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INTERZINC 22 DATA SHEET

INTERZINC 22 DATA SHEET

INTERZINC 22 DATA SHEET

Product catalog summary
Product Description: A two-pack, solvent-based, inorganic zinc-rich ethyl silicate primer with 85% zinc by weight in the dry film, providing excellent corrosion protection for steel substrates. It serves as a base coat for various above-water organic coating schemes, enhancing corrosion resistance, suitable for new building or maintenance and repair.
Product Information: The primer has a volume solids content of 63% ±2% and a typical film thickness of 3 mils dry (4.8 mils wet). Theoretical coverage is 337 ft²/US gal at 3 mils dft. Application methods include airless spray, brush, conventional spray, and roller. The mix ratio is 3.17 parts A to 1 part B, with a flash point of 57°F for Part A and mixed.
Drying and Overcoating: Drying times vary with temperature, with touch dry times ranging from 7 to 30 minutes and hard dry times from 30 minutes to 3 hours. Pot life ranges from 2 to 12 hours depending on temperature. Overcoating intervals depend on ambient conditions and relative humidity.
Regulatory Data: VOC content is 490 g/lt (4.09 lb/US gal) as supplied, with compliance to EPA Method 24 and EU Solvent Emissions Directive.
Surface Preparation: Surfaces must be clean, dry, and free from contamination. High-pressure fresh water wash or solvent cleaning is recommended. For new building, Interzinc 22 can be applied over some fresh zinc silicate shop primers, while other primers require complete removal by abrasive blast cleaning.
Application: Mixing involves adding Part B (zinc dust) to Part A while stirring. The material should be filtered and constantly agitated during spraying. Recommended application methods include airless spray with specific equipment settings. Thinning is not recommended under normal conditions.
Safety: Proper ventilation and protective measures are necessary during application to maintain safe solvent vapor concentrations. Emergency contact numbers are provided for different regions.
Limitations: Overcoating intervals depend on humidity and environmental conditions. The surface must be clean and free from zinc salts and corrosion products. Application should occur in good weather, with surface temperatures at least 5°F above the dew point.
Storage and Availability: The product has a shelf life of 6 to 12 months at 77°F, requiring low flash storage. Availability may vary by region.
Important Note: Users should verify the current data sheet and consult International Paint representatives for specific recommendations. Liability for product performance is limited unless agreed in writing.
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Catalog excerpts

INTERZINC 22 DATA SHEET-1

Inorganic Zinc-Rich Silicate INTENDED USES A two pack, solvent based, inorganic zinc rich ethyl silicate primer, containing 85% zinc by weight in the dry film. Provides excellent corrosion protection to correctly prepared steel substrates. As a base coat for a wide range of above water organic coating schemes to greatly enhance corrosion resistance. For use at Newbuilding or Maintenance & Repair. Part B (Curing Agent) Volume Solids Typical Film Thickness Theoretical Coverage Flash Point Induction Period 3.17 volume(s) Part A to 1 volume(s) Part B 337 ft2/US gal at 3 mils dft, allow appropriate loss factors Airless Spray, Brush, Conventional Spray, Roller Part A 57°F ; Part B Not Applicable ; Mixed 57°F Drying Information Overcoating Data - see limitations Substrate Temperature Note Overcoating is dependant upon ambient conditions. Figures have been determined at the quoted temperature and 65% relative humidity, (see Limitations) REGULATORY DATA 490 g/lt (4.09 lb/US gal) as supplied (EPA Method 24) 190 g/kg of liquid paint as supplied. EU Solvent Emissions Directive (Council Note: VOC values are typical and are provided for guidance purposes only. These may be subject to variation depending on factors such as differences in color and normal manufacturing tolerances. Referto Chapter 631 - Naval Ships Technical Manual, Paragraph Marine Coatings

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INTERZINC 22 DATA SHEET-2

Inorganic Zinc-Rich Silicate When used as part of an approved scheme, this material has the following certification: • Food Contact - Carriage of Grain (NOHA) Consult your International Paint representative for details. Consult your International Paint representative for the system best suited for the surfaces to be protected. 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...

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INTERZINC 22 DATA SHEET-3

Inorganic Zinc-Rich Silicate Airless Spray Conventional Spray Interzinc 22 is supplied in 2 parts, a liquid Binder base component (Part A) and a Powder component (Part B). The Powder (Part B) should be slowly added to the liquid Binder (Part A) whilst stirring with a mechanical agitator. DO NOT ADD LIQUID TO POWDER. Material should be filtered prior to application and should be constantly agitated in the pot during spraying. Once the unit has been mixed it should be used within the working pot life Not recommended under normal conditions of use. Use International GTA803 or International GTA415...

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INTERZINC 22 DATA SHEET-4

Inorganic Zinc-Rich Silicate The minimum overcoating interval is dependant on the relative humidity. At relative humidities less than 65% the minimum recoat period may by extended. This should be confirmed by carrying out a solvent rub test. Consult International Paint for details. The maximum overcoating interval is normally indefinite but will be dependent on the weather and environmental conditions. The Interzinc 22 surface must be clean, dry and free from soluble zinc salts and zinc corrosion product. For overcoating procedures consult International Paint. Overcoating information is given...

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