New technology expands role of silicones


New materials, such as foams, are expanding the role of silicones in medical devices, while processing technology--particularly in micro sizes-- is also advancing.

Bluestar Silicones (East Brunswick, NJ) is launching a new technology, SILBIONE RT Foams, which have low density (from 0.18 to 0.25) and open cells and meet ISO and USP standards on cytotoxicity, skin irritation, skin sensitization, and biocompatibility.

Two reactions start simultaneously when parts A and B are combined:

•*Silicone elastomers cross link, forming a polyaddition reaction with no by-products) and
•*Hydrogen gas is released to promote cells formation.
Bluestar Silicones' scientists developed this patent-pending technology and can manage the relationship between curing and foaming kinetics, a key parameter in controlling density and open versus closed cells....
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