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. 12, 2005
Filed:
Jan. 23, 2003
John Kemnitzer, San Diego, CA (US);
George Brode, Bridgewater, NJ (US);
Robert Minasyan, San Diego, CA (US);
Timothy Malaney, Chula Vista, CA (US);
John Kemnitzer, San Diego, CA (US);
George Brode, Bridgewater, NJ (US);
Robert Minasyan, San Diego, CA (US);
Timothy Malaney, Chula Vista, CA (US);
Integra LifeSciences Corporation, Plainsboro, NJ (US);
Abstract
A process for selectively modifying pendent functionalities of a polymer containing the pendent functionalities and hydrolytically unstable backbone functionalities is provided. The process includes: (a) providing the polymer in a solvent system (preferably an ether-containing solvent system) adapted to maintain the polymer in a dissolved or partially dissolved state, wherein the pendent functionalities of the polymer are more accessible than the hydrolytically unstable backbone functionalities; and (b) adding at least one additive to the solvent system to selectively modify at least one of the pendent functionalities. The process is especially well suited for specifically acid hydrolyzing pendent esters of PDTE.