Category:
Epoxies
P-21
P-21 Polyurea Basecoat/Primer
About the product
Product Overview
P-21 is a two-component clear polyurea coating for use as a primer on concrete and as a basecoat for broadcast aggregates and flake. It is the perfect choice for priming concrete that has been exposed to oils, or when quick turn-around time is required. It comes in three speeds, Summer, Winter and High Heat. All three speeds use the same Part B.
Uses
P-21 is most often used as a tinted basecoat for flake systems or as a concrete primer . It has excellent adhesive properties and can be used as a primer for tinted Polymer Nation finish coats. It is not inteded as a finish coat as it will amber.
Preparation
The coating installer should fully read and understand ICRI310.2R-2013 and OSHA 29 CFR 1926.1153 before starting preparatory work. The aim, of preparing a substrate for coating applications, is to roughen the surface, remove weak layers, contaminants, dirt, debris and present a solid, clean, dry substrate for the primer. If unsure as to the level of preparation needed contact Polymer Nation at techservice@polymernation.com
Product Details
Name
P-21
Category
Epoxies
Kit Yield in Gallons
3
Material can be supplied in larger packaging upon request and with minimum quantities
Number of Mixes Per Kit
N/A
N/A
Number of Components
2
N/A
Mix Ratio Liquids by Volume
2:1
It is always preferred to mix the entire kit, whenever possible, to avoid off-ratio mixtures
Ideal Application Temperatures
50-80F
Verify that substrate temperature is above 5 degrees of dewpoint during application and cure of material to avoid a potential amine blush
Mixed Viscosity in cP@25C/77F
350-450
Warmer temperatures will reduce viscosity and lower temperatures will increase viscosity
Gel Time
25 min.
Warmer temperatures will decrease gel time and lower temperatures will increase gel time
Dry to Touch
1.5 Hours
Warmer temperatures will reduce time and colder temperatures will increase time
Through Dry
2 Hours
Warmer temperatures will reduce time and colder temperatures will increase time
Dry to Walk
4 Hours
Warmer temperatures will reduce time and colder temperatures will increase time
Dry to Lightly Use
8 Hours
Warmer temperatures will reduce time and colder temperatures will increase time
Full Cure
3 Days
Warmer temperatures will reduce time and colder temperatures will increase time
Shore Hardness at 24 Hours
20
Warmer temperatures will increase hardness
Shore Hardness at 7 Days
40
Warmer temperatures will shorten time to reach full hardness
Gloss @ 60 Degree Angle
60-70
Applying material close to dew point will decrease gloss and may result in an amine blush
VOC’s of Mixed Material
<50 g/L
EPA Method 24
Color Scale per ASTM D1500
0.5-1
Clear to slightly amber before colorants are introduced
Solids by Volume Mixed
100%
N/A
Storage
60F-90F
Store material between 60-90 degrees F in a protected dry location.
Odor
Subtle
Measuring odor offensiveness is difficult so experience with chemicals has been consulted here
Application Thickness in Mils
8-10 mils, 150-200 square feet per gallon.
N/A
Coverage Per Mix
Disposal
Dispose of material, containers, solvents, etc. per Federal, State and local guideline, rules and laws
N/A
Available Colors
Clear
N/A
Mixing & Installation
Combine 2 parts A and 1 part B into a single container, large enough to accept the entire kit. Mix at 350 RPM for 2-3 minutes using an appropriate mixing blade and making sure not to introduce excessive air into the solution. Pour the entire content from the container onto the floor and follow normal squeegee and back roll techniques. Material can also be bucket rolled on smaller projects. Recoat within 2-24 hours. Clean tools with a solvent similar to Xylene or Acetone.
Other Product Names
Polymer Nation believes the information contained herein to be true and accurate. Information contained herein is for evaluation purposes only.
Product HIghlights
Exceptional Performance, Durability, and Safety in Every Application
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Most commonly Serviced Markets
Although most our products can be used on any market, we see some common trends between certain products and certain markets.
Available Colors
If you don't see a color you like here, some custom colors can be available upon request. Please contact us for more details!
Product Documentation
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