Compositions comprising arylene substituted poly(orthoesters) co

Details Compositions comprising arylene substituted poly(orthoesters) co Compositions comprising arylene substituted poly(orthoesters) co

1978-12-26

1980-01-29

Waddell, Frederick E.

Drug, bio-affecting and body treating compositions

Identification or warning feature

Taste or smell or chemical irritation to the eye, nose, or...

424 78, A61K 922, A61K 3174

Patent

active

041861850

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.

REFERENCES:
patent: 4052505 (1977-10-01), Higuchi et al.
patent: 4115544 (1978-09-01), Shell

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