Product Data Sheet Safety Data Sheet Show all documents

Sika® Primer-204 N

Pigmented, solvent based primer for metal substrates

Sika® Primer-204 N is a solvent-based yellow primer, which reacts with moisture and forms a thin layer. This layer acts as a link between substrates and adhesives.
Sika® Primer-204 N is specifically formulated for the treatment of bond faces prior to application of Sika’s 1-component Polyurethanes. This primer might provide excellent adhesion without previous activation step on certain substrates.  

Product Data Sheet Safety Data Sheet Show all documents

Usage

Sika® Primer-204 N is used to improve adhesion on metals like steel, stainless steel, galvanized steel, aluminum and anodized aluminum.
Sika® Primer-204 N is not suitable as an anticorrosion paint.
This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.  

Packaging

Can

250 ml
1000 ml

Product Details

Typical Product Data
Chemical base

Solvent-based Polyurethane solution

Colour (CQP001-1)

Yellow

Solid content

36 %

Application temperature

5 - 40 °C

Application method

Brush, felt or foam applicator

Consumption

                                                                           depending on substrate porosity

50 ml/m2

Flash-off time

                                                                                                               minimum

                                                                                                              maximum

30 minutes A/B

24 hours A/B

Shelf life

9 months C

CQP = Corporate Quality Procedure

A) 23 °C / 50 % r. h.

B) for specific application, temperature and flash-off time may be different

C) stored in sealed container in up-right position in a dry place at ≤ 25 °C
Technical Information

IMPORTANT NOTE

Sika® Primer-204 N is a moisture reactive system. In order to maintain product quality it is important to reseal the container with the inner plastic liner immediately after use. Once the surface pre-treatment operation is completed, the cap has to be screwed on.
Dispose of product approx. one month after opening if used frequently or after two months in case of infrequent use.
If gelling, separation or a significant increase in viscosity is noted, discard the primer immediately.
Never dilute or mix this product with any other substances.

 

Application

Application Information

METHOD OF APPLICATION

Surfaces must be clean, dry and free from grease, oil, dust and contaminants.
Adhesion on substrates might be improved by adding and/or combining pre-treatment processes such as scuffing, cleaning and activating prior the primer application.

Primer Application

Shake the Sika® Primer-204 N can very thoroughly until mixing ball rattles freely. Continue shaking for another minute and apply a thin but covering coat with a brush, felt or foam applicator.
Ideal application and surface temperature are between 15 °C and 25 °C.
Sika® Primer-204 N has to be applied once only. Care must be taken to ensure that this single application gives adequately dense coverage. Consumption and method of application depend on the specific nature of the substrates. Tightly reseal container immediately after each use.

 

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