137 results about "Ionic polymerization" patented technology

Methods, systems and devices for removing iodide from an aqueous solution including submerging an iodophilic electrode in an aqueous solution containing iodide, applying a current to the electrode, and electrochemically oxidizing the iodide to iodine within the electrode. The electrode may include an iodophilic material and an electrically conductive material. It may also include a binder. The iodophilic material may be a starch, chitosan, carboxycellulose, cationic polymer, or an anion exchange membrane material, for example. After oxidizing the iodide to iodine within the electrode, the electrode may be submerged in a second solution and a current may be applied to reduce the iodine and release it from the electrode in the form of iodide into the second solution.

The application relates to a preparation method and application of a performance-adjustable reactive cationic polymer, and belongs to the field of textile printing and dyeing. The preparation method of the performance-adjustable reactive cationic polymer comprises the following process steps: mixing an epoxy reactive monomer with concentrated hydrochloric acid, reacting for a certain time under ice bath, and adjusting the pH of the reaction system to be neutral; adding a cationic monomer into the above reaction system, simultaneously adding a phase transfer catalyst or an organic solvent, adding an initiator drop by drop under a nitrogen atmosphere, stirring to carry out a free radical polymerization reaction, naturally cooling after the reaction is completed, and drying to obtain the reactive cationic polymer. According to the application, salt-free high-color-yield dyeing of reactive dyes can be realized when the amount of the cationic polymer is very low.

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.

The present invention relates to a fabric softener composition, characterized by comprising (a) a nonionic surfactant; and (b) one or more selected from the group consisting of a cationic polymer not containing an ester moiety and polydimethylsiloxane, thereby imparting smoothness and softness to fibers and improving storage stability.

This invention relates to a 1,1,2,2-tetrahydroperfluoroalkyl-substituted allyl quaternary ammonium salt, its preparation method, and its application, belonging to the field of flocculation treatment technology for high-salt industrial wastewater from natural gas purification. To address the problem that the synthesis of cationic polymer flocculants in existing technologies requires large amounts of surfactants and involves complex operations, this application employs a substitution reaction between 1,1,2,2-tetrahydroperfluoroalkyl iodide and N-methylallylamine; iodomethane is then reacted with the substitution reaction product to undergo quaternization, yielding a 1,1,2,2-tetrahydroperfluoroalkyl-substituted allyl quaternary ammonium salt; the 1,1,2,2-tetrahydroperfluoroalkyl-substituted allyl quaternary ammonium salt is polymerized with acrylamide to obtain a novel cationic polyacrylamide flocculant. The synthesis of cationic fluorocarbon-modified hydrophobic associative polyacrylamide flocculants using an aqueous solution polymerization method is simple, requires no surfactants, and experiments show that the prepared flocculant exhibits excellent flocculation performance.

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.

The application provides a kind of nanoparticle, preparation method and its early screening related application of cancer, wherein, nanoparticle includes superparamagnetic nanometer core, cationic polymer modified on the surface of superparamagnetic nanometer core and targeted polypeptide grafted on cationic polymer, the targeted polypeptide can specifically recognize tumor specific antigen protein, and has the modular structure of rigid helix and charge repulsion sequence.The plasma low-abundance protein enrichment nanoparticle provided by the application can be used for the detection of early screening of tumor through liquid biopsy, can significantly improve the detection rate of early tumor, and has important clinical significance.

A manufacturing method of a liquid ejecting head, in which a ejection port forming member that forms an ejection port for ejecting a liquid and a flow path of the liquid that communicates with the ejection port are formed on a substrate, the manufacturing method includes: forming a mold for the flow path of the liquid on the substrate; applying a photosensitive resin composition for forming the ejection port forming member on the substrate on which the mold has been formed so as to form a cationically polymerizable resin layer; and performing exposure and development on the cationically polymerizable resin layer so as to form the ejection port forming member, wherein the photosensitive resin composition includes at least one epoxy resin selected from an alicyclic epoxy resin and a glycidyl epoxy resin and a cationic photopolymerization initiator having a specific structure and a molar absorption coefficient.

The objective is to provide a heat-shielding composition that includes a dispersion powder that can be converted into an aqueous dispersion using water as a dispersion medium by adding water. [Solution] A nonionic polymer dispersant and A crystal with a hexagonal crystal structure, general formula M x WO y (However, element M includes one or more elements selected from Li, Na, K, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Ra, and satisfies 0.1 ≤ x ≤ 1.0 and 2.0 ≤ y < 4.0) Composite tungsten oxide particles containing composite tungsten oxide, A heat-shielding composition comprising polycarbonate resin or acrylic resin.

The present disclosure relates to ionic copolymers and terpolymers derived from monomers such as 1-alkyl-3-vinylimidazolium halides, 1-vinylimidazole, acrylamide, n-vinylpyrrolidone, and poly(ethylene glycol) methyl ether methacrylate, and their use as corrosion inhibitors in process streams in industrial systems, more specifically in oil refinery streams. The corrosion inhibitors function at concentrations below 100 ppm, temperatures up to 60° C., and in the presence of congenital waters or synthetic brines.

An on-chip visible light signal detector based on the photoimpedance effect of polymer electrolyte belongs to the field of functional photonic chip technology. It consists of a substrate layer, a lower cladding layer, a lower metal layer, a polymer grooved layer, an ion-polymer electrolyte core layer, and an upper metal layer, and the device is a MIM structure. The ion-polymer electrolyte core layer has an inverted ridge waveguide structure. The polymer electrolyte material PIL / PBI exhibits a photoimpedance effect; that is, when the detected optical signal propagates in the inverted ridge waveguide, it interacts with the polymer electrolyte, converting light energy into heat energy, increasing the concentration and activity of free ions inside the PIL / PBI, thereby changing its impedance value. This invention solves the problems of single detection dimension and insufficient responsivity in existing on-chip visible light detectors, realizing the detection of three dimensions of optical signal: polarization state, wavelength, and power. It has advantages such as fast response speed, simple fabrication process, low cost, small size, and high integrability.

This invention relates to the field of printing technology, specifically to a pH-responsive cationic white ink, its preparation method, and its application. This invention introduces a pH-responsive cationic polymer as the core stabilizing component. By dynamically controlling the charge state of the polymer, it achieves long-term stable storage of the ink under neutral conditions and enhanced adhesion under acidic conditions, effectively resolving the inherent contradiction between stability and adhesion in DTF white ink. Using a pH-responsive cationic polymer formed from polyethyleneimine and acid as the core stabilizing component effectively solves the contradiction between storage stability and transfer adhesion in existing technologies, achieving a pattern wash resistance of 60-75 times.

The present invention discloses an ionic polymer-based ion adsorption type self-driven tensile sensor. An ionic polymer-based ion adsorption type self-driven tensile sensor according to one embodiment of the present invention comprises an ionic polymer composite material containing ions internally, and a first electrode and a second electrode having different work functions attached to the ionic polymer composite material, thereby forming a base potential through the difference in the amount of ions physically adsorbed to each electrode surface, and including a mechanism in which the ion concentration in the tensile direction within the ionic polymer thin film decreases in response to an external tensile stimulus, so as to detect the degree of change in the potential difference between the two electrode ends based on the change in the amount of ions adsorbed to the surfaces of the first and second electrodes, thereby providing a self-driven tensile sensor that measures the degree of tensile without an external power source.

The application discloses a cationic polymer containing a fused ring structure and a preparation method and application thereof, and an anion exchange membrane based on the cationic polymer is prepared by using the cationic polymer containing a fused ring structure in a main chain. By introducing a fused ring structure element into the main chain of the cationic polymer, the interaction force between the formed polymer chains is increased by using the pi-pi interaction between the fused ring structures, the water absorption and swelling of the cationic polymer are inhibited, and thus the anti-swelling ability and the dimensional stability of the anion exchange membrane prepared from the cationic polymer are improved. In addition, by using the high reactivity of the fused ring structure monomer, the molecular weight of the cationic polymer is increased, and other monomers are copolymerized to regulate the performance of the cationic polymer, so that the anion exchange membrane prepared from the cationic polymer has excellent comprehensive performance, and is beneficial to the application in the fields of anion exchange membrane fuel cells and water electrolysis.

The present invention relates to compositions comprising RNA, preferably messenger RNA (mRNA), more preferably self-amplifying RNA (saRNA), and polymers, in particular cationic polymers, such as polyethylenimine (PEI), poly-L-Lysin (PEL), polyvinylamine (PVA) or polyallylamine (PAA), where individual RNA molecules are present in solution. In the formulations, the RNA is preferentially present in the form of monomers, dimers, timers or oligomers, but not as aggregates comprising a large number of RNA molecules per aggregate, in particular large polyplex nanoparticles. The formulations display improved transfection efficacy and they can be used for delivery of RNA to a subject, where they have an improved dose response relationship in comparison to formulations where large aggregates in the form of polyplex nanoparticles are present.

This invention discloses a high-strength annular prestressed concrete pole and its preparation method, belonging to the technical field of concrete poles. The high-strength annular prestressed concrete pole comprises concrete and a prestressed reinforcement cage. The concrete contains silicate cement, silica fume, fine aggregate, coarse aggregate, a chloride-resistant component, a water-reducing agent, and water. The chloride-resistant component is prepared by emulsifying 15-17 parts of acrylate-styrene copolymer emulsion, 7-9 parts of cationic polymer, 2.5-3.5 parts of modified fluorinated nano-silica, 0.25-0.35 parts of blocked initiator, and 0.45-0.55 parts of migration promoter. During preparation, the aggregate and chloride-resistant component are first dry-mixed, water and admixtures are added in stages, and then the mixture is centrifuged, steam-cured, and subjected to gradient dehumidification curing. This invention, through the synergistic effect of the chloride-resistant component and curing process, significantly improves the pole's resistance to chloride corrosion and its strength, making it suitable for high-salt coastal environments and ensuring long-term stable service.

The application discloses a UV and moisture dual-cured high-temperature-resistant hot-melt acrylate pressure-sensitive adhesive tape and a preparation process thereof, and belongs to the technical field of high polymer materials. The pressure-sensitive adhesive tape comprises a base material and an adhesive layer. Raw materials of the adhesive layer comprise acrylate prepolymer containing a side chain containing a vinyl ether group, modified terpene resin containing a phenolic hydroxyl group, alicyclic epoxy functional silane, a cationic photoinitiator and an antioxidant. By controlling the molar ratio of the phenolic hydroxyl group and the vinyl ether, the tackifying resin is chemically grafted into the polymer network by using the cationic chain transfer reaction, and the double mechanism of the light-induced cationic polymerization and the acid-catalyzed moisture curing is combined, so that the problems of poor temperature resistance and oxygen inhibition of the traditional hot-melt adhesive are solved. The tape has excellent high-temperature shear resistance, high initial adhesion and deep curing characteristics, and the preparation process has good hot-melt processing stability.

Disclosed in the present invention is a galvanized steel plate having good adhesion to an electron beam cured coating. At least one surface of the galvanized steel plate is provided with a composite coating, and the composite coating comprises the following active ingredients: 45-75 parts by weight of aqueous cationic polymer resin A; 15-45 parts by weight of a compounded organosilane coupling agent B, wherein the compounded organosilane coupling agent B is formed by mixing and hydrolytic polycondensation of at least one organosilane coupling agent B1 containing an epoxy functional group and at least one organosilane coupling agent B2 containing an amino functional group; 3-10 parts by weight of a silane coupling agent C containing an unsaturated bond; a water-soluble fluorine-containing compound D, wherein the fluorine element is present in an amount of 1.5-5 parts by weight; and a water-soluble phosphorus-containing compound E, wherein the phosphorus element is present in an amount of 2-5 parts by weight. Also disclosed in the present invention are a surface treatment agent for a galvanized steel plate and a method for manufacturing a galvanized steel plate having good adhesion to an electron beam cured coating.

This invention discloses a self-thickening, moisturizing, and oil-controlling gentle facial cleanser and its preparation method, belonging to the field of cosmetic technology. The raw materials are composed of the following percentages by weight: rhamnolipin 2%~8%, alkyl glycoside 5%~15%, cationic polymer 0.1%~1.5%, moisturizer 2%~6%, plant extract 0.5%~3%, pH adjuster (the amount needed to adjust the system pH to 5.0~7.0), preservative 0.1%~1.0%, and water as the balance. Through the ternary system of rhamnolipin-alkyl glycoside-cationic polymer, self-thickening and foam stability are achieved through electrostatic interaction and steric hindrance synergy, without relying on traditional thickeners such as carbomer. Simultaneously, it possesses excellent moisturizing and oil-controlling properties, with an oil removal rate ≥89%, a skin moisture content increase of ≥15% after 4 hours of use, and an oil secretion inhibition rate of ≥20% after 4 hours, with extremely low irritation. This invention solves the technical problem of low viscosity and poor foam performance in the rhamnolipin and alkyl glycoside compound system.

The application relates to the field of bridge-head filling embankment, and particularly discloses a foamed light soil bridge-head high filling embankment and a construction process thereof. The foamed light soil bridge-head high filling embankment comprises an isolation layer and a foamed light soil layer, and a protective wall is arranged in the foamed light soil layer. The foamed light soil layer is formed by pouring foamed light soil, and the foamed light soil comprises the following raw materials in parts by weight: 100 parts of Portland cement, 60-64 parts of water, 4-6.8 parts of foam, 21-35 parts of a modifier, and the preparation raw materials of the modifier comprise a cationic polymer and improved soil, and the weight ratio of the cationic polymer to the improved soil is 1: (6-20). The construction process is as follows: S1, excavating a roadbed and a slope; S2, laying the isolation layer; S3, pouring a stratum protective wall; S4, pouring the foamed light soil; S5, maintenance; and S6, repeating S3-S5. The application has the effects of improving the pouring uniformity of the foamed light soil and reducing the probability of uneven settlement of the embankment.

The application discloses a kind of UHPC with pottery clay-like plasticity and preparation method thereof, the formulation includes the following weight percentage components: gel material 140 parts-160 parts;Aggregate 140 parts-160 parts;Modified bentonite 20 parts-35 parts;Reinforcing fiber 3 parts-6 parts;Admixture 1 part-2.5 parts;The modified bentonite is sodium polyacrylate modified calcium-based bentonite.The application builds three-dimensional network structure by modified bentonite and gel material, significantly improves paste yield stress and thixotropy, keeps shape when standing, flows rapidly when shearing, can be bent, modified, shaped into standard workpieces using preset models;PVA / PP fiber and modified bentonite together enhance the density of interface transition zone, reduce the probability of microcrack initiation;Admixture system and modified bentonite produce ion-polymer-clay multiple adsorption, further delay hydration exothermic peak, widen shaping time window to more than 90 minutes, meet the needs of complex curved surface hand sculpture and thin-walled component integrated forming.

This invention relates to the field of polymer materials technology, specifically disclosing a highly branched polyarylene-piperidine cationic polymer, its preparation method, and its applications. The structure consists of a central branching unit and a linear unit. The central branching unit includes one or more of a branching agent residue MA unit, a piperidine cationic unit, and a non-functional monomer residue CA unit. The linear unit Lm is one or more of Lm1 and Lm2. Lm1 includes an aromatic ring monomer residue BA unit and a piperidine cationic unit, while Lm2 includes an aromatic ring monomer residue BA unit and a non-functional monomer residue CA unit. This invention utilizes the aforementioned highly branched polyarylene-piperidine cationic polymer. By using a branching agent with five branching sites, the entanglement between polymer molecular chains is improved, and the polymer molecular weight is increased. This suppresses excessive water absorption and swelling of the prepared anion exchange membrane, resulting in outstanding electrical conductivity and mechanical properties. It is applied to the preparation of anion exchange membranes in electrochemical energy conversion devices such as water electrolysis or fuel cells.

Compositions, methods, and systems for removing TiN hard masks from electronic circuit devices such as advanced patterned wafers are disclosed. The etching formulation comprises, essentially consists of, or comprises (a) at least one phosphorus-containing acid or a salt thereof, (b) at least one oxidizing agent, (c) at least one cationic polymer anticorrosion agent, and (d) at least one solvent.

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.