Compositions comprising arylene substituted poly(orthoesters) containing useful agents
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United States of America Patent
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Jan 29, 1980
Issued Date -
N/A
app pub date -
Dec 26, 1978
filing date -
Apr 8, 1976
priority date (Note) -
Expired
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Abstract
This invention concerns polymeric orthoesters having a repeating mer comprising a hydrocarbon radical and an orthoester functionality of the general formula: ##STR1## wherein R.sub.1 is a monovalent radical, R.sub.2 is a hydrocarbon radical, a is 2 to 3, and n is at least 10. The polymers are useful for making articles of manufacture and as coatings for beneficial agents.
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