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OwnerJeffrey A. Trogolo, Frank C. Rossitto +1inventors
InventorsJeffrey A. Trogolo, Frank C. Rossitto, Edward K. Welch II
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The invention relates to a high aspect ratio microcapsule comprising an inorganic antimicrobial agent coated with a hydrophilic polymer. The hydrophilic polymer is able to absorb sufficient water as to enable the action of the encapsulated antimicrobial agent. These high aspect ratio microcapsules are useful to impart antimicrobial activity and can be used in polymer compositions, sprays and coatings. A method of preparing the high aspect ratio microcapsule by melt compounding and fabrication of the antimicrobial agent with the hydrophilic polymer is provided. Polymer compositions comprising the high aspect ratio microcapsules and a matrix polymer are also provided. Another embodiment of the invention is an article prepared from the polymer compositions comprising the high aspect ratio microcapsules and a matrix polymer.
A high aspect ratio microcapsule comprising an antimicrobial agent coated with a hydrophilic polymer, said microcapsule having an aspect ratio of greater than about 2.
A method for manufacture of a high aspect ratio microcapsule comprising:
A method of controlling the rate of release of an antimicrobial agent from a polymer matrix comprising forming a high aspect ratio microcapsule comprising an antimicrobial agent encapsulated within a hydrophilic polymer of a given hydrophilic property which allows for the release of the antimicrobial agent at a given rate and incorporating the high aspect ratio antimicrobial microcapsule into another polymer which is either non-hydrophilic or which has a different hydrophilic property.
A method of improving the antimicrobial properties of a non-hydrophilic polymer using a given amount of an antimicrobial agent comprising forming a high aspect ratio microcapsule comprising the antimicrobial agent encapsulated within a hydrophilic polymer and incorporating the antimicrobial microcapsule into the non-hydrophilic polymer to form an antimicrobial composition having improved antimicrobial performance as compared to a similar composition wherein the antimicrobial agent is directly incorporated into the non-hydrophilic polymer.
Dependencies are inferred from the claim text.