Monochem® 21

• Green & universally compliant & USDA approved.
• "Stick-To-Anything" adhesion.
• Hot tire, abrasion & chemical resistance.
• Clear or any custom color high build.
• Self-leveling.
• Solvent-free.

• Solvent Free
• Very Low VOC, Zero HAPs
• 100% Solids
• Low Odor
• Superior Adhesion
• High Tensile Strength
• Universally Compliant
• Hot Tire Resistant
• Chemical Resistant
• Non Blushing
• Self-Leveling
• Custom color matching.
• Acceptable for use in USDA Inspection Facilities
• Compatible with acrylic, epoxy, polyurethane, polyurea topcoats.
• Fire Retardant when mixed with Granite spheres.

Primer: Monochem 21 can be used as an epoxy primer with all the Monochem decking systems.

Monochem 21 can be pigmented to any color or used in combination with color quartz, paint chips, micas or light aggregates. It may also be used over almost all water, oil, solvent, alkyd base, coatings or stains.

Monochem 21 is also ideal for top-coating unknown coatings, glazed, sealed and very smooth nonporous surfaces. Monochem 21 can be applied on concrete, prepared metal (non ferrous), wood, glass, reinforced plastics, polyurethane elastomeric coatings, glazed surfaces and many other nonporous substrates maximizing the adhesion between the substrate and top coat.

Monochem 21 as a Finish Coat: It is also a very durable coating that is recommended for protecting and dust-proofing interior concrete floors in warehouses, manufacturing plants, residential/industrial garages, mechanical rooms and commercial kitchens where seamless, chemically resistant floors are desired. Monochem 21 is not UV stable and must be top coated with a pigmented coating if exposed to UV.

Surface Preparation:

• All surfaces to be coated must be thoroughly dry (<15% moisture) and free of all adhesion affecting contaminates including but not limited to curing compounds, oils, grease, concrete hardeners, loose paint and dirt. The concrete should be between 2500-3000 psi.
• All concrete and stucco must be cured for a minimum of 28 days.
• All holes, cracks and/or joints larger than 1/16” should be caulked with a paintable polyurethane elastomeric caulk.
• The surface temperature must be between 50-90°F during product application.
• Surfaces must display a pH below 9.
• Surfaces with hydrostatic pressure must be corrected prior to product application.
• Make sure to apply a test patch to ensure the proper adhesion, appearance and performance.
• On rare occasions, abrading the surface may be necessary for proper adhesion. This can be determined by the required test patch.

Unpainted Metal Surfaces: All rust and contaminants must be removed by lightly blasting with fine abrasives or by conducting a light etching. To minimize rust formation in areas where rust has previously formed, we require applying Monobond RI, rust inhibitive metal primer within 4 hours after preparing the surface.

• Non Ferrous (galvanized, aluminum, stainless steel): Remove all oils or films with a neutral detergent or emulsion cleaner. Blast lightly with fine abrasives or conduct a light etching. Then rinse using a Zinc treatment and apply Monochem 21 within 4 hours to avoid corrosion.
• Corrosive Metals: Remove all the loose rust, dirt, grease or other contaminants by one of the following depending on the degree of cleanliness required. Blast SSPC-SP3; SSPCSP2; SSPC-SP6; SSPC-SP7. Blast lightly with fine abrasives or conduct a light etching. Then prime with Monobond RI, rust inhibitive primer, within 3 hours to avoid corrosion.

Mixing: Premix Part Aseparately prior to adding Part B (do not mix Part B by itself). Mix 2 parts A with 1 part B, by volume, into a clean container. Mix thoroughly with a low speed (400-600 rpm) drill motor for 2-3 minutes or by hand for 3-5 minutes. Scrape the sides and bottom of the container during mixing to ensure a homogenous material. After mixing is completed, spread MONOCHEM 21 immediately onto the floor.

Pot Life: 20 minute pot life (at 70°F and 50% relative humidity).

Coverage: Coverage rates will vary depending on surface porosity, profile and conditions.

• As a Primer or Coating:
  • Smooth Surfaces: 250-300 sq/ft per gallon (yields 5-6 DMT)
  • Textured Surfaces: 175-200 sq/ft per gallon (yields 8-9 DMT)
• If used as a stand alone coating, apply 2 coats.

Dry Time:

• Topcoat: 3-6 hours (do not exceed 12 hours)
• Light Foot Traffic: 1 Day
• Normal Foot Traffic: 2 Days
• Hot Tire & Heavy Object Exposure: 5 Days

*Excessive humidity or condensation on the surface during curing can interfere with the cure time and can cause discoloration, surface hazing or blushing.

Application:

• Use as is; Do not dilute Monochem 21.
• Primer/Coating Application: Apply immediately after mixing using a high quality foam core short nap roller (1/4”-3/8”). Allow approximately 4-6 hours dry time (when the Monochem 21 is tacky but not wet enough to leave a finger print) before top coating. Do not exceed 12 hours of dry time before topcoating or repriming may be necessary. If Monochem 21 will be used as a primer and finish coat, 2 coats are recommended.
• A non-skid surface can be achieved by broadcasting washed and dried aggregates onto the wet freshly applied Monochem 21 by hand or hopper gun. Then apply two coats of Monochem 21 pigmented (or any other pigmented topcoat) as the chosen top coat at a spread rate of ~175-200 square feet per gallon to cover the sand. Monopole, Inc. recommends the use of aggregates for skid resistance in all of its floor coatings that may be exposed to wet, oily or greasy conditions.
• When using aggregates, color quartz or paint chips, we recommend applying a final clear coat of Monochem 21, Permashield 200 or Permashield 2000 to encapsulate the additives.
• For clear non-skid applications, the Monotex 20 can be mixed into the Part A of the Monochem 21. Please consult the Monotex 20 technical data pages or our technical department for the simple application.

Limitations: 

• Monochem 21 is for interior use only unless protected by a pigmented UV resistant pigmented coating such Permashield 200 or Permashield 2000.
• If solvents (such as Acetone) are added, which we do not recommend, it will make the Monochem 21 combustible or flammable. In this case caution must be taken to protect against contact with sparks or open flames.
• Monochem 21 is meant for non-ferrous surfaces and is not rust inhibitive.
• Monochem 21 is not meant for surfaces containing tannin acids.

Clean-Up: Ideally clean material off of equipment while still wet. Uncured material can be removed with an environmentally safe solvent, as permitted under local regulations, immediately after use. Cured material can only be removed mechanically.