Polyamines and method for preparation thereof
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United States of America Patent
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Dec 12, 1995
Issued Date -
N/A
app pub date -
Jan 15, 1993
filing date -
Jul 26, 1990
priority date (Note) -
Expired
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Abstract
Cross-linked controlled density polyamines which are water-insoluble and swell at pH values up to about 8 are shown. These polyamines are useful in site-specific drug delivery systems.
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