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With the advent of the new AIM regulations under the Clean Air Act, how can I formulate a low-VOC polyamide-based epoxy coating without losing performance or adding cost to my system?


David Dubowik David Dubowik
Principal Applications Chemist

AIM regulations set specific VOC content limits for a broad range of architectural and industrial maintenance coatings. To reduce VOCs of polyamide-based epoxy coatings, formulators typically rely on lower viscosity curing agents, diluents, and plasticizers. However, each approach has its disadvantages.

Coatings based on lower viscosity curing agents and additives suffer from slower dry times relative to higher viscosity polyamides. They also have a higher tendency to form amine blush and can be less flexible. Plasticized polyamide adducts provide limited VOC reduction at increased cost.

Air Products' new Ancamide® 805 curing agent offers a cost-effective alternative to other low-VOC options while maintaining performance.

This novel technology is a plasticizer-free, 100% reactive polyamide that offers low viscosity, high equivalent weight, and fast dry speed along with good flexibility and film appearance. This allows you to formulate lower VOC epoxy coatings without a loss of performance or an increase in cost. In addition, Ancamide 805 curing agents' lower viscosity allows you to increase filler loading and reduce system cost while maintaining VOC compliance and performance.
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