INTERTHANE 990 PARTE A INDIVISIBLE KIT

What is Interthane 990 Part A and why choose it?

INTERTHANE 990 PARTE A INDIVISIBLE KIT is the base component of Interthane 990, a two-component aliphatic acrylic polyurethane finish designed for interior and exterior protection. When mixed with its dedicated curing agent, it provides a high-gloss, durable topcoat with excellent long-term recoatability. It is suitable for both newbuilding and maintenance projects in demanding industrial and marine environments where long-lasting cosmetic appearance and resistance are required.

Main features

• Two-pack aliphatic acrylic polyurethane finish for high durability and long-term overcoating capability.
• High gloss appearance for an attractive cosmetic finish on exposed structures.
• Versatile colour range available via the Chromascan tinting system; specific references include white PHB000 and black PHY999.
• Excellent recoatability with extended overcoating intervals at a wide range of temperatures.
• Good application versatility – compatible with airless spray, air spray, brush and roller.
• Suitable for harsh environments such as offshore structures, chemical and petrochemical plants, bridges, pulp and paper mills and the power industry.
• Fire-tested when used in approved marine schemes including surface spread of flame and smoke and toxicity (according to Exova Warringtonfire data for Interthane 990 systems).
• Designed for professional use as part of specified coating systems in industrial and marine projects.

Technical specifications

General product data (Interthane 990 system)

• Chemistry: Two-component aliphatic acrylic polyurethane finish.
• Finish: High gloss.
• Colour: PHB000 White, PHY999 Black and a wide range of colours via Chromascan.
• Volume solids: 57% ± 3% (ISO 3233:1998; depends on colour).
• Typical dry film thickness: 50–75 microns (2–3 mils) dry, equivalent to 88–132 microns (3.5–5.3 mils) wet; marine data sheet also quotes 50 microns dry (88 microns wet) as a typical film.
• Theoretical coverage: 11.40 m²/litre at 50 microns d.f.t., allowing for appropriate loss factors.
• Recommended application methods: Airless spray, air/conventional spray, brush, roller.

Mixing and pot life

• Mix ratio: 6 parts by volume Part A (base) to 1 part by volume Part B (curing agent).
• Curing agent: Part B PHA046 (for marine Interthane 990).
• Induction time: Not required.
• Working pot life (mixed product):
  • -5°C: 26 hours
  • 5°C: 12 hours
  • 15°C: 4 hours (protective specification)
  • 25°C: 2 hours
  • 35–40°C: 45–60 minutes

Drying and overcoating (typical at 50 microns d.f.t.)

• Touch dry (ISO 9117/3:2010):
  • -5°C: 8 hours
  • 5°C: 5 hours
  • 15°C: 150 minutes
  • 25°C: 90 minutes (1.5 hours)
  • 35–40°C: 60 minutes
• Hard dry (ISO 9117-1:2009):
  • -5°C: 60 hours
  • 5°C: 24 hours
  • 15°C: 10 hours
  • 25°C: 6 hours
  • 35–40°C: 3–4 hours
• Minimum overcoating interval with Interthane 990:
  • -5°C: 60 hours (extended)
  • 5°C: 24 hours (extended)
  • 15°C: 10 hours (extended)
  • 25°C: 6 hours (extended)
  • 35–40°C: 4 hours (extended)

Physical and regulatory data (Part A)

• Flash point (typical): 34°C (closed cup, Pensky–Martens).
• Density (Part A, black SDS): approximately 1.338 g/cm³ (EN ISO 2811-1).
• VOC (mixed coating, typical):
  • 420 g/L as supplied (EPA Method 24).
  • 341 g/kg of liquid paint as supplied (EU Solvent Emissions Directive).
  • 379 g/L Chinese National Standard GB23985.
• Typical packaging options (for Interthane 990):
  • 20 litre unit: 17.14 L Part A in 20 L can + 2.86 L Part B in 3.7 L can.
  • 5 US gallon unit: 4.29 US gal Part A + 0.71 US gal Part B.
  • 1 US gallon unit (marine): 0.86 US gal Part A + 0.14 US quart Part B.
• Approximate shipping weight (20 L kit): Part A 23.1 kg; Part B 3.5 kg.
• Shelf life (unopened at 25°C): Part A 24 months minimum; Part B 18 months minimum, subject to re-inspection. Store in dry, shaded conditions away from heat and ignition sources.

Surface preparation and application notes

• All substrates must be clean, dry and free from contamination, prepared in accordance with ISO 8504.
• Interthane 990 should always be applied over a recommended anti-corrosive primer scheme; typical blast standard Sa2½ (ISO 8501-1:2007) or equivalent is specified for damaged areas.
• Recommended primers and intermediates include various Intercure, Intergard, Interseal, Intershield, Interzinc and Interzone products as listed in the technical data sheets.
• For marine use, direct application is acceptable over specific anticorrosive primers such as Intergard 264 (USA), Intergard 400, Intergard 5600/5620/7600, Intershield 300/803/One-2-One and Interstores Alkyd Primer. Tie coats such as Intergard 263, 267 or 269 may be required over other epoxies.
• Two coats may be required by brush or roller, especially over dark undercoats or when using bright lead-free colours such as yellows and oranges.
• Not recommended for permanent immersion service. Premature exposure to ponding water can cause colour change, particularly in dark colours and at low temperatures.
• Surface temperature must be at least 3°C above the dew point. Interthane 990 can cure below 0°C but should not be applied where there is a risk of ice formation on the substrate.

Applications and use cases

Industrial and infrastructure

• Offshore structures: Topsides and external steel subject to aggressive marine atmospheres.
• Chemical and petrochemical plants: External steelwork requiring high-gloss, durable protection.
• Bridges: Exposed structural steel elements where appearance and long-term durability are key.
• Pulp and paper mills: Atmospherically exposed equipment and structures.
• Power industry: Power station structures and associated external plant.

Marine

• Topsides and external superstructure: Cosmetic finish for above-water areas.
• External decks and boottops: Above-waterline areas where good appearance and recoatability are required.
• Newbuilding, maintenance and repair, and on-board maintenance when used within approved Interthane 990 coating schemes.

FAQ

1. What type of coating is Interthane 990 Part A?

It is the base component of a two-pack aliphatic acrylic polyurethane finish, designed to be mixed with a dedicated curing agent (Part B) before application.

2. Can Interthane 990 be used below the waterline or in immersion?

No. The product is not recommended for permanent immersion conditions. It is intended for above-water and atmospheric exposure areas.

3. On which areas of a vessel can this coating be used?

When part of an approved system, it can be used on topsides, external superstructure, external decks and boottops, for newbuilding, maintenance and on-board maintenance.

4. What is the recommended film thickness?

The typical dry film thickness is 50–75 microns (2–3 mils), equivalent to 88–132 microns (3.5–5.3 mils) wet, depending on the specification.

5. How is Interthane 990 mixed?

Mix a complete unit in the supplied proportions: 6 parts by volume of Part A (base) to 1 part by volume of Part B (curing agent). Agitate Part A first, then add all of Part B and mix mechanically.

6. Which application methods are suitable?

Airless spray and conventional air spray are recommended for best appearance. Brush and roller are suitable for small areas or touch-up; two coats may be necessary for uniform coverage.

7. What is the pot life of the mixed product?

Pot life varies with temperature: about 26 hours at -5°C, 12 hours at 5°C, 4 hours at 15°C, 2 hours at 25°C and 45–60 minutes at 35–40°C.

8. Is this product suitable for use by DIY users?

No. The safety data sheets specify that it is intended for use only by professional applicators in industrial situations.

9. Does Interthane 990 have any specific safety hazards?

According to the safety data sheet for Part A, it is a flammable liquid and vapor, causes skin and eye irritation, may cause an allergic skin reaction, may cause respiratory irritation, may cause drowsiness or dizziness, and may cause damage to organs through prolonged or repeated exposure. It is also harmful to aquatic life with long lasting effects.

10. How should equipment be cleaned after application?

Spray and application equipment should be thoroughly flushed immediately after use with recommended cleaners such as International GTA713, GTA733 or GTA056, depending on the system specified.

Section 14 – Transport information

The following information is taken from the safety data sheet for INTERTHANE 990 BLACK PART A:

• UN number (ADR/RID, IMDG, IATA): 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 under ADR/RID, IMDG or IATA.
• ADR/RID tunnel restriction code: (D/E)
• IMDG emergency schedules: F-E, S-E
• Bulk transport according to IMO instruments: Not applicable.
• On-site transport guidance: Always transport in closed, upright and secure containers. Personnel transporting the product should know what to do in case of accident or spillage.

Section 8 – Individual protection measures

Based on the safety data sheet for INTERTHANE 990 BLACK PART A, the following personal protective equipment (PPE) and exposure controls are recommended for professional users:

General hygiene measures

• Wash hands, forearms and face thoroughly after handling chemical products 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.

Eye and face protection

• Use safety eyewear complying with an approved standard.
• Chemical splash goggles are recommended where liquid splashes, mists, gases or dusts may occur.

Hand protection

• Wear chemical-resistant, impervious gloves conforming to relevant standards.
• For prolonged or frequently repeated contact, gloves with protection class 6 (breakthrough time > 480 min according to EN374) are recommended – for example Viton or nitrile gloves with thickness ≥ 0.38 mm.
• For brief contact, gloves with protection class ≥ 2 (breakthrough time > 30 min according to EN374) are recommended – for example nitrile gloves with thickness ≥ 0.12 mm.
• Gloves should be replaced regularly and whenever signs of damage or degradation appear.

Body and skin protection

• Select protective clothing based on the task and risks, approved by a specialist prior to use.
• Where there is a risk of ignition from static electricity, wear anti-static protective clothing; for maximum protection, include anti-static overalls, boots and gloves (see EN 1149 guidance).
• Wear appropriate footwear and any additional skin protection as required by the risk assessment.

Respiratory protection

• Select a respirator that meets the appropriate standards and is used within a respiratory protection program.
• A respirator conforming to EN140 with type A/P2 filter or better is recommended when ventilation is inadequate.
• Dry sanding, flame cutting and welding of the dry paint film will generate hazardous dust and fumes; wet sanding or adequate local exhaust ventilation should be used, supplemented by suitable respiratory protection if exposure cannot be otherwise controlled.

Engineering and environmental controls

• Use only with adequate ventilation; local exhaust or process enclosure may be necessary to keep airborne concentrations below occupational limits and below lower explosive limits.
• Use explosion-proof ventilation equipment.
• Check emissions from ventilation and process equipment to ensure compliance with environmental legislation; scrubbers, filters or equipment modifications may be needed to reduce emissions.

*Contenido generado por IA