Polyamino acid ester copolymers
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United States of America Patent
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Jun 8, 1999
Grant Date -
N/A
app pub date -
Dec 6, 1996
filing date -
Dec 7, 1995
priority date (Note) -
Expired
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Abstract
Copolymers derived from polyamino acids with at least 75% of the units present selected from the group consisting of structural units having the general formulas (I) and (II) in which the structural elements A are identical or different trifunctional hydrocarbon radicals with 2 or 3 C atoms, wherein the copolymer contains at least three units of formula (I).
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