PEG-polyacetal diblock and triblock copolymers and pharmaceutical compositions
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United States of America Patent
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N/A
Issued Date -
Oct 19, 2006
app pub date -
Mar 28, 2006
filing date -
Mar 31, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
This invention relates to block copolymer delivery vehicles comprising a polyethyleneglycol-polyacetal, and to controlled release pharmaceutical compositions comprising the delivery vehicle and an active agent. The block copolymers of the invention may be thermogel block copolymers. The pharmaceutical compositions may be in the form of a topical, syringable, or injectable formulation for local controlled delivery of the active agent.
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