PPG SigmaGuard 750

    7551
    PPG4176

    PPG SigmaGuard 730 is a two-component, moisture-curing zinc-rich (ethyl) silicate tank coating. For use as tank coating or as a system primer in various paint systems based on unsaponifiable binders, with a high zinc content that results in excellent corrosion protection.

    • Tank coating with excellent solvent and chemical resistance
    • To be used as tank coating or as a system primer in various paint systems based on unsaponifiable binders
    • Can withstand substrate temperatures from –90°C (–130°F) up to 400°C (750°F), under normal atmospheric exposure conditions
    • High zinc content resulting in excellent corrosion protection
    • Good impact and abrasion resistance
    • Certificate for ASTM A-490 class `B` for slip coefficient
    • Recognized corrosion control coating (Lloyd`s register)
    • Must not be used for immersion in alkaline (more than pH 9) or acidic (less than pH 5.5) liquids
    • Complies with SSPC-Paint 20 level 2 and ISO 12944.5

    Colour
    Size
    Finish
    £577.65(ex. VAT)
    £693.18 (inc. VAT)
    Quantity
    Please choose your colour
    Available for Delivery (See Delivery Options Below)

    Description

    PPG SigmaGuard 730, a two-component, moisture-curing zinc-rich (ethyl) silicate tank coating with excellent solvent and chemical resistance that can withstand substrate temperatures from –90°C (–130°F) up to 400°C (750°F), under normal atmospheric exposure conditions.

    SigmaGuard 730 is used as tank coating or as a system primer in various paint systems based on unsaponifiable binders, with a high zinc content that results in excellent corrosion protection.



    Features & Benefits


    • Tank coating with excellent solvent and chemical resistance
    • To be used as tank coating or as a system primer in various paint systems based on unsaponifiable binders
    • Can withstand substrate temperatures from –90°C (–130°F) up to 400°C (750°F), under normal atmospheric exposure conditions
    • High zinc content resulting in excellent corrosion protection
    • Good impact and abrasion resistance
    • Certificate for ASTM A-490 class 'B' for slip coefficient
    • Recognized corrosion control coating (Lloyd's register)
    • Must not be used for immersion in alkaline (more than pH 9) or acidic (less than pH 5.5) liquids
    • Complies with SSPC-Paint 20 level 2 and ISO 12944.5

     

    ReferenceColourSizeGloss Level
    295032Grey13.5 litresFlat



    Product Data


    Two-component, moisture-curing zinc-rich (ethyl) silicate coating.

    Data for mixed product at 20°C (68°F)
    Number of componentsTwo
    Mass density2.7 kg/l (22.5 lb/US gal)
    Volume solids65 ± 2%
    VOC (Supplied)Directive 1999/13/EC, SED: max. 167.0 g/kg
    UK PG 6/23(92) Appendix 3: max. 452.0 g/l (approx. 3.8 lb/US gal)
    Recommended dry film thickness75 - 100 µm (3.0 - 4.0 mils) depending on system
    Theoretical spreading rate8.7 m²/l for 75 µm (348 ft²/US gal for 3.0 mils)
    Pot life12 hours at 20°C (68°F)
    Dry to touch30 minutes
    Overcoating IntervalMinimum: 12 hours
    Maximum: Unlimited
    Full cure after12 hours
    Shelf lifeBinder: at least 9 months when stored cool and dry
    Pigment: at least 24 months when stored pigment moisture free

    Notes:

    • Refer below for more details on spreading rate and film thickness, overcoating intervals and curing times



    Surface Preparation


    Recommended Substrate Conditions and Temperatures

    Substrate conditions

    • Steel; blast cleaned to a minimum of ISO-Sa2½, blasting profile 40 – 70 µm (1.6 – 2.8 mils)
    • A heavy pitted steel substrate is not acceptable

     

    Substrate Temperature & Application Conditions


    • Substrate temperature during application should be between -5°C (23°F) and 40°C (104°F)
    • Substrate temperature during application should be at least 3°C (5°F) above dew point
    • Relative humidity during curing should be above 50%



    System Specification


    System for chemical resistance according to the latest issue of the chemical resistance list.

    • SIGMAGUARD 750: 1x 75-100 µm (3.0-4.0 mils)



    Application


    Instructions for Use

    Mixing ratio by volume: binder to zinc powder 74:26

    • Many of PPG's zinc silicates are supplied as two-pack materials consisting of a container with pigmented binder and a drum containing a bag of zinc powder.
    • To ensure proper mixing of both components, the instructions given below must be followed
    • To avoid lumps in the paint do not add the binder to the zinc powder
      1. Take the bag with zinc powder out of the drum
      2. Shake the binder in the jerrycan a few times to reach a certain degree of homogenization
      3. Pour about 2/3 of the binder into the empty drum
      4. With the jerrycan now reduced in weight and containing more free space, shake it vigorously to obtain a homogeneous mix with no deposits left on the bottom, and add this to the drum
      5. Add the zinc powder gradually to the pigmented binder in the drum and, at the same time, continuously stir the mixture by using a mechanical mixer (keep the speed low)
      6. Stir the zinc dust powder thoroughly through the binder (high speed) and keep stirring until a homogeneous mixture is obtained
      7. Strain mixture through a 30 – 60 mesh screen
      8. Agitate continuously during application (low speed). The use of a dedicated pump with a constant agitation for a zinc silicate coating is recommended

    Note:

    • At application temperature above 30°C (86°F) addition of max 10% by volume of THINNER 90-53 may be necessary

     

    Induction Time


    • None.

     

    Air spray


    Recommended thinner

    • THINNER 90-53

    Volume of thinner

    • 0 - 10%, depending on required thickness and application conditions

    Nozzle orifice

    • 2.0 mm (approx. 0.079 in)

    Nozzle pressure

    • 0.3 MPa (approx. 3 Bar; 44 p.s.i.)

    Note:

    • A dedicated pump for a zinc silicate coating with constant agitation must be used

     

    Airless Spray


    Recommended thinner

    • THINNER 90-53

    Volume of thinner

    • 0 - 10%, depending on required thickness and application conditions

    Nozzle orifice

    • Approx. 0.48 – 0.64 mm (0.019 – 0.025 in)

    Nozzle pressure

    • 9.0 - 12.0 MPa (approx. 90 - 120 bar; 1306 - 1741 p.s.i.)

    Note:

    • A dedicated pump for a zinc silicate coating with constant agitation must be used

     

    Brush/roller


    • Only for touch-up and spot repair

    Recommended thinner

    • THINNER 90-53

    Volume of thinner

    • 5 – 15%

    Note:

    • Apply a visible wet coat with a max. dft of 25 µm (1.0 mils)|same for subsequent coats in order to obtain the required dft

     

    Cleaning Solvent


    Upgrading

    • When for some reason the DFT is below specification and an extra coat of SIGMAGUARD 750 has to be applied. SIGMAGUARD 750 should be thinned down with 25 to 50% THINNER 90-53 in order to obtain a visible wet coat that remains wet for some time
    • This is only valid for spray application



    Spreading Rate and Film Thickness


    DFTTheoretical spreading rate
    75 µm (3.0 mils)8.7 m²/l (348 ft²/US gal)
    100 µm (4.0 mils)6.5 m²/l (261 ft²/US gal)

    Note:

    • Maximum DFT when brushing: 35 µm (1.4 mils)
    • Above 150 µm (6.0 mils) mudcracking can occur

     

    Overcoating interval for DFT up to 75 µm (3.0 mils)


    Overcoating with...Interval-5°C (23°F)0°C (32°F)10°C (50°F)20°C (68°F)30°C (86°F)40°C (104°F)
    ItselfMinimum24 hours24 hours18 hours12 hours6 hours4 hours
    MaximumUnlimitedUnlimitedUnlimitedUnlimitedUnlimitedUnlimited

    Notes:

    • Relative humidity below 50% requires a much longer minimum overcoating interval
    • If part of a coating system and in order to avoid possible popping effects (pinholes) SIGMAGUARD 750 should be sealed with approved coatings
    • SIGMAGUARD 750 is a moisture curing zinc silicate, this means that it cures after sufficient exposure to moisture from the atmosphere during and after application; it is recommended that relative humidity and temperature are measured during the curing time
    • Before entering service or overcoating, a sufficient degree of cure should be obtained
    • When curing conditions are unfavorable or when reduced overcoat times are desired, curing can be accelerated 4 hours after application by:
      • [Option 1] Wetting or soaking with water, keeping the surface wet for the next 2 hours, followed by drying
      • [Option 2] Wetting or soaking with a 0.5% ammonia solution, followed by drying
    • Before overcoating with topcoats, SIGMAGUARD 750 should always be visibly dry and checked on sufficient curing
    • For measuring of the curing, the MEK rub test according to ASTM 4752 is a suitable method: after 50 double rubs with a cloth soaked in MEK (or alternatively THINNER 90-53) no dissolving of the coating should be observed

     

    Curing time for DFT up to 75 µm (3.0 mils)


    Substrate temperatureService- water immersionFull cure
    0°C (32°F)24 hours4 days
    10°C (50°F)18 hours4 days
    20°C (68°F)12 hours48 hours
    30°C (86°F)6 hours48 hours
    40°C (104°F)4 hours48 hours

    Notes:

    • SIGMAGUARD 750 is a moisture curing zinc silicate, this means that it cures after sufficient exposure to moisture from the atmosphere during and after application
    • It is recommended that relative humidity and temperature are measured during the curing time
    • Relative humidity during curing recommended to be above 50%
    • Adequate ventilation must be maintained during application and curing (please refer to information sheets information sheet 1433 and Directives for Ventilation Practice (information sheet 1434)

     

    Pot Life (at application viscosity)


    Mixed product temperaturePot life
    0°C (32°F)24 hours
    10°C (50°F)16 hours
    20°C (68°F)12 hours
    30°C (86°F)6 hours



    Safety Precautions


    • For paint and recommended thinners, see information sheets information sheet 1430, information sheet 1431 and the relevant Material Safety Data Sheets in the attachments section above
    • This is a solvent-borne paint and care should be taken to avoid inhalation of spray mist or vapor, as well as contact between the wet paint and exposed skin or eyes



    References


    Product Details
    4176-552146

    Data sheet

    Manufacturer
    PPG
    For Use By
    Professional Use
    Single, Two or Three Pack
    Two-Pack
    Parts
    Two
    Base Type
    Solvent-borne
    Solvent
    Zinc-rich (ethyl) silicate
    Mixing Ratio
    74:26
    Suitable Substrates
    Steel
    Key Features
    Excellent solvent and chemical resistance that can withstand substrate temperatures from –90°C (–130°F) up to 400°C (750°F)
    Application
    Spray
    Touch Dry (at 20°C)
    30 minutes
    Dry to Handle (at 20°C)
    -
    Dry to Recoat (at 20°C)
    12 hours
    Fully Cured (at 20°C)
    12 hours
    Pot Life (at 20°C)
    12 hours
    Coverage
    8.7 m²/l for 75 µm (348 ft²/US gal for 3.0 mils)
    Recommended Thinner/Cleaner
    90-53
    Unit Contents
    Pigment & binder
    Compatible Primers
    -
    Compatible Topcoats
    -
    Max. Application Temperature
    40°C (104°F)
    Min. Application Temperature
    -5°C (23°F)
    Density
    2.7 kg/l (22.5 lb/US gal)
    Solids by Volume
    65 ± 2%
    Heat Resistance (up-to)
    400°C (750°F)
    VOC
    Directive 1999/13/EC, SED: max. 167.0 g/kg UK PG 6/23(92) Appendix 3: max. 452.0 g/l (approx. 3.8 lb/US gal)
    Shelf Life (from date of manufacture)
    Binder: at least 9 months - Pigment: at least 24 months
    UN Number (Activator)
    UN1263
    UN Number (Base)
    UN3077
    Base Type
    Solvent
    Finish
    Flat
    Application Method
    Spray
    Product Usage Type
    Primer & Topcoat
    Product Range
    SigmaGuard
    Colour Family
    Grey
    Categorised As
    Special Use > Low Temperature Tank & Pipe Lining Coatings
    Seasonal
    Cold Weather
    For Tanks or Pipes
    Tank
    Attachments
    Download


    Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.


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    IMPORTANT SHIPPING & DELIVERY INFORMATION

    PPG SigmaGuard 750 is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.

    Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.

    Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.

    All delivery costs below are excluding VAT


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