SuperTectum
TopCoat 420

 
SuperTectum
TopCoat 420
One-component, transparent, glossy, aliphatic, polyurethane protective varnish


One-component polyurethane protective varnish, the aliphatic composition allows to avoid yellowing caused by direct exposure to sunlight.

The material is based on pure elastomeric hydrophobic polyurethane resin which provides excellent mechanical, chemical, thermal, UV and natural element resistance properties.
Application area

• Protective varnish for industrial floors
• Natural stone and wood
• Wooden structures
• Garden and park furniture
Features and benefits
Quick curing
Strong and uniform adhesion over the entire surface
Excellent heat and UV resistance, it will not yellow, peel or soften to 80° C
Excellent resistance to mechanical stresses, high tensile strength and abrasion resistance.
Application procedure
1
The base must be dry, chemically neutral, even, smooth, strong - without cracks and damages, clean - without dust, rust, or loose particles. Cracks, damages, holes should be covered with a suitable material. Traces of contamination from oil, oil materials, or chemicals must be removed. It is recommended to refine the surface mechanically.
2
Glossy surfaces must be precessed with SuperTectum Trans Primer. When determining primers for the other surfaces, please contact our technical department.
3
Immediately prior the application, the material must be mixed with a low speed mixer (300 g/min), avoiding air penetration into the material, that can lead to blistering on the cured surface.
4
Apply with brush, roller or airless spraying in two or three layers. A waiting time between layers is 6-24 hours. Minimum material flow rate for one layer 100 -200 g/m2 , in dependence of a base.
General information
Packaging
20 l, 4l
Shelf life
It can be stored for 12 months minimum in the original unopened pails in dry areas and at a temperature from 5° C to 25° C. Once opened, use as soon as possible.
Safety information
Contains volatile flammable solvents. Apply in well-ventilated, no smoking areas, away from naked flames. Indoors, use ventilators and carbon active masks. The MSDS (Material Safety Data Sheet) is available on request.
Technical specifications
In liquid form (before application):
Properties
Units
Method
Specification
Viscosity (Brookfield)
cP
ASTM D2196-86 at 25°C
90 – 100
Specific weight
g/cm3
ASTM D1475 / DIN 53217 / ISO 2811 at 20°C
+/- 1
Cure time at 77° F (25° C) and 55% RH
hours
-
4-6
Recoat Time
hours
-
6-24
In dry form (after application):
Properties
Units
Method
Specification
Service temperature
oC
-
-40 to 80
Maximum temperature in the short time (shock)
oC
-
200
Hardness
Shore D
ASTM D2240 / DIN 53505 / ISO R868
>50
Tensile strength at break at 23 ° C
Kg/cm2
(N/mm2)
ASTM D412 / EN-ISO-527-3
500
(50)
Elongation at 23 ° C
%
ASTM D412 / EN-ISO-527-3
>60
Water vapor transmission
g/m2 · hour
ASTM E96 (Water Method)
0.8
QUV Accelerated Weathering test (4h UV, 60° C (UVB -lamps) and 4h COND at 50° C)
-
ASTM G53
Passed
(2 000 hours)
Hydrolysis (potassium hydroxide 8%, 10 days at 60° C)
-
-
significant elastomeric property change
Hydrolysis (sodium hypochlorite 5%, 10 days)
-
-
significant elastomeric property change
Get TDS on this material
ANT ALLIANCE is an exclusive supplier of SUPERTECTUM products worldwide.