MICROPRIMER - Low viscosity polyurethane based primer - Liquid products

MICROPRIMER - Low viscosity polyurethane based primer

MICROPRIMER is a one component, low viscosity, 100% aliphatic polyurethane based primer, it is ideal as a primer for DUROFLEX sealants. It is characterised by its very low viscosity, excellent impregnation, non- yellowing (non-staining) properties combined with a relatively fast cure speed and most importantly its excellent adhesion on both non-porous and porous substrates.

AREAS OF USE

To be used as primer for:

DUROFLEX and DUROFLEX PRO sealants when a non staining primer is required
Ceramic tiles,
Non-porous substrates like glass, marble & metals.

Also, for use as concrete sealer.

TECHNICAL FEATURES

100% aliphatic Polyurethane;
No yellowing, no staining
One component.
Low viscosity.
Relatively quick curing
Adheres strongly, even on glassy, non-porous substrates.
Excellent wetting, impregnation and paint-over time.
Many pigment pastes available.

USE OF MATERIAL

50 – 200 g/m2, depending on the substrate porosity.

APPLICATION

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. Apply with brush or roller depending on the surface to be primed at a consumption of 50-200 g/m2. Ensure primer has cured before applying main sealant.

CLEANING

After use the tools can be cleaned with paper towel and then xylene or solvent nafta. Rollers may not be reusable.

TEMPERATURE LIMITS

Application temperature range between + 5 oC and + 30 oC.

TECHNICAL DATA

In liquid form (before application):

Characteristic	Values	Remarks
Viscosity (Brookfield)	20 mPas	ASTM D2196-86 @ 25 oC
Density @ 20 oC	0.9 -0.95 g/cm3	ASTM D1475 / DIN 53217 / ISO 2811

In cured form (after application):

Characteristic	Values	Remarks
Touch dry on dry cement	6 hours	DIN 52455 / EN-ISO-527-3
Tensile strength at break @ 23 oC	400 Kg/cm2(40 N/mm2	ASTM D412 / EN-ISO-527-3
Elongation @ 23 oC	>50%	DIN 52455 EN-ISO-527-3
Adhesion to cement	4 mPa	ASTM D1640

PACKAGING

Supplied in 1 and 4 liter cans.

STORAGE

May be stored for up to 12 months in its original packaging in a dry area at ambient temperature between 5°C and 25°C. After opening apply it soon as possible.

SAFETY PRECAUTIONS

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. For further information ask for the safety data sheet.

Legal notice:
This technical datasheet and installation guide are based in laboratory results and our experiments. The amount of material used and the given application process can be affected by the specific construction conditions. The contractor is responsible to control our recommendations based on preliminary tests, and to provide the necessary conditions for appropriate incorporation of the product. We accept no liability for damages caused by improper workmanship. For further information ask for the product safety data sheet.

Datasheet

Declaration of performance

Safety datasheet

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