Epoxy.com Product #693
Methyl Methacrylate (MMA) Coating
For Top Coating All Epoxy.com Methyl Metacrylate Systems
Reference only, Replaced by Product
#699
DESCRIPTION
Epoxy.com Product #693 Methyl Methacrylate (MMA) Coating is
a 100% reactive, medium viscosity methyl methacrylate resin developed as a
topcoat for exterior or interior use with Epoxy.com MMA Systems. Epoxy.com
Product #693 Methyl Methacrylate (MMA) Coating is semi-flexible for outside use
and will not yellow after
curing. Its excellent clarity makes it ideal for sealing color quartz and vinyl
flake systems. It is excellent for
exterior applications such as parking decks, concrete and steel stairs, ramps,
and numerous other applications.
USES
- Parking decks
- Steel and Concrete Stairs
- Ramps
- Wooden and Concrete Decks
- Balconies
- Driveways
ADVANTAGES
- Low temperature accelerators are available for positive cures at temperatures from 32° to 55°F.
- Excellent resistance to a wide range of chemicals.
- Easy to apply by conventional painting techniques.
- Clear after curing.
- Suitable for USDA food handling areas.
- Quick recoat time 45 minutes to 1 hour.
- Flexibility makes it ideal for cold temperature, over wood, and outside
uses.
CONSIDERATIONS
- Concrete must be dry, free of dirt, waxes, curing agents and other foreign
materials.
- Do not store outside in direct sunlight, storage temperature must be < 80°F.
- Substrate must be completely dry.
- On or below grade installation must have an efficient vapor barrier under
the slab (minimum 10-15 mil).
- Moisture vapor transmission must be less than 3 pounds per ASTM-F-1869
and less than 80% RH per
ASTM F-2170.
COMPOSITION
Epoxy.com Product #693 Methyl Methacrylate (MMA) Coating is a 100% reactive
methyl methacrylate resin.
APPLICATION
SURFACE PREPARATON
Surface Preparation is the most critical portion of any successful resinous flooring system application. All
substrates must be properly prepared as outlined in
Epoxy.com Surface Preparation Guide.
MIXING/APPLICATION
Epoxy.com Product #693 Methyl Methacrylate (MMA) Sealer and Coating requires
the addition of Epoxy.com Product #695 MMA Hardener to start the hardening
process. The amount of hardener must be adjusted to the respective surface temperature (see table
below). At temperatures below 40 ° F, Epoxy.com Product #696 Accelerator must be used in addition to the amount of hardener used at
the 40°F level (about ½ oz by
vol./gal. @ 32°F up to 2.0 oz by vol./gal. @ -20°F).
For Epoxy.com Product #693 MMA Resin |
Temp. (°F) of Resin,
Air & Floor Surface |
Hardener % by Wt.
Based on Wt. of
#693 Resin |
Hardener by Vol.
(oz.) Based on
Gallon of #693 Resin |
Pot Life (min.) | Harden Time (min.) |
| +40 | 3.0 | 5.5 | Approx. 40 | Approx. 60 |
| +50 | 2.5 | 4.5 | Approx. 30-35 | Approx. 50 |
| +60 | 2.0 | 3.5 | Approx. 25-30 | Approx. 45 |
| +70 | 1.0 | 2.0 | Approx. 20 | Approx. 40 |
Epoxy.com Product #693 Methyl Methacrylate (MMA) Coating must be applied 50-100 sq. ft./gal. (16-32 mils) for safe
through-hardening. To avoid yellowness do not apply more than 80 mils (20 sq ft/gal.).
For outdoor applications add 1% Epoxy.com Product #693 UV Inhibitor at a
rate of 1% by volume. Pigmented topcoats are achieved by adding pigment packs (1 quart per 5 gallons
resin) to Epoxy.com Product #693 Methyl Methacrylate (MMA) Coating.
Apply material with a notched trowel or squeegee and back roll with a short nap
mohair roller.
Broadcast uncured Epoxy.com Product #693 with Epoxy.com Product #77
Broadcast aggregate at a rate of about 1 lb per square foot.
CLEAN UP
Clean skin with soap and water; use MEK, xylene, or clean proprietary epoxy thinners for equipment.
Consult Material Safety Data Sheet for safety and health precautions.
COVERAGE
Will yield 16-32 mils at 50-100 square feet per gallon, average.
COLOR SELECTION
Contact Epoxy.com Sales Department
TECHNICAL DATA
PHYSICAL PROPERTIES |
| Working Life | 20-40 min. will vary with Temp
& amount of hardener |
| Recoat time | 45-60 minutes |
| Solids Content | 100% |
| Mix Ratio | See chart above |
| Viscosity | 220-225 cps approx. |
| Weight Per Gallon | 8.1 lbs. |
MAINTENANCE
Epoxy.com Product #693 Methyl Methacrylate (MMA) Sealer and Coating is considered to be a low maintenance flooring solution. Certain textures and environments,
however, require specific cleaning with bristled brushes. Due to the thermoplastic character of MMA resins,
black marks can occur from fork lifts and tires skidding.
STORAGE
Store in a cool and dry place, below 80°F, out of direct sunlight. Do not store near open flame or food. Shelf life
is 6 months in the original unopened containers.
HELPFUL HINTS
Adequate cross ventilation should be provided. Good ventilation during the processing ensures a good cross
linking and hardening. Read, understand and follow Material Safety Data Sheets and Application Instructions
prior to use.
Use only as directed. If substrate and/or material temperature is above 90°F, DO NOT apply material.
Keep Out of Reach Of Children