New Dow Corning® Z-6172 Silane, a Vinyl-tris-(2-methoxyethoxy) silane coupling agent, provides improved dispersion of mineral fillers in EPDM rubbers and thermoplastic resins. It increases initial and wet strengths of glass-filled polyester and other resin systems, and can optimize electrical and physical properties of mineral-filled elastomers and plastics. Applications include treatment of Aluminum Trihydrate (ATH), Magnesium Dihydrate (MDH) and clays used in wire and cable. Z-6172 Silane provides a lower volatility than other vinyl silanes for easier handling when compounding in a twin-screw extruder. Z-6172 is reactive in both free radical and hydrosilation chemistry, and has an organic reactive vinyl group and inorganic reactive methoxyethoxysilyl groups. The alkoxysilyl groups react to form siloxane bonds both to organic surfaces and materials - and also to other silane molecules - to form a crosslinked network. The vinyl group participates in the peroxide-cure chemistry of the resin or elastomer system.
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