Biodegradable poly(hydroxyalkyl)amino dicarboxylic acid) derivatives, a process for their preparation, and the use thereof for depot formulations with controlled deivery of active ingredient
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United States of America Patent
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Aug 20, 1991
Issued Date -
N/A
app pub date -
Sep 5, 1989
filing date -
Jan 3, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to biodegradable poly((hydroxyalkyl)amino dicarboxylic acid) derivatives of the formula I ##STR1## in which n, m, x, y, z, R and R' have the indicated meanings, and to a process for their preparation and to the use thereof for depot formulations with controlled delivery of active ingredient.
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