Composition and method for impact modification of thermoplastics
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United States of America Patent
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Jul 15, 1997
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N/A
app pub date -
May 5, 1995
filing date -
May 5, 1995
priority date (Note) -
Expired
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Abstract
A method and composition for improving the impact resistance of thermoplastics is disclosed. An impact resistant thermoplastic is formed by forming a silicone containing thermosetting component, compounding it with a thermoplastic to form a silicone-thermoplastic mixture, disposing a catalyst on the mixture, and activating the catalyst while compounding the mixture with a thermoplastic. The silicone containing thermosetting component includes a first silicone compound containing hydride groups and a second silicone compound containing unsaturated groups. Activating the catalyst, preferably a platinum complex, causes the thermosetting component to cure, creating a silicone-thermoplastic semi-interpenetrating polymer network having higher impact resistance than the unmodified thermoplastic.
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