Curable silicone semi-interpenetrating polymer networks and methods of making same
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United States of America Patent
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Dec 22, 1987
Issued Date -
N/A
app pub date -
Feb 6, 1984
filing date -
Apr 20, 1982
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Expired
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Abstract
Melt processable pseudointerpenetrating polymer networks (pseudo- or semi-IPNs) of silicones in thermoplastic matrices and methods of producing same are provided by vulcanizing the silicones within the matrices. The silicone component of the network is preferably the reaction product of a polymeric hydride group - containing silicone and a polymer containing at least one unsaturated group, preferably a vinyl group. The polymer containing unsaturated groups may be a silicone polymer also, or may be a non-silicone polymer such as a styrene, butadiene or urethane polymer or copolymer. Depending on certain parameters chain-extended (thermoplastic) or cross-linked (thermosetting) compositions are produced.
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