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:
Sep. 18, 2012
Filed:
Jun. 09, 2009
Nadya Belcheva, Hamden, CT (US);
Trang Huynh, Branford, CT (US);
Darlene Nebinger, Oxford, CT (US);
Ronald Rutka, Colchester, CT (US);
Nadya Belcheva, Hamden, CT (US);
Trang Huynh, Branford, CT (US);
Darlene Nebinger, Oxford, CT (US);
Ronald Rutka, Colchester, CT (US);
Tyco Healthcare Group LP, Mansfield, MA (US);
Abstract
The present disclosure provides methods for purifying p-dioxanone. In embodiments, crude p-dioxanone may be contacted with at least one isocyanate-functionalized scavenger. The at least one isocyanate-functionalized scavenger may react with hydroxyl compounds present with the crude p-dioxanone to form reaction products, in embodiments polyurethanes and/or polyureas, which may then be removed. The p-dioxanone thus obtained is of greater purity than the starting crude p-dioxanone.