A process for manufacturing an article, comprising the step of manufacturing the article via an additive fabrication process from a structural material, is notable in that the structural material comprises a polymer selected from the following group: (co)polycarbonates, polyesters, polyestercarbonates, polyformals, polyamides, polyethers, polyvinyl chloride, polymethyl (meth)acrylate, polystyrene or a combination of at least two thereof and an additive absorbing infrared radiation. The additive absorbing infrared radiation is selected for its chemical structure and its concentration in the structural material such that it reduces transmission by the structural material of light in the wavelength range between 600 nm and 1700 nm, determined on a sample 100 μm thick, by ≥2.5 percentage points relative to a structural material sample with a thickness of 100 μm that does not contain the additive absorbing infrared radiation. During the additive fabrication process the structural material is exposed at least temporarily to infrared radiation in the wavelength range between 600 nm and 1700 nm. An article obtainable by a process as described above is notable for its production from a structural material which comprises a polymer selected from the following group: (co)polycarbonates, polyesters, polyestercarbonates, polyformals, polyamides, polyethers, polyvinyl chloride, polymethyl (meth)acrylate, polystyrene or a combination of at least two thereof and an additive absorbing infrared radiation, where the article, in the direction of its construction in the additive manufacturing process used to make it, has a tensile strength (ISO 527) which is >30% to . . . 100% of the tensile strength (ISO 527) of a specimen injection-moulded from the same structural material.

A method and device for purifying heptafluoroisobutyronitrile and a dilution gas from a used gas mixture comprising heptafluoroisobutyronitrile, a dilution gas and arcing by-products. The method comprising the steps of (a) contacting the used gas mixture with at least one adsorbent material to generate a gas stream depleted in arcing by-products; (b) contacting the gas stream depleted in by-products with a first membrane to obtain a first permeate stream rich in the dilution gas, and a first retentate stream rich in heptafluoroisobutyronitrile; (c) contacting the first permeate stream rich in the dilution gas with a second membrane to obtain a second permeate stream rich in the dilution gas and a second retentate stream rich in heptafluoroisobutyronitrile; and (d) combining the first and second retentate streams rich in heptafluoroisobutyronitrile.

A method and device for purifying heptafluoroisobutyronitrile and a dilution gas from a used gas mixture comprising heptafluoroisobutyronitrile, a dilution gas and arcing by-products. The method comprising the steps of (a) contacting the used gas mixture with at least one adsorbent material to generate a gas stream depleted in arcing by-products; (b) contacting the gas stream depleted in by-products with a first membrane to obtain a first permeate stream rich in the dilution gas, and a first retentate stream rich in heptafluoroisobutyronitrile; (c) contacting the first permeate stream rich in the dilution gas with a second membrane to obtain a second permeate stream rich in the dilution gas and a second retentate stream rich in heptafluoroisobutyronitrile; and (d) combining the first and second retentate streams rich in heptafluoroisobutyronitrile.

The present disclosure relates to a semipermeable membrane. The present disclosure aims to provide a semipermeable membrane having tolerance against a decrease over time in substance permeability. The present disclosure provides a semipermeable membrane containing a resin. The permeation rate of albumin in the semipermeable membrane is no lower than 30%. The albumin adsorption amount obtained when the semipermeable membrane measuring 1 cm on each side is immersed in a 0.1% albumin solution for 90 minutes is no greater than 10 g/cm.sup.2. The water permeation amount obtained when water is sucked through the semipermeable membrane at a negative pressure of 30.2 kPa is expressed by no smaller than 1,000 L/(m.sup.2 hour). The semipermeable membrane can isolate a cell from an external environment.

The present disclosure relates to a semipermeable membrane. The present disclosure aims to provide a semipermeable membrane having tolerance against a decrease over time in substance permeability. The present disclosure provides a semipermeable membrane containing a resin. The permeation rate of albumin in the semipermeable membrane is no lower than 30%. The albumin adsorption amount obtained when the semipermeable membrane measuring 1 cm on each side is immersed in a 0.1% albumin solution for 90 minutes is no greater than 10 g/cm.sup.2. The water permeation amount obtained when water is sucked through the semipermeable membrane at a negative pressure of 30.2 kPa is expressed by no smaller than 1,000 L/(m.sup.2 hour). The semipermeable membrane can isolate a cell from an external environment.

The invention relates to an implantable device to deliver drug formulations through a nanoporous membrane. The current related arts for delivery of drug formulations include tablets, injections, implantable pellets, injectable polymer depots, and implantable infusion pumps. The invention employs a reservoir to contain the drug formulation, a nanoporous membrane, and a formulation of estrogen.

The invention relates to an implantable device to deliver drug formulations through a nanoporous membrane. The current related arts for delivery of drug formulations include tablets, injections, implantable pellets, injectable polymer depots, and implantable infusion pumps. The invention employs a reservoir to contain the drug formulation, a nanoporous membrane, and a formulation of estrogen.

A cell retention device includes a structured support with a plurality of circumferentially distributed ribs to retain the active filtering surface of a flexible, porous membrane filter medium. The filter medium surrounds the support in contact with the peaks of the ribs, thereby forming axial voids between the rib peaks. This arrangement imparts sufficient structural support over small regions of the filter medium to facilitate its use in a circular (or other rounded) configuration while providing sufficient channel volume to support high throughput of fluid sparse of cells.

A cell retention device includes a structured support with a plurality of circumferentially distributed ribs to retain the active filtering surface of a flexible, porous membrane filter medium. The filter medium surrounds the support in contact with the peaks of the ribs, thereby forming axial voids between the rib peaks. This arrangement imparts sufficient structural support over small regions of the filter medium to facilitate its use in a circular (or other rounded) configuration while providing sufficient channel volume to support high throughput of fluid sparse of cells.

A novel or improved base film for impregnation, impregnated base film, product incorporating the impregnated base film, and/or related methods as shown, claimed or described herein.