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ASCOTRUST® Rust-converting additives
ASCOTRUST® Rust-converting additives
ASCOTRUST® X4
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Product Description
FUNCTION
Liquid additive for waterborne coatings. Reacts with metal cations to form stable organic complexes chemically bonded on the metal substrates, providing a stable and effective chemical passivation.
APPLICATION
ASCOTRUST-X4 is added to waterborne coatings directly applied on rusted or poor-prepared ferrous substrates. It ensures an effective blocking effect on residual rust, and avoids its migration through the fresh paint film.
Its passivation properties on rust allow to maintain good anticorrosion performances of the coatings, despite the adverse substrate conditions.
It doesn’t compromise the coating anticorrosion
performance on non-rusted substrates.
ASCOTRUST-X4 is designed for any kind of waterborne coatings, pigmented or not, based on various binder technologies : acrylic, alkyd, epoxy, PU...
It is recommended to use an organic-type anticorrosion agent when ASCOTRUST-X4 is added to a metal paint formulation.
FEATURES
• Ready-to-use and easy to incorporate liquid
• VOC-free
• Compatible with most waterbased binders
• Eco-friendly* additive
• Synergic action with antiflash-rust additives
• Doesn’t change color of coatings
INCORPORATION / DOSAGE
ASCOTRUST-X4 is preferably added at the last manufacturing step (post-addition).
In 2K PU systems: should be added into the resin part.
In 2K Epoxy systems : ASCOTRUST-X4 should be added to the hardener (amine part).
Indicative use dosages (% of total coating weight) :
• 0,5 to 3% depending on the coating formulation.
The dosage can reach 5% into primers or one coat systems, applied on highly reactive rusted substrates, at low DFT (<40-50 µm).
It is advisable to determine the optimum amount by a laboratory test.
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