Poly(3-hydroxybutanoic acid) film
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United States of America Patent
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Jun 29, 1999
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app pub date -
Dec 18, 1997
filing date -
Dec 18, 1996
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Abstract
Poly(3-hydroxybutanoic acid) having a number average molecular weight of not less than 500,000 is oriented at a draw ratio of 2-fold or more to reproducibly obtain a film made of poly(3-hydroxybutanoic acid) having biodegradability and biocompatibility as well as sufficient strength and flexibility (for example, tensile strength of not less than 30 MPa and elongation to break of not less than 15%).
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