194 results about "Liquid diffusion" patented technology

There are disclosed a water-absorbent resin composition and its production process, wherein the water-absorbent resin composition causes little gel-blocking and is excellent in the liquid permeability and liquid diffusibility and is high also in the absorption performances and further is strong also against the physical damage; and there are further disclosed a water-absorbent resin composition and its production process, wherein the water-absorbent resin composition has the following further advantages, in addition to the above, of involving little segregation of the metal compound and further having a dust prevention effect. One of water-absorbent resin compositions according to the present invention is a water-absorbent resin composition comprising water-absorbent resin particles obtained by polymerizing a monomer including acrylic acid and/or its salt, with the composition having a mass-average particle diameter of 100 to 600 μm and comprising water-soluble polyvalent metal salt particles and the water-absorbent resin particles that have been surface-crosslinked.

The water absorbent resin composition and the production method thereof according to the present invention are characterized by including: water absorbent resin particles having an internal cross-linked structure obtained by polymerizing a water-soluble unsaturated monomer; a nitrogenous ketone compound (A) (containing no carboxyl group) having a structure represented by formula (1); and a bivalent and/or trivalent and/or tetravalent water-soluble metal salt, wherein a total amount of the nitrogenous ketone compound (A) and the bivalent and/or trivalent and/or tetravalent water-soluble metal salt ranges from 0.01 to 100 parts by mass with respect to 100 parts by mass of the water absorbent resin particles, thereby providing a water absorbent resin composition, having an excellent absorption capacity represented by a centrifuge retention capacity (CRC), an absorbency against pressure of 4.83 kPa (AAP) etc., having excellent liquid permeability and liquid diffusion properties, having excellent fluidity at the time of moisture absorption, having an excellent damage resistance property, effectively suppressing occurrence of dusts, hardly bringing about permeation of added metal compounds into water absorbent resin particles, hardly bringing about segregation of added metal compounds.

An appliance for the delivery of at least one bioactive agent to the eye has at least one diffusion attenuator within a hydrophilic or silicone-hydrogel contact lens. The bioactive agent can be a drug or a nutraceutical. The diffusion attenuator can be a plurality of solid particles or phase separated liquid aggregates within at least one continuous phase of the lens where the diffusion attenuators promote a tortuous path for the diffusion of the bioactive agent to mediate the rate by which the bioactive agent diffuses from the contact lens. The diffusion attenuator can be homogeneously dispersed throughout at least one continuous phase of the lens to modify the diffusivity of the bioactive agent through that phase. The diffusion attenuator can have little or no affinity for the bioactive agent or can be miscible with the bioactive agent. The diffusion attenuator can be incorporated while forming the contact lens by polymerization of a monomer mixture containing the diffusion attenuator. For liquid diffusion attenuators, the liquid can be co-absorbed with a solvent into the lens followed by removal of the solvent, where the bioactive agent can be co-absorbed or subsequently absorbed after the loading of the diffusion attenuator. The diffusion attenuator can be Vitamin E.

A distribution tray for distribution of vapor and liquid across a vessel has a plurality of downcomers extending above the tray and having open upper and lower ends. A liquid conduit for each downcomer has an inlet, a section for upward liquid flow, and openings in fluid communication with the downcomer. A reduced flow area section and a device for improved liquid spread may be used at the outlet of the downcomer. During operation, vapor enters the upper downcomer end. Liquid collected on the tray flows through the inlet, upward through the conduit, and through the openings into the downcomer, where the liquid is mixed with downwardly-flowing vapor. The two-phase stream passes the reduced flow area section with increased velocity for improved dispersion of the liquid before the stream flows through the device for improved liquid spread, and then exits through the lower end of the downcomer.

A device for treatment of wounds using reduced pressure, comprising

• • a pump,
  • a gas barrier cover,
  • a first compressible material which expand after compression,
  • a second material capable of absorbing wound fluids several times its own weight.

The first and second material are arranged inside the cover and form a reservoir connected to said pump, The device further comprising

• • an inlet for connecting the reservoir with a wound
  • a wound pad to be arranged in the wound cavity and
  • a sealing covering the wound and said wound pad.

A third material with high liquid spreading capability is arranged around at least a major part of the first material, and said second material is in the form of at least one layer arranged outside the third material and separated from the first material by said third material.

An insert of a cartridge for use with a liquid diffusing device is provided. The insert includes a body, an inlet provided in the body to receive diffused liquid generated within the cartridge during operation of the liquid diffusing device, an outlet zone defined at least in part by the body through which to discharge the diffused liquid toward an external environment, and a tortuous passage extending between the inlet and the outlet zone to aid in further reducing an average particle size of the diffused liquid as the diffused liquid moves through the tortuous passage. Removable cartridges for use with a diffusion device are also provided which include such an insert.

A disposable diaper (1A) is equipped with a central absorbent body (4) spanning from a back-side section (A) to an abdomen-side section (B), and with waist flaps (6a, 6b) having a hydrophilic sheet (7) disposed therein. The hydrophilic sheet (7) has an inner hydrophilic sheet (71) and an outer hydrophilic sheet (72) disposed on the side of a surface not in contact with the skin. The outer hydrophilic sheet (72) uses elements having greater liquid diffusion properties that the inner hydrophilic sheet (71). The inner hydrophilic sheet (71) and outer hydrophilic sheet (72) are disposed in a waist region (A1) that includes the region between the edge (61) of the wast flap (6a) on the back-side section (A) and the edge (41) of the absorbent body (4). On the waist flap (6a), gathers that extend in the width direction (X direction) of the diaper (1A) are formed in an elastic waist member (8) disposed within the waist flap (6a).

A fuel cell has at least one electrode having channels for delivering reactants, products, or both. The electrode is an anode or cathode of the fuel cell, or both. The electrode can serve as both a liquid diffusion layer and a flow field plate, thus replacing the traditional elements of carbon paper, cloth diffusion layer, and anode current collector. In some aspects, the fuel cell uses methanol, and the electrode is formed from flexible graphite. The electrode can have a structure sufficient to permit methanol diffusion while preventing methanol crossover. The electrode can also improve volumetric power density and eliminate contact resistance typically present between a conventional flow field plate and conventional diffusion electrode layer.

A cleaning composition that can discharge the color of blood, menstrual fluids, or other organic stains is provided. In particular, the present invention achieves a balance between control of unwanted liquid spreading by lateral wicking on a stained textile fabric to lessen the size of wet spots and maintaining the cleaning efficacy of the composition by means of specific kinds of thickening agents. The composition includes an oxidizing agent such as peroxides, a cell-lysing agent, a chelating agent, an antioxidant, a thickener, and other optional ingredients that are selectively employed to achieve an aqueous based composition that exhibits good shelf stability and stain removal properties. The thickening agent may include a cellulosic or clay material, starch, gum, fatty acid, fatty alcohol, hydrophilic colloidal particles, polyoxyethylene glycol or polyoxyethylene glycol derivatives including fatty acid esters and ethers, or a combination thereof.

The present invention provides an electronic part mounting method which enables joining of electrodes at a low temperature and within a short time, can obtain the high reliability and, further, enables joining at a fine pitch. In an electronic part mounting method which joins circuit electrodes which are formed over a circuit board and die electrodes which are formed over the electronic parts thus mounting the electronic parts on the circuit board, a low-melting-point metal layer is preliminarily formed over the circuit electrode and/or the die electrode and, thereafter, the circuit electrode and the die electrode are arranged to face each other and are heated and pressurized for melting low-melting-point metal thus diffusing the low-melting-point metal into the circuit electrode and the die electrode by solid-liquid diffusion.

A bubble making toy includes a propeller to cause liquid from an outlet port to spread across the space formed in a ring downstream of the propeller. The air generated by the propeller rotates under the action of a fan upstream of the propeller, and causes the ejection of air bubbles from the toy. The bubbles are formed by liquid which is pumped from a reservoir to a dispensing port above the circumferential ring. There is a second reservoir connected to an outlet and operable by finger action to effect the ejection of fluid such as water from a second orifice from the toy. The freely rotating propeller is mounted in the air path from the housing to the outlet for the bubbles and assists in spreading liquid across the space defined by the circumferential ring onto which liquid flows from the outlet port.

A method and system of controlling operation of a diffusion appliance to treat the atmosphere within an enclosed space. The appliance may be programmed to operate according to a control scheme specifying a flow rate of liquid to a diffusion means and a periodic operation of the diffusion means. Control schemes may be associated with different volumes of spaces to be treated by the appliance. Anti-fatigue schemes may provide variation of the flow rate or periodic operation of the appliance. Initiation controls schemes may be used to start treatment of the space before the appliance is programmed to operate according to one of the control schemes.

The present invention provides a manufacturing method of a semiconductor module which enables the joining at a low temperature within a short time and can obtain more reliable joining portions by performing the joining without using a solder joining medium. The manufacturing method of a semiconductor module includes a first joining step for joining first circuit electrodes which are formed on a circuit board and back-surface-side die electrodes of a semiconductor die, a second joining step for joining the front-surface-side electrodes of the semiconductor die and one ends of lead frames, and a third joining step for joining another ends of the lead frame and second circuit electrodes which are formed on the circuit board, wherein a low-melting-temperature metal layer is formed on one conductive portion of a pair of conductive portions to be joined and, thereafter, the low-melting-temperature metal layer is heated and pressurized thus diffusing the low-melting-temperature metal layer into the pair of conductive portions by solid-liquid diffusion whereby the conductive portions are joined to each other.

The invention discloses a method for enhancing the coercive force of a neodymium-iron-boron magnet through evaporation grain boundary diffusion, and belongs to the technical field of magnetic materials. The method comprises the specific technical steps that a neodymium-iron-boron orientated compact is subjected to vacuum pre-sintering, and a pre-sintered compact is obtained; rare earth and alloy elements are subjected to evaporation deposition to be in a form of ionized atoms/molecules and are diffused into the neodymium-iron-boron pre-sintered compact through pores of the pre-sintered compact, subsequently, the rare earth and alloy elements are densified through microwave sintering, and grain boundary diffusion is generated, so that the grain boundary structure of the magnet is improved,and the coercive force of sintered neodymium-iron-boron is improved. The method has the advantages that the rare earth and alloy elements as a diffusion source are in the form of gas-phase atoms/molecules, compared with a liquid diffusion source, the elements can more uniformly, effectively and deeply permeate into the magnet, and the periphery of the neodymium-iron-boron main phase is coated withthe elements; through testing, the coercive force of the neodymium-iron-boron magnet product obtained through gas-phase grain boundary diffusion can be increased by 30% or above, the diffusion depthcan reach 6 mm, and the neodymium-iron-boron magnet product has no hydrogen or fluorine generated through liquid-phase diffusion.

The invention relates to a device and method capable of measuring liquid-liquid diffusion coefficient at different temperatures. In the invention, solution in different concentrations is injected into a micro fluid control chip 2 by inject pumps 1 and 5, concentration distribution of mixing runner in the micro fluid control chip 2 is measured by a Raman spectroscopy, and further liquid-liquid diffusion coefficient is inverted. The micro fluid control chip is placed on a soaking block 4, and the soaking block is connected with a metering pump 7 and a thermostatic waterbath 8, so as to realize measurement at different temperatures. The micro fluid control chip 2 realizes high-accuracy measurement by design of winding micro runner structure before mixing, mixing runner section designed as a rectangle with high crown proportion and aluminizing at the bottom of runner. The device and method of the invention can realize continuous measurement of liquid-liquid diffusion coefficient at different temperatures and has the advantages of less sample usage, low cost, non contact, high sensibility, high repeatability, high efficiency, small error, safety and reliability and easy operation.

The present invention provides: an absorbent structure and an absorbent article, which are excellent in both liquid diffusion ability and liquid storage ability, and which are excellent in the dry feeling and the amount of wet back of the aqueous liquid, and which can realize the thinning and lightening more; and a water-absorbent resin fitly usable for the above absorbent structure and absorbent article. The absorbent structure, according to the present invention, comprises a liquid-diffusing member and a water-absorbent resin, with the absorbent structure being characterized in that when the capillary absorption index of the liquid-diffusing member at a height of 40 cm is referred to as A (A≧0.10), the capillary absorption index B of the water-absorbent resin at a height of 40 cm satisfies the following equation: B/A≧0.7 (equation 1).