Wacker A. G. is expanding its product range of functional silanes with an arylalkoxysilane monomer, marketed as Geniosil XL 70.
This additive is designed as a water scavenger for silane-curing adhesive and sealant formulations, Wacker said, and is particularly suitable for products that must avoid unpleasant odors when applied.
Geniosil XL 70 has a higher flash point than conventional water scavengers, which is 96°C as per ISO 3679, allowing it to be easier to store and handle. Wacker added the new water scavenger is compatible with all Geniosil silane-modified polymers and organofunctional silanes.
Unlike other comparable products, Geniosil XL 70 has only a faint odor and is ideal for adhesives and sealants used over large areas, Wacker said. Compounders can formulate products such as parquet adhesives and liquid waterproofing systems that do not create odors with the additive and are in line with increasingly stringent occupational health and safety regulations.
As silane-curing adhesives and sealants react with water, water scavengers are an essential component in such products, Wacker said. They protect the polymers from moisture inherent to a formulation via fillers and other ingredients. Water scavengers ensure that the product can be used without restriction throughout its given minimum shelf life.