penetrol and 2k

Discussion in 'Materials' started by whitepointer23, Sep 12, 2014.

  1. whitepointer23

    whitepointer23 Previous Member

    Hello. I would like to know if I can add penetrol to 2k enamel and if I can will it help paint adhesion like it does with single pack.
     
  2. Mr Efficiency
    Joined: Oct 2010
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    Mr Efficiency Senior Member

    I would say definitely not, it is a drying oil, 2-pack hardens by chemical reaction. You will ruin the paint, imo.
     
  3. PAR
    Joined: Nov 2003
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    PAR Yacht Designer/Builder

    Penetrol is a lot of things, a wetting agent, that has driers in it, plus some other stuff. Which 2 pack are you looking to work with as these are typically acrylic urethane's, WR-LPU's or LPU's, not an alkyd (enamel). The "usual suspects" of 2 packs are moisture cures, though a chemical reaction is required to get the molecule to comply.
     
  4. Mr Efficiency
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    Mr Efficiency Senior Member

    What you can get away with adding to paint can surprise, best I have seen was a fella who tinted some white alkyd enamel with black molasses to touch up rust spots on a grey-coloured car he was selling. Worked a treat !
     
  5. PAR
    Joined: Nov 2003
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    PAR Yacht Designer/Builder

    As a rule, if you can keep it in suspension and it doesn't emulsify or significantly dilute the resin or react with the vehicle, you'll usually get away with it, though bond and performance may suffer. I've used all sorts of things in paint over the years, though most are usually some sort of particulate or die to change the color or possibly a thixotropic agent to bulk it up, like silica in primer for example.
     
  6. whitepointer23

    whitepointer23 Previous Member

    Thanks for the replies. I have not purchased the top coat yet but the primer is sigmacoat 280 industrial. 2k.
     
  7. Mr Efficiency
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    Mr Efficiency Senior Member

  8. SukiSolo
    Joined: Dec 2012
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    SukiSolo Senior Member

    I have had good results from PPG paint systems in 2k, although I have not used this specific product. If the steel is really clean, I'm sure this stuff will give very good protection. Probably best if done in two coats to ensure any pinholes from drying the first coat are sealed by the second. Then any further finish coats.

    If you need a really flat good surface the PPG Kobe 2k primer filler sands beautifully and allows very good top coats. Funny how their 2k topcoats have such a distinctive smell compared to almost all others I have used. Some finishes I have put on are still going strong after 20 odd years, although of course they were the 'pre water borne' (solvent) type....
     
  9. whitepointer23

    whitepointer23 Previous Member

  10. whitepointer23

    whitepointer23 Previous Member

    Thanks suki.
     

  11. motorbike
    Joined: Mar 2011
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    motorbike Senior Member

    In response to your original question, the short answer is no. Two part paints react chemically and need an accurate ratio of base to hardener to work properly, the chemists are pretty smart guys and if they thought that a third party product, designed for single pack oil based paints that comprises mostly of naptha, would improve flow, gloss, pot time etc then they would recommend it.

    They have specific thinners designed to do just that with specific advice for brush, roller or spray application. If you having issues the make you think you require penetrol, call the tech help. Usually it will be ambient air temperature, humidity or thinners related.

    The general rule of thumb is don't put stuff into paint that isn't part of its original formula. Penetrol does appear to work, much like snake oil, but no better than paint properly prepared according to the manufacturers technical directions.
     
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