Abstract: Medical adhesive articles include a layer of adhesive and a modified substrate layer where the layer has a plurality of cuts arrayed in a pattern that may be random or the pattern can be arrayed along at least one axis. The cuts are gaps, but the gaps are not visible to the naked eye when the adhesive article is in an unstressed state, and at least some of the cuts become gaps that are visible to the naked eye and form apertures when the adhesive article is in a stressed state. The adhesive articles can be used to adhere a medical device to skin.

Abstract: Medical tapes include an optically transparent tape backing and an optically transparent adhesive layer, typically a pressure sensitive adhesive, disposed on the backing The tape is optically transparent and has a moisture vapor transmission rate (MVTR) of at least 250 g/m2 /24 hrs/37° C./100-10% RH using the inverted cup method. The tape remains optically transparent when over-taped, such that a multi-layer tape stack of at least 2 layers of tape are formed.

Abstract: The present invention is an optically clear, curable adhesive including a polyvinylbutyral, a polyurethane (meth)acrylate, a (meth)acrylate monomer, and a photoinitiator. The polyvinylbutyral has a dynamic viscosity of between about 9 and about 13 mPa·s and a polyvinyl alcohol weight percent of less than about 18%. The polyurethane (meth)acrylate includes the reaction product of a diol, at least one diisocyanate, and a hydroxyfunctional (meth)acrylate or an isocyanatofunctional (meth)acrylate. When the optically clear, curable adhesive is placed between two transparent substrates and made into a laminate, the laminate has a haze of less than about 6%, a transmission of greater than about 88%, and an optical clarity of greater than about 98% when cured. The optically clear, curable adhesive also has a peel adhesion of at least about 100 g/cm based on ASTM 3330 when cured.

Abstract: Blend compositions include at least one polydiorganosiloxane polyoxamide copolymer, and at least 70% by weight of at least one silicone tackifying resin. The blend composition is non-tacky at room temperature up to a temperature of at least 100° C. The polydiorganosiloxane polyoxamide copolymer can be a linear or branched copolymer. The blend compositions provide solid, non-powdery, and non-tacky delivery vehicles for silicone tackifying resin.

Abstract: Absorbent medical articles include a first absorbent layer with a radio opaque element located on the surface of the first absorbent layer. The radio opaque element has at least one segment that is non-linear and has at least one vertex, the vertex defines an angle of at least 15° and less than 165°. The radio opaque element may be a continuous or discontinuous element. The absorbent medical article may include additional absorbent layers. The radio opaque element makes the absorbent medical article detectable if left inside a patient.

Abstract: An optical element includes a porous layer with a network of a plurality of interconnected voids. The porous layer is optically diffusive to at least one wavelength of light when the network of interconnected voids is substantially free of fluid. The porous layer of the optical element undergoes a detectable optical change upon fluid ingress into the network or egress from the network of interconnected voids.

Abstract: Adhesive constructions include a mammalian skin surface and an adhesive article in contact with the mammalian skin. The adhesive article includes a substrate and an adhesive layer. The adhesive layer in contact with the mammalian skin is a microstructured surface with channels. At least one channel extends to at least one boundary of the adhesive layer. The microstructured surface is a permanently microstructured surface, such that the channels in the surface of the adhesive layer permit transport of fluid.

Abstract: Hyperbranched polydiorganosiloxane polyoxamide polymers are formed from reaction mixtures containing AXg and BZm compounds where either A or B is a siloxane-based group, and each X is either an oxalylamino-functional group or an amino-functional group, and each Z is either an amino-functional group or an oxylamino-functional group, such that upon reaction X and Z form an oxamide bond.

Abstract: Medical dressings including stiffening systems fixedly attached to backing layers are described herein along with methods of using the medical dressings. The stiffening system is fixedly secured to the backing to limit flexing and stretching of the backing layer. Typically, the medical dressing and stiffening system is applied over a medical device that is secured to skin. The stiffening system covers some of the medical device and also extends beyond the medical device. The stiffening system stabilizes the medical device over the skin.

Abstract: Aspects of the present disclosure relate to a self-mating fastener that includes a backing having a first side, and a rail element protruding perpendicularly from the first side of the backing. The rail element extends in a longitudinal direction along the backing. The rail element has a base portion attached to the first side of the backing and a cap portion distal from the backing. The cap portion has a cap width that is greater than a width of the base portion and the cap portion overhangs the base portion on opposing sides. The self-mating fastener includes an electrically conductive contact element proximate to the rail element.

Abstract: An optical device is disclosed and includes an optical sensor, a plurality of photosensitive pixels disposed on the optical sensor, a wavelength-selective optical filter in optical communication with the photosensitive pixels, and a plurality of spatially-variant written regions disposed in the optical filter, the written regions having a transmission spectrum and each of the written regions being larger than each of the pixels.

Abstract: Layers of siloxane tackifying resins that do not contain siloxane fluids, gums or polymers act as adhesion promotion agents. Articles include a substrate layer, a non-tacky siloxane tackifying resin adhesion promotion layer disposed on the surface of the substrate layer, and a crosslinked siloxane layer in contact with the adhesion promotion layer. The crosslinked siloxane layer is not an adhesive layer. The adhesion of the crosslinked siloxane layer to the substrate is greater than the adhesion without the non-tacky siloxane tackifying adhesion promotion layer.

Abstract: Dual-sided adhesive articles include a first crosslinked pressure sensitive adhesive layer with a first major surface and a second major surface, a second siloxane-based pressure sensitive adhesive layer with a first major surface and a second major surface, such that the first major surface of the second siloxane-based pressure sensitive adhesive layer is in contact with the second major surface of the first crosslinked pressure sensitive adhesive layer. The articles also include a release liner having a microstructured surface with an array of microstructures, where the microstructured surface is in contact with the second major surface of the second siloxane-based pressure sensitive adhesive layer. The microstructures of the microstructured surface of the second siloxane-based pressure sensitive adhesive layer are unstable when not in contact with the microstructured release liner, and disappear over time when in contact with a substrate.

Abstract: Transfer tapes include a releasing substrate and an adhesive layer adjacent to the surface of the releasing substrate. The adhesive layer includes a at least one siloxane-based copolymer, and at least one siloxane tackifying resin. The adhesive layer is a pressure sensitive adhesive at room temperature and is convertible into a ceramic-like layer by bake-out at a temperature of from 100-500°.

Abstract: Adhesive articles with multi-layer adhesive constructions include a substrate and a multi-layered adhesive. The multi-layered adhesive includes a layer of a first adhesive in contact with the surface of the substrate, and a layer of siloxane-based pressure sensitive adhesive in contact with the first adhesive. The siloxane-based pressure sensitive adhesive includes a siloxane-(meth)acrylate co-polymer. The thickness of the siloxane-based pressure sensitive adhesive layer is less than the thickness of the first adhesive layer.

Abstract: Siloxane-based gel adhesives with improved shear holding power are prepared from curable compositions. The curable compositions include a siloxane fluid with a viscosity of at least 1,000,000 centiPoise, a siloxane-(meth)acrylate co-polymer, and siloxane tackifying resin. The curable compositions can contain an initiator or can be cured by e-beam radiation without an initiator. The siloxane-(meth)acrylate copolymer is the reaction product of a reaction mixture of an ethylenically unsaturated siloxane-containing macromer, an alkyl (meth)acrylate monomer; optionally a reinforcing monomer, and an initiator.

Abstract: Dry electrodes are electrodes for attachment to human skin without skin preparation or the use of electrolyte gels. The electrode includes a substrate, electrically conductive particles with at least one point, in contact with the substrate, a supporting layer that envelopes the electrically conductive particles with points that protrude from the supporting layer, and an electrical connector. Some electrodes have an electrically conductive substrate, other electrodes have an electrically conductive supporting layer.

Abstract: The present invention is an optically clear, curable adhesive including a polyvinylbutyral, a polyurethane (meth)acrylate, and a photoinitiator. The polyvinylbutyral has a dynamic viscosity of between about 9 and about 13 mPa·s and a polyvinyl alcohol weight percent of less than about 18%. The polyurethane (meth)acrylate includes the reaction product of a diol, at least one diisocyanate, and a hydroxyfunctional (meth)acrylate or an isocyanatofunctional (meth)acrylate. When the optically clear, curable adhesive is placed between two transparent substrates and made into a laminate, the laminate has a haze of less than about 6%, a transmission of greater than about 88% and an optical clarity of greater than about 98% when cured. The optically clear, curable adhesive also has a peel adhesion of at least about 100 g/cm based on ASTM 3330 when cured.

Abstract: Blend compositions include at least one polydiorganosiloxane polyoxamide copolymer, and at least 70% by weight of at least one silicone tackifying resin. The blend composition is non-tacky at room temperature up to a temperature of at least 100° C. The polydiorganosiloxane polyoxamide copolymer can be a linear or branched copolymer. The blend compositions provide solid, non-powdery, and non-tacky delivery vehicles for silicone tackifying resin.

Abstract: The disclosed stack carries individual sheets arranged one on top of the other for individual removal of each successive sheet from the stack. Holding the stack together are individual substrates with an adhesive portion. The adhesive portion on a substrate partially secures to a sheet and partially secures to an underlying substrate on alternating ends of the stack. Therefore, the free end of the sheet can be easily pulled free from the stack, exposing a free end of the next underlying sheet to be easily pulled free from the stack.