Polymeric orthoesters

Details Polymeric orthoesters Polymeric orthoesters

1977-09-28

1978-10-10

Briggs, Sr., Wilbert J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

528403, 528417, 528425, 2603407, 2603409R, 424 78, 71 64F, 526266, C08G 6500

Patent

active

041195795

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: 2636884 (1953-04-01), Tenenbaum et al.
patent: 3328427 (1967-06-01), Melaas
patent: 3673216 (1972-06-01), Schroeter
patent: 3696123 (1972-10-01), Schroeter et al.

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