94 results about "Betaine" patented technology

The invention discloses a preparation method and application of a betaine-induced branch structure CoFe-based catalyst, and relates to a preparation method and application of a CoFe-based catalyst. The technical problem that an existing CoFe-based catalyst is poor in activity and stability is solved. The preparation method of the betaine-induced branched structure CoFe-based catalyst comprises the following steps: immersing clean foamed nickel into an isopropanol-water heterogeneous solution containing Co < 2 + > and Fe < 2 + > for in-situ growth, then introducing betaine to induce to form a branched structure, and anchoring an acidic group on the surface of a CoFe matrix to enhance the structural stability; the alkaline group faces an electrolyte interface under the action of an electric field, regulates interface charge distribution, selectively adsorbs part of Cl <-> and repels the other part of Cl <-> at the interface, so that chlorine evolution side reaction is inhibited. When the industrial-grade current density is 500 mA cm <-2 > during seawater hydrogen production, only 280 mV overpotential is needed, and stable operation can be carried out for more than 1000 h. The method can be used in the seawater hydrogen production field.

The present invention provides a dispersant for carbon nanotubes that can effectively disperse carbon nanotubes in a solvent. [Solution] The dispersant for carbon nanotubes contains polysaccharides and betaines.

This application discloses a composite oil displacement system and its preparation method, belonging to the field of oilfield development technology. The composite oil displacement system provided in this application includes rhamnolipin and betaine surfactant, wherein the rhamnolipin is a biosurfactant obtained by culturing *Pseudomonas aeruginosa*. Both the rhamnolipin biosurfactant and the betaine surfactant are heat- and salt-resistant; therefore, the composite oil displacement system prepared using the rhamnolipin biosurfactant and the betaine surfactant has good compatibility with high-temperature, high-salinity reservoirs, meaning it is suitable for such reservoirs. Therefore, it can significantly improve the oil displacement effect in high-temperature, high-salinity reservoirs.

The present application relates to the field of frother, in particular to a kind of copper flotation collector frother and preparation method thereof, by weight parts, including the following raw materials: N,N-dibutyl dithiocarbamic acid propyl cyanurate 100-120 parts, O-butyl-N-isobutyl thiopropyl carbamate 12-18 parts, xanthate 12-18 parts, phosphate ester polypropylene glycol ether 15-20 parts, modified betaine 5-8 parts, alcohol ether 3-5 parts, slime inhibitor 1-3 parts, alcohol ether carboxylate 2-5 parts, sorbitan monooleate 0.8-1.2 parts. Through the synergies of each raw material, the collector capacity, selectivity in copper flotation process can be effectively improved, and the reagent stability is good.

The present application belongs to the field of agricultural technology, and particularly relates to a composition for improving salt tolerance of plants and application thereof. The present application applies auxin (in the form of aqueous solution or powder), an aqueous solution of auxin and proline, an aqueous solution of auxin and betaine, an aqueous solution of auxin-proline-betaine ternary complex to plants by foliar spraying or root irrigation. Experiments have proved that auxin can quickly promote the sodium ion efflux of plants, reduce the sodium ion content in plants, and significantly improve the salt tolerance; the above-mentioned complex treatment can produce a synergistic effect, and further improve the growth of plants in a high-salt environment. The composition provided by the present application can be used as a plant salt tolerance promoter in field production, has a remarkable effect on enhancing the adaptability and stress resistance of plants to salt-affected land, has strong practicability, and has good popularization and application value.

An aqueous personal care composition that includes an anionic surfactant and an amphoteric or zwitterionic surfactant. The amphoteric or zwitterionic surfactant typically includes a betaine. The composition has a pH of about 3.0 to about 6.5 such that the amphoteric or zwitterionic surfactant is protonated, which helps provide a consumer-preferred viscosity of 2,500 mPa-s to 25,000 mPa-s, along with a variety of other benefits.

The application discloses an interface activity buffer additive and a pulverized coal deliming method, and a gradient proportioning composite acid system of nitric acid-hydrochloric acid-hydrofluoric acid is used in cooperation with an interface activity buffer additive (containing a specific zwitterionic betaine derivative and a citric acid buffer pair) to construct a H+ concentration gradient microenvironment on the surface of coal particles, target dissolution of ash minerals in a high concentration area, and protection of coal matrix in a low concentration area. The deliming rate is greater than 98%, acid consumption is reduced by 35%, and waste liquid is easy to handle up to the standard. The application solves the industry problems of poor selectivity, great coal damage and heavy secondary pollution of traditional pickling, and provides key technical support for efficient and clean utilization of high-ash coal.

This application discloses a high-temperature carbonized expandable gel foam and its preparation method, belonging to the field of fire prevention and extinguishing technology. The gel foam consists of 1-10% by mass of an expandable flame-retardant system, 0.81% by mass of a foaming system, 1.385% by mass of a gel system, and deionized water. The expandable flame-retardant system uses phytic acid as the acid source, gelatin as the gas source, and glucose as the carbon source. The foaming system is obtained by compounding lauramidopropyl betaine and alkyl glycosides. The gel system is prepared from sodium alginate, pectin, and L-calcium lactate. Sodium alginate and pectin can form a stable gel network with L-calcium lactate, ensuring the structural stability and long-lasting coverage of the foam at room temperature. In the expandable flame-retardant system, the acid source releases acidic groups at high temperatures, catalyzing the dehydration and carbonization of the carbon source to form a carbon skeleton. The gas source decomposes and produces gas, driving the skeleton to expand into a dense carbon layer, achieving oxygen and heat insulation. This gel foam rapidly covers the coal body at room temperature to isolate oxygen, and expands and retards at high temperatures, achieving the effect of inhibiting spontaneous combustion of coal.

Described herein is personal care composition comprising a surfactant blend comprising an anionic surfactant, such as sodium laureth sulfate, and a zwitterionic surfactant, such as cocamidopropyl betaine; at least one sensate; and a liquid carrier. Also disclosed herein are methods of making and using the personal care composition.

This invention relates to the field of galvanized steel wire technology, and proposes a high-strength galvanized steel wire and its preparation method. The preparation method of high-strength galvanized steel wire includes the following steps: activating the steel wire, then subjecting it to fluxing to obtain a pretreated steel wire; hot-dip galvanizing the pretreated steel wire, followed by passivation, to obtain high-strength galvanized steel wire; during fluxing, the flux consists of the following components by mass percentage: 20%~25% zinc chloride, 16%~20% ammonium chloride, 1.0%~2.0% additives, 1%~2% nickel chloride, 1%~2% lanthanum nitrate, 0.2%~0.5% ammonium bifluoride, with the balance being water; the additives are palmitamide propyl betaine and disodium lauryl sulfosuccinate. Through the above technical solution, the problem of insufficient wear resistance of galvanized steel wire in related technologies is solved.

The application discloses a kind of high adhesion hydrogel for electroencephalogram test and its preparation method and application, belong to biomedical engineering technical field.The hydrogel includes the following components crosslinked product: anionic monomer, cationic monomer, monomer and mutual penetration agent;The anionic monomer is any one of malic acid, gluconic acid, citric acid and lactic acid, cationic monomer is betaine or acetyl L-carnitine, monomer is N, N-dimethyl acrylamide, acrylic acid, sodium acrylate, 4-acryloyl morpholine or sodium acrylamidomethyl propane sulfonate, mutual penetration agent is sodium chloride aqueous solution or sodium chloride water-retaining agent solution.Preparation, cationic monomer is mixed and dissolved, vacuum drying, adding photo initiator mixing, then mutual penetration agent is added, and it is obtained by ultraviolet light crosslinking.The hydrogel of the application has high adhesion (adhesion strength reaches 203.22 kPa), high ion mobility and excellent biocompatibility, and the signal gain in EEG and ECG test reaches 2-3 times of traditional conductive paste, which can be widely used in medical conductive paste field.

It relates to a cleansing composition, comprising at least one sulfur-containing anionic surfactant, at least one betaine-derive amphoteric surfactant from sultains, at least a-hydroxy acid, at least one β-hydroxy acid; and at least one organic basifying agent selected from alkanolamines.

This invention relates to the field of biomedical technology, specifically disclosing the application of betaine in the preparation of drugs for treating autism. Through experiments using a valproic acid-induced mouse model of autism spectrum disorder, this invention found that betaine can significantly improve social impairments and repetitive, stereotyped behaviors in the model mice, and exhibits stable and reproducible effects in both 1-month-old and 2-month-old male offspring. This invention reveals a novel use of betaine in treating core behavioral deficits in autism spectrum disorder (ASD), providing a new source of natural active ingredients for the preparation of drugs for treating autism.

The application relates to a biological glass-containing wound-care ointment, a dressing and a preparation method, which comprises the following steps: uniformly stirring betaine and tannic acid to obtain a low glass transition temperature mixture; adding biological glass into a CaCl2 solution, uniformly stirring, centrifuging, and freeze-drying to obtain a pretreatment; melting vaseline, adding the vaseline into the pretreatment, uniformly stirring, and obtaining a hybrid ointment; adding the hybrid ointment into the low glass transition temperature mixture, uniformly stirring, and vacuum degassing to obtain the biological glass-containing wound-care ointment. The application can solve the problems of poor interface compatibility between biological glass particles and a polymer matrix, easy ion burst release or no release of the biological glass in the related art.

This document describes personal care compositions comprising surfactant blends, wherein the personal care compositions are free of sulfates and betaine, and wherein the personal care compositions comprise surfactant blends containing anionic surfactants and amphoteric surfactants, as well as at least one preservative. Methods for preparing and using the personal care compositions are also disclosed herein.

This invention relates to the field of medical reagent kit technology, and discloses a kit for determining L-proline betaine in serum. The kit is characterized by comprising reagent one, reagent two, and a standard substance solution. Reagent one comprises: tris, Prolin 300, potassium chloride, β-NAD+, and pH adjusted to 7.5 ± 0.05 with HCl or NaOH. Reagent two comprises: MOPSO, L-proline betaine dehydrogenase, magnesium acetate, Prolin 300, BSA, and ethylene glycol, with pH adjusted to 7.8. This invention uses enzymatic reagents and corresponding calibration and quality control for low-cost clinical testing, is simple to operate, and requires no sample preparation. It solves the problem that previous methods using liquid chromatography-tandem mass spectrometry (LC-MS / MS) required long processing times, complex sample preparation, and high costs, preventing the widespread clinical detection of PROB.

The present application relates to the technical field of natural product extraction, and particularly discloses a method for extracting betaine from sugar beet molasses. The method uses sugar beet molasses as raw material, and realizes high-yield and high-purity extraction of betaine through steps of optimizing dilution pretreatment, ceramic membrane microfiltration-nanofiltration membrane grading purification, continuous chromatography separation, low-temperature crystallization drying and the like. The core innovation is that specific-aperture ceramic membranes (80 nm) and nanofiltration membranes (200 Da) are combined, macromolecular impurities and salts are effectively removed under conditions of accurately controlled temperature, pressure and dialysis water addition, and precise separation is carried out in combination with a multi-column continuous chromatography system. The present application significantly improves the extraction efficiency and product purity of betaine, and the whole process has less wastewater discharge, thereby meeting the requirements of environmental protection and efficient manufacturing.

Provided is a photoresponsive material characterized by comprising nanoparticles having a perovskite-type crystal structure containing iodine at a site, and a shell-shaped ligand having a betaine group and partially coordinated to the nanoparticles, wherein the substance amount ratio of the iodine present at a site X on the surface of the nanoparticles is lower than the substance amount ratio of the iodine present at a site X inside the nanoparticles.

This invention relates to the field of oilfield development technology and discloses a modified nano-displacement agent and its application in oil well production enhancement. The agent comprises 5.0–10.0 wt% succinate gemini polyoxyethylene ether, 3.0–5.0 wt% erucamide propyl hydroxysulfonate betaine, 10.0–20.0 wt% polyether-modified silicone oil, 1.0–3.0 wt% sodium xylenesulfonate, 1.0–2.0 wt% 1,2-propanediol, and 60.0–80.0 wt% deionized water. During preparation, a phase-conditioning fluid is added via high-shear emulsification combined with a cooling jet to obtain a nanoscale dispersion system. This invention utilizes the combination of gemini surfactant and betaine to improve phase stability under high temperature and high salinity conditions and effectively reduce interfacial tension; the steric hindrance of the modified silicone oil reduces formation adsorption losses; and the nanoscale droplets can penetrate deep into the micro- and nano-pore throats of low-permeability formations to strip crude oil, alleviating injection difficulties and synergistically achieving increased oil well production.

This invention relates to the field of energy storage materials technology, specifically disclosing a graft-modified polyethylene dielectric material, its preparation method, and its applications. The material is prepared by chemically grafting 1-(3-thiopropyl)-2-vinylpyridine betaine (SPV) into the polyethylene backbone. The pyridine rings in the SPV side groups, through their conjugated electron effect, introduce localized energy level structures into the nonpolar polyethylene matrix, forming distributed deep-trap charge-capturing regions. This significantly suppresses the migration and collisional ionization of charge carriers under high electric fields, effectively improving the material's breakdown field strength and high-field service stability. Simultaneously, the grafting modification method does not disrupt the regular arrangement of the polyethylene backbone, thus maintaining the inherent low dielectric loss, good flexibility, and processing performance of polyethylene. It is particularly suitable for the preparation of high-energy-density film capacitors and has broad application prospects in electrical equipment operating under extreme conditions such as new energy vehicles, aerospace, and smart grids.

This invention relates to the field of cultural relic preservation technology, and provides a composite corrosion inhibitor for cleaning and removing rust from iron cultural relics, a cleaning and rust removal agent, and their applications. The composite corrosion inhibitor provided by this invention comprises phytic acid and cocamidopropyl betaine, with a mass ratio of phytic acid to cocamidopropyl betaine of 1:1 to 20. The composite corrosion inhibitor provided by this invention is simple to obtain, environmentally friendly, and requires only a small dosage. It effectively inhibits the corrosion of the iron matrix in iron cultural relics by the cleaning solution, improving the safety of the cleaning and rust removal process; moreover, it does not affect the cleaning and rust removal effect of the cleaning solution on iron cultural relics, ensuring rust removal efficiency. In summary, the composite corrosion inhibitor provided by this invention combines safety, effectiveness, and environmental friendliness, and has broad application prospects in the field of cultural relic preservation.

This invention provides a method for synthesizing zwitterionic copolymers, comprising the following steps: a betaine-based zwitterionic monomer and a 2-methacryloyloxyethyl phosphocholine (MPC) monomer are subjected to a free radical copolymerization reaction in a solvent to obtain the zwitterionic copolymer; wherein the betaine-based zwitterionic monomer is selected from carboxybetaine methacrylate (CBMA) monomer or sulfobetaine methacrylate (SBMA) monomer; the free radical copolymerization reaction is selected from reversible addition-fragmentation chain transfer (RAFT) polymerization or free radical polymerization (FRP); when the free radical copolymerization reaction is RAFT polymerization, the copolymerization reaction is carried out in the presence of both an initiator and a chain transfer agent (CTA); when the free radical copolymerization reaction is FRP, the copolymerization reaction is carried out in the presence of an initiator without the addition of a chain transfer agent. This invention can be widely applied in fields such as in vitro diagnostic sealing agents, and is a new generation of fully synthetic biomaterial solutions to replace animal-derived sealing agents and traditional PEG coatings.

This invention relates to the field of oil and gas field drilling and cementing technology, and in particular to a broad-spectrum anti-fouling isolation fluid for ultra-deep well cementing and its preparation method, comprising the following components: a zwitterionic nanocomposite polymer, a composite flushing agent, a weighting agent, and water; the zwitterionic nanocomposite polymer is an organic-inorganic hybrid copolymer with surface-silanized modified nano-silica as an inorganic crosslinking core, and polymeric segments copolymerized and grafted onto the surface of the inorganic crosslinking core; the monomers of the polymeric segments include N,N-dimethylacrylamide, 2-acrylamido-2-methylpropanesulfonic acid, N-vinylpyrrolidone, dimethyl diallyl ammonium chloride, and isopentenyl polyoxyethylene ether; the composite flushing agent contains alkyl glycosides and alkyl sulfobetaine surfactants.

One aspect of the present invention is concerned with a composition for the manufacture of a hydrogel material. The composition has N-(3-Sulfopropyl)-N-methacroyloxyethyl-N,N-dimethylammonium betaine (DMAPS) serving as a backbone of the hydrogel material, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) serving as a conductive component, and at least one crosslinking agent.

The application discloses a temperature-resistant and salt-resistant foam stabilizer for carbon dioxide oil displacement and a preparation method thereof, and belongs to the technical field of chemical agents for carbon dioxide oil displacement. The temperature-resistant and salt-resistant foam stabilizer for carbon dioxide oil displacement comprises, in mass fraction, 0.8-1.2% of sulfobetaine-fluorocarbon copolymer, 0.12-0.2% of fatty alcohol polyoxyethylene ether sulfonate, 0.2-0.3% of modified nano ZnO, 0.08-0.12% of quaternized hydroxypropyl starch, 0.05-0.10% of aminotri (methylene) phosphonic acid, 0.05-0.08% of carboxymethyl modified xanthan gum and the balance of water, wherein the modified nano ZnO is prepared by coating nano ZnO with polydopamine. By limiting the component composition of the foam stabilizer, the problems of the existing foam stabilizer, such as insufficient salt resistance, poor anti-agglomeration, insufficient high-temperature resistance and poor degradation resistance, can be effectively solved. The components have strong synergism, the preparation process is simple and industrialized, the agent has good compatibility, the reservoir has low damage, the foam stability of CO2 and the oil recovery rate can be remarkably improved, and the foam stabilizer has high practicability.

This invention provides a polyamplifier-based cell cryopreservation protectant and a method for preparing a polyamplifier-based cell cryopreservation solution, as well as their applications. It relates to biomedical materials technology and the field of cell cryopreservation, aiming to solve problems such as low cell recovery rates and short cryogenic storage times in existing cell cryopreservation technologies. The polyamplifier-based cell cryopreservation protectant comprises polyacrylic acid, betaine, and graphene oxide linked by chemical bonds. The mass ratio of polyacrylic acid to betaine is 10:1–2:1, and the total mass of polyacrylic acid and betaine to the mass of graphene is 1:2–10:1. The polyamplifier-based cell cryopreservation protectant provided by this invention can not only reduce cell permeability damage by regulating osmotic pressure, but also improve cryopreservation efficiency, effectively inhibit ice crystal formation and growth, and increase cell survival rate. Due to its excellent cell protection properties and good stability, this protectant can also be used in the cryopreservation of stem cells, immune cells, and other cells, possessing significant socio-economic value.

The application discloses a silage fermentation accelerator based on enzyme and bacteria cooperation and a preparation method thereof, and belongs to the technical field of feed preparation, and comprises the following steps: S1: taking sterilized selenium-rich wheat bran and sterilized yeast hydrolysate as carriers, mixing cellulase, xylanase, ferulic acid esterase, phytase and tannase to prepare a composite carrier enzyme; mixing composite bacteria powder and selenium-rich yeast powder to prepare an active mixture; mixing xylo-oligosaccharide, betaine and vitamin E to prepare active material to be embedded; S2: taking chitosan and sodium alginate as a skeleton, mixing N-isopropyl acrylamide, ammonium persulfate and N,N'-methylene bisacrylamide, and in-situ polymerizing to construct a temperature-sensitive hydrogel, and then performing dialysis, freeze-drying and grinding to prepare a temperature-sensitive embedding liquid; S3: rotating and shearing the active material to be embedded and the temperature-sensitive embedding liquid to prepare embedding suspension liquid to be sprayed, and then performing continuous spray embedding to prepare temperature-changing microcapsule particles, namely the silage fermentation accelerator based on enzyme and bacteria cooperation; and the application promotes silage fermentation.

Quick dilution and excellent rheology can be achieved with a hydratable concentrated surfactant composition comprising: a) from 30 to 50 wt % of anionic surfactant selected from sodium laureth ether sulphate, sodium pareth ether sulphate and mixtures thereof, by weight based on the total weight of the composition; b) from 4 to 12 wt %, of a co-surfactant, which is selected from a betaine, cocamide monoethanolamide and mixtures thereof, based on the total weight of the hydratable concentrated surfactant composition; c) from 0.2 to 3 wt % of a phase modifier, by weight of the total composition, which is sodium benzoate; d) from 2 to 7 wt % of a viscosity modifier, by weight of the total composition, which is an inorganic electrolyte; e) from 10 to 60% by weight water by weight of the total composition; wherein the surfactants are in a lamellar phase; and wherein the hydratable concentrated surfactant composition has a pH of from 3 to 6; and wherein the hydratable concentrated surfactant composition has a viscosity of from 8,000 to 200,000 mPas−1 (cps), when measured at 30° C. on a Brookfield DV2T using a Spindle RV-05 at 20 rpm for 60 seconds on a Helipath stand; and wherein the weight ratio of a) the anionic surfactant to b) the co-surfactant is from 3:1 to 10:1, wherein the weight ratio of sodium benzoate (c) to total surfactant (a)+(b) is 1:5-1:75, preferably from 1:10-1:65, more preferably 1:15-1:50.

The present application relates to the technical field of oil exploitation aids, in particular to a hydrophobic associating polymer containing betaine structure and a preparation method and application thereof.The hydrophobic associating polymer containing betaine structure (PADA) provided by the present application is composed of acrylamide structural units, diacetone acrylamide structural units and hydrophobic monomer ANMSC-16 structural units with sulfobetaine structure, and exhibits excellent salt thickening performance.It is tested that the PADA provided by the present application exhibits excellent temperature resistance and shear strength in sodium chloride solution, magnesium chloride solution and calcium chloride solution.Because of the reversibility of the associated structure, the polymer exhibits excellent shear recovery performance in the above salt solutions, and the viscoelasticity increases with the increase of the salt solution concentration.Therefore, the hydrophobic associating polymer containing betaine structure provided by the present application can be used as a temperature-resistant and salt-resistant thickening agent, and has important potential in enhanced oil recovery in oil and gas fields.

The application relates to the technical field of biological medicine, and discloses a preparation method of a liposome with a pH response type membrane fusion effect and application of the liposome. The pyridium betaine-terminated lipid molecule provided by the application can be quickly and reversibly protonated in a weak acid microenvironment of a tumor, the surface charge of the liposome is changed from negative to positive, and the precise switch of the membrane fusion behavior is realized; the self-adaptive fusion liposome constructed based on the pyridium betaine-terminated lipid molecule successfully converts the non-specific toxicity risk of the traditional fusion liposome into a space-limited intelligent response, remains stable and inert in blood circulation (pH=7.4), and specifically activates the membrane fusion at a tumor site, realizes direct cytoplasmic delivery of a drug and avoids lysosome degradation; the STING nano agonist constructed by loading the nano composite of a STING pathway agonist and a divalent metal ion on the platform exhibits a strong pH-dependent anti-tumor immune activation effect in vitro and in vivo, and significantly inhibits tumor growth while the systemic toxicity is extremely low.