Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1996-02-29
1998-05-26
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528271, 528354, 528361, 528398, 424 7801, 424426, C08G 6306
Patent
active
057566526
ABSTRACT:
Biodegradable poly(ester-anhydrides) designed to display two-stage degradation profiles are described. The presence of the anhydride linkages allows a relatively rapid decrease in molecular weight, the extent of which is governed by the concentration of the anhydride linkages along the chain, followed by possible dissolution and a slower degradation of the remaining oligomers, the rate of which is governed by the composition of the polyester prepolymers. Methods for the preparation of the poly(ester-anhydrides) and their polyester precursors are also described.
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Deng Z. David
Glancy Todd P.
Peterson Dale R.
Storey Robson F.
Acquah Samuel A.
DePuy Orthopaedics, Inc.
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