Drug – bio-affecting and body treating compositions – Identification or warning feature – Taste or smell or chemical irritation to the eye – nose – or...
Patent
1975-01-28
1978-06-06
Jiles, Henry R.
Drug, bio-affecting and body treating compositions
Identification or warning feature
Taste or smell or chemical irritation to the eye, nose, or...
424 20, 128260, A61K 922, A61K 956, A61M 3700
Patent
active
040937097
ABSTRACT:
The invention concerns orthoester and orthocarbonate polymers having a repeating mer comprising a hydrocarbon radical and a symmetrical dioxycarbon unit of the general formula: ##STR1## WHEREIN R.sub.1 is a multivalent hydrocarbon radical, R.sub.2 and R.sub.3 are hydrocarbon radicals with at least one of R.sub.2 or R.sub.3 bonded to the dioxycarbon through an oxygen linkage, and which polymers are synthesized by reacting a polyol with an orthoester or orthocarbonate. The polymers are useful for making articles of manufacture, including devices and coatings for delivering beneficial agents.
REFERENCES:
patent: 3887699 (1975-06-01), Yolles
patent: 3960150 (1977-06-01), Hussain
patent: 4001388 (1977-01-01), Shell
patent: 4014987 (1977-03-01), Heller
Choi Nam Sok
Heller Jorge
ALZA Corporation
Ciotti Thomas E.
Jiles Henry R.
Mandell Edward L.
Owens Cary
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