Non cross-linked block polyetherester, preparation and uses
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United States of America Patent
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Dec 9, 2003
Grant Date -
N/A
app pub date -
Dec 20, 2000
filing date -
Apr 28, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a non crosslinked block polymer. It also relates to a process for the preparation thereof and to the use thereof particularly in pharmaceutical compositions. The block polymer according to the invention contains sequences of polyethylene glycol linked to sequences of polyester and/or polycarbonate. The polyester sequences are selected in particular from polyfumarate, polymaleate and polysuccinate sequences.
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