MICROSEALER -50 Low Viscosity, polyurethane based primer

CHARACTERISTICS:

MICROSEALER-50 is a one component, low viscosity, polyurethane based primer suitable for many different substrates. It is characterized by its very low viscosity and balanced curing speed which result in excellent wetting, impregnation and paint-over time on different substrates, whether of high, low or no porosity (e.g. glass and metals). Additionally, it can be effectively used on both dry and wet concrete, even green concrete, not only as primer but also as a low-cost sealing solution, increasing, thus, the durability of the substrate. The cured film displays outstanding mechanical properties: Its elongation is >300%, and its tensile strength surpasses 30 N/mm2. Apply with brush or roller. Consumption: 100- 200gr/m2, subject to substrate porosity.

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COMPLIANCE

The adhesion strength of MICROSEALER-50 exceeds the requirements of ΕΟΤΑ (European Organization of Technical Approval).

RECOMMENDED FOR

To be used as primer for:

  • Concrete structures (Humid, damp or wet concrete)
  • ceramic tiles
  • non-porous substrates like glass, marble & metals
  • Also, for use as concrete sealer

LIMITATIONS:

  • Will discolor when used on its own exposed. This is purely visual and does not affect the performance of the membrane.
  • If the concrete is very porous the material may penetrate to a degree that no film is created on the surface. In this case there will be need for subsequent coating in order to create the dust free primed surface. In cases of extreme porosity consider the use of less penetrating version GEODESMO 50.

FEATURES & BENEFITS

  • One component
  • Of low viscosity
  • Easily applicable, even on wet concrete
  • Adheres strongly, even on glassy, non-porous substrates
  • Excellent wetting, impregnation and paint-over time
  • Elastic
  • Many pigment pastes available
  • A low-cost solution for concrete sealing & protection

APPLICATION PROCEDURE

Clean the surface using a high pressure washer, if possible. Remove oil, grease and wax contaminants. Cement laitance, loose particles, mould release agents, cured membranes must also be removed. If there are surface irregularities, we recommend charging MICROSEALER-50 with sand. Apply with brush or roller. Once cured, the main membrane (e.g. HYPERDESMO System) can be applied.

CLEANING

Clean tools and equipment first with paper and then using SOLVENT-01. Rollers will not be reusable.

PACKAGING

1 Lt, 4 Lt, 20 Lt.

SHELF LIFE

Can be kept for 12 months minimum in the original unopened pails in dry places and at temperatures of 5-25 oC. Once opened, use as soon as possible.

SAFETY INFORMATION

Contains volatile flammable solvents. Apply in well-ventilated, no smoking areas, away from naked flames. In closed spaces use ventilators and carbon active masks. Keep in mind that solvents are heavier than air so they creep on the floor. The MSDS (Material Safety Data Sheet) is available on request.

TECHNICAL SPECIFICATIONS

In liquid form (before application):

PROPERTY UNITS METHOD SPECIFICATION
Viscosity (Brookfield) cP ASTM D2196-86 @ 25 oC 40-50
Specific weight gr/cm3 ASTM D1475 / DIN 53217 / ISO 2811 @ 20 oC 0.9-1

 

In cured form (after application):

 

PROPERTY

  

UNITS

  

METHOD

  

SPECIFICATION
Tensile strength at break @ 23 oC Kg/cm2 (N/mm2) ASTM D412 / EN-ISO-527-3 300

(30)
Elongation @ 23 oC % ASTM D412 / EN-ISO-527-3 > 300
 

Dry to touch: On DRY cement

  

hours

  

–

  

6-12
Application of main membrane hours – 12-24
Adhesion to cement mPa ASTM D1640 > 4

 

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