Modified polyisobutylene-based polymers, methods of making, and medical devices
AssigneeMedtronic, Inc.
InventorsKimberly A. Chaffin, Xiangji Chen, Matthew Jolly, SuPing Lyu, Peter L. Thor, Darrel F. Untereker, Zhaoxu Wang
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Abstract
A modified polyisobutylene-based polymer, method of making, and a medical device that includes such polymer, wherein the modified polyisobutylene-based polymer includes urethane, urea, or urethane-urea groups, hard segments, and soft segments, wherein the soft segments comprise phenoxy-containing polyisobutylene residues, and the hard segments include diisocyanate residues and optionally chain extender residues.
Claims20
A modified polyisobutylene-based polymer comprising urethane, urea, or urethane-urea groups, hard segments, and soft segments, wherein the soft segments comprise phenoxy-containing polyisobutylene residues, and the hard segments comprise diisocyanate residues and optionally chain extender residues;
- wherein the phenoxy-containing polyisobutylene residues are derived from a phenoxy-containing polyisobutylene diol, diamine, or combination thereof.
A modified polyisobutylene-based polymer comprising urethane, urea, or urethane-urea groups, hard segments, and soft segments, wherein the soft segments comprise phenoxy-containing polyisobutylene residues, and the hard segments comprise diisocyanate residues and chain extender residues.
A modified polyisobutylene-based polymer comprising urethane, urea, or urethane-urea groups, hard segments, and soft segments, wherein the soft segments comprise phenoxy-containing polyisobutylene residues, and the hard segments comprise diisocyanate residues and optionally chain extender residues;
- wherein the weight ratio of soft segments to hard segments is within a range of 90:10 to 10:90.
A medical device comprising a polymeric region comprising a modified polyisobutylene-based polymer comprising urethane, urea, or urethane-urea groups, hard segments, and soft segments, wherein the soft segments comprise phenoxy-containing polyisobutylene residues, and the hard segments comprise diisocyanate residues and optionally chain extender residues.
A modified polyisobutylene-based polymer comprising urethane, urea, or urethane-urea groups, hard segments, and soft segments, wherein the soft segments comprise phenoxy-containing polyisobutylene residues, and the hard segments comprise diisocyanate residues and optionally chain extender residues;
- wherein the phenoxy-containing polyisobutylene residues include oxygen atoms that are not part of a urethane or urethane-urea group, if present.
Dependencies are inferred from the claim text.