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Primer systems and olefins

Primer systems and olefins

Primer systems and olefins

(OP)
Currently using a silane-based primer system (with alkoxy and amine reactivity).  In general it works great in bonding polyester materials to polyolefins (like EVA, EMA, EEA, etc.).  Though strangely a good bond is not obtained when using any EAA resins.  It is understandable why LDPE would not work very well, but EAA is supposed to be a very chemically functional resin class - yet it can be peeled away from the polyester after being extruded upon the primer.    Quite confounding.     Any ideas?  (just bad luck with the chemical/primer matchup, or something strange about EAA's perhaps?).   Thanks for any insights.  :)

RE: Primer systems and olefins

Yes, this is confounding.  It should work.  Maybe the EAA is neutralized, or maybe it has a contaminant coating.  

Regards,

Tom Quinn
Adherent Laboratories
www.adherentlabs.com

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