708 results about "Water soluble polymers" patented technology

Described herein are methods, compositions and articles of manufacture involving neutral conjugated polymers including methods for synthesis of neutral conjugated water-soluble polymers with linkers along the polymer main chain structure and terminal end capping units. Such polymers may serve in the fabrication of novel optoelectronic devices and in the development of highly efficient biosensors. The invention further relates to the application of these polymers in assay methods.

Methods, systems, and apparatuses for forming dissolvable cleaning products. The dissolvable cleaning products may be formed by forming a first component solution by mixing ingredients in a first mixer. The mixing may be suspended and the first component solution may be allowed to rest for a first holding period. A second component solution may be formed by mixing ingredients in a second mixer. The mixing may be suspended and the second component solution may be allowed to rest for a second holding period. The first and second component solutions may be mixed together and one or more of enzymes and preservatives and a water-soluble polymer may be added to form a final solution. Optionally one or more fragrances may be added. The final solution may be transferred to a mold and dried to a predetermined moisture content. The dried final solution may be cut into one or more shapes.

Formulations (e.g., solutions) comprising one or more water-soluble polymer(s), liposomes, and an aqueous carrier, are provided. The provided solutions are useful for rinsing, and / or immersing therein, a contact lens and / or in the treatment of ocular discomfort, for example, an ocular discomfort associated with a contact lens. Also provided are kits comprising the solution and a contact lens; articles-of-manufacturing comprising the solution and configured for dispending the solution; and methods utilizing the solution.

Provided in the present invention are a high-temperature-resistant filtrate reducer, a water-based drilling fluid and the use of the high-temperature-resistant filtrate reducer in drilling engineering in high-temperature subsurface environments. The filtrate reducer comprises carboxymethyl cellulose and a water-soluble polymer containing epoxy, and an open-loop coupling reaction of carboxyl and epoxy groups in high-temperature environments is utilized to induce in-situ self-crosslinking of carboxymethyl cellulose in high-temperature deep downhole environments, so that the filtrate loss reduction performance of the filtrate reducer at high temperatures is remarkably improved.

The invention discloses a hydrophobic coating with high corrosion resistance and long service life for an offshore photovoltaic support and a preparation method of the hydrophobic coating, and belongs to the technical field of surface protection of the offshore photovoltaic support. The concrete is prepared by mixing the following raw material components in parts by weight: 100 parts of a silicon-aluminum ingredient, 10-30 parts of an alkali activator, 1-2 parts of a water reducing agent, 0.3-1 part of a water-soluble polymer, 1-5 parts of an expanding agent, 0.5-2 parts of a surface modifier and 40-60 parts of water. According to the invention, corrosion ions in the marine environment are effectively prevented from invading, efficient protection of the offshore photovoltaic support and prolonging of the service life are realized, and the later maintenance cost is reduced.

The invention discloses a double-phase-change flexible film for solar power generation and a preparation method of the double-phase-change flexible film. According to the method, water-soluble polymers such as polyvinyl alcohol, polyvinylpyrrolidone, polyethylene oxide and the like are used as flexible base materials and are physically blended with vanadium dioxide, freeze drying is performed, then phase change heat storage materials such as fatty acid, alkane, polyethylene glycol, paraffin and the like are subjected to vacuum impregnation adsorption, and the double-phase-change flexible film for solar power generation is synthesized. The double-phase-change flexible film synthesized by the method can realize double phase change in the same phase change temperature zone, has a selective intelligent reflection function on near-infrared light before and after phase change, and has relatively high photo-thermal conversion efficiency, and the synthesis method is simple, safe and easy to prepare. Wide application prospects are realized in the aspects of solar power generation, electronic device heat management, intelligent infrared stealth and the like.

A pressure-relief valve includes a main body equipped to be fastened to a flexible package material. The main body has at least one through hole forming a passage through the main body. A valve membrane lies, on a package side, against the main body in a region around the hole, and a sealing liquid between the main body and the valve membrane. The valve has a water-soluble polymer, whereby at least one component of the valve, for example the main body, is made of a polymer composition that includes a water-soluble polymer.

The invention provides a flexible composite electromagnetic shielding film which is of a layered composite structure, an aluminum foil or a copper foil which has a grounding function and focuses on medium and low frequency electromagnetic shielding protection is adopted as a good electronic conductor film layer A, and a polyester film or an ultra-high molecular weight polyethylene microporous film is adopted as a high-strength carrier film layer B; a composite material electromagnetic shielding coating C emphasizing high-frequency protection is formed on the surface of A or B in a coating mode, the thickness of the electromagnetic shielding coating C ranges from 30 micrometers to 600 micrometers, the porosity ranges from 15% to 45%, the electromagnetic shielding coating C comprises single-walled carbon nanotubes and multi-walled carbon nanotubes, and the single-walled carbon nanotubes and the multi-walled carbon nanotubes form a three-dimensional conductive network. The hard carbon micro powder and the ferromagnetic submicron powder have good wave absorbing performance, and the water-soluble polymer adhesive, the surfactant and the nano rubber are added; the film layers or the coatings are bonded together through a film layer D with a bonding function; when the test frequency is between 100MHZ and 25GHZ, the absolute value of the shielding effectiveness SE of the flexible composite electromagnetic shielding film is greater than 40dB.

An article comprising a composite body, wherein the composite body can comprise ceramic particles distributed within a binder. The binder can include a cross-linked polymer of a first polymer and a second polymer wherein the first polymer is a water-soluble polymer, and the second polymer is a water-insoluble polymer. The composite body can have a water stability factor (WS) of at least 70%, and may be adapted for adsorbing and desorbing lithium ions. The composite body can further have a high bulk compression strength of at least 70 N.

Proposed is a method for forming an electroless plating electrode through selective cross-linking layer formation using a laser, specifically, the method includes forming a selective cross-linking layer by sintering a water-soluble polymer thin film layer, which is formed on a substrate by coating, to form a patterned shape thereon using a laser, followed by forming a precise metal pattern by electroless-plating the selective cross-linking layer with copper, nickel, or other metals. The method offers a simple manufacturing process, cost efficiency, and flexibility in manufacturing without being limited by the shape of a substrate, thereby patterns may be formed on various substrates. A catalyst material for electroless plating is mixed with a polymer material to directly cross-link the substrate. Thus, durability is improved but also an electrode may be formed with a substrate by electroless plating simply and in a short time due to use of only a single material.

The invention discloses antistatic medical gauze and a preparation method thereof, and relates to the technical field of medical gauze. The antistatic medical gauze comprises the following raw materials in parts by mass: 60-80 parts of cotton fibers, 1-5 parts of an antistatic agent, 5-15 parts of a water-soluble polymer and 0.5-1 part of an antibacterial agent. Compared with the traditional technology that the antistatic effect is transient and is easily influenced by environmental factors, the invention realizes long-acting and stable charge neutralization capability by introducing a specific micromolecule antistatic agent (such as a compound shown in the formula 1) and combining a moisture absorption conductive mechanism, an ionization effect and surface energy regulation. The trend shows that the static dissipation is faster and the effect is lasting, the problems of potential safety hazards and dust adsorption caused by charge accumulation are effectively avoided, and the defect that the effect of an antistatic agent in the prior art is not lasting is overcome.

This provides an improved dissolvable solid article with a specific aspect ratio. Such dissolvable solid article has a multilayer structure comprising two or more flexible, dissolvable, porous sheets, while each of which comprises a water-soluble polymer and a surfactant and is characterized by a Percent Open Cell Content of from 80% to 100% and an Overall Average Pore Size of from 100 μm to 2000 μm. The multilayer dissolvable solid article is characterized by a maximum dimension D and a minimum dimension z; and wherein the ratio of D / z ranges from 1 to 10.

Embodiments of the present disclosure are directed to a coated substrate comprising a water swellable coating applied to the substrate. Based on the total weight of the water-swellable coating, the water-swellable coating comprises 30% to 90% by weight of a plastisol binder and 10% to 70% by weight of a superabsorbent polymer. The plastisol binder comprises from 1 wt% to 50 wt% of a water soluble polymer and from 50 wt% to 99 wt% of a plasticizer, based on the total weight of the plastisol binder.

The invention relates to a preparation method of a water-in-water nanocellulose Pickering emulsion with uniform and controllable size, which comprises the following steps: S1, preparing an aqueous two-phase system, and respectively preparing a water-based continuous phase and a dispersed phase of a water-soluble polymer with compatible type, concentration and molecular weight; s2, preparing an aqueous continuous phase suspension containing 5%-8% of cellulose nanocrystal (CNC) particles; s3, assembling a micro-channel device which comprises a two-water-phase two-channel angle-designable feeding pipe, a length-dependent composite pipe for regulating and controlling the size of a dispersed phase, a lead-in pipe for introducing the particle suspension and the composite pipe according to a set angle, and a spiral pipe for forcibly assembling and optimizing particles on a two-phase interface and adaptively regulating and controlling the length / screw pitch / diameter; s4, preparing a water-in-water emulsion with stable CNC particles; according to the method, two-water-phase compounding and particle interface assembling are strengthened through micro-channel design, the flow speed and the air pressure interruption time are regulated and controlled, accurate control over the emulsion size and the droplet distance is achieved, and the common problems that the emulsion size is not uniform and the particle coverage degree is not high are solved.

The invention discloses an etching solution and a preparation method and an etching method thereof, and belongs to the technical field of microelectronics and display panel manufacturing. The etching liquid comprises the following components in percentage by mass: 50-70% of phosphoric acid, 5-30% of acetic acid, 5-15% of nitric acid, 0.1-0.5% of a water-soluble polymer, 0.05-0.3% of a boron-containing compound, 0.05-0.5% of an etching control agent and the balance of water. The water-soluble polymer is selected from one or more of water-soluble polymers containing a hydroxyl group, an amide group, an ether bond or a pyrrolidone group. The etching solution contains a specific water-soluble polymer, a protective layer can be formed on the surface of the photoresist, attack of high-concentration acid to the etching solution is effectively inhibited, and the cracking problem is avoided; meanwhile, through the synergistic effect of the boron-containing compound and the azole etching control agent, the etching rate, the slope angle and the key size loss can be accurately controlled, and therefore the excellent etching morphology meeting the requirement is obtained.

This coating liquid contains: aerogel particles; a water-soluble polymer having a hydrophobic group; a binder resin; and a liquid medium, wherein the water-soluble polymer comprises a cellulose based resin having an alkyl group having 6 to 26 carbon atoms. The coating liquid is capable of forming a coating film having a high filling rate of aerogel particles and an excellent film strength and is excellent in terms of the dispersibility of aerogel particles.

The invention provides a polyurethane polishing pad and a preparation method thereof, the polyurethane polishing pad comprises a polyurethane mixture, the polyurethane mixture comprises a polyurethane prepolymer, a curing agent and a heat dissipation filler; in the polyurethane mixture, the mass percent of the polyurethane prepolymer is 50%-90%, the mass percent of the curing agent is 10%-30%, and the mass percent of the modified filler is 1%-10%; the water-soluble polymer compound system comprises polyvinylpyrrolidone, carboxymethyl cellulose and polyethylene glycol, the water-soluble polymer compound system is characterized in that the polyvinylpyrrolidone and the carboxymethyl cellulose are grafted to form a grafted copolymer, the grafted copolymer is compounded with the polyethylene glycol, and the mass ratio of the polyvinylpyrrolidone to the carboxymethyl cellulose in the grafted copolymer is 10: (1-2). The heat dissipation filler is added into the polyurethane, so that an effective heat dissipation effect can be achieved, the polishing uniformity is prevented from being affected by overheating of the polishing pad and the wafer, and the surface temperature of the polished wafer is moderate.

The invention relates to the technical field of water-soluble polymers, in particular to a preparation method of a low-temperature-resistant water-in-water emulsion, which comprises the following steps: mixing acrylamide, an anionic monomer, a hydrophobic monomer, a dispersing agent, a chain transfer agent and water, adjusting the pH value, mixing with a stabilizer, introducing nitrogen, sequentially adding an oxidizing agent and a reducing agent to initiate a polymerization reaction, and cooling to obtain the low-temperature-resistant water-in-water emulsion. Quickly adjusting the stirring speed when the viscosity of the mixed system is increased, always keeping vortex at the center of the liquid level in the reaction process, and adjusting the stirring speed to continue the reaction after the polymerization system forms emulsion drops; and when the temperature of the polymerization system begins to reduce, adding an excessive amount of a reducing agent into the reaction system to continue the reaction, and obtaining the low-temperature-resistant water-in-water emulsion after the reaction is finished. The emulsion has the advantages of low apparent viscosity, high dissolution speed, small environmental damage, low temperature resistance and the like.

The invention relates to the technical field of bioengineering, in particular to an exosome separation material with CLIKKPF as a ligand and a preparation method of the exosome separation material. A novel exosome affinity medium is developed by utilizing the Ca < 2 + > dependency recognition characteristic between CLIKKPF and PS, specific adsorption of the exosome is realized by virtue of a water-soluble polymer and a brush-like structure thereof in combination with polypeptide CLIKKPF, and meanwhile, rapid separation of the target exosome is realized by utilizing nano magnetic beads as supporting particles.

A salt lake lithium extraction electrode, a preparation method therefor and the use thereof. The preparation method comprises the following steps: (1) mixing an active substance, a conductive agent, a non-aqueous binder and a water-soluble polymer having a molecular weight of 100-800 with a solvent to obtain a paste; (2) coating a current collector with the paste to obtain an electrode, and immersing the electrode in water for soaking treatment; and (3) immersing the electrode subjected to the soaking treatment into an oxidizing agent solution, carrying out an oxidation reaction, and then immersing the electrode in water to terminate the oxidation reaction, so as to obtain the salt lake lithium extraction electrode. Adding the water-soluble polymer into the paste of the salt lake lithium extraction electrode and removing the water-soluble polymer by means of soaking enable nanoscale pores to be formed in the electrode; the removal of the water-soluble polymer can increase the specific surface area of the electrode, and in addition, the nanoscale pores also increase the structural stability of the electrode.

Disclosed in the present invention are an aqueous triggered controlled-release saline-alkali soil conditioner and a preparation method therefor. The aqueous triggered controlled-release saline-alkali soil conditioner comprises agent A. The agent A comprises a water-soluble polymer and controlled-release suspended particles. The controlled-release suspended particles comprise alginate / anti-reverse regulator composite particulates. The alginate / anti-reverse regulator composite particulates are obtained by sequentially subjecting an alginate to two-step gel cross-linking by means of a cationic anti-reverse regulator and a high-valent metal ion-containing cross-linking agent. In the present invention, the alginate used as a main material is subjected to charged regulator-based high-speed dispersion for primary gelation and high-valent metal-based secondary gelation, thereby preparing a micron-nano powder and suspension, and incorporating a solvable organic polymer material, the functions of graded release and intelligent regulation of a product are achieved. The incorporation of an organic acid and a phosphoric acid material can not only prevent a micro-irrigation device from scaling but can also achieve triggered controlled-release of the material on demand and in a timely manner, thereby achieving the effects of multi-particle-size dispersion and precise release of the product in soil.

The invention discloses a light epoxy resin-based wave-absorbing material and a preparation method thereof, and the light epoxy resin-based wave-absorbing material comprises the following components in parts by weight: 100 parts of epoxy resin molding compound, 1-6 parts of conductive filler, 20-40 parts of water-soluble polymer and 1-3 parts of foaming agent. The composition is uniformly dispersed in a ball mill, and the closed-cell foaming material with adjustable density is obtained by chemical foaming. And a Fe3O4 / PEDOT wave-absorbing agent is loaded in the holes in situ, so that a multi-layer structure design of'weak current-magnetism-strong current 'is realized in the integrally uniform foaming material. The epoxy resin-based electromagnetic shielding material has the advantages of low density, high electromagnetic shielding, high wave absorbing efficiency, excellent mechanical properties and the like.

The invention discloses a sportswear fabric and a preparation method thereof.The sportswear fabric is of a double-layer structure and comprises a moisture guiding layer, the moisture guiding layer is located on the outer layer and composed of special-shaped-section nylon yarn of a skin-core structure, the skin-core structure comprises a water-soluble polymer skin layer and a nylon core layer, and the section of the skin-core structure is provided with grooves; the skin attaching layer is located on the inner layer and composed of blended nylon yarn subjected to sanding treatment, and the blended nylon yarn comprises common nylon yarn and anti-static nylon yarn; the single-fiber fineness of the yarn of the moisture guiding layer is smaller than that of the yarn of the skin attaching layer, and the single-fiber fineness ratio is smaller than or equal to 1: 2, so that sweat is unidirectionally guided to the moisture guiding layer from the skin attaching layer. According to the sportswear fabric and the preparation method thereof, the super-soft texture, the superconductive quick-drying performance and the antistatic performance of the sportswear fabric are improved through a specific fiber material and a fabric structure.

The present invention aims to provide a composition with higher ability to enhance early strength development compared to conventional compositions. The present invention relates to an aluminosilicate-containing composition containing: an aluminosilicate; and a water-soluble polymer, the aluminosilicate-containing composition further containing at least one of an amine having a molecular weight of not more than 1,000 or a metal compound.

The present invention is in the field of cleaning composition. Particularly it relates to a unit dose laundry article having a cleaning ingredient for providing improved cleaning performance. There is hence a need to provide a 'eco-friendly' detergent product in the form of a flexible solid laundry article, which provides cleaning efficacy at par with conventional detergent composition, is easy to use without impacting the dissolution profile of the article. The present invention provides a flexible solid unit dose laundry article comprising a cleaning ingredient, water soluble polymer and a water-insoluble disintegrant that provides improved cleaning performance. The flexible solid laundry article is 'eco-friendly' and dissolves quickly in water yet does not stick to each other during storage and is easy to use.

Provided is a method for producing a biosignal measurement electrode including: preparing a conductive polymer including a coil-type chain structure having a coil shape; providing a sugar alcohol and a water-soluble polymer to the conductive polymer to produce an electrode source including an expanded chain structure in which the coil-type chain structure is expanded and linearly arranged; forming a coating layer by providing the electrode source on a substrate; and producing the biosignal measurement electrode by annealing the coating layer.

The invention belongs to the technical field of textile, and particularly discloses a porous polyester fiber and a preparation method thereof.The preparation method comprises the following steps that S1, coffee charcoal powder, bamboo charcoal powder and coconut shell charcoal powder are mixed according to the mass ratio of 1: (0.5-2): (0.1-1) to serve as an antibacterial agent; s2, mixing the antibacterial agent, polyethylene glycol terephthalate and a water-soluble polymer to obtain a blend; s3, the blend is sliced, granulated and subjected to melt spinning, and the polyester fiber is prepared; and S4, washing the polyester fiber with alcohol at room temperature, washing with hot water, and drying to obtain the porous antibacterial polyester fiber. Coffee charcoal powder, bamboo charcoal powder and coconut shell charcoal powder are compounded to form an antibacterial agent, then the antibacterial agent is mixed with polyethylene glycol terephthalate and a water-soluble polymer, slicing granulation and melt spinning are conducted, then the water-soluble polymer is dissolved out through alcohol washing and hot water washing, and the polyester fiber with the antibacterial function and the porous structure is obtained.

A method of functionalising an elastomeric material, such as a rubber particle, is provided. The method comprises the functionalisation of an elastomeric material through the use of an ionic liquid based composition, which comprises a water soluble polymer, a cationic silicate component, and a salt of a vulcanization accelerator, together with a zinc compound, sulphur, and an accelerator. Rubber particles, for example particles from recycled rubber products, functionalised according to the method disclosed can successfully be utilised in virgin rubber masterbatches at concentrations not previously possible.

The invention provides carbon paper for a fuel cell and a preparation method of the carbon paper, and relates to the technical field of fuel cells, long carbon fibers of 6 mm and short carbon fibers of 3 mm are selected, mixed and added into a PVA-PVP composite water-soluble polymer solution, dried after being soaked and coated, and continuously mixed with elastic fibers and reinforced fibers to prepare slurry, and the slurry is formed, coiled and cut to prepare the carbon paper. During the period, the carbon fibers are subjected to surface treatment, and the technical means of polymer coating and multi-fiber mixing are utilized, so that the finally prepared carbon paper has higher strength, air permeability and uniformity.

The invention provides a flexible conductive porous elastomer with a pressure sensing function as well as a preparation method and application of the flexible conductive porous elastomer, and relates to the technical field of functional sensing materials. The preparation method comprises the following steps: carrying out first mixing on an elastomer rubber material, a conductive filler and an auxiliary agent to obtain a first mixed material; performing second mixing on the first mixing material, a first template agent (water-soluble inorganic salt) and a second template agent (water-soluble polymer) to obtain a second mixing material; carrying out hot-pressing vulcanization on the second mixed material to obtain a molded part; and carrying out water washing and pore forming on the molded part, and then drying to obtain the flexible conductive porous elastomer with the pressure sensing function. The prepared flexible conductive porous elastomer with the pressure sensing function has the advantages of high sensitivity, wide detection range, good rebound resilience and high stability, so that the increasing requirements of different fields on flexible pressure sensors are met.