Midland, Michigan -- Dow Corning Corp. says its 3055 resin allows coatings manufacturers to formulate low-VOC (volatile organic compound), corrosion-resistant, next-generation polysiloxane coatings with urethane, epoxy, polyester, and other systems, using amine functionality.
Silicones manufacturer Dow Corning said that unlike moisture-cured polysiloxanes, the 3055 resin does not require titanate/tin catalysts or ambient moisture to cure, and as a result, it does not contribute to volatile by-products that can cause film stress and adhesion loss.
Polysiloxane hybrid coatings formulated with 3055 resin have exhibited long-term flexibility and improved chemical, thermal, UV, corrosion and moisture resistance compared to epoxy and two-component polyurethane systems, Dow Corning claims.
The Midland, Michigan-based company added that compared to 2K PU coatings, polysiloxane coatings with 3055 resin have similar physical properties but with better corrosion resistance. Dow Corning also said there is the potential to use a two-coat polysiloxane system instead of the three-coat system needed with a 2K PU topcoat.
"What makes Dow Corning 3055 resin especially intriguing is the potential utility for performance improvement in applications outside of traditional protective coatings, such as fire-resistant and intumescent coatings, composite polymers, industrial adhesives, and high-temperature coatings," said Jim Stange, Dow Corning's North America market manager, coatings.