Patent application number | Description | Published |
20110233451 | HYBRID PIEZOELECTRIC COMPOSITES WITH HIGH ELECTROMECHANICAL CHARACTERISTICS - A hybrid piezoelectric composite comprises a layer of a polymer matrix comprising particles of a PZT group in a micro range of dimensions, which is sandwiched between two layers of a polymer matrix comprising particles of a dielectric material in a nano range of dimensions. The materials of both layers are polarized with electrothermal polarization. The polymer matrices of both component composites may comprise high-density polyethylene, polyvinylidene fluoride, polypropylene, or low-density polyethylene. The dielectric material of the first component nanocomposite may be selected from the group consisting of SiO | 09-29-2011 |
20110240908 | Electret composites polymer-piezoelectric with deep trapping centers on the interphase boundary - An electret composite comprising a polymer matrix material that contains particles of a piezoelectric material with deep trapping centers on the interphase boundaries between the matrix and particles of a piezoelectric material. The piezoelectric material may have a tetragonal or a rhombohedral structure, and the polymer matrix material may be selected from high-density polyethylene, polyvinylidene fluoride, and a copolymer of vinylidenechloride and tetrafluoroethylene. The composite has a potential difference>500V, lifespan>10 years, dielectric permeability≧20, specific electric resistance≧10 | 10-06-2011 |
20110240928 | Composites with high photoquenching factor of electroconduction based on polymer-metalorganic compounds - A composite material with a high photoquenching factor of electroconductivity comprising a multiple-component system which is a combination of a polymeric material matrix and a ferrocene-type compound contained in the polymeric material matrix. In one or more aspects of the invention, the polymer material matrix may be formed with polypropylene, high-density polyethylene, low-density polyethylene, polyvinyl alcohol, polyvinyl chloride, polyvinylidene fluoride, or a copolymer of vinylidene chloride and trifluoroethylene. Additionally, the ferrocene-type compound may be contained in the composite in an amount of 10 vol. % to 50 vol. % per 100 vol. % of the matrix, an, depending on the type of the polymer used as a matrix and on the content of the ferrocene-type compound in the matrix, the R | 10-06-2011 |
Patent application number | Description | Published |
20080269685 | Solvent-cast microneedle arrays containing active - In an aspect of the invention, an array of microprotrusions is formed by providing a mold with cavities corresponding to the negative of the microprotrusions, casting atop the mold a first solution comprising a biocompatible material and a solvent, removing the solvent, casting a second solution atop the first cast solution, removing the solvent from the second solution, and demolding the resulting array from the mold. The first solution preferably contains an active ingredient. | 10-30-2008 |
20090155330 | Vaccine Delivery via Microneedle Arrays - A microprojection array is provided, comprising an approximately planar base and a plurality of microprojections, wherein the array comprises a vaccine and a polymeric material. The array may have multiple layers. The vaccine may be placed in only one layer. In another embodiment of the invention, a method of preventing a disease is provided, comprising insertion into the skin of a patient an array of microprojections comprising a layer which comprises a vaccine for that disease and a polymer. | 06-18-2009 |
20130292868 | SOLVENT-CAST MICROPROTRUSION ARRAYS CONTAINING ACTIVE INGREDIENT - In an aspect of the invention, an array of microprotrusions is formed by providing a mold with cavities corresponding to the negative of the microprotrusions, casting atop the mold a first solution comprising a biocompatible material and a solvent, removing the solvent, casting a second solution atop the first cast solution, removing the solvent from the second solution, and demolding the resulting array from the mold. The first solution preferably contains an active ingredient. | 11-07-2013 |
Patent application number | Description | Published |
20140147489 | RAPIDLY DISSOLVING FILM FOR DELIVERY OF AN ACTIVE AGENT - A rapidly dissolving film is provided for delivery of an active agent to a moist body surface, e.g., mucosal tissue. The film comprises a film-forming binder, a rapidly dissolving polymeric material, and an active agent. | 05-29-2014 |
20140271781 | HYDROGEL COMPOSITIONS WITH AN ERODIBLE BACKING MEMBER - A composition is provided, wherein the composition comprises a water-swellable, water-insoluble polymer, a blend of a hydrophilic polymer with a complementary oligomer capable of hydrogen or electrostatic bonding to the hydrophilic polymer. The composition also includes a backing member. Active ingredients, such as a whitening agent, may be included. The composition finds utility as an oral dressing, for example, a tooth whitening composition that is applied to the teeth in need of whitening. The composition can be designed to be removed when the degree of whitening has been achieved or left in place and allowed to erode entirely. In certain embodiments, the composition is translucent. Methods for preparing and using the compositions are also disclosed. | 09-18-2014 |
20140322143 | WATER-ABSORBENT ADHESIVE COMPOSITIONS AND ASSOCIATED METHODS OF MANUFACTURE AND USE - An adhesive composition is provided that is water-insoluble yet water-absorbent, i.e., capable of absorbing up to 15 wt. % water or more. The composition in composed of a film-forming hydrophilic polymer with at least one linear segment having a plurality of recurring polar groups along the polymer backbone, a complementary multifunctional polymer with a plurality of recurring functional groups that noncovalently bind to the polar groups on the film-forming polymer, and plasticizer. A method for manufacturing the adhesive composition is provided as well. | 10-30-2014 |