443 results about "Anionic polymers" patented technology

The invention discloses an anti-scale cross-linked polymer fracturing fluid and a preparation method thereof, and relates to the technical field of petroleum fracturing fluids. When the anti-scale cross-linked polymer fracturing fluid is prepared, allylamine hydrochloride and epoxy chloropropane react to prepare a double-bond chlorinated intermediate; reacting the double-bond chlorinated intermediate with lauramidopropyl dimethylamine to prepare a cationic monomer; copolymerizing a cationic monomer and acrylamide to prepare a cationic polymer; the preparation method comprises the following steps: reacting L-lysine with formaldehyde and phosphorous acid to prepare phosphoric acid modified lysine; reacting the phosphoric acid modified lysine with allyl glycidyl ether to prepare a phosphoric acid modified monomer; acrylamide and an anionic monomer are copolymerized to prepare an anionic polymer; the anionic polymer and the cationic polymer are dissolved in water to prepare the anti-scale cross-linked polymer fracturing fluid. The anti-scale cross-linked polymer fracturing fluid prepared by the invention has the advantages of scale prevention, good temperature resistance, good shear resistance and self-crosslinking.

To provide a water-soluble chelating polymer that can rapidly trap a trace amount of heavy-metal ions to reduce the amount of heavy-metal ions to a ppm level or lower in a short time.Use a water-soluble chelating polymer comprising an anionic polymer having a carboxy group, a sulfonate group and / or a sulfate group bonded through an ionic bond to a chelating functional group having a cationic functional group, wherein the water-soluble chelating polymer contains 0.2 to 6 mmol / g of the chelating functional group and has a weight-average molecular weight in the range of 30,000 to 1,000,000.

The invention belongs to the field of catalyst preparation, and relates to a preparation method and application of a novel hydrocarbon isomerization catalyst. The preparation method comprises the following steps: firstly, preparing a metal precursor, wherein the metal precursor can be prepared by loading a metal species in a mesoporous silica channel or interacting the metal species with an anionic polymer; then adding the precursor into an SAPO-11 synthesis system containing a phosphorus source, an aluminum source, a silicon source and a structure-directing agent, and carrying out hydrothermal or dry glue water vapor assisted crystallization; and finally, washing, drying and roasting the crystallized product to obtain the hierarchical porous SAPO-11-based metal catalyst with highly dispersed metal species. The method provided by the invention successfully realizes simultaneous modulation of the dispersity of metal species and the pore structure property of SAPO-11, and effectively improves the activity and isomer selectivity of the catalyst in a hydrocarbon skeletal isomerization reaction; the catalyst can be used for improving the octane number of gasoline, the condensation point of diesel oil, the viscosity-temperature performance of lubricant base oil, the freezing point of biological aviation kerosene and the like.

The invention relates to the technical field of pharmaceutical preparations, in particular to a multiple nano emulsion adjuvant and a preparation method thereof. The multiple nano emulsion adjuvant is prepared from 2.73 to 6.37 g of an oil phase matrix based on 100 g of a raw material system, 0.10 to 0.25 g of a sterol compound; 0.212 to 0.424 g of a nonionic surfactant; 0.00050 to 0.00200 g of a triterpenoid saponin type active adjuvant; 0.010 to 0.020 g of an anionic polymer modifier; 0.005 to 0.015 g of a cationic polymer modifier; 70-90 g of a buffer solution; the total mass of the raw materials is 100 g. The nano emulsion adjuvant prepared by the invention can be stored for 6 months at 2-8 DEG C under a low sterol condition, the particle size change does not exceed + 5%, no crystallization or layering is generated, and the stability of the active adjuvant is remarkably improved.

A new polyelectrolyte multilayer coated proton-exchange membrane for electrolysis and fuel cell applications has been developed for electrolysis and fuel cell applications. The polyelectrolyte multilayer coated proton-exchange membrane comprises: a cation exchange membrane, and a polyelectrolyte multilayer coating on one or both surfaces of the cation exchange membrane. The polyelectrolyte multilayer coating comprises alternating layers of a polycation polymer and a polyanion polymer. The polycation polymer layer is deposited on and is in contact with the cation exchange membrane. The top layer of the polyelectrolyte multilayer coating can be either a polycation polymer layer or a polyanion polymer layer.

The invention provides a foam stabilizer raw material system, a method for preparing a nano foam stabilizer, the nano foam stabilizer and application. The raw material system comprises inorganic nanoparticles, an organic monomer, an initiator, a catalyst and a hydrophobic modifier, wherein the organic monomer has an electrically neutral hydrophilic group. By applying the technical scheme of the invention, the foam stabilizer prepared by the system is composed of nanoparticles, the nanoparticles have hydrophobic groups and can generate hydrophobic interaction with the tail part of a foaming agent, and the particles also have electrically neutral hydrophilic polymer groups, so that on one hand, the foam stabilizer can play a role in temperature resistance and salt resistance; and on the other hand, compared with some anionic polymers, such as a 2-acrylamido-2-sodium methylpropanesulfonate polymer, charge repulsion with a surfactant head group can be reduced or avoided, the adsorption effect of the nanoparticles on a gas-liquid interface can be promoted, and the stability of the foam can be improved.

The invention relates to the technical field of microcapsules, provides a magnetic microcapsule capable of preventing particle sedimentation, a preparation method of the magnetic microcapsule and a magnetic film, and aims to solve the problems of low writing smoothness and poor trace durability due to particle sedimentation and aggregation in the prior art. The magnetic microcapsule comprises a wall material and a core material, the wall material is a mixture comprising an anionic polymer and a cationic polymer, and the core material is a mixture comprising magnetic particles, non-magnetic particles, an oily solvent and a suspension stabilizer; the suspension stabilizer comprises any one or more of phthalic ester, polyamide wax, polysiloxane, sorbitan oleate, sorbitan monostearate, silicon dioxide, magnesium aluminum silicate and magnesium lithium silicate; according to the invention, magnetic particles and non-magnetic particles can be prevented from settling and gathering, and writing fluency and trace durability are ensured.

The invention discloses a phosphogypsum harmless treatment system which comprises a phosphogypsum conveying belt scale, a moisture content detector, a phosphogypsum storage bin, a powder bin, a powder conveyor, an anionic polymer liquid bin, anionic polymer liquid conveying equipment, a water distribution device, a spraying device, a stirrer and a control module. According to the present invention, the mixing ratio can be intelligently and automatically adjusted and controlled according to the initial water content of phosphogypsum, and the amount of the powder material, the amount of the anionic polymer liquid and the amount of the water are output; the powder, the anionic polymer liquid and the water diluent cooperate with one another, so that harmless treatment of the ardealite is realized; the acidity of the ardealite is reduced, the pH value is increased, the content of water-soluble fluorine and total phosphorus is reduced, the industrial solid waste standard is met, and harmless treatment of the ardealite with the annual yield of 1 million tons is achieved.

The invention discloses a retarder for delaying cement setting time and a preparation method thereof, and belongs to the field of cement admixtures. The retarder is anionic polymer modified chitosan, and the preparation method comprises the following steps: (1) fully dissolving chitosan in a weak acid solution to obtain a chitosan solution; (2) fully dissolving an anionic polymer in a solvent to obtain an anionic polymer solution; and (3) adding the anionic polymer solution into the chitosan solution, fully stirring, carrying out electrostatic adsorption reaction, and centrifuging, washing, drying and crushing after the electrostatic adsorption reaction is finished to obtain the anionic polymer modified chitosan. Chitosan is modified through electrostatic adsorption of an anionic polymer to form a compound, the compound is added into cement, and the coagulation time of the cement is prolonged by utilizing the complexing action of functional groups of the compound on calcium ions and the surface adsorption action on cement particles, so that the construction operability is favorably improved; and the preparation process is simple, and the cost is low.

To provide an anisotropic conductive film which exhibits low temperature quick curability, and good adhesive strength and connection reliability, and can be stably slit in a narrow width.SOLUTION: An anisotropic conductive film has such a structure that a radical-polymerizable conductive particle-containing resin layer is laminated on a radical-polymerizable / anionic polymerizable insulating resin layer. The insulating resin layer contains: a radical polymerization initiator containing a film-formation component containing two kinds of phenoxy resins having different molecular weights, a radical-polymerizable component containing a first acrylic compound, an anionic polymerizable component containing an epoxy-based compound and an organic peroxide having a one-minute half-life temperature of 125°C or lower; and an anionic polymerization curing agent containing an organic acid hydrazide compound having a melting point of 160°C or lower. The conductive particle-containing resin layer contains a radical polymerization initiator containing a film-formation component containing a third phenoxy resin, a radical-polymerizable component containing a second acrylic compound, conductive particles and an organic peroxide having a one-minute half-life temperature of 125°C or lower.SELECTED DRAWING: Figure 1

The present invention relates to novel microspheres using an anionic polymer and a preparation method therefor. The present invention provides a novel preparation method for and an optimal formulation of microspheres which are useful for the delivery of cationic drugs, are less toxic and biocompatible, and can deliver drugs to microvessels. The novel preparation method according to the present invention enables industrial mass production of microspheres of a specific size by improving the yield of microspheres of a desired size through size distribution adjustment of microsphere particles.

Proton exchange membranes are described. The proton exchange membrane includes: a reinforcing membrane; a continuous non-porous hydrogen recombination catalyst coating, the continuous non-porous hydrogen recombination catalyst coating comprising a mixture of a hydrogen recombination catalyst and a proton conducting ionomer; and a continuous non-porous cross-linked polyelectrolyte multilayer coating, the continuous non-porous cross-linked polyelectrolyte multilayer coating comprising alternating layers of a polycationic polymer and a polyanionic polymer. Catalyst coated membranes incorporating proton exchange membranes and methods of making proton exchange membranes are also described.

To provide means by which residual residue on the surface of polished abrasive objects containing silicon-containing materials can be sufficiently removed.SOLUTION: A post chemical mechanical polishing cleaning composition contains a nitrogen-containing nonionic polymer and an anionic polymer containing sulfonic acid groups, and the nitrogen-containing nonionic polymer content is greater than 0.1% by mass and less than 1.0% by mass of the total post-chemical mechanical polishing cleaning composition, and the pH is less than 7.0.SELECTED DRAWING: None

The present invention provides a composition comprising liquid-liquid phase separation (LLPS)-based compartments comprising a cationic peptide and an anionic polymer, variations and modifications thereof, methods for preparation of the LLPS-based compartments, and uses thereof for delivery or for controlling entrapping and releasing of a payload.

There is provided a method for improving grease and oil resistance of a moulded fiber based article comprising introducing to a fiber stock a composition comprising at least one anionic polymer and cationic polymer and moulding the fiber stock. There is also provided a moulded fiber based article and a use of the composition for improving grease and oil resistance of a moulded fiber based article. There is also provided a method for preparation of a moulded fiber based article.

The invention discloses a mussel mucoprotein extraction and purification method, which comprises: 1) taking mussel foot glands, adding an extraction liquid 1, soaking, homogenizing, precipitating, taking the precipitate, adding an extraction liquid 2, re-suspending, homogenizing, carrying out centrifugal filtration, and taking the filtrate to obtain an extract; and 2) purifying the extract obtained in the step 1). The mussel mucoprotein obtained by extracting through a specific extracting solution and then adopting a specific purification method is high in protein and dopa content, can be compatible with pharmaceutical auxiliary materials such as anionic polymer components carbomer, sodium hyaluronate and sodium carboxymethyl cellulose, is used for preparing medicines or skin care products, and is wide in application prospect.

The invention discloses a preparation method of a sand washing mud-based pressed product, which comprises the following steps: carrying out semi-dry dehydration on sand washing mud until the water content is 15-20%, and then mixing the sand washing mud with biopolymer powder to obtain a premix, the biopolymer powder comprises cationic polymer powder and anionic polymer powder; loading the premix into a mold, and carrying out compression molding to obtain a pressed product mold blank; and activating the pressed product mold blank by using microwaves to obtain the sand washing mud-based pressed product. Therefore, the pressed product prepared by the preparation method disclosed by the invention has the advantages of high forming speed, high compressive strength and no need of a long-time autoclaved activation process, the forming period is greatly prolonged, and the large-scale yield is favorably increased. The raw materials are rich in source, solid waste resource utilization of the sand washing mud can be achieved, waste is turned into wealth, and the environmental burden is reduced.

The present invention provides a treatment solution that, when the treatment solution is applied to an object having a copper surface which has been subjected to chemical-mechanical polishing treatment, causes little corrosion of copper and is excellent in ability to remove an organic residue on the copper surface. The present invention also provides a method for treating an object using the treatment solution, and a method for producing a semiconductor device using the treatment solution.　A treatment solution according to the present invention comprises an anionic polymer, a phosphonic acid compound, and hydroxyl-group-containing carboxylic acid, wherein the mass ratio of the phosphonic acid compound content to the anionic polymer content is 0.1-1000, and the pH is 0.1-7.0. The treatment solution is used in a semiconductor production process.

The disclosure provides compounds, compositions, and methods for improving a papermaking process. A method may include adding a strength aid to a cellulosic fiber suspension in the papermaking process and adding a dewatering agent to the cellulosic fiber suspension. The dewatering agent may comprise a polymer having a reduced specific viscosity from about 2.5 to about 5.5 dL / g. The polymer may include, for example, a solution polymer, a latex polymer, or both. The strength aid may be selected from, for example, a cationic GPAM polymer, an anionic GPAM polymer, an amphoteric polymer with an overall negative charge, an amphoteric polymer with an overall positive charge, a cationic polyacrylamide polymer, an anionic polyacrylamide polymer, an associative polymer, a treatment polymer embedded in a colloidal hydroxide complex, starch, or any combination of the foregoing.

A cosmetic composition comprising: (a) 2-mercaptonicotinoyl glycine; (b) acyl glycinate surfactant; (c) a salt providing divalent cations having a charge density of about 40 to about 200 C / mm3 and a water solubility of at least 400 g / L; (d) anionic polymer; (e) glycerin; (f) water; and (g) reducing agent. The cosmetic composition is particularly useful in a method for brightening skin, depigmenting skin, treating hyperpigmentation of skin, treating melasmic skin, or evening skin tone.

The invention relates to the technical field of ionic polymers and the technical field of application of the ionic polymers in sewage treatment, and discloses a carboxymethyl cellulose based imidazole zwitterionic polymer and a preparation method and application thereof. Sodium carboxymethyl cellulose is used as a raw material and serves as a substrate, 1-(3-aminopropyl) imidazole is grafted to carboxyl, and the carboxymethyl cellulose based imidazole zwitterionic polymer is obtained. And finally attacking an imidazole upper group by using biphenyl dichloro-benzyl to form imidazole large cations. Due to the appearance of large cations, the sodium carboxymethyl cellulose which is an anionic polymer is amphoteric, so that the sodium carboxymethyl cellulose has a very good adsorption effect on pollutants in water. The synthesized carboxymethyl cellulose-based imidazole zwitterionic polymer has a very good adsorption effect on anion pollutants and cation pollutants in water, and has a very good inhibition effect on growth of bacteria. The method has a good application prospect in a biological filter in a wastewater secondary treatment unit.

The invention provides an anti-interference material and a preparation method thereof, an anti-interference film and a biosensor, the anti-interference material comprises an anionic polymer formed by polymerizing a monomer I and a monomer II, the monomer I is a monomer with a carbon-carbon double bond and a nitrogen heterocyclic ring, and the monomer II is a monomer with a carbon-carbon double bond and a nitrogen heterocyclic ring. The monomer II is organic sulfonate, organic carboxylate or organic phosphate with carbon-carbon double bonds, and the molar ratio of the monomer I to the monomer II is 1: 1 to 15: 1. Therefore, the anti-interference material can achieve an anti-interference effect on the anionic electrochemical active interferent.

The invention provides a natural Chinese herbal medicine hydrogel composite microneedle and a preparation method and application thereof.The preparation method comprises the steps that S1, natural food-borne nutrients and glycyrrhizic acid are mixed in a solvent, and a glycyrrhizic acid / natural food-borne nutrient solution is obtained; the natural food-borne nutrient is one or more of astaxanthin, baicalein, berberine and curcumin; s2, dropwise adding a metal salt solution into the glycyrrhizic acid / natural food-borne nutrient solution, and performing ultrasonic treatment and stirring to obtain glycyrrhizic acid / food-borne active substance gel; s3, mixing the polyanionic polymer solution with the glycyrrhizic acid / food-borne active substance gel to obtain a mixed solution; and S4, adding the mixed solution into a microneedle mold, carrying out vacuum centrifugation, and drying to obtain the microneedle patch. Good biocompatibility of the natural Chinese herbal medicine extract glycyrrhizic acid is used as a carrier to increase the in-vivo utilization rate of natural food-borne nutrients, so that a better treatment effect is achieved.

The invention discloses a catalyst for synthesizing a multi-carbon product by electrocatalysis of CO2, the catalyst is a Cu2O catalyst modified by an anionic polymer coating and a cationic polymer coating, the anionic polymer coating covers the surface of granular Cu2O, the particle size of the granular Cu2O is 3-7 [mu] m, the cationic polymer coating covers the surface of the anionic polymer coating, the particle size of the cationic polymer coating is 3-7 [mu] m, and the particle size of the cationic polymer coating is 3-7 [mu] m. The anionic polymer coating is a Speek coating, and the cationic polymer coating is a Nafion coating. The ionic polymer structure of the catalyst is elaborately designed in the preparation process, the Cu2O catalyst with a local high pH value, a high CO2 concentration and a hydrophobic microenvironment is obtained through elaborately designed steps and parameters, and when the Cu2O catalyst is applied to a carbon dioxide electrochemical reducing agent, the Cu2O catalyst has high electrocatalytic activity and selectivity on carbon dioxide reduction, and the Cu2O catalyst has a good application prospect. The Faraday efficiency of C2 + products can be remarkably improved, and the energy efficiency of CO2 utilization is improved.

The invention relates to the technical field of pharmaceutical preparations, in particular to inhalable drug-loaded nanoparticles as well as a preparation method and application thereof. The drug-loaded nanoparticles comprise a polymer nano-carrier and nintedanib loaded on the polymer nano-carrier through a hydrogen bond, the polymer nano-carrier is obtained by self-assembling cationic polysaccharide and an anionic polymer through electrostatic interaction. The cationic polysaccharide and the anionic polymer form a polymer nano-carrier with a stable internal structure through electrostatic interaction, and the entrapment efficiency of the nintedanib can be remarkably improved. The drug-loaded nanoparticles prepared by adopting an ionic cross-linking method are uniform in particle size, have good bioavailability and slow-release treatment effect, and can be used as a powerful choice for treating idiopathic pulmonary fibrosis as a lung inhalation preparation.

The invention relates to the technical field of hydrogel, in particular to photocuring 3D printing ink and a preparation method thereof, synchronous curing bi-crosslinking hydrogel and application thereof. According to the invention, based on the characteristic that an initiator (persulfate) commonly used in a hydrogel preparation process has strong oxidizing property and can react with reducing metal ions to generate free radicals, Fe < 2 + > released by a cationic photoinitiator containing Fe < 2 + > in ultraviolet light reacts with persulfate to generate Fe < 3 + > and free radicals; the preparation of the water-soluble anionic polymer and water-soluble vinyl monomer double-network cross-linked hydrogel is synchronously realized. According to the invention, the problems of insufficient conductivity, stretchability and flexibility of hydrogel prepared by utilizing photocuring 3D printing are solved.

A cosmetic composition or a fiber treatment composition for head decoration products, the composition containing (A) a cationic polymer having a viscosity when in a 1 mass% aqueous solution form at 30°C of 1000 mPa·s or more, (B) an anionic polymer, (C) one or more modified silicones selected from the group consisting of a polyglycerol-modified silicone and an amino-modified silicone, (D) a dimethylpolysiloxane, (E) a cationic surfactant, and (F) a higher alcohol, wherein a mass ratio [(A) / (B)] of the component (A) to the component (B) is 4.5 or more.

The present invention relates to a composition comprising: (a) at least one particle comprising at least one cationic polymer and at least one anionic polymer, at least one cationic polymer and at least one amphoteric polymer, at least one anionic polymer and at least one amphoteric polymer, or at least one amphoteric polymer, and at least one non-polymeric acid having two or more pKa values or salt(s) thereof or at least one non-polymeric base having two or more pKb values or salt(s) thereof; and (b) water, wherein the anionic polymer is selected from hyaluronic acid and derivatives thereof, and the amphoteric polymer is selected from cationized hyaluronic acid and salts thereof. The composition according to the present invention is stable, and can have a variety of cosmetic functions. The stickiness of the composition according to the present invention can be reduced.

The invention discloses a method for accurately and quantitatively determining the content of monomers and oligomers in a nylon polymer and application, and belongs to the technical field of nylon polymer detection. According to the method, GC-TOF and MALDI-TOF are combined for use, and the monomer content and the oligomer content of the nylon polymer are accurately obtained through formula calculation. Compared with the traditional method, the method provided by the invention has the advantages of more accurate determination result, wider range of tested molecular weight and more efficient and simpler operation. According to the method, the current situation that the nylon polymer cannot be accurately quantified is changed, whether the nylon polymer is synthesized by adopting an anionic polymerization method or an industrial hydrolysis ring-opening method can be known by accurately analyzing and accurately judging the monomer and oligomer content of the nylon polymer, and the result can be used for performance improvement and reverse analysis of the nylon polymer.

The instant disclosure relates to cosmetic compositions that include a non-hydrophobically modified anionic polymer; a cationic surfactant, including a cationizable surfactant; a fatty alcohol; and a cosmetically acceptable solvent; wherein the pH of the composition is below 5. Methods for using such cosmetic compositions are also provided.