Back to results
US 7,745,509 B2Granted
Polymer compositions with bioactive agent, medical articles, and methods
Assignee3M Innovative Properties Company
InventorsScott A. Burton, Patrick D. Hyde, Prabhakara S. Rao, Caroline M. Ylitalo
Life of this patent
Estimating the term…
Abstract
A polymer composition that includes a hydrophilic polymer, an optional secondary organic polymer, and a bioactive agent distributed therein, wherein the bioactive agent is selected from the group consisting of a silver compound, a copper compound, a zinc compound, and combinations thereof.
Claims23
A polymer composition comprising:
- a continuous hydrophobic phase comprising a mixture comprising:
- a hydrophobic liquid comprising mineral oil;
- and
- a hydrophobic thermoplastic elastomeric polymer;
- absorbent hydrophilic microparticles dispersed within the hydrophobic liquid, wherein the hydrophilic microparticles comprise a crosslinked carboxylic acid-containing organic polymer;
- and
- a bioactive agent having a particle size less than one micron dispersed in the hydrophilic microparticles, wherein the bioactive agent is selected from the group consisting of a metal oxide of silver, a metal oxide of copper, a metal oxide of zinc, and combinations thereof;
- wherein the polymer composition is nonadherent and contains less than 1 wt % water based on the total weight of the composition.
5 more elements
A polymer composition comprising:
- a continuous hydrophobic phase comprising a mixture comprising:
- mineral oil;
- and
- a hydrophobic thermoplastic elastomeric polymer selected from the group consisting of styrene-isoprene-styrene (SIS), styrene-butadiene-styrene (SBS), styrene-ethylene-propylene-styrene (SEPS), styrene-ethylene-butylene-styrene (SEBS), and combinations thereof;
- absorbent hydrophilic microparticles dispersed within the mineral oil, wherein the hydrophilic microparticles comprise a crosslinked carboxylic acid-containing organic polymer;
- and
- a bioactive agent having a particle size less than one micron dispersed in the hydrophilic microparticles, wherein the bioactive agent is selected from the group consisting of a metal oxide of silver, a metal oxide of copper, a metal oxide of zinc, and combinations thereof;
- wherein the polymer composition is nonadherent and contains less than 1 wt % water based on the total weight of the composition.
5 more elements
A polymer composition comprising:
- a continuous hydrophobic phase comprising a mixture comprising:
- mineral oil;
- and
- a hydrophobic thermoplastic elastomeric polymer selected from the group consisting of styrene-isoprene-styrene (SIS), styrene-butadiene-styrene (SBS), styrene-ethylene-propylene-styrene (SEPS), styrene-ethylene-butylene-styrene (SEBS), and combinations thereof;
- absorbent hydrophilic microparticles dispersed within the mineral oil, wherein the hydrophilic microparticles comprise a crosslinked a copolymer of sodium acrylate and acrylic acid;
- and
- silver oxide having a particle size less than one micron dispersed in the hydrophilic microparticles;
- wherein the polymer composition is nonadherent and contains less than 1 wt % water based on the total weight of the composition.
5 more elements
Dependencies are inferred from the claim text.