Product Data Sheet Show all documents

SikaCor® PUR System

1-pack polyurethane coating materials for steel

Moisture-curing 1-pack coating materials based on polyurethane.
SikaCor® Zinc PUR:
Versatile, highly pigmented, zinc dust containing primer.
SikaCor® PUR-1:
Filled with micaceous iron oxide and is used e.g. as intermediate or travel coat.
The SikaCor® PUR System can be overcoated with the 2-pack PUR-topcoats SikaCor® EG-4 and SikaCor® EG-5. Low solvent content referring to Protective Coatings Directive of German Paint Industry Association
(VdL-RL 04).

  • Fast curing
  • Tough-elastic and solid, non-brittle
  • Applicable even under difficult application conditions, for example at low temperatures and / or high air humidity
  • Very good corrosion protection
Product Data Sheet Show all documents

Usage

Corrosion protection for steel structures and galvanized steel in aggressive atmosphere, e.g. marine and industrial climate.  

Advantages

  • Fast curing
  • Tough-elastic and solid, non-brittle
  • Applicable even under difficult application conditions, for example at low temperatures and / or high air humidity
  • Very good corrosion protection

Packaging

SikaCor® Zinc PUR

30 kg net.

SikaCor® PUR-1

18 kg net.

SikaCor® EG-4

30 kg, 12.5 kg and 3 kg*) net.

SikaCor® EG-530 kg, 10 kg and 3 kg*) net.
Sika® Thinner S25 l, 10 l and 3 l
Sika® Thinner EG25 l, 10 l and 3 l

*) Purchase of individual 3 kg containers in variety of colours is possible through specialized retailers                

System Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

  • SikaCor® Zinc PUR and SikaCor® PUR-1 are approved according to German Standard 'TL/TP-KOR-Stahlbauten, Blatt 89`.
 
System information

Shelf life

6 months

2 years for SikaCor® EG-4 and SikaCor® EG-5

Storage conditions

In originally sealed containers in a cool and dry environment.

Density

SikaCor® Zinc PUR

~2.8 kg/l

SikaCor® PUR-1

~1.6 kg/l

SikaCor® EG-4

~1.4 kg/l

SikaCor® EG-5~1.3 kg/l

Solid content


SikaCor® Zinc PUR

~65 % by volume
~89 % by weight


SikaCor® PUR-1

~58 % by volume
~78 % by weight


SikaCor® EG-4

~55 % by volume
~70 % by weight


SikaCor® EG-5		~59 % by volume
~72 % by weight
Technical Information

Chemical resistance

Industrial and marine atmosphere, water, sewage, sea water, oil, grease, drew salts.

Temperature resistance

Dry heat up to + 150°C, short term up to max. + 180°C
Damp heat up to + 60°C

An exposure to high temperatures can lead to color changes.

Application

Application Information

Thinner

Sika® Thinner S
If necessary max. 5 % Sika® Thinner S may be added to adapt the viscosity.

Material temperature

Min. + 5°C

Relative air humidity

Min. 30 %, max. 98 %, surface temperature shall be at least 3 K above dew point.
The surface must be dry and free from ice.

Surface temperature

Min. 0°C

Waiting time to overcoating

Between primer coat and intermediate coat (at + 20°C):

Min.

4 h
Max.3 months

In case of longer waiting times please contact us.

Drying time

Final drying time
Depending on layer thickness and temperature final hardness is achieved within several days.
Application consumption

Consumption

Theoretical material-consumption/VOC without loss for medium dry film thickness:

SikaCor® Zinc PUR 1

Dry film thickness80 µm
Wet film thickness125 µm
Consumption0.345 kg/m2
VOC38 g/m2


SikaCor® PUR-1 1

Dry film thickness80 µm
Wet film thickness140 µm 
Consumption0.220 kg/m2
VOC49 g/m2


SikaCor® EG-4

Dry film thickness80 µm
Wet film thickness145 µm
Consumption0.205 kg/m2
VOC61 g/m2


SikaCor® EG-5

Dry film thickness

60 µm

80 µm
Wet film thickness100 µm130 µm
Consumption0.130 kg/m20.170 kg/m2
VOC33 g/m244 g/m2

1 Apart from small areas the dry film thickness of 150 µm of SikaCor® Zinc PUR and 180 µm of SikaCor® PUR-1 should not be exceeded per application.
Application steps

SURFACE PREPARATION

Steel:
Blast cleaning to Sa 2 ½ according to ISO 12944-4.

Free from dirt, oil and grease.
 

Hot dip galvanized steel, stainless steel and aluminium:

Free from dirt, oil, grease and corrosion products.

In case of permanent immersion and condensation the surfaces must be slightly sweep blasted with a ferrite-free blasting abrasive.


For contaminated and weathered surface e.g. galvanized and primed areas we recommend to clean with SikaCor® Wash.

MIXING

All materials are supplied ready for use; stir thoroughly prior to application.

Attention, risk of injuries! Container may be under pressure. Lid may come off unexpectedly. Prior to opening reduce pressure, e.g. by piercing the lid.

APPLICATION

The method of application has a major effect on achieving uniform thickness and appearance. Spray application will give the best results. The indicated dry film thickness is easily achieved by airless spray. Adding solvents reduces the sag resistance and the dry film thickness. In case of application by roller or brush, additional applications may become necessary to achieve the required coating thickness, depending on type of construction, site conditions, colour shade etc. Prior to major coating operations a test application on site may be useful to ensure the selected application method will provide the requested results.

By brush and roller
SikaCor® Zinc PUR is not suitable for roller application.
 

Conventional high pressure spraying:

  • Nozzle size 1.5 - 2.5 mm
  • Pressure 3 - 5 bar
 

Airless-spraying:

  • Pressure min. 180 bar
  • Nozzle size 0.38 - 0.53 mm (0.015 - 0.021 inch)
  • Spraying angle 40° - 80°

CLEANING OF EQUIPMENT

For SikaCor® Zinc PUR
and for SikaCor® PUR-1


Sika® Thinner S

For SikaCor® EG-4
and for SikaCor® EG-5


Sika® Thinner EG

Documents