The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 2010
Filed:
Nov. 10, 2005
Charles K. Webb, Clemson, SC (US);
Naren R. Vyavahare, Easley, SC (US);
Charles K. Webb, Clemson, SC (US);
Naren R. Vyavahare, Easley, SC (US);
Abstract
A degradable hydrogel and a method of making a degradable hydrogel is disclosed herein. The method comprises obtaining a hydrophilic polymer having at least two hydroxyl groups, reacting the hydrophilic polymer with a di-functional monomer comprised of an acid halide group and an alkyl halide group to form an intermediate having an ester bond and a terminal alkyl halide group, reacting the terminal alkyl halide group of the intermediate with a metallic salt of a vinyl acid monomer to form a macromonomer comprised of an ester, an alkyl group spacer, and a terminal vinyl group, and polymerizing the macromonomer to form a degradable hydrogel. A method is also disclosed for varying the degradation rate of the hydrogel as a function of the chemical composition of the alkyl group spacer in the terminal linkage of the macromonomer.