special note: for overcoating with Intergard 410, Intergard 415 and Intergard 740 in extended overcoating situations, adequate surface texture, cleanliness and adhesion of the aged coating are required; glossy surfaces may need light abrasion or sweep blasting.
FAQ
1. What is supplied in the INTERGARD 400 PARTE A INDIVISIBLE KIT?
The kit is a two-pack system comprising Part A (Intergard 400 MIO Dark Grey base, 17 L in a 20 L can) and Part B (curing agent EPA740, 3 L in a 5 L can), intended to be mixed as a complete unit.
2. On which surfaces can Intergard 400 be used?
It is designed as a general purpose primer for steel areas that are not permanently immersed in water, primarily in marine newbuilding projects. Optimum performance is achieved over properly blasted steel.
3. How should the surface be prepared before application?
All surfaces must be clean, dry and free from contaminants. For newbuilding, weld spatter should be removed and welds and sharp edges smoothed. Damaged or bare steel areas should typically be abrasive blast cleaned to Sa2½ (ISO 8501-1:2007) or power tooled to Pt3 (JSRA SPSS:1984). Intact shop primers must be clean, dry and free from soluble salts and contamination.
4. What is the correct mixing procedure for this product?
Material is supplied in two containers as a unit. Agitate Base (Part A) with a power agitator, then add the full contents of Curing Agent (Part B) and mix thoroughly with power agitation. Always mix a complete unit in the supplied proportions (5.67:1 by volume).
5. Which application methods are recommended?
Airless spray is recommended for most areas. Brush and roller application are recommended for small areas only and may require multiple coats to achieve the specified film thickness. Conventional spray is not recommended in the marine pure epoxy version.
6. Can Intergard 400 be overcoated after long intervals?
Yes. The product is specifically designed to be overcoatable after extended periods when the coating remains intact, tightly adherent, clean, dry and properly textured. For certain topcoats (Intergard 410, Intergard 415, Intergard 740), extended overcoating may require light abrasion or sweep blasting, especially if the epoxy MIO has been overapplied and has a glossy surface.
7. What are the temperature limitations for curing and application?
The product does not cure adequately below 0°C. For maximum performance, ambient curing temperatures should be above 5°C, and the steel surface temperature must be at least 3°C above the dew point.
8. Is this product suitable for immersion service?
No. Intergard 400 in this configuration is specified as a general purpose primer for areas that are not permanently immersed.
9. What is the expected service performance regarding abrasion and handling?
The coating is an abrasion resistant pure epoxy designed to withstand mechanical handling, making it suitable for application in the yard and subsequent transport and service, provided it is applied over correctly prepared substrates and within the specified film thickness range.
Section 14 – Transport information
- UN number: UN1263
- UN proper shipping name: PAINT
- Transport hazard class: Class 3 (flammable liquid)
- Packing group: III
- Environmental hazards: Not classified as a marine pollutant (no)
- ADR/RID special information: Tunnel code (D/E)
- IMDG special information: Emergency schedules F-E, S-E
- Transport within user’s premises: Always transport in closed containers that are upright and secure. Personnel transporting the product must know what to do in case of accident or spillage.
Section 8 – Personal protective measures
The following information is summarised from the Safety Data Sheet for Intergard 400 MIO Dark Grey Part A and applies to professional/industrial users.
General hygiene measures
- Eating, drinking and smoking are prohibited where the product is handled, stored or processed.
- Wash hands, forearms and face thoroughly after handling, before breaks and at the end of the shift.
- Remove contaminated clothing and protective equipment before entering eating areas; wash contaminated clothing before reuse.
- Ensure eyewash stations and safety showers are close to the workstation.
Eye and face protection
- Wear safety eyewear complying with an approved standard when a risk assessment indicates possible exposure to liquid splashes, mists, gases or dusts.
- Use chemical splash goggles and/or face shield; where inhalation hazards exist, a full-face respirator may be required instead.
Hand protection
- Wear chemical-resistant, impervious gloves complying with an approved standard whenever handling the product.
- For prolonged or frequently repeated contact: gloves with protection class 6 (breakthrough time > 480 minutes, EN374) are recommended. Recommended materials: Viton or nitrile, thickness ≥ 0.38 mm.
- For brief contact: protection class 2 or higher (breakthrough time > 30 minutes, EN374) is recommended. Recommended material: nitrile, thickness ≥ 0.12 mm.
- Replace gloves regularly and immediately if damaged; performance can be reduced by physical or chemical damage and poor maintenance.
Skin and body protection
- Select protective clothing based on the task and risks and have it approved by a specialist before use.
- When there is a risk of ignition from static electricity, wear anti-static protective clothing (coveralls, boots and gloves with anti-static properties; see EN 1149).
- Use appropriate footwear and any additional skin protection as required by the risk assessment.
Respiratory protection
- Use only with adequate ventilation, local exhaust or process enclosure to keep airborne levels below occupational exposure limits and below the lower explosive limit.
- When ventilation is insufficient, wear a respirator conforming to EN140 with type A/P2 filter or better, selected and used within a formal respiratory protection program.
- During dry sanding, flame cutting or welding of the dry film, hazardous dust and fumes may be generated; wet sanding is preferred. If exposure cannot be controlled by local exhaust, use suitable respiratory protection.
Engineering and environmental controls
- Use explosion-proof ventilation equipment where flammable vapours may be present.
- Emissions from ventilation or process equipment must comply with environmental protection legislation; fume scrubbers or filters may be required to reduce emissions.
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