180 results about "Co solvent" patented technology

One example of a jettable antioxidant formulation is used for three-dimensional (3D) printing. The jettable antioxidant formulation includes an antioxidant blend; a surfactant, a dispersant, or a combination thereof; a water-soluble or water-miscible organic co-solvent; and water. The antioxidant blend consists of a primary antioxidant and a secondary antioxidant.

The invention provides a water-borne epoxy resin composite coating and a preparation method thereof, and the water-borne epoxy resin composite coating comprises the following components in parts by mass: 70-90 parts of a water-borne epoxy emulsion component A; 10-30 parts of a curing agent component B; wherein the component A of the waterborne epoxy emulsion is prepared from the following raw materials in parts by mass: 50 to 70 parts of self-emulsifying epoxy resin, 5 to 10 parts of hydrophilic modifier, 15 to 25 parts of pigment filler, 2 to 5 parts of dispersion stabilizer, 1 to 3 parts of cosolvent and 5 to 10 parts of deionized water. Self-emulsifying modification of resin molecules is realized by adopting nonionic polyether grafted self-emulsifying epoxy resin and matching with a hydrophilic modifier with a specific hydroxyl value, an emulsifier does not need to be added, and the viscosity of a coating system is reduced from the molecular level, so that the solid content of the component A of the waterborne epoxy emulsion is more than or equal to 70%, the viscosity is less than 200mPa. S, and the technical bottlenecks of high solid content and low viscosity are broken through; and the requirement for single-time thick coating construction is met, the construction efficiency is greatly improved, and construction period prolonging and cost increasing caused by multiple times of construction are avoided.

This invention relates to compositions and methods for cleaning and peeling. This disclosure provides a composition for cleaning or peeling materials from a substrate. The composition includes a primary solvent and a co-solvent. The co-solvent includes one or more caprolactam-derived solvents.

A three-dimensional printing kit includes a substantially colorless fusing agent and a color assist agent. The fusing agent includes a liquid vehicle including water, a co-solvent, and an amino acid stabilizer. The fusing agent further includes an infrared (IR) absorbing pigment dispersion including an IR absorbing pigment present in an amount ranging from about 0.01 wt % active to about 1.6 wt % active, based on a total weight of the fusing agent. The color assist agent includes a liquid vehicle including water and a plasticizing co-solvent, and a dye dissolved in the liquid vehicle. Also disclosed is a method of making a colored 3D printed object.

The invention discloses a preparation method and application of a high-flux, high-interception and structure-controllable asymmetric ultrafiltration membrane, and belongs to the technical field of ultrafiltration membranes. The preparation method of the asymmetric ultrafiltration membrane comprises the following steps: mixing 20-30 parts by weight of an ethylene-vinyl acetate copolymer, 40-70 parts by weight of a good solvent, 4-20 parts by weight of a pore-foaming agent, 10-25 parts by weight of a cosolvent and 0-10 parts by weight of a plasticizer, heating and stirring, standing and defoaming to obtain a homogeneous membrane casting solution; coating a substrate with the membrane casting solution and then carrying out pre-evaporation treatment; and immersing the pre-evaporated material into a coagulating bath to carry out phase separation and solvent exchange for curing, and washing to obtain the ultrafiltration membrane. Effective preparation of the asymmetric ultrafiltration membrane with high flux, high interception and controllable structure is realized, and the preparation method is simple to operate, clear in process, high in practicability and beneficial to product industrialization.

The application discloses an intermediate processing liquid for an electroless nickel immersion gold (ENIG) production line and a chemical gold preparation method. The intermediate processing liquid is applied between the electroless nickel plating and immersion gold processes, and comprises (a) a pH buffer and a metal ion complexing agent: a total concentration of 50-150 g / L; (b) an adsorptive corrosion inhibitor: a concentration of 0.5-5.0 g / L; (c) a low-foam non-ionic surfactant: a concentration of 0.01-10 g / L; (d) an auxiliary antioxidant: a concentration of 0.5-30 g / L; (e) a dissolving agent: a concentration of 1-50 ml / L; (f) a pH regulator: an appropriate amount, which is added to maintain the pH value of the intermediate processing liquid at 4.0-6.5; and (g) deionized water: a balance, so that the concentrations of the above components reach the set target values; and the intermediate processing liquid has a design use temperature of 20-45 DEG C. The intermediate processing liquid removes residual nickel ions on the board surface and in micropores through strong complex cleaning, and blocks the pollution to the subsequent gold tank; meanwhile, the preferential adsorption of the corrosion inhibitor molecules at the nickel layer grain boundaries forms a controllable molecular-level protective film, effectively adjusts the immersion gold replacement reaction kinetics, and prevents the occurrence of intergranular corrosion (black plate).

A complex consisting of lipoic acid or a salt thereof, a chelating agent such as a salt of ethylene diamine tetraacetic acid (EDTA) or analogous compounds and an ester of ascorbic acid with long-chain fatty acids, in particular ascorbyl palmitate inhibits the pigmentation of teeth induced by chlorhexidine and salts thereof. In addition to the depigmenting complex, the formulations of the invention, in the form of gels, mouthwashes, toothpastes or periodontal sprays, may contain other ingredients such as hyaluronic acid or hyaluronates, glycerophosphocholine, sweeteners, flavourings, buffering agents, viscosifying agents, mucoadhesive and filming agents, solvents, co-solvents, surfactants.

This invention discloses a method for preparing dihydroquercetin oil-soluble microcapsules based on a microfluidic chip, along with its applications. The preparation method involves: uniformly dissolving dihydroquercetin and a co-solvent under heating conditions to obtain a dispersed phase; uniformly dissolving a surfactant and oil under heating conditions, followed by adding lactobacillus fermentation lysate to obtain a mixture; subjecting the mixture to high-pressure homogenization to obtain a continuous phase; using a microfluidic chip, pumping the dispersed and continuous phases into corresponding channels of the chip via a syringe pump; at the chip's intersection, shearing, compressing, and encapsulating the dispersed phase in the continuous phase to form monodisperse dihydroquercetin oil-soluble microcapsules. The method employed in this invention utilizes the precise fluid control capabilities of a microfluidic chip to achieve uniform and controllable microcapsule particle size and structure, ensuring continuous and repeatable processing with high encapsulation efficiency, and effectively improving the solubility and stability of dihydroquercetin.

The application provides a soluble liquid agent containing flonicamid and acetamiprid, and a preparation method and application thereof. The soluble liquid agent is composed of flonicamid, acetamiprid, a solvent, a cosolvent, a surfactant, a pH regulator, a penetration enhancer and ethanol. The application reduces ecological toxicity by selecting suitable auxiliaries, has the advantages of small drift, slow evaporation, strong adhesion, good spreading, wetting and adhesion effects on targets, long retention time, rainwater erosion resistance, and improved pesticide penetration, so that the pesticide can act faster. In addition, the soluble liquid agent prepared by the application can meet the requirements of pest control under different water qualities and meet the requirements of field application under complex climate conditions. The soluble liquid agent of the application is an agricultural insecticide with good insecticidal effect, simple production process and no environmental pollution.

An inkjet ink that includes (A) a terpene phenol resin, (B) a solvent system containing (B1) ethanol and (B2) a cosolvent, and (C) an amine modified silicone that includes a silicone backbone (main chain) and one or more organoamine side chains attached to the silicone backbone, the inkjet ink being characterized by extended decap times and superior adhesion to a variety of substrates, A printed article including the inkjet ink in dried form, and a method of forming a printed image with a thermal inkjet printhead are also provided.

The invention relates to the technical field of oral care compositions, in particular to an oral care composition and a preparation method and application thereof.The oral care composition comprises a first composition and a second composition, the first composition comprises an anti-sensitive agent, a cosolvent, a first thickening agent, a surfactant and a first auxiliary, and the second composition comprises an anti-sensitive agent, a cosolvent, a second thickening agent, a surfactant and a second auxiliary; the first composition comprises phthalimide peroxyhexanoic acid, a cosolvent, a first thickening agent, a first auxiliary agent and deionized water, the second composition comprises phthalimide peroxyhexanoic acid, a cosolvent, a second thickening agent, a second auxiliary agent and deionized water, at least one of the cosolvent, the first auxiliary agent and the second auxiliary agent contains a flavoring agent, and the first composition and the second composition are separately stored before use. The anti-sensitive agent is prevented from being in contact with the phthalimide peroxyhexanoic acid before use. According to the invention, the first composition and the second composition are respectively and independently stored, so that natural decomposition and activity attenuation of phthalimide peroxycaproic acid in the shelf life of the product are inhibited, and the product is ensured to retain high effective active oxygen content after being stored for a long time.

The invention relates to a preparation method of 3-(piperazine-1-yl) propane-1-sulfonic acid, and relates to the technical field of organic chemical synthesis. The preparation method of the 3-(piperazine-1-yl) propane-1-sulfonic acid comprises the following steps: feeding and stirring, dropwise adding and mixing, carrying out temperature-controlled reaction, and purifying and drying. The cosolvent activates amino groups and inhibits side reactions, complete reaction of the substrate 1, 3-propane sultone is ensured through excessive piperazine, generation of by-products is reduced in the dropwise adding process, the temperature control reaction equilibrium rate is achieved, purification treatment is conducted through the pulping agent in the final purification and drying stage, reaction impurities are effectively removed, and it is finally guaranteed that the product purity meets the pharmaceutical grade requirement; the whole technological process is simple, the production period is shortened, and labor and time cost is reduced.

The invention relates to the technical field of chemical auxiliaries for oilfield exploitation, and particularly discloses an environment-friendly nano solubilizer for an oilfield and a preparation method of the environment-friendly nano solubilizer. A preparation method of an environment-friendly nano solubilizer for an oil field comprises the following steps: S1, uniformly mixing N, N-dimethylformamide and hydroxyethyl cellulose in an inert atmosphere, then adding an organic base catalyst, uniformly mixing, heating to 35-45 DEG C, adding aromatic acyl chloride, heating to 75-85 DEG C, reacting for 4-6 hours, cooling, carrying out solid-liquid separation, washing, drying and crushing to obtain modified cellulose; s2, uniformly mixing a cosolvent, xanthan gum, a salt solution and a composite surfactant at 30-40 DEG C, adding the modified cellulose, uniformly mixing, and dispersing to obtain the environment-friendly nano solubilizer. The environment-friendly nano solubilizer prepared by the invention has relatively low interfacial tension and relatively high viscosity reduction rate.

The invention discloses a high-alkali-resistance textile degreaser as well as a preparation method and application thereof, and relates to the technical field of textile pretreatment. The method comprises the following steps: S1, carrying out a neutralization reaction on fatty acid methyl ester sulfonic acid and a mixed alkali solution of sodium hydroxide and alkanolamine, and controlling the pH value of a reaction endpoint to be 6.0-7.5 to obtain a mixed salt of sodium fatty acid methyl ester sulfonic acid and alkanolamine; s2, adding an alkyl polyglucoside aqueous solution into the mixed salt obtained in the step S1 to form mixed micelles; s3, fatty acid ester ethoxylate and a bio-based cosolvent are added into the mixed micelle obtained in the step S2, homogenization treatment is conducted, and homogeneous microemulsion is obtained; and S4, cooling the microemulsion obtained in the step S3, adding a chelating dispersant and water, and uniformly mixing to form the high-alkali-resistance textile degreaser. The textile degreaser prepared through dication modification and micelle recombination has good alkali resistance, excellent low-temperature water solubility and full-bio-based environmental protection characteristics, and is suitable for pretreatment of textiles such as cotton, polyester and the like.

Examples of the present disclosure are directed toward fusing agent compositions. An example fusing agent composition includes a radiation absorber, a co-solvent mixture, and a balance of water. In various examples, the radiation absorber is present in an amount ranging from about 0.005 weight percent (wt %) to about 1.0 wt % of a total weight of the fusing agent composition, wherein the radiation absorber absorbs radiation at a wavelength range within the visible light spectrum.

This application provides an aramid slurry and its preparation method, a battery separator and its preparation method, and its application. The aramid slurry comprises aramid fibers, a non-protic strongly polar solvent, and a co-solvent. The co-solvent has a pH value of 5–7.5 at 25°C and 101.325 kPa; the rotational viscosity of the aramid slurry is 500 mPa·s–5000 mPa·s. The aramid slurry of this application eliminates the need for strong alkaline co-solvents such as sodium hydroxide or potassium hydroxide to dissolve the aramid, avoiding the damage to aramid molecules caused by such co-solvents, extending the operating time window, and improving the stability of the slurry. The slurry can be stably stored for more than 168 hours, reducing the difficulty of production operations and the investment in personnel and equipment, thus facilitating large-scale production. Furthermore, the rotational viscosity of the aramid slurry formed in this application has a suitable range; within this range, the slurry not only exhibits good stability but also provides ideal separator performance.

The application provides a cable cooling liquid and a preparation method and application thereof, and belongs to the technical field of cooling liquids, and comprises the following raw materials: perfluorobutyl methyl ether, 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether, a plasticizer, a cosolvent, a chelating agent, a retarder, a flame retardant and an antioxidant. The cooling liquid prepared by the technical scheme provided by the application can achieve the purposes of excellent heat conduction capacity and corrosion resistance to cable materials.

The present invention relates to a blow-potting (BFS) sealed single dose container comprising a pharmaceutical composition of an aqueous solution for oral administration, said composition comprising levothyroxine or liothyronin or a pharmaceutically acceptable salt thereof, water and one or more co-solvents and being alcohol-free, exhibiting a pH of 8.1 to 8.7, an average density of 1.18 to 1.23 g / ml (g / mL) and a viscosity of 20 to 60 cps, preferably, the pharmaceutically acceptable salt is levothyroxine sodium.

The application provides a long-acting external use efinaconazole composition, a preparation method and application, and belongs to the technical field of pharmaceutical compositions.The long-acting external use efinaconazole composition comprises the following components in percentage by weight: efinaconazole 0.5-3%, a film forming agent 3-7%, a gel agent 2-3%, a plasticizer 3-7%, a cosolvent 0.78-1.56% and a solvent in a residual amount.The application forms a eutectic mixture of efinaconazole and lactic acid, improves the solubility and permeability of the active ingredient, dissolves in the solvent of an ethanol system, and adds the film forming agent and the plasticizer, so that a drug depot is formed on the surface of the skin through the film forming principle, the drug is released slowly, the clinical compliance is improved, the frequency of drug administration is reduced, the bioavailability of the drug in the stratum corneum is increased, the effectiveness and safety of the drug can be improved, the basic theory of pharmacoeconomics is met, and the clinical value of the product is improved.

The invention discloses a biological tissue sample preparation sleeve solution, and belongs to the technical field of biological sample preparation. The stationary liquid comprises: 8-12% of an aldehyde cross-linking agent; 1-3% of a phosphate buffer system; and the balance of purified water. The dehydration liquid comprises the following components: 55-70% of an alcohol solvent; 10 to 20 percent of isopropanol; 10-20% of an ester organic solvent; 0.5 to 2 percent of a non-ionic surface active agent; the transparent liquid comprises the following components: 50-70% of a polyol compound; 10-20% of an ether cosolvent; 10 to 30 percent of isopropanol; the refractive index of the transparent liquid is 1.47 to 1.52; the cleaning solution comprises the following components: 60-85% of a polyol solvent; 10-20% of an ether solvent; 1-3% of an anionic surfactant; 0.1-1% of a complexing agent; and the balance of purified water. Tissue shrinkage is effectively reduced, the cell structure is kept complete, the transparency effect is improved, and microscopic observation and dyeing analysis are facilitated.

This invention belongs to the field of veterinary drugs and discloses a method for preparing difloxacin suspension injection, comprising the following steps: Step 1: Difloxacin is added to an aqueous solution containing gluconolactone to prepare a difloxacin solution; Step 2: A crystallization inhibitor is added to the difloxacin solution in Step 1; Step 3: The solution is dispensed into glass vials for injection, sealed, and sterilized with high-temperature steam; Step 4: The sterilized injection solution is immediately subjected to cold water immersion or cooled to room temperature in air for leak testing and crystallization, simultaneously obtaining difloxacin injection solution. Based on previous research results, this invention further proposes that, in the further optimization process, gluconolactone is used as a co-solvent for difloxacin, dissolved by heating, dispensed into injection bottles, sterilized at high temperature, and then recrystallized after cooling to obtain a suspension with small crystal particle size. This process is suitable for large-scale production.

The invention relates to the technical field of new drugs, in particular to a clevidipine butyrate concentrated solution and a preparation method thereof, and the composition contains clevidipine butyrate, a solubilizer, a cosolvent, a pH regulator and water for injection. Injection oil is abandoned, so that the requirements of lipid metabolism defect patients are met; no phospholipid is used in the prescription, safety risks such as hemolysis, immunoreaction and long-term toxicity and stability problems such as oxidative degradation are avoided, after phospholipid is removed, the clevidipine butyrate preparation can tolerate excessive hot-press sterilization, the sterility level guarantee degree is higher, the state of the clevidipine butyrate preparation is converted into a true solution system from a micelle system, and the stability of the clevidipine butyrate preparation is improved. The solubilizer and the cosolvent are combined, so that the solubility of clevidipine butyrate is greatly improved, dichloromethane, chloroform and other organic solvents with large toxic and side effects are not needed, the toxicity of the medicine is reduced, the stimulation to blood vessels is small, and the adverse reaction of the medicine is reduced; and the preparation method is simple and easy to amplify, and production amplification is facilitated by selecting a production process of a common injection.

The utility model relates to the technical field of modified asphalt production, in particular to a cosolvent feeding device. The cosolvent feeding device comprises a heating tank and a solid-phase storage tank, the heating tank is connected with a solid-liquid mixing tank through a filter, the solid-liquid mixing tank is connected with a reaction kettle through a premixing tank, the reaction kettle is connected with a development tank through a colloid mill, and the solid-phase storage tank is connected with the premixing tank through a screw feeder. And a heating tank coil pipe is arranged in the heating tank and is connected with a liquid-phase cosolvent inlet pipeline. According to the device, reasonable pipeline connection and feeding equipment are arranged, when a solid phase is independently fed, the solid phase cosolvent in the solid phase storage tank is accurately conveyed to the solid feeder through the spiral feeder, then dispersed feeding is performed through the solid feeder, and smooth feeding is ensured; when solid and liquid need to be added, the liquid-phase cosolvent is firstly conveyed to the premixing tank, then the solid and the liquid are mixed in the solid-liquid mixing tank and then are added together, the whole feeding process is compact, the feeding efficiency is greatly improved, and the production period is shortened.

The invention relates to the technical field of cosmetics or skin external preparations, in particular to a glucosylrutin-vitriol composition containing a supramolecular solvent and preparation and application thereof.The composition is prepared from, by mass, 25%-40% of the supramolecular solvent, 8%-10% of vitriol, 0.01%-0.5% of glucosylrutin, 0.1%-5% of an auxiliary additive, 0.01%-0.05% of an antioxidant, 0.4%-2% of 1, 2-pentanediol, 0.1%-0.5% of 1, 2-pentanediol, 0.1%-0.5% of a stabilizer and the balance water. 0.4-2% of 1, 2-hexanediol and the balance of deionized water; the supramolecular solvent comprises a hydrogen bond donor, a hydrogen bond acceptor and a functional cosolvent, the functional cosolvent comprises a deep eutectic solvent and a bio-based solvent, and the total addition amount of the functional cosolvent is 10-15% of the total mass of the hydrogen bond donor and the hydrogen bond acceptor. By optimizing component selection and matching process design, the composition has the advantages that the skin permeability is obviously improved, and the anti-wrinkle, firming and skin repairing effects are realized.

The invention relates to the field of technical schemes, in particular to a swelling agent for removing a cured addition type high-temperature vulcanized silica gel thin layer and a preparation method of the swelling agent. The solvent comprises the following raw materials in percentage by weight: 50-90% of a main solvent; 13-60% of an auxiliary solvent; 3-10% of a cosolvent; 0.1-1% of an active promoter; the balance is a processing aid; the activity promoting material is an active agent containing fatty alcohol polyoxyethylene ether; the main solvent is petroleum ether; the auxiliary solvent is composed of 120 # solvent oil and light paraffin oil; the cosolvent is an alcohol solvent; the sum of the weight percentages of the main solvent, the auxiliary solvent, the cosolvent, the activity accelerant and the processing aid is equal to 100%, and the obtained swelling agent has better stability and has a better removal effect when being used for removing a cured addition type high-temperature vulcanized silica gel thin layer.

The invention provides an alkaline cleaning agent for a semiconductor corrugated pipe and a cleaning and drying method. The cleaning agent is prepared from the following components in percentage by weight: 5 to 15 percent of inorganic alkali, 2 to 10 percent of N-dodecyl-N '-carboxymethyl-aza-18-crown-6 betaine, 2 to 8 percent of alkyl glycoside, 0.1 to 2 percent of alkynediol surfactant, 2 to 5 percent of dispersing agent, 1 to 3 percent of complexing agent, 1 to 3 percent of cosolvent and ultrapure water. The N-dodecyl-N '-carboxymethyl-aza-18-crown-6 betaine, the alkyl glycoside and the alkyne diol surfactant are selected and compounded, and a cleaning system which is efficient in cleaning, free of residues, low in foam and odorless is constructed; 3-methoxy-3-methyl-1-butanol is introduced to enhance the detergency in a cleaning stage, and the problem of water residue in wrinkles of the corrugated pipe is thoroughly solved through a'solvent replacement 'principle in a drying stage, so that absolute drying without water stains and spots is realized. And the device is particularly suitable for batch cleaning of semiconductor corrugated pipes with extremely high cleanliness requirements.

The application discloses a preparation method of low-chlorine high-purity bisphenol A type liquid epoxy resin. The method comprises the following steps: mixing raw materials containing epichlorohydrin, bisphenol A and a cosolvent, adding a catalyst A, and performing etherification reaction under low-temperature condition of not more than 50 DEG C; recovering unreacted epichlorohydrin in the system after the reaction is completed to obtain an etherification product; mixing the etherification product with a solvent, adding a catalyst B, and performing ring-closing reaction under low-temperature condition of not more than 50 DEG C; performing extraction separation on the obtained reaction product to obtain an organic phase; and performing desolventizing treatment on the organic phase to obtain the bisphenol A type liquid epoxy resin product. The total chlorine content of the obtained bisphenol A type liquid epoxy resin product is low, the viscosity is low, the purity is high, the quality is good, the preparation method is simple, the process flow is short, and the cost is low.

The invention discloses an emulsion type paraffin remover for a high wax content oil well, which comprises the following components in percentage by mass: 15-25% of aromatic hydrocarbon; 5%-15% of aliphatic hydrocarbon; 15%-20% of a cosolvent; 1%-1.5% of a mutual solvent; 30%-45% of purified water; 10%-15% of a compound emulsifier; wherein the aromatic hydrocarbon, the aliphatic hydrocarbon, the cosolvent and the mutual solvent form an oil-phase mixed solution, the purified water and the compound emulsifier form a water-phase mixed solution, the oil-phase mixed solution accounts for 40-60%, and the sum of the proportions of the oil-phase mixed solution and the water-phase mixed solution is 100%. The wax dissolving rate of the emulsion type paraffin remover can reach 0.0305 g / min and is higher than the Chinese petrochemical standard (0.0255 g / min) by 10%-20%, and the stabilizing time under the normal temperature condition is 24 hours or longer. When the addition amount is 500 ppm, the paraffin control rate reaches 22.42%, the viscosity reduction rate reaches 42.65%, the paraffin control and viscosity reduction effects are good, and the cost can be saved by 35% compared with a common oil-based paraffin remover.

An electrolyte for a lithium metal battery, comprising a lithium salt and a non-aqueous organic solvent, wherein the non-aqueous organic solvent comprises a main solvent and a co-solvent distinct from the main solvent.