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Staroxy 103 MOT

Moisture and Oil Tolerant Solvent Free Epoxy Primer

Staroxy 103 MOT


Staroxy 103 MOT is a two-component, moisture-tolerant epoxy primer for steel, concrete and other substrates as specified. It is used to prime concrete, steel and other substrates prior to application of other Staroxy Coatings, linings, membranes, sealants and polymer concretes. It achieves a tenacious bond to the substrate and tolerates substrate dampness but not wet surfaces.
Staroxy 103 MOT is a two-component amine cured solvent free epoxy coating. It is transparent. It ensures very good adhesion on most concrete floors in atmospheric environments only. Specially designed for high build floor coatings on properly prepared concrete floor substrates.


Designed for a wide range of floors with various levels of mechanical and chemical exposure. It is a primer for all Stanrose surface coating products. Specially designed for use with the traffic deck system for heavy duty traffic, areas such as ramps, car parks, parking bays, pedestrian walkways, roof decks and industrial floors. Recommended for cold stores, laboratories, hospitals, food and beverage plants, kitchens, high tech manufacturing facilities, dairies, warehouses, factories and hangars. This product when used with Stanrose Deck Guard (Antiskid) Aggregates, is suitable for filling and repairing of cracks, undulations and surface imperfections. Staroxy 103 MOT is used as a primer for other materials in a wide variety of applications. Typical applications include:
• Secondary containment linings
• Tank linings
• Monolithic floor toppings
• In-situ polymer concrete installations
• Trench linings


• Simple application.
• Excellent anchoring to the surface
• Provides high tensile and impact strength.
• Heat and frost resistant
• Stops the creation of dust.
• Vapor block
• Chemical resistant

Technical Properties

• Colour: Clear
• Gloss: Glossy
• Solid contents (% by volume) 99 ± 1%
• Recommended DFT/ Coat: 150 microns
• Drying Time Surface Dry: 4 hours
• Hard Dry: 20 hours
• Mixing Ratio: Resin (2) : Hardner (1) by volume
• Pot life at 25°C: 25 minutes
• Coverage: 5-10m2 per Kg
• Water Absorption (%w/w): Nil
• Specific Gravity 1.00- 1.05 (mixed) All data is valid for mixed material.
• Adhesion to Concrete: >2 N/mm2 (concrete failure) ASTM D 903
• Hardness (SHORE D Scale) > 70 ASTM D 2240
• Resistance to Water Pressure No Leak (1m water column, 24h) DIN EN 1928

Staroxy 103 MOT

Directions for Use

Substrate Requirements:
• To secure lasting adhesion to the subsequent product all surfaces shall be clean, dry and free from any contamination. Substrates Temperatures must be a minimum of 55-60°F. and a maximum of 85°F.
• Laitance deposits are best removed by Planetary diamond disc grinder or by captive blasting followed by vacuum cleaning to remove dust debris.
• Substrate must be clean and free of Dirt, waxes, curing agents and any other foreign material that will interfere with bonding.

Surface preparation:
Remove oil, grease and any other contaminants using thinner. Blast clean to minimum Sa 2½ (Swedish standard SIS 05 5900). If blasting is not practically possible, make full use of mechanical tools to remove loose rust and scale to St.2 Swedish standard. Surface should be clean and dry before application of Staroxy 103 MOT. New concrete or cementitious substrates should have been placed at least 28 days and have a moisture content of less than 5% before topping with Staroxy 103 MOT.
After surface is dry, all repair work like sealing of joints, crack filling of cavities and crevices should be carried out.
If the surface is Tremix or smooth surface then Shot Blasting is carried out to make the surface rough in order to enhance the bonding of the primer.
Concrete defects such as voids, bug holes, excess porosity, and physical and chemical damage are usually filled or repaired prior to the installation of the F/C system. (Materials such as slurries, mortars, and polymer concrete are used to level, smooth and patch concrete surfaces.
The laitance (A thin, weak, brittle layer of cement and aggregate on concrete surface) on in-situ bases and any surface sealer or curing membrane should be entirely removed by suitable mechanized equipment, e.g. shot- blasting, panning or grinding, to expose cleanly the coarse aggregate

Mixing and Application:
1. Pack components are pre-weighed for optimum performance. Never split packs.
2. Stir resin thoroughly and then mix two parts of resin with one part of hardener by volume. Empty contents of Resin into a mixing container and pre-mix to assure the suspension of solids. Stir resin thoroughly and then mix two parts of resin with one part of hardener by volume.
3. Add Hardner and continue to mix to a uniform consistency for 1-2 minutes.
4. Mix with slow speed drill or manually depending on the quantity in mixing bucket and helical spinner head for 2 minutes.
5. Spread the mixture on the floor immediately and allow it to dry for 4 hours.

Method of Application
Primer is normally spread with a brush, floor squeegee or roller and back-rolled with a 3/8" medium nap roller. Care should be taken to minimize the entrapment of air caused by over rolling.

Packaging Size, Storage and Shelf Life

The product should be stored in accordance with national regulations. It should be kept in a cool, well-ventilated area, away from heat, direct sunlight, sparks and children. Handle with care. It has a shelf life of 12 months from the date of manufacturing.
Available in 3 Kg, 6 Kg, 15 Kg, 60 Kg packs and has a maximum shelf life of 12 months in the un-opened containers.

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