EXTRUDABLE SHAPE MEMORY POLYMER
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United States of America Patent
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Issued Date -
Jul 21, 2011
app pub date -
Sep 14, 2009
filing date -
Sep 17, 2008
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Abandoned
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Abstract
The presently disclosed formula utilizes a composition of a rigid, semi-crystalline polymer, such as polybutylene terephthalate, and an amorphous polymer, such as poly(vinyl acetate), to create a thermoplastic shape memory polymer that can be processed through methods such as extrusion and injection molding, which require high heat. The polybutylene terephthalate acts as a cross-linker for the poly(vinyl acetate), therefore the thermoplastic shape memory polymer that is created has a much higher melting point and greater heat stability than other shape memory polymers.
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