35results about How to "More hydrophilic" patented technology

A method and device for the detection of low-level harmful substances in a large volume of fluid comprising using a concentrator system to produce a retentate and analyzing the retantate for the presence of at one harmful substance. The concentrator system performs a method comprising pumping at least 10 liters of fluid from a sample source through a filter While pumping, the concentrator system diverts retentate from the filter into a container. The concentrator system also recirculates at least part of the retentate in the container again through the filter. The concentrator system controls the speed of the pump with a control system thereby maintaining a fluid pressure less than 25 psi during the pumping of the fluid; monitors the quantity of retentate within the container with a control system, and maintains a reduced volume level of retentate and a target volume of retentate.

A method for recovering ruthenium oxide or gold and titanium or titanium oxide from a bipolar plate at the end of the life of a fuel cell stack so as to use these materials in other fuel cell stacks thereafter. The bipolar plate is immersed in a solution including a suitable acid that dissolves the titanium or titanium oxide. The ruthenium oxide or gold will be released from the plate and will float on the solution from which it can be removed. The solution is then heated to evaporate the acid solution leaving a powder of the titanium oxide. The stainless steel of the bipolar plate is thus cleaned of the titanium or titanium oxide, and can be reused.

The present invention relates to a surfactant composition, consisting of 70 wt %-99.9 wt % sophorolactone, 0-1 wt % sophorolipid acid, less than 0.1% residual substrate, and remainder water. The invention further relates to products comprising this composition or hydrolysates thereof. The invention also relates to uses of these products and hydrolysates.

A time and cost effective production method for medical devices with a hydrophilic coating is provided, which ensures adequate adhesion to the substrate, as well as good water retention and low friction properties. Specifically, the method comprises the steps of: providing a substrate; applying, in one or more steps, a coating solution comprising a hydrophilic polymer to a surface of said substrate to form a non-cross-linked hydrophilic coating on said substrate; and irradiating the coated substrate, wherein said irradiation is adapted both to cross-link said hydrophilic coating and to simultaneously sterilize the medical device.

Hereby, a non-cross linked hydrophilic coating is first obtained on the substrate, which coating is loosely connected to the substrate, and which is not fit for use as a catheter coating. However, after the step of irradiating the coated substrate, the hydrophilic coating becomes cross-linked, and fit for use e.g. on a urinary catheter. Further, since one and the same irradiation step is used to effect both cross-linking and sterilization, the production can be made more efficient, using fewer production steps and with a shortened production time.

A buffering system having a pKa which may be selected based on the environment in which the solution is designed to be used. Solutions containing the buffering system according to the present invention include borate-polyol complexes as the primary buffering agents, and may include one or more of the following: an aqueous liquid medium; an antimicrobial component; a surfactant component; a viscosity-inducing component; and/or a tonicity component. The borate-polyol buffering system may be formulated to have a lower pKa than traditional systems.

A unitary laundry detergent article that is completely or substantially water-soluble, which contains two or more non-fibrous, surfactant-containing sheets with one or more discrete, surfactant-containing particles located between such sheets. The non-fibrous sheets contain a first surfactant that is relatively less hydrophilic, while the discrete particles contain a second surfactant that is relatively more hydrophilic.

In a preferred embodiment, the present process involves subjecting a fabric having splittable conjugate yarns both to an acidic treatment and to a basic treatment, each of which erodes a portion of the components of the conjugate yarns. The acid treatment, given certain reaction kinetics, removes a portion of the polyamide element of the conjugate filament. The basic treatment has a similar effect on the polyester element of the conjugate filament, making it more hydrophilic. The at least partial removal of the polyamide component, coupled with the increased hydrophilicity of the polyester component, results in a fabric having enhanced absorptive properties. In an alternate embodiment, treatments with only acid or only basic solution may be employed.

Scintillant-doped polystyrene core nanoparticles surrounded by a silica shell can be used to quantify low-energy radionuclides. The nanoparticles are recoverable and re-useable, which may reduce waste and allow for sample recovery. Unlike traditional liquid scintillation cocktail (LSC) formulations, the nanoparticles are made from non-toxic and non-volatile components, and can be used without the aid of surfactants, making them a possible alternative to LSC for reducing the environmental impact of studies that employ radioactive tracers. Recognition elements attached to the functionalized silica surfaces of the nanoparticles allow for separation-free scintillation proximity assay (SPA) applications in aqueous samples. Lipid membrane coatings deposited on the nanoparticle surface can significantly reduce the non-specific adsorption of proteins and other biomolecules, and allow for the incorporation of membrane proteins or other membrane associated binding molecules.

Novel compositions of matter synthesized from acrylonitrile and crosslinker, and subsequently coated with various hydrophilic monomers, can be used in the remediation of uranyl ions from groundwater, drinking water, or wastewater and as part of a system for measurement of uranium in environmental and biological samples.

The present invention concerns a process for oxidizing lignin at alkaline conditions. This oxidized lignin can be used as a dispersant in various end-products, for example as a renewable plasticizer in cement-containing products, such as concrete, where the ability of the oxidized lignin to endure alkaline conditions is an advantage. Further, the invention concerns a concrete mixture containing aggregate, cement, water and a plasticizer formed of oxidized lignin, and a process for producing such a concrete mixture. The oxidized lignin can be manufactured using a process, where the lignin starting material is reacted with an oxidizing agent in solution in alkaline conditions.

Provided is a tetraphenylbacteriochlorin derivative represented by the formula (I): [wherein R<1>, R<2>, R<3 >and R<4>, independently from each other, are a residue of a monosaccharide represented by the formulae: (wherein, R is a hydrogen or a protecting group)], or its salt. The tetraphenylbacteriochlorin derivative or its salt has a large molar extinction coefficient at long wavelengths which are expected to have a high tissue-penetrating property, and exhibits high selectivity to tumor cells and hydrophilicity.

The present invention relates to an enzymatic stimuli-responsive amphiphilic hybrid delivery system in micellar form, based on a hydrophilic polyethylene glycol (PEG) polymer conjugated to a hydrophobic dendron. The delivery system disassembles upon enzymatic stimuli/cleavage. The present invention further provides methods of use of the hybrid delivery system and to a kit comprising the same.