Heat resistance and corrosion protection have been key drivers for the development of methyl/phenyl silicone resins, but current products are limited for high solids, low VOC formulation and longer life cycles. Oven curing silicone binders either use HAP’s solvents or provide limited durability and ambient curing resins require complex combinations of catalyst.
This paper presents a new HAP’s free silicone resin and a novel high solids NISO hardener as solutions for the high heat resistant coatings market where ambient curing and excellent corrosion protection are required. This new hardener is shown to be heat stable and offer improved weatherability and anti-corrosive properties when used together with the latest HAP’s free methyl/phenyl silicone binder and other high solids silicone resins, compared against traditional oven curing systems. The combined performance properties along with the ease of handling and low VOC’s offer the possibility to fulfill the evolving global regulations regarding environment.