| 摘要 |
This invention concerns polymeric orthoesters having a repeating mer comprising a hydrocarbon radical and an orthoester functionality of the general formula: <IMAGE> wherein R1 is a monovalent radical, R2 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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