Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2000-09-29
2001-12-11
Acquah, Samuel A. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S326300, C526S245000, C526S246000, C526S250000, C526S255000
Reexamination Certificate
active
06329470
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to biodegradable polymers.
DESCRIPTION OF RELATED ART
Biodegradable polyester polymers based on simple biological acid compounds, such as glycolic or lactic acid are among an important class of biodegradable materials used temporarily as sutures, tissue scaffolding, wound healing and drug delivery devices/matrices. The polyesters traditionally of greatest interest are derived from lactide and glycolide. These compounds, however, lack many desirable properties like specific controlled cellular or tissue adhesion properties, biocompatibility, and drug delivery kinetics. Therefore, a need exists in the field of biodegradable polymers for novel compounds that will display these and other desired surface properties.
SUMMARY OF THE INVENTION
The present invention provides novel surface modified biodegradable polyesters having fluorocarbon chains at the terminal end of the polyesters. The compounds of the present invention are obtained by the addition of fluorocarbon chains at the surface of the polyester. Any commonly used polyester material can be used in the present invention; however, polyglycolic or polylactic acids or co-polymers thereof are preferred.
REFERENCES:
patent: 5236563 (1993-08-01), Loh
Gardella, Jr. Joseph A.
Hicks, Jr. Wesley
Koloski Timothy
Lee Won-Ki
Losito Ilario
Acquah Samuel A.
Asinovsky Olga
Hodgson & Russ LLP
The Research Foundation of State University of New York
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