Silane coupling agent.

Z-6172 silane, a vinyl-tris-(2-methoxyethoxy) silane coupling agent, is said to provide 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, according to the company. Applications include treatment of aluminum trihydrate (ATH), magnesium dihydrate (MDH) and clays used in wire and cable. The Z-6172 silane is said to provide a lower volatility than other vinyl silanes for easier handling when compounding in a twin-screw extruder. The Z-6172 silane is reactive in both free radical and hydrolization chemistry, and has an organic reactive vinyl group and inorganic reactive methoxyethoxysilyl groups. The alkoxysilyl groups react to form siloxane bonds both to inorganic 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. (Dow Coming)

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