What is Intercure 420 Part A and why choose it?
Intercure 420 Part A Indivisible Kit by International Marina is the base component of a two-component, high solids, low VOC rapid recoat epoxy micaceous iron oxide (MIO) coating. Formulated with proprietary polymer technology, it cures and can be overcoated quickly, even at low temperatures, providing high build barrier protection to steel structures in demanding industrial environments.
Used as part of the Intercure 420 system, this MIO epoxy is designed for professional use on new construction and maintenance projects where fast handling times, long-term corrosion protection and reliable overcoating performance are required.
Main features
- Two-component rapid recoat epoxy system: Part A is combined with the dedicated curing agent (Part B) to form a high performance barrier coating.
- High solids, low VOC formulation: 70% volume solids with typical VOC 2.75 lb/gal (330 g/l) (EPA Method 24).
- Micaceous iron oxide pigmentation: Plate-like MIO pigments enhance barrier effect and long-term overcoating properties.
- Fast cure at low temperatures: Touch dry from 30–75 minutes and hard dry from 1–7 hours depending on substrate temperature (5–40°C).
- High build intermediate coat: Typical dry film thickness 100–150 microns (4–6 mils) in a single coat.
- Excellent barrier protection: Suitable as an intermediate in high performance systems for aggressive environments.
- Versatile application methods: Can be applied by airless spray, conventional air spray, brush or roller.
- Available colours and finish: Natural MIO, Silver Grey and Light Grey with a matt appearance.
- Designed for professional industrial and marine related use: Intended for applicators working under appropriate health, safety and environmental controls.
Technical specifications
- Product type: Rapid Recoat Epoxy micaceous iron oxide coating (Part A of a two-component system)
- Brand: International Marina
- Product name: Intercure 420 MIO Dark Grey Part A (Indivisible Kit)
- Colour range: Natural MIO, Silver Grey, Light Grey
- Gloss level: Matt
- Volume solids: 70%
- Typical dry film thickness: 100–150 microns (4–6 mils) dry, equivalent to 143–214 microns (5.7–8.6 mils) wet
- Theoretical coverage: 5.60 m²/litre at 125 microns d.f.t. with stated volume solids
- Typical practical coverage: 225 sq.ft/US gallon at 5 mils d.f.t. with stated volume solids (allow for appropriate loss factors)
- Recommended application methods: Airless spray, air spray, brush, roller
- Mix ratio (Part A:Part B): 3 parts : 1 part by volume (complete units must be mixed)
- Working pot life: 8 h (5°C), 4 h (15°C), 2 h (25°C), 45 min (40°C)
- Drying and overcoating (with recommended topcoats):
- 5°C: Touch dry 75 min; hard dry 7 h; minimum overcoat 5 h; maximum overcoat extended
- 15°C: Touch dry 50 min; hard dry 4 h; minimum overcoat 3 h; maximum overcoat extended
- 25°C: Touch dry 40 min; hard dry 2 h; minimum overcoat 2 h; maximum overcoat extended
- 40°C: Touch dry 30 min; hard dry 1 h; minimum overcoat 1 h; maximum overcoat extended
- Surface preparation (steel): Abrasive grit blast to Sa2½ (ISO 8501-1:2007) or SSPC-SP6 with sharp angular profile 50–75 microns (2–3 mils)
- Recommended primers: Intercure 200, Intergard 251, Intergard 269, Interzinc 22 (may require mist or tie coat), Interzinc 52, Interzinc 315
- Recommended topcoats: Interfine 629HS, Intergard 740, Interthane 990
- Density (mixed product): 1.63 kg/l (13.6 lb/gal)
- Flash point (Part A / Part B / mixed): Part A 29°C (84°F); Part B 26°C (79°F); mixed 27°C (81°F)
- VOC (typical): 2.75 lb/gal (330 g/l) EPA Method 24; 201 g/kg EU Solvent Emissions Directive; 292 g/l Chinese National Standard GB23985
- Storage: Minimum 12 months at 25°C (77°F), in dry, shaded conditions away from heat and ignition; subject to re-inspection thereafter
- Standard pack sizes (Part A/Part B): 20 litre unit (Part A 15 L pack / Part B 5 L pack); 4 US gal unit (Part A 3 US gal pack / Part B 1 US gal pack)
- Typical shipping weight: 20 litre: Part A 29.5 kg, Part B 5.2 kg; 4 US gal: Part A 49.4 lb, Part B 8.8 lb
- Physical appearance (Part A): Grey liquid, solvent odour, density 1.811 g/cm³
- Boiling point (typical): 120°C (248°F)
- Flash point method: Closed cup (Pensky-Martens)
- Viscosity (Part A): Kinematic approx. 811 mm²/s at room temperature (DIN EN ISO 3219)
Applications and use cases
- High build intermediate coat: As part of a multi-coat system to provide excellent barrier protection on steel structures in aggressive environments.
- Industrial and infrastructure steelwork: Suitable for offshore platforms, bridges, chemical and petrochemical plants, power stations, pulp and paper mills and industrial buildings.
- Non-aggressive environments: Can be used as a barrier coat applied directly to suitably prepared steel where exposure is less severe.
- Fabrication shop applications: Ideal as a high build MIO “travel coat” applied in the shop prior to shipment, with final overcoating on site.
- New construction and maintenance: Rapid curing and extended overcoating windows provide flexibility for both newbuild projects and on-site maintenance painting.
FAQ
-
What type of coating system does Intercure 420 Part A belong to?
It is the base component of a two-component rapid recoat epoxy micaceous iron oxide coating designed as a high build barrier intermediate for steel protection.
-
Can Intercure 420 be applied at low temperatures?
Yes. The product is capable of curing at temperatures below 0°C, but it must not be applied at temperatures below 0°C where there is any possibility of ice forming on the substrate. Surface temperature must always be at least 3°C (5°F) above the dew point.
-
Which application methods are recommended?
Airless spray is recommended, with air spray, brush and roller suitable for small areas. Thinning is normally not required and should only be done with the specified International GTA thinners and within local environmental limits.
-
What surface preparation is required on steel?
Steel should be abrasive grit blast cleaned to Sa2½ (ISO 8501-1:2007) or SSPC-SP6, achieving a sharp angular profile of 50–75 microns (2–3 mils). Primers used beneath Intercure 420 should be applied over similarly prepared surfaces.
-
Is Intercure 420 suitable over zinc primers?
Yes, it can be applied over fully cured metallic zinc primers, provided the surface is clean, dry and free from contamination and zinc salts. If the zinc primer was applied over shot blasted steel, an overall angular grit sweep blast is required before application.
-
How quickly can I overcoat with the chosen topcoat?
At 25°C, the minimum overcoating interval with recommended topcoats is 2 hours. At 5°C the minimum is 5 hours. Maximum overcoating interval is described as extended, provided the surface is clean and correctly prepared.
-
Does the coating discolour on exterior exposure?
Like all epoxies, Intercure 420 will chalk and discolour when exposed outdoors. This does not adversely affect its anti-corrosive performance.
-
Which colours are available and are there limitations for topcoat coverage?
Intercure 420 is supplied in relatively dark MIO colours (Natural MIO, Silver Grey, Light Grey). Due to the high MIO content, some thin-film finish colours may require two coats for full coverage.
-
What is the shelf life of the Intercure 420 Part A Indivisible Kit?
The stated minimum shelf life is 12 months at 25°C (77°F), stored in dry, shaded conditions away from heat and ignition, and subject to re-inspection thereafter.
-
Who is this product intended for?
Intercure 420 is intended for use only by professional applicators in industrial situations, following the Safety Data Sheet and relevant national health, safety and environmental regulations.
Section 14 – Transport information
- UN number / ID number: UN1263
- UN proper shipping name: PAINT
- Transport hazard class: Class 3 (flammable liquids)
- Packing group: III
- Environmental hazards: Not classified as environmentally hazardous for transport (ADR/RID, IMDG, IATA)
- ADR/RID tunnel code: (D/E)
- IMDG emergency schedules: F-E, S-E
- Special precautions for user: Within user premises, always transport in closed containers kept upright and secure. Ensure personnel transporting the product know what to do in case of accident or spillage.
- Transport in bulk according to IMO instruments: Not applicable.
Section 8 – Individual protection measures
The following information summarises the personal protective equipment and exposure controls stated for Intercure 420 MIO Dark Grey Part A. Selection must always be based on a site-specific risk assessment.
Engineering controls
- Use only with adequate ventilation.
- Apply process enclosures and local exhaust ventilation to keep airborne concentrations below statutory limits and below lower explosive limits.
- Use explosion-proof ventilation and electrical equipment.
Eye and face protection
- Wear safety eyewear complying with an approved standard when there is a risk of exposure to liquid splashes, mists, gases or dusts.
- Recommended: chemical splash goggles and/or face shield.
- If inhalation hazards exist, a full-face respirator may provide combined respiratory and eye protection.
Hand protection
- Wear chemical-resistant, impervious gloves complying with EN374 or equivalent whenever handling the product.
- For prolonged or frequently repeated contact: gloves with protection class 6 (breakthrough time > 480 min). Recommended materials: Viton or nitrile, thickness ≥ 0.38 mm.
- For brief contact: gloves with protection class ≥ 2 (breakthrough time > 30 min). Recommended material: nitrile, thickness ≥ 0.12 mm.
- Replace gloves regularly and immediately if damaged. Performance can be reduced by physical or chemical damage or poor maintenance.
Skin and body protection
- Select protective clothing based on the task and associated risks.
- When there is a risk of ignition from static electricity, wear anti-static protective clothing including coveralls, boots and gloves, following EN 1149 guidance.
- Use appropriate protective footwear and any additional skin protection required by the risk assessment.
Respiratory protection
- Where ventilation is insufficient to maintain exposure below limits, wear a respirator conforming to EN140 fitted with an A/P2 type filter or better.
- Respirators must be used as part of a respiratory protection programme ensuring correct selection, fit-testing, training and maintenance.
- Dry sanding, flame cutting and welding of the dry paint film generate dust and hazardous fumes; use wet methods where possible or adequate local exhaust and suitable respiratory protection.
Hygiene and environmental measures
- Wash hands, forearms and face thoroughly after handling and before eating, drinking or smoking.
- Contaminated work clothing should not leave the workplace and must be washed before reuse.
- Ensure eyewash stations and safety showers are close to work areas.
- Check emissions from ventilation or process equipment to ensure compliance with environmental regulations; install scrubbers or filters where necessary.
*Contenido generado por IA
