Cellulose oxidation by nitrogen dioxide in a perfluorinated...

C - Chemistry – Metallurgy – 08 – B

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C08B 15/04 (2006.01)

Patent

CA 2576140

This invention relates to a process for oxidizing cellulose with a solution of nitrogen dioxide in one or more perfluorinated tertiary amine solvents. The present invention provides methods for using perfluoro-tertiary amines with nitrogen dioxide to effectively oxidize cellulose to bioabsorbable oxidized cellulose for medicinal uses such as sutures, hemostats, wound coverings, and adhesion prevention devices.

Cette invention a pour objet un procédé d~oxydation de la cellulose à l~aide d~une solution de dioxyde d~azote dans un solvant d~amine tertiaire perfluoré. Cette invention comporte des procédés combinant amines tertiaires perfluorés et dioxyde d~azote pour transformer par oxydation la cellulose en cellulose oxydée bioabsorbable à des fins médicinales, telles que sutures, procédés hémostatiques, pansements et dispositifs empêchant toute adhésion.

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