Munich-based chemical company Wacker is expanding its product range of functional silanes with a new arylalkoxysilane monomer. Marketed as Geniosil XL 70, this additive is designed as a water scavenger for silane-curing adhesive and sealant formulations. It is particularly suitable for products that must avoid unpleasant odors when applied. Due to its high flash point, the additive is also easier to store and handle. The new water scavenger is compatible with all Geniosil silane-modified polymers and organofunctional silanes.Geniosil XL 70 is a new water scavenger developed by Munich-based Wacker for silane-curing adhesive and sealant formulations. It is particularly suitable for low-odor, liquid waterproofing systems.
Geniosil XL 70 is a clear, colorless, low-viscosity silane which belongs to the arylalkoxysilane group. Unlike conventional water scavengers for silane-curing adhesives and sealants, the liquid has only a very faint odor. Consequently, the water scavenger is ideal for adhesives and sealants used over large areas. Compounders can formulate products such as parquet adhesives and liquid water-proofing systems that do not create odors with the additive and are in line with increasingly stringent occupational health and safety regulations.
Additionally, Geniosil XL 70 has a much higher flash point than conventional water scavengers, which is 96°C as per ISO 3679. This is an advantage for processors. For example, less effort is required to store and process the additive.
As silane-curing adhesives and sealants react with water, water scavengers are an essential component in such products. They protect the polymers from moisture inherent to a formulation via fillers and other ingredients. Moreover, water scavengers ensure that the product can be used without restriction throughout its given minimum shelf life. The required dosage of Geniosil XL 70 depends on the formulation components and the desired shelf life of the end product.
