摘要:
Cyanoacrylate preparations for medical and surgical applications are sterilized by heating in a suitable container at a temperature of at least 160.degree. C. The preferred container is a squeezable aluminum tube and the preferred temperature is above 170.degree. C. Cyanoacrylate adhesive compositions sterilized by heat have improved shelf life compared to those sterilized by ionizing radiation.
摘要:
An apparatus is described for coating a flexible substrate with at least a first organic layer and a first inorganic layer. The apparatus comprises a first and a second chamber and an atmosphere decoupling slot between the first and the second chamber. A printing facility is arranged in the first chamber, for printing the flexible substrate with a mixture comprising at least one precursor for a polymer, oligomer or a polymer network and a polymerization initiator. A curing facility is arranged in the first chamber, for curing the deposited mixture, therewith forming the at least first organic layer. A vapor deposition facility is arranged in the second chamber, for depositing the at least first inorganic layer at the substrate provided with the at least first organic layer. The apparatus comprises a facility for guiding the flexible substrate along the printing facility, along the curing facility and via the atmosphere decoupling slot along the vapor deposition facility.
摘要:
A light-emitting device is disclosed comprising an organic light-emitting diode structure and an encapsulation comprising a light-transmitting window with at least a first inorganic layer, an organic layer and a second inorganic layer, the organic layer comprising domains of a dispersed first organic component embedded by a second component, the first and the second component having a mutually different refractive index, the organic layer being sandwiched between the first and the second inorganic layer.
摘要:
A light-emitting device is disclosed comprising an organic light-emitting diode structure and an encapsulation comprising a light-transmitting window with at least a first inorganic layer, an organic layer and a second inorganic layer, the organic layer comprising domains of a dispersed first organic component embedded by a second component, the first and the second component having a mutually different refractive index, the organic layer being sandwiched between the first and the second inorganic layer.
摘要:
A fast curable non-isocyanate-based polyurethane- and polyurethane-epoxy network nanocomposite polymeric compositions are derived upon crosslinking a mixture comprising of natural or modified nano-clay [ionic phyllosilicate] with platelet thickness in the scale of Å (˜1 nm) and aspect ratio (length/thickness) higher than 10 (nm)] preferably natural or modified montmorillonite with either a monomer(s) or oligomer(s) bearing at least one cyclocarbonate group or a mixture of the latter with an epoxy resin, with a hardener, which is a monomer or oligomer or mixtures therefrom, bearing primary and/or secondary amino groups. The use of the nanoclays reduces the gel time and increases the adhesion of the cured polyurethane and polyurethane/epoxy hybrid and also reduces its water absorption.
摘要:
An apparatus is described for coating a flexible substrate with at least a first organic layer and a first inorganic layer. The apparatus comprises a first and a second chamber and an atmosphere decoupling slot between the first and the second chamber. A printing facility is arranged in the first chamber, for printing the flexible substrate with a mixture comprising at least one precursor for a polymer, oligomer or a polymer network and a polymerization initiator. A curing facility is arranged in the first chamber, for curing the deposited mixture, therewith forming the at least first organic layer. A vapor deposition facility is arranged in the second chamber, for depositing the at least first inorganic layer at the substrate provided with the at least first organic layer. The apparatus comprises a facility for guiding the flexible substrate along the printing facility, along the curing facility and via the atmosphere decoupling slot along the vapor deposition facility.
摘要:
Bioabsorbable cyanoacrylate-based tissue adhesives containing bioabsorbable copolymers are disclosed. The copolymers are preferably derived from &egr;-caprolactone, lactide and glycolide monomers or from butyl 2-cyanoacrylate, glycolide, lactide, &egr;-caprolactone monomers. The adhesives are characterized by increased biodegradability, increased viscosity and increased flexibility. The adhesives are useful for wound and incision closure, and for medical devices, including implants.
摘要:
An opto-electric device is presented that comprises an opto-electric element enclosed by a barrier structure for inhibiting a transmission of moisture from an environment towards the opto-electric element. The barrier structure includes a stack of layers comprising at least an inorganic layer and a moisture getter material in a layer arranged between the inorganic layer and the opto-electric element. The stack includes a lateral diffusion layer, wherein the getter material is present in a separate getter layer arranged between the opto-electric element and the lateral diffusion layer and/or the getter material is present in the lateral diffusion layer.
摘要:
The invention relates to cured (meth)acrylate based adhesive composition, comprising at least two co-continuous phases of interpenetrating networks and at least two types of polymeric inclusions, in which one of the co-continuous phases comprises a polymer or copolymer based on at least one acrylic or methacrylic acid monomer or a derivative thereof. These compositions exhibit better facture toughness, especially at low temperatures.
摘要:
A fast curable non-isocyanate-based polyurethane- and polyurethane-epoxy network nanocomposite polymeric compositions are derived upon crosslinking a mixture comprising of natural or modified nano-clay [ionic phyllosilicate] with platelet thickness in the scale of A (˜1 nm) and aspect ratio (length/thickness) higher than 10 (nm)] preferably natural or modified montmorillonite with either a monomer(s) or oligomer(s) bearing at least one cyclocarbonate group or a mixture of the latter with an epoxy resin, with a hardener, which is a monomer or oligomer or mixtures therefrom, bearing primary and/or secondary amino groups. The use of the nanoclays reduces the gel time and increases the adhesion of the cured polyurethane and polyurethane/epoxy hybrid and also reduces its water absorption.