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Interfine 979

A patented high performance, high volume solids content acrylic polysiloxane cosmetic finish providing excellent long term durability. Interfine 979 significantly improves upon the gloss and colour retention exhibited by typical polyurethane finishes.

Intended uses

As a cosmetic finish on above water areas. For use at Newbuilding and Major Refurbishment.

color SYB000-White ; and a range of colours
Finish/Sheen Gloss
Part B (Curing Agent) SYA056 (use SYA076 in EMEA)
Volume Solids 76% (ISO 3233:1998)
Mix Ratio 4.00 volume(s) Part A to 1 volume(s) Part B
Typical Film Thickness 125 microns dry (164 microns wet)
Theoretical Coverage 6.08 m2/litre at 125 microns dft, allow appropriate loss factors
Method of Application Airless Spray, Air Spray
Flash Point Part A 32°C; Part B 55°C; Mixed 35°C

Drying Information

  Substrate Temperature
  5°C 10°C 25°C 35°C
Touch Dry [ISO 9117/3:2010] 6 hrs 5 hrs 3 hrs 2 hrs
Hard Dry [ISO 9117-1:2009] 8 hrs 6.5 hrs 4 hrs 3 hrs
Pot Life

3.5 hrs

3 hrs 2 hrs 1.5 hrs

Overcoating Data

Overcoated By Substrate Temperature
  5°C 10°C 25°C 35°C
  Min Max Min Max Min Max Min Max
Interfine 878 8 hrs ext 6.5 hrs ext 4 hrs ext 3 hrs ext

Regulatory data


218 g/lt as supplied (EPA Method 24) 162 g/kg of liquid paint as supplied. EU Solvent Emissions Directive (Council Directive 1999/13/EC)


VOC values are typical and are provided for guidance purposes only. These may be subject to variation depending on factors such as differences in colour and normal manufacturing tolerances.


When used as part of an approved scheme, this material has the following Certification:

  • Fire Resistance - Marine Equipment Directive compliant
  • Fire Resistance - Surface Spread of Flame (WFR) - (IMO Resolution A653 (16))
  • Fire Resistance - MSC61(67) Smoke & Toxicity (WFR)
  • Fire Resistance - Surface Spread of Flame (WFR) - (BS476:Part 7)
  • Fire retardant: Naval Engineering Standard 711.
  • Fire retardant: Naval Engineering Standard 713

Consult your International Paint representative for details.

System and compatibility

For use on Marine projects, Interfine 979 may only be applied over Intershield 300. Alternative primers may be used, depending upon region. Consult International Paint. Consult your International Paint representative for the system best suited for the surfaces to be protected.

Surface preparations

Use in accordance with the standard Worldwide Marine Specifications. All surfaces to be coated should be clean, dry and free from contamination. High pressure fresh water wash or fresh water wash, as appropriate, and remove all oil or grease, soluble contaminants and other foreign matter in accordance with SSPC-SP1 solvent cleaning.


Interfine 979 should always be applied over a recommended primer coating scheme. The primer surface should be dry and free from all contamination, and Interfine 979 must be applied within the overcoating intervals specified (consult the relevant product data sheet).Areas of breakdown, damage etc., should be prepared to the specified standard (e.g. Sa21⁄2 (ISO 8501-1:2007) and primed prior to the application of Interfine 979 Consult your International Paint representative for specific recommendations.



Material is supplied in 2 containers as a unit. Always mix a complete unit in the proportions supplied. Once the unit has been mixed it must be used within the working pot life specified. (1) Agitate Base (Part A) with a power agitator. (2) Combine entire contents of Curing Agent (Part B) with Base (Part A) and mix thoroughly with power agitator. After mixing Part A and Part B a slight exotherm may be noted, which is typical of this product, and is a result of chemical reaction.


International GTA007. Do not thin more than allowed by local environmental legislation.

Airless Spray

Recommended Tip Range 0.28-0.53 mm (11-21 thou) Total output fluid pressure at spray tip not less than 155 kg/cm2 (2200 p.s.i.)

Conventional Spray

Recommended. Gun Air Cap Fluid Tip DeVilbiss MCB or JGA 704 or 765 E


Application by brush is recommended for small areas only. Multiple coats may be required to achieve specified film thickness.


Application by roller is recommended for small areas only. Multiple coats may be required to achieve specified film thickness.


International GTA007

Work Stoppages and Cleanup

Do not allow material to remain in hoses, gun or spray equipment. Thoroughly flush all equipment with International GTA007. Once units of paint have been mixed they should not be resealed and it is advised that after prolonged stoppages work recommences with freshly mixed units. Clean all equipment immediately after use with International GTA007. It is good working practice to periodically flush out spray equipment during the course of the working day. Frequency of cleaning will depend upon amount sprayed, temperature and elapsed time, including any delays. Do not exceed pot life Limitations. All surplus materials and empty containers should be disposed of in accordance with appropriate regional regulations/legislation.


In the event welding or flame cutting is performed on metal coated with this product, dust and fumes will be emitted which will require the use of appropriate personal protective equipment and adequate local exhaust ventilation. In North America do so in accordance with instruction in ANSI/ASC Z49.1 "Safety in Welding and Cutting."


All work involving the application and use of this product should be performed in compliance with all relevant national Health, Safety & Environmental standards and regulations. Prior to use, obtain, consult and follow the Material Safety Data Sheet for this product concerning health and safety information. Read and follow all precautionary notices on the Material Safety Data Sheet and container labels. If you do not fully understand these warnings and instructions or if you can not strictly comply with them, do not use this product. Proper ventilation and protective measures must be provided during application and drying to keep solvent vapour concentrations within safe limits and to protect against toxic or oxygen deficient hazards. Take precautions to avoid skin and eye contact (ie. gloves, goggles, face masks, barrier creams etc.) Actual safety measures are dependant on application methods and work environment.


Overcoating information is given for guidance only and is subject to regional variation depending upon local climate and environmental conditions. Consult your local International Paint representative for specific recommendations. The relative humidity should be between 40% and 85% for optimum cure of Interfine 979. Cure times may vary outside these parameters. Apply in good weather. Temperature of the surface to be coated must be at least 3°C above the dew point. For optimum application properties bring the material to 21-27°C, unless specifically instructed otherwise, prior to mixing and application. Unmixed material (in closed containers) should be maintained in protected Storage in accordance with information given in the Storage Section of this data sheet. Technical and application data herein is for the purpose of establishing a general guideline of the coating application procedures. Test performance results were obtained in a controlled laboratory environment and International Paint makes no claim that the exhibited published test results, or any other tests, accurately represent results found in all field environments. As application, environmental and design factors can vary significantly, due care should be exercised in the selection, verification of performance and use of the coating. In the overcoating data section 'ext' = extended overcoating period. Please refer to our Marine Painting Guide - Definitions and Abbreviations available on our website.

Unit size

Unit size Part A Part B
  Vol Pack Vol Pack
20 lt 16 lt 20 lt 4 lt 5 lt
5 US gal 4 US gal 5 US gal 1 US gal 1 US gal

Unit shipping weight

Unit size Unit Weight
20 lt 28.7 Kg
5 US gal 58.5 lb


Shelf Life Part A - 12 months minimum at 25°C. Part B - 6 months maximum at 25°C. Subject to reinspection thereafter. Store in dry, shaded conditions away from sources of heat and ignition.