274 results about "Superabsorbent polymer" patented technology

The present invention relates to a bio-based and biodegradable superabsorbent polymer (SAP) comprising sodium alginate, modified cellulose, at least one activation agent, and at least one crosslinking agent. The SAP exhibits a high bio-based content of up to 93% and fulfills industrial composting standards such as EN 13432. The crosslinking reactions are performed under mild conditions, including ambient temperatures and neutral to alkaline pH, eliminating the need for high thermal energy. The resulting SAP granules demonstrate excellent liquid absorption performance, rapid swelling, high retention, and no observed toxicity or skin sensitization. The invention provides a sustainable alternative to petroleum-based SAPs for use in hygiene products, agriculture, and other disposable applications.

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.

This invention relates to the field of cement materials technology, specifically to an anti-carbonation early-strength agent for hypersulfate cement and its preparation method. The anti-carbonation early-strength agent comprises: a modified core formed by a water-soluble silicate and a water-storing superabsorbent polymer; an aluminum- and calcium-containing layered bimetallic hydroxide intermediate layer coating the outer surface of the core; and a silicon and / or aluminum active nanomaterial shell layer coating the outer surface of the intermediate layer, thereby forming a Si / Al@Ca / Al-LDHs@modified core dual-core-shell structure. The anti-carbonation early-strength agent of this invention effectively solves the problems of long setting and hardening time, low early strength, and easy carbonation inherent in traditional hypersulfate cement.

The invention discloses a plugging particle, a preparation method, application and a grouting material, the plugging particle is of a core-shell structure and comprises a force-bearing inner core, the force-bearing inner core is coated with an expansion functional layer, and the expansion functional layer is coated with a delayed hydrogel outer film layer; wherein the inner core is made of one or more of quartz sand, kaolin and inorganic fibers; the expansion functional layer comprises modified bentonite and a super absorbent polymer; the delayed hydrogel outer film layer comprises a water-soluble film; the particle size of the blocking particles is 0.5 to 2.5 mm; through material structure optimization and response mechanism design of the functional plugging particles and the special grouting liquid, the automatic plugging function in the grouting process without mechanical triggering, a chemical expanding agent and a complex plugging device is achieved; and the method is suitable for scenes with high requirements on plugging precision, construction efficiency and structural stability in complex rock mass crack grouting engineering.

The utility model relates to the technical field of hygienic products, in particular to a leakage-proof hygienic product which comprises a skin-friendly surface layer, a flow guide layer, an absorption layer and a liquid-tight bottom film which are sequentially arranged from top to bottom in the thickness direction. The diversion layer and the absorption layer are positioned in a suspension structure formed by the skin-friendly surface layer and the liquid-tight bottom membrane; the absorption layer is single-layer or multi-layer super absorbent resin absorbent paper and comprises a plurality of absorption areas with the super absorbent resin content gradually increased in a gradient mode from the center to the edge; the hygienic product is provided with a flow guide groove structure penetrating through the skin-friendly surface layer, the flow guide layer and the absorption layer, and the flow guide groove structure is arranged in the center area of the hygienic product and does not extend to the edge of the hygienic product. The flow guide groove structure comprises a first flow guide groove located in the central area of the hygienic product and distributed in the length direction and a plurality of second flow guide grooves communicated with the first flow guide groove. And the plurality of second diversion trenches are symmetrically distributed along the first diversion trench. The hygienic product provided by the utility model can effectively prevent side leakage and rear leakage.

The present invention relates to a method of preparing a superabsorbent polymer. More particularly, the preparation method performs a polymerization reaction of a monomer in the presence of an aqueous dispersion of hydrophobic particles, thus enabling the preparation of a superabsorbent polymer having a high surface tension and an improved absorption rate without deterioration in absorption properties.

To provide an absorbent article in which it is easy to recognize that the absorbent article is a product suitable for wearing for a long time and which can be used by a user without anxiety.SOLUTION: An absorbent article (1) includes an absorbent core (11) in which an average basis weight of a superabsorbent polymer is equal to or greater than 270 g / m2. The absorbent article includes a first colored region (51) and a second colored region (52) in a case where the diaper (1) in a developed and stretched state is viewed from a non-skin side in a thickness direction, a total area of the first colored region (51) being equal to or greater than 50% of an area of the absorbent article (1). When 2071U, 2072U, 2073U, etc. in a color sample of PANTONE are represented as first color group, the first colored region (51) is a region of a color corresponding to any of the first color group, When 100U, 101U, 102U, etc. in the color sample of PANTONE are represented as a second color group, the second colored region (52) is a region of a color corresponding to any of the second color group.SELECTED DRAWING: Figure 1

The process for producing and using polymeric Hydrocells for production of atmospheric water using a superabsorbent polymer derived from alkaline hydrolysis of the polyacrylonitrile (PAN). The Hydrocell adsorbs up to 80% of its weight in atmospheric water under ambient conditions and releases this water when heated to less than 100° C. using renewable energy sources, such as solar energy. This low-temperature operation allows for repeated adsorption and desorption cycles lasting years without degradation. Multiple Hydrocells can be arranged into Hydrobatteries with a surface area greater than 2 m2, capable of adsorbing several kg of water per day. The Hydrocells offer a sustainable and safe solution for producing potable water free of toxic chemicals and pathogenic microorganisms in regions with limited water resources. By drawing water from the vast atmospheric reservoir containing over 13,000 km3, this can help prevent deaths caused by the consumption of contaminated water.

A polyacrylic acid (salt)-based super absorbent polymer has a T2 relaxation time of 1.85×10−5 seconds or less, as derived by exponential fitting of the TD-NMR measurement results of the super absorbent polymer through regression analysis using the following Equation 1:y=y⁢0+A×e-(xt)wherein, y represents a signal intensity obtained through TD-NMR analysis, x represents an echo time determined from specified experimental parameters: first duration; last duration; and a data point, t represents a T2 relaxation time derived by exponential fitting, A represents a signal intensity value derived by exponential fitting, and y0 represents an offset constant derived through regression analysis.

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.

This disclosure relates to a superabsorbent polymer and a method for preparing the same. More specifically, this disclosure relates to a superabsorbent polymer having reduced extractable content without degrading absorption performance, and a method for preparing the superabsorbent polymer by polymerization in the presence of a foaming agent and a carboxylic acid additive with a specific structure.

An absorbent article includes a front waist edge, a rear waist edge longitudinally opposing the front waist edge, and a longitudinal axis extending from a midpoint of the front waist edge to a midpoint of the rear waist edge. The absorbent article comprises a liquid permeable topsheet, a liquid impermeable backsheet, and an absorbent core disposed at least partially intermediate the topsheet and the backsheet. The absorbent core comprises a first continuous channel and a second continuous channel, each substantially free of the superabsorbent polymers and at least partially oriented in the longitudinal direction of the absorbent. The first and second channels each have lateral widths parallel to the lateral axis. A profile of the lateral widths of each channel over a longitudinal length of at least 50 mm of the channel taken along the longitudinal axis is substantially constant. The average lateral width of the first channel differs from an average lateral width of the second channel.

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.

Provided is an absorbent having high absorbency that can instantaneously absorb a large amount of body fluid. A composite absorbent (4) according to the present invention is characterized by being a composite absorbent for absorbing body fluid, the composite absorbent comprising: a high-molecular absorbent having a continuous skeleton and a continuous void, the high-molecular absorbent introducing moisture into the continuous skeleton and then into the continuous void when absorbing moisture; and a superabsorbent polymer.

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 disclosure aims to provide a method for manufacturing a superabsorbent recycled polymer that can suppress the adhesion of particles to each other, efficiently dry each particle, and have excellent whiteness. A method for manufacturing a superabsorbent recycled polymer regenerated from a used superabsorbent polymer, characterized by including: a dehydration step in which the used superabsorbent polymer is dehydrated to form a dehydrated superabsorbent polymer; a particle group attachment step in which a particle group of a superabsorbent polymer is attached to the dehydrated superabsorbent polymer to form a superabsorbent polymer to which the particle group is attached, and the particle group is caused to absorb moisture held by the dehydrated superabsorbent polymer; and a drying step in which the superabsorbent polymer to which the particle group is attached is dried to form the superabsorbent recycled polymer.

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).

The present invention relates to a superabsorbent polymer composition and a method for producing the same, and more particularly to a superabsorbent polymer composition having deodorizing properties and a method for producing the same.

The present disclosure relates to a super absorbent polymer having a high water content and a method for preparing the same. The super absorbent polymer according to the present disclosure has a relatively high water content compared to a conventional one but has no degradation in absorption-related physical properties, and thereby can be used in various fields.