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TECHNICAL DATA SHEET I SECTION 6.7
POLYEURO MPL-558
®
Two Component
Modified Polyurea Protective Coating

Product Description Technical Data
Polyeuro MPL-558 is a two component, 1:1, 100% solids, fast
®
set, liquid applied, modified polyurea-liner system for metal, Mix Ratio by Volume 1A : 1B
concrete, fiberglass and wood surfaces. Pot Life @ 150ºF (65.5ºC), 50% R.H. 3-5-Seconds
Features Tack-Free Time (150 mils thickness) 20-30 Seconds
• Abrasion and Impact Resistant Recoat Time 0 - 6 hours
• Chemical Resistance Viscosity at 150-160°F (66.5-71°C)
• High Build Side-A 120 ± 20 cps
200 ± 20 cps
Side-B
• Low-Temperature Flexibility
• Quick Drying Density (Side-A & Side-B Combined) 9.19 lbs/gal
• Seamless Specific Gravity (Side-A & Side-B Combined) 1.10
• Tough and Elastomeric Flash Point > 200°F (93.3°C)
Hardness, ASTM D2240 55 ± 5 Shore D
Typical Uses
Tensile Strength, ASTM D412* 2800 ± 200 psi
• Boat Linings 19.31 ± 1.37 MPa
• Cargo Holds Elongation, ASTM D412* 200% ± 20%
• Cargo Liners Tear Strength, ASTM D624* 400 ± 50 pli
• Containment Areas 69.93 ± 8.8 kNm
• Encapsulation of Fiberglass Bodies and Polystyrene Service Temperature Dry -20ºF to 250ºF
Foams - 4.0°C to 93°C
• Horse Trailers *These physical properties from sample sprayed with Graco Foam Cat 200 @ 2000 psi minimum,
• Industrial Floorings with Gusmer GX7-400 mechanical purge gun @ 150-160°F (65°C to 71°C). Different machine and
parameter will change these properties. User should perform their own independent testing as
• Truck-Bed Liner properties are approximate.
• Utility Vehicles
• Walkways proportional to surface preparation. Most failures in the
• Waterproof Decking performance of surface coatings can be attributed to poor
surface preparation. Polyurea coatings rely on the structural
strength of the substrate to which they are applied. All sur-
Packaging faces must be free of dust, dirt, oil, grease, rust, corrosion
and other contaminants. When coating substrates previously
10-gallon kit 5 gallons (18.9 liters) Side-A and 5 used, it is important to consider the possibility of substrate
gallons (18.9 liters) Side-B absorption, which may affect the adhesion of the coating
system, regardless of the surface preparation. Polycoat
100-gallon kit 50 gallons (189 liters) Side-A and 50 recognizes the potential for unique substrates from one project
gallons (189 liters) Side-B to another. The following information is for general reference,
and for project-specific questions, contact Polycoat.
NEW AND OLD CONCRETE
Colors Refer to SSPC-SP13/NACE 6, or ICRI 03732: CSP 3-5. New
Clear/Neutral/Tan/Grey/Black. Custom colors are available concrete must be cured for 28 days prior to product applica-
upon request. Color Packs, when used, must be added to tion. Surface must be clean, dry, sound and offer sufficient
Side-B. profile for product adhesion. Remove all dust, dirt, oil, form
release agents, curing compounds, salts, efflorescence,
Due to its aromatic composition, Polyeuro MPL-558 will tend to laitance and other foreign matter by shotblasting and/or
yellow or darken in color and will become flat after exposure suitable chemical means, in accordance with local chemical
to UV light. Polyeuro MPL-558 may be top-coated within twelve regulations. Rinse thoroughly, to achieve a pH between 8.0 and
hours of application with an aliphatic polyurethane/polyurea/ 11.0. Allow to dry completely. If old concrete has a surface that
polyaspartic coating for a colorfast finish. has deteriorated to an unacceptably rough surface, Polycoat
Coverage Products PC-260 or a mixture of Polyprime 21 and sand should
Polyeuro MPL-558 may be applied at any rate to achieve desired be used as a repair agent for cracks, spalls, bug holes and
voids.
thickness. Theoretical coverage for 1 mil (0.254 microns)
thickness is one gallon per 1600 sqft (3.78 liters per 149 sqm). CONCRETE SURFACE PREPARATION REFERENCE:
Estimating Formula: (1600 sqft per gal /Dry Mil Thickness) x ASTM D4258 - Standard practice for cleaning concrete
Solids Content = Application Rate per gallon. ASTM D4259 - Standard practice for abrading concrete
Surface Preparation ASTM D4260 - Standard practice for etching concrete
In general, coating performance and adhesion are directly

POLYCOAT PRODUCTS TEL 562.802.8834 | FAX 562.921.7363 Section 6.7
info@polycoatusa.com | www.polycoatusa.com