Low-Reactivity Liquid Light Stabilizer in Transparent Modified Silane Sealants
Although powder-based light stabilizers play an important role in modified silane sealants, they can also cause the sealant to become darker or yellowish. A recently developed liquid technology can alleviate that problem.
Modified silane sealants are primarily used for joint filling, waterproofing, airflow blocking, and bonding. As the application of prefabricated buildings and curtain walls has become mature in recent years, the market size of modified silane sealants has grown rapidly.
Modified silane sealants can be classified into two types: polyether main chain with silane-terminated resin (silyl-terminated polyether, STPE), and silane-terminated polyurethane (silylated polyurethane, SPU).1 Modified silane sealants can resolve the issue of dirt in the joints, which is often the result of using silicone. These sealants are also environmentally friendly, solvent and isocyanate free, and paintable.