With the Dispercoll S line of products, Bayer MaterialScience AG introduces an assortment of silica gel dispersions that are particularly suitable for the formulation of one-compound aqueous adhesives. Adhesives formulated with these products are characterized above all by their high green strength. This enables manufacturers of various end products to continue processing immediately after bonding, resulting in a significant leap in productivity. Furthermore, the new additives impart aqueous adhesives with a longer open time and thus ensure a longer processing. Dispercoll S products are particularly advantageous in formulating aqueous adhesives with Dispercoll C polychloroprene dispersions. In particular, adhesives formulated with products with a high hydroxyl content, such as Dispercoll C 2325, exhibit a significantly greater heat resistance that was previously attainable only through the use of two-component technology. These additives also offer interesting new options for the formulation of other aqueous adhesive systems, such as those based on Dispercoll U polyurethane dispersion. The primary applications for this type of aqueous adhesives are the furniture, automotive, shoe and construction industries, where there is a strong trend toward reduced-solvent - and thus more environmentally compatible - adhesive systems.
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