36 results about "Anionic polymers" patented technology

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.

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 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.

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.

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.

The application relates to the technical field of drug delivery, and discloses a polymer microcrystal patch fused with a biodegradable material and a preparation method thereof, which comprises a microneedle array and a supporting substrate made of raw materials, and is characterized in that the microneedle array is made of raw materials containing a cationic polymer, an anionic polymer, an ion shielding agent and an active ingredient. The preparation method comprises the following steps: filling a solution containing a cationic polymer and an active ingredient into a microneedle negative mold; and covering the surface of the solution with a layer of a solution containing an anionic polymer and an ion shielding agent. By introducing the ion shielding agent, the application effectively controls the ion crosslinking rate between the polymers, solves the problem of incomplete microneedle forming caused by too fast reaction, and significantly improves the forming quality of the microneedles. The method is carried out at room temperature, the conditions are mild, the bioactivity of the active ingredient can be effectively protected, and the used materials are good in biocompatibility and high in safety.

This invention discloses a reusable cover film and its preparation method, comprising: compositing an outer polyester film and an inner heat-sealable polyester film to form a pressure-sensitive adhesive layer and a release layer; coating an anti-fog coating on the outer side of the inner heat-sealable polyester film; performing bidirectional half-cutting on the cover film substrate to form staggered first and second half-cuts; and partially removing the pressure-sensitive adhesive at the starting end of the opening path to form a non-adhesive gripping part. A silver-based antibacterial agent and a silane coupling agent are added to the release layer, and an anionic polymer is added to the pressure-sensitive adhesive layer. The two react with electrostatic adsorption and coordination at the interface, and the aminated polymer in the pressure-sensitive adhesive can partially reduce silver ions to silver nanoparticles in situ, forming an interfacial gradient. This invention enables the cover film to have reusable opening, anti-fog, and antibacterial functions, stable opening force, reliable closing, and all layers are made of polyester material for easy recycling.

Living polymers prepared by organolithium initiated polymerization of conjugated diene monomer or copolymerization of conjugated diene and vinyl aromatic monomers are efficiently coupled by using a functionalized siloxane oligomer blend as coupling agent. Diene rubber compositions partially coupled with functionalized siloxane oligomer blends exhibit broad molecular weight distribution, increased throughput in their industrial processing, as well as faster dissolution in recipes to produce rubber toughened plastics such as HIPS and ABS. Radial styrene-butadiene block copolymers as well as their corresponding hydrogenated block copolymers achieved excellent thermoplastic elastomer performance and can be used for hotmelt adhesives, sealants, asphalt modification, footwear; technical compounds, thermoplastic gels, films or elastic fibers.

The present invention relates to an assembly comprising a carbon nanotube coated successively with: a primary coating resulting from the polymerisation of an amphiphilic diynic compound bearing an anionic or cationic group; optionally an intermediate coating of a cationic or anionic polymer; and a final coating of a porphyrin derivative which is either an anionic porphyrin or a cationic porphyrin, the coatings being linked to each other by electrostatic interactions. The present invention relates also to a method to prepare such an assembly and to its use as a photocatalyst, especially in a water medium, in particular in oxidation reactions, and for the production of singlet oxygen which is especially useful for disinfection or photodynamic therapy (PDT).

The application belongs to the technical field of soil conditioners, and particularly relates to a composite gel soil conditioner induced by endogenous gelation in gas phase and a preparation method and application thereof. The preparation method comprises the following steps: (S1) dispersing an acid-soluble multivalent metal salt, porous carbon and a mineral filler in water, adding an anionic polymer to dissolve, and then adding a non-water-soluble cationic polymer to form a precursor slurry; (S2) injecting the precursor slurry into an open mold, placing the open mold in a sealed container, and using a volatile acid source to generate an acidic atmosphere to induce gelation, thereby obtaining a composite hydrogel; and (S3) washing, drying and crushing the composite hydrogel to obtain the composite gel soil conditioner. The method for inducing endogenous gelation in the gas phase can induce the formation of polyelectrolyte interaction and ionic crosslinking structure, and realize moderate gelation and uniform composite of fillers. The soil conditioner has good salt resistance, water absorption capacity, water conservation and moisture conservation effect, Na + migration / leaching promotion effect and environmental compatibility.

The present invention relates to a method for producing collagen-containing anisotropic fibers, the method comprising: a step for bringing an anionic polymer into contact with an aqueous collagen solution in which collagen has been dissolved to form an interface, so that the collagen is formed into fibrils; and a step for pulling up the fibrillated collagen from the aqueous collagen solution with which the anionic polymer has been brought into contact so as to form anisotropic fibers. The present invention also relates to a method for producing a collagen-containing structure having in the interior thereof a hollow structure filled with an aqueous medium, the method comprising: a step for forming, in an aqueous solution containing an anionic polymer, droplets of an aqueous solution in which at least collagen is dissolved; and after the step for forming the droplets, a step for allowing the droplets to stand for a certain period of time to aggregate collagen molecules at the interface between the droplets and the aqueous solution containing the anionic polymer.

This invention discloses a multifunctional anti-wrinkle agent for nylon dyeing, its synthesis method, and its application, belonging to the field of textile auxiliaries technology. The anti-wrinkle agent is a polyester polyether compound containing polymeric cashew bisphenol. Specifically, it is based on ortho-cashew bisphenol polyoxyethylene ether, which is sequentially polymerized with a polyester linker and a polyether linker. After neutralization and sulfonation, the target product is obtained. By controlling the reactant ratio and reaction process parameters, the product is made into an anionic polymer compound. In the acid dyeing process of nylon, it can be efficiently adsorbed onto the surface of nylon fibers, effectively preventing problems such as scratches, bark wrinkles, and abrasions during the dyeing process of nylon fabrics. It also significantly improves the hydrophilicity and hand feel of nylon fabrics, exhibits high stability under 98℃ dye bath conditions, and has good compatibility with weakly acidic and neutral dyes, without forming lakes, oil spots, or color stains, thus improving the overall quality of nylon fabric dyeing and finishing.

The present invention relates to a composition comprising: (a) at least one cationic polymer; (b) at least one anionic polymer; (c) at least one non-polymeric acid having two or more pKa values or salt(s) thereof; and (d) at least one skin care active ingredient selected from the group consisting of (d1) microorganism lysates, (d2) adenosine compounds, and mixtures thereof, wherein the (a) cationic polymer is selected from polylysines, chitosans, and mixtures thereof, and the (b) anionic polymer is selected from hyaluronic acid, derivatives thereof, salts thereof, and mixtures thereof. The composition according to the present invention can show reduced stickiness.

This invention belongs to the field of soil conditioner technology, specifically relating to a gas-phase induced endogenous gel composite gel soil conditioner, its preparation method, and its application. The preparation method includes the following steps: (S1) Acid-soluble polyvalent metal salts, porous carbon, and mineral fillers are dispersed in water, dissolved by adding an anionic polymer, and then a water-insoluble cationic polymer is added to form a precursor slurry; (S2) The precursor slurry is injected into an open mold and placed in a sealed container, where a volatile acid source is used to create an acidic atmosphere to induce gelation, resulting in a composite hydrogel; (S3) The composite hydrogel is washed, dried, and pulverized to obtain the composite gel soil conditioner. The gas-phase induced endogenous gelation method of this invention can induce the formation of polyelectrolyte interactions and ionic cross-linking structures, achieving moderate gelation and uniform composite of fillers. This soil conditioner has good salt tolerance and water absorption capacity, water retention and moisture-increasing effects, and Na+ content. + Migration / rinsing promotion and environmental compatibility.

A polymer solid electrolyte for an electrochemical device including a magnesium electrode as a negative electrode,the polymer solid electrolyte including a Mg polymer salt containing Mg2+ and an anionic polymer having an anionic functional group and a coordinating functional group, andthe polymer solid electrolyte having Mg ion conductivity.

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.

This invention discloses an aerogel protocellular material, its preparation method, and its applications. The preparation method includes: under the coexistence of acidic and alkaline catalysts, sequentially subjecting an aqueous solution of a silicon precursor containing bioenzymes and anionic polymers to acid hydrolysis and alkaline condensation reactions to obtain a silica sol; mixing this sol with an oil phase containing cationic compounds for emulsification; and then, through spontaneous film formation and sol-gel conversion, forming a hydrogel protocellular material. Finally, the material undergoes low-temperature solvent replacement and drying. This invention provides the first method to achieve in-situ enzyme immobilization and integration of cell-like structures within a material, realizing the dehydration stabilization of the protocellular system and the construction of aerogel protocellular materials, overcoming the limitation of existing protocellular construction technologies that cannot operate outside of an aqueous environment; furthermore, it endows the bioenzymes with excellent thermal stability, photostability, and resistance to electrical shock, solving the technical problem of easy inactivation of existing bioenzymes under extreme conditions.

The present invention is a water-based composition for the body containing the following components: (A) an anionic polymer having a viscosity of 5,000 mPa·s or more at 25°C and having sulfonic acid or sulfuric acid groups in a 2% by mass aqueous solution; (B) one or more selected from water-swellable clay minerals and water-swellable mica with an aspect ratio of 150 or more; and water; and (1) the storage modulus of the above composition, as measured by dynamic viscoelasticity determination at a temperature of 25°C, a frequency of 2 Hz, and a strain of 0.01%, is 60 Pa or more and 5,000 Pa or less; or, the present invention is a water-based composition for the body containing the above components, and (2) the content of the above component (B) is 0.01% by mass or more and 10% by mass or less, and the mass ratio of the above component (A) to the above component (B) [(A) / (B)] is 0.2 or more and 20 or less.

Cosmetic composition in the form of a water-in-water emulsion. The present invention relates to a cosmetic composition in the form of a water-in-water emulsion comprising an internal aqueous phase in the form of droplets suspended in a continuous external aqueous phase, said aqueous phases comprising: a) at least one first anionic polymer selected from cross-linked hyaluronic acid polymers, optionally in a mixture with a second anionic polymer selected from chitosan derivatives modified by at least one carboxyalkyl group in which said carboxyalkyl group is preferably C2-C6, hyaluronic acid and its salts, and mixtures thereof; b) at least one cationic polymer selected from C1-C6 hydroxyalkylated quaternary ammonium salts of guar gum, chitosan, polyquaterniums, and mixtures thereof, the total weight % of anionic polymer a) representing at least 0.25% by weight, relative to the total weight of the cosmetic composition.and the composition further comprising at least one hydrophilic gelling agent, at least one weak acid, and at least one weak base. The present invention also relates to a method for preparing a cosmetic composition according to the invention, as well as a method for skin and / or hair care comprising a step of applying a cosmetic composition according to the invention to at least one part of the body and / or face and / or hair. Figure for the abstract: Fig. 1.

Provided is means that enables removing residues remaining on the surface of a polished object containing silicon-containing material sufficiently. A post-chemical mechanical polishing cleaning composition, containing a sulfonic acid group-containing anionic polymer and a nitrogen-containing nonionic polymer having a weight-average molecular weight of 2,000 or more and 20,000 or less.

A polishing agent contains abrasive grains, an anionic polymer or a salt thereof, and water. The anionic polymer has an acid value of 400 mgKOH / g or less. The polishing agent satisfies at least one of the following conditions: X1=N11 / N12 is 1.5 or less, X2=N21 / N22 is 7.0 or less, and X3=N31 / N32 is 10 or less, where N11, N21, and N31 represent the number of particles contained per unit mass of the abrasive grains in the polishing agent that have a particle size of 0.56 μm or more, 0.79 μm or more, and 0.98 μm or more, respectively; and N12, N22, and N32 represent the number of particles contained per unit mass of abrasive grains in an abrasive grain dispersion containing the abrasive grains, a dispersant, and water that have a particle size of 0.56 μm or more, 0.79 μm or more, and 0.98 μm or more, respectively.

This invention provides a chemical mechanical polishing slurry for use in semiconductor material manufacturing processes. The slurry comprises: nano-α-alumina abrasive particles, a dispersant, a dispersing aid, an organic carboxylic acid, an oxidant, water, and a pH adjuster. It features good dispersibility, strong stability, low particle size, and long-term stability. This invention utilizes the synergistic effect of an amphoteric surfactant and an anionic polymer, employing a steric hindrance stabilization mechanism to promote the dispersion of alumina abrasive particles in the polishing slurry, ensuring the long-term stability of the slurry system without affecting the polishing of tungsten.

The disclosure provides compositions and methods for modifying a target nucleic acid. In some embodiments, a composition can include a targetable nuclease, a DNA-binding protein, and a donor template comprising a homology directed repair (HDR) template and one or more DNA-binding protein target sequences. In some embodiments, a composition can include a Cas protein, one or more single guide RNAs (sgRNAs), and an anionic polymer.

The present invention relates to a cosmetic composition in the form of aqueous core-shell spheroids, comprising: a) an anionic polymer chosen from polyglutamic acid salts, and mixtures thereof, b) a cationic polymer which is CHITOSAN, and c) at least one hydrophilic gelling agent. The present invention also relates to a cosmetic composition in which the aqueous core-shell spheroids are suspended in a continuous gelled aqueous phase. The invention also relates to a method for preparing a cosmetic composition according to the invention, and also to a method for caring for the skin and / or the hair, comprising a step of applying a cosmetic composition according to the invention to at least one part of the body and / or of the face and / or of the hair.

This invention provides a flocculation, separation, and purification material for polluted wastewater, consisting of a powder or liquid contained in a container, that brings about significant economic benefits, reduces environmental risks, efficiently removes radioactive cesium (Cs-134 and Cs-137), and has a low environmental impact. [Solution] The wastewater flocculation, separation, and purification substance, consisting of a powder or liquid, stored in the storage body 1 according to the present invention, is provided as a powder or liquid and contains 50% by mass of natural anhydrous gypsum, 35% by mass of aluminum sulfate, 4% by mass of cationic polymer, 4% by mass of anionic polymer, and 7% by mass of alkali metal carbonates and / or alkaline earth metal carbonates and / or hydroxides and oxides. Furthermore, the wastewater purification method according to the present invention involves adding this flocculation, separation, and purification substance to the wastewater and stirring to purify the wastewater.

The present invention relates to a cosmetic composition in the form of a water-in-water emulsion, comprising an internal aqueous phase in the form of droplets in suspension in a continuous external aqueous phase, the aqueous phases comprising: a) at least one first anionic polymer selected from crosslinked polymers of hyaluronic acid, optionally mixed with a second anionic polymer selected from chitosan derivatives modified by at least one carboxyalkyl group in which the carboxyalkyl group is preferably a C2-C6 carboxyalkyl group, hyaluronic acid and its salts, and mixtures thereof, b) at least one cationic polymer selected from C1-C6 hydroxyalkyl quaternary ammonium salts of guar gum, chitosan, polyquaterniums, and mixtures thereof, the total weight % of anionic polymer a) representing at least 0.25% by weight, relative to the total weight of the cosmetic composition, and the composition further comprising at least one hydrophilic gelling agent, at least one weak acid, and at least one weak base. The present invention also relates to a method for preparing a cosmetic composition according to the invention, and to a skin-care and / or hair-care method comprising a step of applying a cosmetic composition according to the invention to at least part of the body and / or the face and / or the hair.

This invention provides an oil-free aqueous gel that maintains a homogeneous appearance after storage at 20°C and 45°C for three months, does not leave a sticky residue after application to the skin, and avoids interference with the upper layers of the epidermis, as well as its use as a topical cosmetic composition, and a novel method for reducing the stickiness of thickened aqueous gels that optionally contain many salts. [Solution] A cross-linked anionic polymer electrolyte, a mixture of alkanols; a composition (C) of alkyl polyglycoside; a mixture (M) of another alkanol mixture and composition (C); one or more cosmetic active ingredients; and an aqueous gel containing water in an amount necessary to make it 100% by mass.

A cosmetic composition comprising: (a) ascorbic acid; (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) cationic polymer is described. 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 present invention relates to a fouling control coating composition comprising (i) a siloxane-modified anionic polymer containing one or more metal cations, and (ii) an amine compound having at least one amine group bonded to a saturated carbon atom, having a boiling point of at least 85°C, and a molecular weight of at least 70. The coating is particularly useful as a self-polishing fouling control coating.

The present technology relates to compositions suitable for depositing personal care actives onto keratinous substrates. More particularly, the technology concerns compositions comprising lipophilic materials which are deposited from an ampholytic-anionic delivery system. The compositions exhibit high deposition of the lipophilic material onto keratinous substrates such as the skin, nails, and / or hair upon application thereto. In one aspect, the disclosed technology relates to a personal care deposition composition for depositing a lipophilic material onto a keratinous substrate comprising: a) at least one ampholytic polymer; b) at least one anionic polymer; c) at least one lipophilic material; and d) water, wherein the weight ratio of the at least one ampholytic polymer to the at least one anionic polymer ranges from about 10:1 to about 1:1.