346 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 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 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.

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.

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 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 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.

This invention relates to the field of medical dressing technology, and discloses a hydrogel dressing, its preparation method, and its application. The hydrogel dressing is prepared by physical cross-linking of the following raw materials: 6% (w / v) anionic polysaccharide, and 1%-3% (w / v) cellulose derivatives or anionic polymers. This invention provides an advanced hydrogel dressing solution with balanced performance, adjustable function, safety, gentleness, and ease of industrialization, effectively overcoming many limitations of existing technologies and possessing significant application value in wound care.

Provided is a method for producing a sintered ore with a high productivity without requiring any of an expensive anionic polymer dispersant and a step of crushing an iron ore(s) into a fine powder. The method is for producing a sintered ore, and includes: granulating, together with an additive water, a mixture of raw materials for sintering that contains an iron ore composed of multiple kinds of brands, using a granulator; and producing a sintered ore by sintering an obtained granulated raw material for sintering, using a sintering machine, wherein part of or all of the additive water at the time of granulation is substituted by a dust slurry solution in which a solid dust is suspended at a concentration of 20 to 55% by mass in water.

The present invention relates to an antifouling coating composition comprising an anionic polymer having one or more metal cations wherein the anionic polymer has siloxane moieties covalently bonded via amide groups. The anionic polymer is an acrylate-based copolymer prepared from at least one acrylate-based monomer and at least one acrylamide-based monomer having a linked polysiloxane moiety. The composition is particularly useful as a self-polishing antifouling coating.

This invention relates to the field of polymer technology, specifically disclosing an oxyfluorene-containing polyaryl suspended side-chain anion exchange polymer. By introducing an oxyfluorene structure, this invention successfully overcomes the defects of traditional polyaryl ether materials, such as easy main chain breakage and degradation under strong alkaline conditions, thus improving the chemical and thermal stability of the material. The suspension side-chain strategy introduces benzene rings, quaternary ammonium groups, or piperidine cationic groups, effectively promoting microphase separation within the polymer and constructing efficient ion transport channels. This allows the membrane material to maintain a low swelling ratio while achieving good hydroxide ion conductivity, reaching up to 170.2 mS / cm at 80°C. The polymer exhibits excellent mechanical properties, with outstanding dry membrane tensile strength and excellent alkali resistance and durability. After immersion in a strong alkaline (KOH) solution at 80°C for over 1800 hours, its conductivity loss is minimal. The anion exchange membrane prepared by this invention has good application value in fuel cells and water electrolysis for hydrogen production, demonstrating strong commercial potential.

The invention discloses a microphase separation hydrogel electrolyte with ion selectivity and a preparation method and application thereof. The electrolyte is prepared by constructing a microphase separation polymer network composed of a polyanionic polymer and an ion exchange group-containing polymer in a synergistic manner and inducing crosslinking by using metal ions. The formation of a continuous ion transmission channel in the hydrogel is realized. The technical problem that high ionic conductivity and high ionic transference number are difficult to obtain at the same time in a traditional hydrogel electrolyte is solved, spatial unwrapping and selective coordination of a polymer chain segment are induced through a microphase separation structure, and directional construction of an ion channel is achieved; and the ion conductivity of the electrolyte is remarkably improved, and meanwhile, the target ion transference number is further improved. The prepared hydrogel electrolyte has high mechanical stability, high ion flux and excellent ion selectivity, and can be widely applied to high-performance electrochemical devices such as batteries.

To achieve an efficacy equivalent to or superior to that of traditional organic biocides through the combination of low-cost components.SOLUTION: A composition for slime prevention according to the present invention comprises a chlorine-based oxidizing agent, a sulfamic acid compound, an anionic polymer, an alkali metal salt, and an azole compound.SELECTED DRAWING: None

The invention relates to an amorphous bismuth molybdate photocatalytic material as well as a preparation method and application thereof, and belongs to the technical field of photocatalytic materials. The preparation method of the amorphous bismuth molybdate photocatalytic material comprises the following steps: (1) dissolving Bi (NO3) 3.5 H2O in an HAC solution, uniformly mixing and stirring at room temperature, and marking as a solution A; dissolving Na2MoO4 in water, adding a water-soluble anionic polymer, uniformly stirring, and marking as a solution B; and (2) slowly dropwise adding the solution B into the solution A, carrying out a co-precipitation reaction under the conditions of normal temperature and normal pressure, after dropwise adding is completed, maintaining heating and stirring for a period of time, then carrying out normal-temperature stirring, and after stirring is completed, carrying out centrifugation, washing and drying to obtain the amorphous bismuth molybdate photocatalytic material A-Bi2MoO6. The modified amorphous A-Bi2MoO6 provided by the invention has a relatively large specific surface area and more mesoporous structures, so that the adsorption of rhodamine B is enhanced, and the adsorbed dye can be efficiently catalyzed and degraded under the action of illumination.

The present invention relates to a composition comprising a plurality of aqueous phases comprising: (a) at least one cationic polymer; (b) at least one non-polymeric acid having two or more pKa values or salt thereof; (c) at least one anionic polymer, and (d) water, and a fatty phase comprising: (e) at least one oil, wherein the aqueous phases are dispersed in the fatty phase, and the composition further comprises (f) at least one first powder comprising (i) at least one inorganic oxide, and (ii) at least one fatty acid or salt thereof. The composition according to the present invention is stable and can provide a keratin material such as skin with, at least, an acceptable level of sebum control, good spreadability and comfortable feeling to use.

A foam stabilizing composition comprises (A) an anionic polymer and (B) a siloxane cationic surfactant comprising a cationic moiety having the formula Z1-D1-N(Y)a(R)2-a, wherein Z1 is a siloxane moiety, D1 is a divalent linking group, R is H or an unsubstituted hydrocarbyl group having from 1 to 4 carbon atoms, subscript a is 1 or 2, and each Y has formula -D-NR13+, where D is a divalent linking group and each R1 is independently an unsubstituted hydrocarbyl group having from 1 to 4 carbon atoms. An aqueous foam comprising the composition and method of using the same are also disclosed.

This invention relates to an aqueous polyurethane composition comprising: a liquid medium comprising at least one organic liquid having a solubility in water of ≥4 g organic liquid / 100 g water at 25°C, and water; at least one polyurethane polymer compound dispersed in the liquid medium; and optionally at least one coating formulation component. The polyurethane composition further comprises at least one thickener comprising at least one anionic polymer selected from anionic polyacrylamide, anionic polymethacrylamide, anionic polyacrylamide-polymethacrylamide, and / or a mixture of at least two thereof, and optionally, 0 to 0.12% by weight, preferably 0 to 0.05% by weight, more preferably 0 to 0.01% by weight, based on 100% of the total weight of the aqueous polyurethane composition, at least one compound selected from unbound or ionicly bound organic amines, ammonia, or a mixture of at least two thereof, wherein the aqueous polyurethane composition has a pH value ≤ 8.5, and wherein the at least one thickener is different from the at least one coating formulation component and the at least one polyurethane polymer. The present invention further relates to a kit-of-parts for preparing a waterborne polyurethane composition, a method for preparing a waterborne polyurethane composition, and the use of the waterborne composition.

The invention discloses a nucleic acid vaccine based on different forms of nano-aluminum adjuvants and application thereof, the nucleic acid vaccine is composed of an inner core, a middle layer and a shell from inside to outside in sequence, the inner core is a compound of a cationic polymer and nucleic acid, the middle layer is an anionic polymer, and the shell is a continuous or discontinuous nano-aluminum coating layer. The nano-aluminum-coated nucleic acid delivery system provided by the invention is used for preparing vaccines, can effectively activate antigen presenting cells and promote antigen presentation, so that humoral immunity and cellular immunity processes of an organism are simultaneously activated, the tumor immunotherapy effect is enhanced, and the nano-aluminum-coated nucleic acid delivery system has relatively high clinical use value.

This invention relates to a particle-polymer aggregate composite oil displacement agent and its application. The oil displacement agent of this invention comprises: (A) a particle suspension containing particles and water, wherein the mass fraction of the particles is 200-2000 ppm; and (B) a polymer solution containing a polymer and water, wherein the mass fraction of the polymer is 0.01-10 ppm, and the polymer is one of the following: (B1), (B2), or (B3): (B1) an ionic polymer, wherein the ionic polymer is a cationic or anionic polymer, wherein the charge of the ionic groups on the polymer molecular chain is opposite to the charge of the particle surface; (B2) a mixture of cationic and anionic polymers; (B3) a naturally aged nonionic polymer. The oil displacement agent of this invention is low in cost, easy to inject, has a high sealing effect, and good oil displacement effect.