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US 8,349,987 B2Granted
Adhesive formulations
AssigneeCovidien LP
InventorsMbiya Kapiamba, Jack Kennedy, Roland Ostapoff
Life of this patent
Estimating the term…
Abstract
The disclosure relates to biocompatible components useful for forming compositions for use as medical/surgical synthetic adhesives and sealants. Biocompatible components of the present disclosure may include a polymeric polyol core, which may be treated with a nitroaryl compound to form a nitro ester. The resulting nitro ester groups may be reduced to form amino groups which, in turn, may be treated to form isocyanate groups. The resulting isocyanate may then be reacted with a second component to form adhesive and/or sealant compositions.
Claims10
A biocompatible component of the formula:
- wherein R is selected from the group consisting of alkyl groups, cycloalkyl groups, alkenyl groups, alkynyl groups, alkylene groups, cycloalkylene groups, alkenylene groups, alkynylene groups, aromatic groups, heteroaromatic groups, heterocyclic groups, and combinations thereof;
- n can be from 1 to 5;
- R1 can be the same or different at each location and is selected from the group consisting of OCH2, SCH2, O-alkyl, S-alkyl, O-aryl, and combinations thereof;
- and
- PAO is a polyalkylene oxide having a molecular weight of from about 200 to about 4000.
2 more elements
Dependencies are inferred from the claim text.