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.
Epoxy.com Product #693 Methyl Methacrylate (MMA) Coating is a 100% reactive methyl methacrylate resin.
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.
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 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.
Will yield 16-32 mils at 50-100 square feet per gallon, average.
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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. |
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.
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.
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