152 results about "Superabsorbent polymer" patented technology

An absorbent article including a non-woven substrate of one or more layers of meltblown fibers and a first layer of spunbond fibers and a second layer of spunbond fibers. The absorbent article further includes an absorbent core comprising at least one of fibers or a superabsorbent polymer. At least one of the non-woven substrate or the absorbent may be treated with an alcohol repellency (“AR”) treatment.

The invention relates to absorbent paper as well as a preparation method and application thereof. The method comprises the following steps: pulping plant fiber pulp, adding sodium bicarbonate for pretreatment, and washing to obtain pretreated paper pulp; adding a dispersing agent, a wet strength agent and a composite antibacterial component into the pretreated paper pulp, and uniformly mixing to obtain mixed paper pulp; the composite antibacterial component is prepared from chitosan, polylysine and a modified copper oxide dispersion liquid; feeding the mixed paper pulp into a rotary screen paper machine to produce upper-layer single-layer wrinkling base paper, then compounding the upper-layer single-layer wrinkling base paper with lower-layer single-layer semi-forming base paper on which the macromolecular water-absorbent resin particles are scattered, and then drying to obtain the water-absorbent paper. The antibacterial rate of the absorbent paper on various pathogenic bacteria is larger than or equal to 99.5%, the antibacterial rate is still larger than or equal to 97% after 20 times of water washing, and the absorbent paper is high in water absorption speed, stable in physical performance, safe, environmentally friendly, controllable in cost, capable of being widely applied to the fields of hygienic products, medical dressings, food packaging and the like, simple in preparation process and suitable for industrial production.

A water-swellable semiconducting material is provided, comprising a semiconducting layer and a semiconducting water-swellable polymer layer on which the semiconducting layer is arranged. The semiconducting water-swellable polymer layer consists of conductive particles dispersed in a crosslinked superabsorbent polymer matrix. This material can be formed into tapes or other structures for insulating and protecting cables. The water-swellable semiconducting material can be applied to cables or other conductive materials to insulate them and protect the cables from water ingress.

The utility model discloses a leaking stoppage combined wax pill for efficiently blocking drilling leakage, which comprises an anti-expansion environment-friendly leaking stoppage combined wax pill body, and the anti-expansion environment-friendly leaking stoppage combined wax pill body comprises an expansion blocking component, an anti-expansion sealing component and an anti-expansion sealing component, the inner shell wraps the expansion plugging component and is used for sealing the expansion plugging component in the inner shell, so that the sealing and waterproof effects are achieved; the bridge plug framework plugging bonding structural component wraps the outer part of the inner shell; and the outer shell is wrapped outside the bridge plug framework plugging and bonding structural member, so that the plugging material is sealed, waterproof and protected. By adopting a proper and efficient waterproof protection method, various inert plugging materials can achieve better hydration anti-expansion protection before the anti-expansion environment-friendly plugging combined wax pill body is delivered to a leakage position in a hole, so that the situation that the plugging effect cannot be achieved due to the fact that a super absorbent resin expanding agent and the inert plugging materials are hydrated and expanded in advance is avoided; the drilling flushing fluid leakage can be quickly blocked.

This application relates to the field of ecological restoration technology, and discloses a vegetation restoration system for drawdown zones and its construction method. The system includes laying equipment and a roller. A drive motor of the laying equipment drives the winding roller to release a coil. The roller includes a fixing rod, is filled with superabsorbent polymer resin, and is sequentially wound with an inner base mat, a middle matrix containing plant stem nodes and fungal spores, and an outer mesh. The inner base mat is interwoven with capillary water-conducting bundles, the bottom of which is inserted into the fixing rod and embedded in the resin. The outer mesh is secured with gravity lever-type anchoring nails via eccentric hinges. During construction, the motor releases the coil at a uniform speed, causing the roller to unfold along the slope. The anchoring nails, as they rotate, droop under gravity and penetrate the topsoil layer for synchronous anchoring. The fixing rod, remaining at the bottom, lifts water upwards through the absorbent resin and water-conducting bundles. This invention achieves mechanized laying of base mats on steep slopes, constructs a capillary water-lifting system to alleviate drought, and improves vegetation survival rates.

The present invention relates to a thickened aqueous composition comprising from about 0.01% to about 10% by weight of a superabsorbent polymer, from about 0.1% to about 20% of a silicone elastomer; and from about 20% to about 98% of water.

This invention relates to a monomer composition for preparing superabsorbent polymers. The superabsorbent polymer is then incorporated into an absorbent article. The monomer composition for preparing superabsorbent polymers of this invention has a fast polymerization rate and therefore can minimize bubble loss during foam polymerization, thus providing a superabsorbent polymer with excellent absorption rate. Furthermore, the superabsorbent polymer prepared from the monomer composition for preparing superabsorbent polymers has high gel strength and therefore maintains its shape well even after water absorption, thus exhibiting excellent absorption performance despite external pressure.

[Problem] In fields such as tumor marker test and pregnancy test kit, it is known to concentrate a target component (protein) by utilizing a superabsorbent polymer (SAP) as a method for improving test sensitivity. However, due to the powder form, SAP exhibits difficulties in handleability and formability and also causes problems such as falling off. Furthermore, the concentration effect is hardly at a sufficient level. The present invention has been made in view of such problems and on the basis of the discovery that a fiber containing an ammonium salt-type carboxyl group and a crosslinked structure serves as a material for protein concentration having excellent handleability and formability, in addition to having a high protein concentration effect. [Solution] A fiber for protein concentration is a fiber that contains an ammonium salt-type carboxyl group and a crosslinked structure, and is characterized by having a water absorption ratio of 4-300 times.

Provided are: a method for producing a water-soluble polymer, the method making it possible to produce a water-soluble polymer under mild conditions from an adhesive as waste; a method for producing a water-absorbent polymer, the method making it possible to produce a water-absorbent polymer under mild conditions from an adhesive; a water-soluble polymer that can be produced from an adhesive; and a water-absorbent polymer that can be produced from an adhesive. The method for producing a water-soluble polymer according to an embodiment of the present invention includes bringing an adhesive treatment solution including a liquid having a Hansen solubility parameter of 31 or less and an alkali compound, the concentration of alkali compound in the adhesive treatment solution being 0.001-20 wt%, into contact with an adhesive.

A composition for conditioning keratin fibres comprising: a) at least one spherical particle of lipophilic modified silica; b) at least one superabsorbent polymer selected from starches grafted with acrylic polymers; and c) at least one hyaluronic acid cross-linked polymer. A cosmetic process for conditioning keratin fibers comprising applying a composition to the keratin fibers.

This invention discloses a method for preparing a green, environmentally friendly, biodegradable, salt-resistant, superabsorbent resin. The method includes mixing 10-15% polyvinyl alcohol, 10-15% humic acid, and 40-50% water, heating to 50-80°C, adding a small amount of solid alkali, and cooling to 30-50°C after the solid alkali dissolves. Then, 6-12% urea, a mixed solution of 9-15% BES-Na and a metal ion-soluble salt, 1-5% sodium p-aminobenzenesulfonate, 0.01-0.05% manganese dioxide, and 1-4% hydrogen peroxide are added. The mixture is rapidly stirred to obtain a loose, viscous system, and finally dried. The total mass percentage of all components is 100%. This invention also discloses a method for degrading the green, environmentally friendly, biodegradable, salt-resistant, superabsorbent resin, including preparing EDTA to a concentration of 0.01-0.1 mol / L. ‑1 The resin is crushed and then mixed with the salt solution. The mixture is stirred and heated to complete the degradation process.

The present invention relates to a wound dressing comprising an absorbent core, a hydrophobic nonwoven layer, and a hydrophilic nonwoven layer. The hydrophobic and hydrophilic nonwoven layers are joined by ultrasonic welding and form a pocket in which the absorbent core is enclosed. The absorbent core comprises an absorbent fiber material and a superabsorbent polymer. The wound dressing includes a fixation area. The fixation area comprises three cutting lines radiating from a single point, which pierce the wound dressing perpendicular to its surface. At least two of the cutting lines do not extend to an outer edge of the wound dressing. The hydrophobic and hydrophilic nonwoven layers comprise plastic fibers made of the same material.

A polyacrylic acid (salt)-based super absorbent polymer has a slip strain (%) of 12.5% or less after the polyacrylic acid (salt)-based super absorbent polymer is subjected to 30% swelling. The slip strain means a value at a time when a storage modulus rapidly decreases with an increase in strain when a change in the storage modulus is observed by increasing the slip strain of each sample from 0.01% to 100% using a rheometer under a frequency of 1 Hz and a temperature of 25° C. The superabsorbent polymer has an absolute value of a rate of change in slip strain at 30% and 70% swelling derived by Equation 1 of 0.04 or less, wherein Equation 1 is Rate of change in slip strain at 30% and 70% swelling=[{(slip strain at 70% swelling)−(slip strain at 30% swelling)} / 40].

The application provides a building curtain wall and a construction method and application thereof, and the building curtain wall comprises the following raw material components by weight: cementing material 100 parts, admixture 5-40 parts, additive 0.1-10 parts, superabsorbent polymer 0.1-5 parts, conductive polymer 0.1-10 parts, water 10-40 parts, aggregate 10-30 parts and electrode material 10-30 parts. The application adopts traditional cementing material-based building material to construct a building curtain wall with energy storage function, a self-luminous system based on the building curtain wall utilizes photoelectricity and thermoelectricity to generate electricity, and additional electricity from a power grid is not needed, a photoelectron system is based on solar power generation, a thermoelectron system effectively utilizes a large amount of waste heat generated in a photovoltaic cell power generation process, the whole power generation process does not involve carbon emission, and the electricity generated by the power generation system is stored in the building curtain wall and used for supplying power to the luminous system at night, so that energy is saved and consumption is reduced.

The present invention relates to a watch (1) comprising a watch case (2) comprising a humidity adjusting device (3) located inside the watch (2). According to the invention, the humidity regulating device (3) is in the form of a film made of at least one thermoplastic polymer filled with a superabsorbent polymer and a hygroscopic natural fiber, the film being configured such that the volume changes when water vapour is present inside the case (2).

Described herein is an absorbent article having an absorbent core. The absorbent core includes a superabsorbent polymer material and an auxiliary adhesive. The auxiliary adhesive includes from about 20% to about 70% of a first polymer and from about 30% to about 80% of a second polymer. The auxiliary adhesive has a Shear Viscosity at 10 (1 / s) at 230° C. of from about 300 mPa·s to about mPa·s.

The present invention is directed to an absorbent core for use in an absorbent article and an absorbent article comprising the same, the absorbent core comprising a top layer, a bottom layer, an intermediate layer disposed between the top layer and the bottom layer, a first absorption layer disposed between the top layer and the intermediate layer, the first absorption layer comprising first superabsorbent polymer particles "SAP1", and a second absorption layer disposed between the intermediate layer and the bottom layer, the second absorption layer comprising second superabsorbent polymer particles "SAP2", wherein the intermediate layer has at least one of: a SAP permeability no higher than about 1%at static condition as measured according to SAP permeability Test, and a SAP permeability no higher than about 25%at vibration condition for 10 seconds as measured according to SAP permeability Test, and wherein SAP1 is different from SAP2.

A multilayer structure having a polyolefin layer and a water-absorbing layer is provided. The multilayer structure may be in the form of a tubular structure and is particularly useful in optical fiber applications. A system and method for preparing micronized polymer pellets is also provided. The micronized polymer pellets include a polymer resin and particles comprising a superabsorbent polymer.

The present invention is related to a superabsorbent polymer, a method of manufacturing the same, and a foodstuff packaging material including the same. By adding a gallic acid group-containing polyphenol compound into a reaction composition, the level of polymerization and the stability of a carboxyl group-containing monomer in the polymerization can be increased, thereby decreasing amounts of low-molecular-weight extractives in the obtained superabsorbent polymer. The superabsorbent polymer not only can be safe and have an antibacterial property but also maintain excellent retention capacity and absorption capacity, and can be used as the foodstuff packaging material.

This utility model discloses an integrated drying and grinding machine for superabsorbent polymers, relating to the field of superabsorbent polymer processing technology. It includes a base assembly consisting of a base, a support platform, support rollers, and a first drive motor, and a drying assembly. The drying assembly is used to dry the resin. A grinding assembly is located at the top of the base, at the end of the support platform furthest from the first drive motor, and is used to grind the dried resin. This utility model achieves both drying and grinding of superabsorbent polymers by combining the drying and grinding assemblies. Furthermore, the cooperation of the central drying cylinder, the baffled drying cylinder, and the rotating drying cylinder enables the resin to be transported in an "S" shaped trajectory, effectively extending the resin's transport distance and ensuring effective drying. Simultaneously, the overall length of the drying assembly is relatively short, thus effectively reducing the equipment's footprint.

The present invention relates to an absorbent core for use in an absorbent article and an absorbent article comprising the same, the absorbent core comprising a liquid permeable top cover layer; a bottom cover layer; and an absorbent layer disposed between the top cover layer and the bottom cover layer, the absorbent layer comprising superabsorbent polymer particles; and wherein the top cover layer comprises pulp and has an MD tensile strength of at least about 12 N, where the top cover layer has a first MD wicking length at 3 minutes, and the bottom cover layer has a second MD wicking length at 3 minutes, as measured according to the wicking length test, where the first MD wicking length is at least about 70 mm, and the bottom cover layer has a second MD wicking length at 3 minutes, as measured according to the wicking length test. And is at least about 3 times the second MD wicking length.

Provided is a method for preparing superabsorbent polymer, which includes conducting first surface crosslinking of a base resin powder while raising the temperature to a first temperature, in the presence of a first surface crosslinking agent; conducting second surface crosslinking of the first surface crosslinked base resin powder at a second temperature. According to the method of the present technology, surface crosslinking strength of the resulting superabsorbent polymer is increased, thus enabling preparation of superabsorbent polymer having little or no decline in absorbency under load even after anti-caking agent treatment.

The present invention aims to provide a method for producing water-absorbent resin particles with suppressed coloration. [Solution] A method for producing water-absorbent resin particles, comprising a polymerization step of polymerizing a water-soluble ethylenically unsaturated monomer to obtain a polymer, wherein the polymer is maintained at a temperature of 125°C or lower from the time of the polymerization step until the end of the drying step.

The application provides a biochemical sample intelligent sealing transportation device, which solves the problem that the physical state of leaked biochemical samples cannot be changed in a reagent tube storage and transportation container, and the structure in the box is easily polluted and corroded. The application comprises an open-top box body and a box cover arranged on the top of the box body. An inner part of the box body is provided with a test tube storage space. A detachable test tube rack is arranged in the test tube storage space. A plurality of test tubes capable of being taken out and placed are arranged on the test tube rack. A detachable plug is arranged on the top of the test tube. A second partition plate is fixedly arranged on the inner side wall of the box cover. An array of plasmas is arranged at the bottom of the second partition plate. A storage box is fixedly arranged on the inner wall of the test tube storage space. The storage box is arranged below the test tube rack. The storage box is used for storing a powdery superabsorbent polymer. A discharge pipe is arranged at the bottom of the storage box. A fifth electromagnetic valve is arranged on the discharge pipe. The fifth electromagnetic valve is connected with a controller in control.