PRIME-SHIELD
MC
4390
POLYURETHANE
MOISTURE-CURED
www.glass-shield.com
1-800-361-6652
TM
PRODUCT FEATURES
TECHNICAL DATA
‡Primer loaded with zinc, aluminum and micaceous
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Coating Type
Aromatic polyurethane resins one
compoment
‡Can be applied and cured at temperatures below
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Colour
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Gloss (ASTM D523)
5° +/- 2°
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Packaging
3.78
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Shelf Life
2 years
Flashpoint (ASTM D93)
ž&ž)
Mixing Ratio
None
Induction Time
None
Pot Life
4-6 hours
Volatile organic compound
(VOC)
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Solids (ASTM D1644)
By weight: 75% +/- 2%
By volume: 55% +/- 2%
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50-100 Microns dry
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For severe conditions:
100-200 Microns dry
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Theoretical coverage
22 m2 / L at 25 microns dry
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Application method
Brush, roller, conventional airspray,
airless, HVLP and electrostatic
Temperature resitance
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Thinner
*68&6
Accelerator
SC888
292-1AC
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‡Low V.O.C. compliant
SUGGESTED USE
‡Pulp & Paper mills
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‡Pipelines
‡Chemical reservoirs and storage tanks
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‡Railcars
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PACKAGING, HANDLING & STORAGE
Shipping weight
(approximate)
1 gallon:
12.8 lbs / 5.8kg
Storage indoors
10° - 35° C / 50° - 95° F
CHEMICAL RESISTANCE (spot tests)
SALT SPRAY
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ASTM
Results
System MC-4390 +
polyurethane 2800**
B117
5000 hours
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white polyurethane 2800 series.
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ASTM
Results
Solvent
D1308
Very good
Acids
D1308
Very good
Alkali
D1308
Very good
Oil / grease
D1308
Very good
Detergent
D1308
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1-800-361-6652
PERFORMANCE INFORMATION
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ASTM
Results
Impact resistance: direct
D2794
76 lbs pi
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D4541
>800 lbs with polyurethane 2800 series
SURFACE PREPARATION
MIXING AND THINNING
Prior to the application of PRIME-SHIELD MC 4390, make sure that the
substrate is clean, dry, free of dirt, dust, salt deposit, oil, grease and
other contaminants in order to ensure optimum adhesion. The minimum
commercial recommended surface preparation SSPC-SP-2 or SSPCSP-3 prescribed by the Steel Structure Painting Council. The suggested
standard is SSPC-SP-6.
PRIME-SHIELD MC 4390 is a single component primer; it does not
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well, either manually or mechanically, to ensure a good dispersion of
the pigmentation; otherwise the performance of the product could be
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equipment). Depending on the spray equipment, up to 10% of UC-500S
thinner may be added. The addition of thinner can only be done after
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temperatures will have the reversed effect.
THINNER
VISCOSITY
POT LIFE
ZAHN
CUP
#2
up to 10%
40 to 60 sec
4 to 6 hrs
PRIME-SHIELD
www.glass-shield.com
1-800-361-6652
MC-4390
MOISTURE CURED
APPLICATION
AIRLESS & AIR SPRAY
PRIME-SHIELD MC 4390 can be applied by brush, roller, airspray, airless
and electrostatic. For all air spray and airless application, please refer to the
equipment manufacturer for guidance in achieving proper viscosity.
For HVLP application, please refer to your spray equipment manufacturer
for recommendations on choosing the right tip size.
Manufacturer
*UDFR
Manufacturer
Pump
30 : 1
Spray gun
Fluid hose
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PD[LPXP
Tip size
PRESSURE
DRY FILM THICKNESS
PSI
INTERCOAT
*
MULTIPLE APPLICATIONS TABLE
TOP COAT CLEAR FINISHES
*/$66*8$5'6(5,(
EPOXY 1550 CLEAR COAT
0212*/$660&
AMBER-SHIELD MC 4509
TOP COAT COLOR FINISHES
*/$66*8$5'2800 SERIE
*/$66*8$5'6(0,*/2666(5,(6
SURFACER AND BUILDER PRIMERS
EPOXY 1400, 1500 AND 1700 SERIES
*/$66*8$5'
PRIME-SHIELD MC 4390
VINYL-SHIELD 7342
SATA
HET
K3 RP
Fluid tip
1.4-1.6 ff
1.4-1.6
Air cap
#410 / 414
Fluid line
2400 PSI
minimum
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Conventional HET or JTI
1 to 2 coats
Devilbiss
3/8”
3/8”
Pressure pot
15 - 25 psi
40 psi
Atomizing air
40 - 65 psi
36 psi
CURING SCHEDULE
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generate longer dry times and can affect the performances of the product.
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time is 72 hours without special surface preparation. Contact technical
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off blast SSPC-SP-7 prior to the application of additional coats PRIME6+,(/'0&DSSOLHGEHORZƒ&ƒ)PD\VRIWHQIRUVHYHUDOKRXUV
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technical services for recommendations and test results.
SUBSTRATE PREPARATION PRODUCTS
*66
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Looking for the perfect solutions in the choice of our products?
Tell us about your painting project 1-800-361-6652
NOT RECOMMENDED FOR
‡ Non metallic surfaces
In doubt? Contact technical services at 1-800-361-6652 for proper
guidance in preparing substrate
DISCLAIMER: All information is given in good faith. Since conditions of use are beyond the manufacturer’s
controls, all information contained herein is without warranty, implied or otherwise. All technical data
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detailed coating recommendations.
Dernière révision décembre 2015
www.glass-shield.com
1-800-361-6652
Intercoat
Dry to touch
To recoat
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1 hour
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Hard
6 hours
Full cure
7 days