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Sika Joint Sealants Primer:    

     

Sika Primer-3N

 

Primer for Sika joint sealants and elastic adhesives

 

Product Description

 

Sika Primer-3N is a one-part, solvent containing primer for Sika joint sealants  and elastic adhesives.

 

Uses

 

As a primer under Sikaflex, Sikaflex AT joint sealants and SikaBond, SikaBond  AT elastic adhesives on porous substrates such as concrete.

 

Characteristics / Advantages

 

Easy to apply

Provides better and longer bonding

Can be used on surfaces up to 8% moisture content

Can be used both on porous (concrete, cementitious surfaces etc.) and nonporous

substrates (metal, etc.)

 

Product Data

 

Form

 

Appearance / Colour: Liquid, transparent

 

Packaging: 1 litre metal pail

 

Storage

 

Storage Conditions / Shelf-life

 

9 months from date of production if stored properly in undamaged original sealed   containers in dry conditions and protected from direct sunlight at temperatures   between +10oC and +25oC.

 

Technical Data

 

Chemical base: Transparent solvent based and reactive epoxy resin mix

 

Density: ~ 0.98 kg/l (ISO 2811-1)

 

Consumption  

  • On porous substrates: ~220 - 300 m with 1 liter (1 liter per ~5 m2) 
  • Non-porous substrates (metals): ~400 m with 1 liter (1 liter per ~8 m2) 

Substrate Quality Substrate should be clean, homogeneous and free from oil, grease and dust.

 

Substrate Preparation

 

Clean and dry, homogeneous, even, free from oils and grease, dust and loose or   friable particles. Paint, cement laitance and any other contaminants must be   removed using suitable mechanical techniques such as wire brush or grinding.

Substrate should be dry, slightly visible damp is acceptable - there should be no   standing water. It is advisable to mask off adjacent areas to prevent possible   discolouration.

 

Application Conditions / Limitations  

  • Ambient Temperature,  min.+50oC, max. +35oC  
  • Subsrate Temperature,  min.+50oC, max. +35oC  

Substrate Moisture Content

 

Allowable maximum substrate moisture content is 8%

 

Application Method / Tools

 

Apply Sika Primer 3N to joint surfaces by brush. Protect the sides with masking   tape if necessary.

 

Cleaning of Tools

 

Clean all tools and application equipment with Sika Colma Cleaner immediately   after use. Hardened / cured material can only be removed mechanically.

 

Notes on Application / Limitations

 

Allow a flash-off time of at least 30 minutes before sealant application (maximum 8 hours).

Do not use on bituminous substrates or construction materials that may be   negatively effected by solvent based products.

For using Sika Primer 3N under Sika joint sealants and elastic adhesives on   different substrates, please see the "Primer Table"

 

Value Base

 

All technical data stated in this Product Data Sheet are based on laboratory tests.   Actual measured data may vary due to circumstances beyond our control.

 

Local Restrictions

 

Please note that as a result of specific local regulations the performance of this   product may vary from country to country. Please consult the local Product Data  Sheet for the exact description of the application fields.

 

Health and Safety Information

 

For information and advice on the safe handling, storage and disposal of chemical   products, users shall refer to the most recent Material Safety Data Sheet   containing physical, ecological, toxicological and other safety-related data. 

 

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