摘要:
One aspect of the present invention relates to magnetic nanoparticles colloidally stabilized in aqueous milieu by association with an organic phase. The organic phase may be either a fluorinated polymer or an organic hydrocarbon bilayer, wherein the two layers are chemically bonded to each other. The stabilized particles are further non-toxic and provide useful enhancements in bioprocesses. Another aspect of the present invention relates to compositions comprising an oxygen-dissolving fluid vehicle and surface modified, nanometer-sized magnetic particles. The inventive compositions have utility in a wide range of applications, but are particularly suitable for use as recyclable oxygen carriers, separation and purification vehicles, and bioprocessing media, including fermentation processes.
摘要:
Compositions for use in optical fiber coatings and optical fibers and optical fiber arrays using these coatings are disclosed, as are methods for making the same. The compositions comprise a combination of two different radiation curable urethane oligomers, and can further comprise one or more reactive monomers.
摘要:
A photocatalyst powder for environmental purification which comprises fine titanium dioxide particles and a porous coating layer of calcium phosphate formed on at least a part of the surface of the particles, and in which an anionic surfactant is present at least at the interface between the surface of the fine titanium dioxide particles and the porous coating layer of calcium phosphate. The photocatalyst powder is produced by dispersing fine titanium dioxide particles in an aqueous slurry containing an anionic surfactant and then forming a porous coating layer of calcium phosphate on the surface of the fine particles. This photocatalyst powder is used, for example, after having been supported on a molded organic polymer.
摘要:
A grease composition for use as a cable filling material which contains about 25 to 75 parts by weight of castor oil or a ricinoleate polyol, about 13 to 71 parts by weight of a hydroxy-terminated polymer of polymerized castor oil or the reaction product of a polyisocyanate compound and castor oil or a ricinoleate polyol, and about 4 to 12 parts by weight of colloidal particles such as silica, clay or mixtures thereof. Optionally, an antioxidant component can be added to impart high temperature resistance, a bleed inhibitor, typically of a rubber component, can be added to improve bleed resistance, a water blocking agent of a superabsorbent compound can be added to reduce water transmission, microspheres can be added to reduce the weight of the formulation, and/or conventional additives such as fungicides, bacteriocides etc. can be included. The invention also relates to an article of manufacture such as a cable having a sheath surrounding a plurality of optical fibers therein, with one of the grease compositions of the invention located therein.
摘要:
A wire construction comprising an electrically conductive core, two polymeric insulation layers and a layer of fiber braid between the insulation layers, characterized by excellent flexibility and resistance to cut-through and arc propagation.
摘要:
The present disclosure provides a wire or cable comprising a flame retardant-free thermoplastic inner sheath and an outer sheath composition comprising, based on the weight of the composition, (a) 10 wt% to 90 wt% of a TPU based resin, (b) 5 wt% to 90 wt% of a metal hydrate, (c) 2 wt% to 50 wt% of a nitrogen-based phosphorus flame retardant, and (d) 2 wt% to 50 wt% liquid phosphate modifier, wherein the outer sheath is in contact with the insulation covering, and wherein the outer sheath has a thickness from greater than zero to 0.8mm.
摘要:
One aspect of the invention relates to a method of preparing metal oxide coated substrates for various potential applications, and the coated substrate formed thereby.
摘要:
A method of making a load bearing member (30) for an elevator system (20) includes placing at least one tension member (32) adjacent one side (60) of a first layer (36) of a polymer material. A second layer (38), comprising a urethane in a disclosed example, is added adjacent to at least the one side (60) of the first layer (36) such that the tension member (32) is between the first layer (36) and the second layer (38). Such a technique allows for eliminating the bridges typically used to support the tension members in molding devices. Eliminating such bridges eliminates the resulting grooves associated with previous arrangements. Providing a grooveless exterior on the jacket (34) of the load bearing member (30) eliminates a significant source of potential vibration and noise in an elevator system.
摘要:
Polyurethane elastomer yarns (particularly spandex) containing certain silver-based antimicrobial formulations therein are provided. This invention relates to polyurethane elastomer yarns (particularly spandex) containing certain silver-based antimicrobial formulations therein. Such formulations comprise antimicrobial compounds, such as, preferably, triclosan and/or silver-containing ion-exchange resins, such as zirconium phosphate, glass, and/or zeolite compounds. The inventive spandex yarns exhibit excellent antimicrobial qualities as well as surprisingly good anti-tack/frictional characteristics. As a result, antimicrobial spandex yarns are provided which exhibit ease in processing, particularly in further knitting, weaving, etc., to produce fabrics therefrom. Such fabrics are also encompassed within this invention.
摘要:
The present invention relates to a coating for an optical fiber. The coating includes a monomer. The monomer includes an oxyglycidyl (meth)acrylate component. A coating with the monomeric component has exhibited an excellent polymerization rate. The present invention also relates to methods of making such optical fibers coated in accordance with the invention and the coated glass article.