Polymerization process using mono-and di-functional initiators to prepare fast crystallizing polylactone copolymers
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United States of America Patent
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Dec 14, 2004
Grant Date -
Jan 8, 2004
app pub date -
Jun 28, 2002
filing date -
Jun 28, 2002
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Abstract
The present invention is directed to a process for making an absorbable polylactone copolymer prepared in part from about 2 to about 80 mole percent glycolide, which process utilizes a combination of a monofunctional polymerization initiator and a di-functional polymerization initiator, to achieve rates of crystallization of the copolymer of at least about 2 times faster than the rate of crystallization of a copolymer made by a similar process utilizing either the mono-functional or the di-functional polymerization initiator alone. Absorbable polylactone copolymers prepared by such processes and medical devices containing such copolymers are also disclosed.
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