Polymer blends containing absorbable polyoxaesters
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United States of America Patent
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Mar 4, 1997
Issued Date -
N/A
app pub date -
Mar 5, 1996
filing date -
Mar 6, 1995
priority date (Note) -
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Abstract
The present invention describes a new aliphatic polyoxaesters and blends thereof that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The invention also contemplates a process for producing these polyesters. The aliphatic polyoxaesters of the present invention have a first divalent repeating unit of formula I: [O--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1l)(R.sub.2)--C(O)--] I and a second repeating unit selected from the group of formulas consisting of: [--O--R.sub.4 --].sub.A, II [--O--R.sub.5 --C(O)--].sub.B, and III ([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XI and combinations thereof. These aliphatic polyoxaesters may be blended with other polymers which are preferably biocompatable.
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