1137 results about "Nonionic surfactant" patented technology

The invention discloses a reaction buffer solution for improving endotoxin detection sensitivity of a recombinant tachypleus amebocyte lysate, a kit containing the reaction buffer solution and application of the reaction buffer solution. The reaction buffer solution comprises the following components: a Tris-HCl buffer solution, magnesium ions, sodium chloride, cane sugar, ethylene glycol diethyl ether diamine tetraacetic acid, a nonionic surfactant and cyclodextrin or a derivative thereof. The invention also discloses a preparation method of the reaction buffer solution and a kit containing the reaction buffer solution. When the reaction buffer solution or the kit is used for detecting the endotoxin of the recombinant tachypleus amebocyte lysate, the sensitivity of the recombinant tachypleus amebocyte lysate for detecting the endotoxin can be improved by one order of magnitude, the lowest detection limit can reach 0.0005 EU / ml, the reaction buffer solution or the kit has strong anti-interference capability and short reaction time, and the detection efficiency is greatly improved.

The invention provides a composite surfactant for oil displacement of a hypersalinity oil reservoir and a preparation method of the composite surfactant, and relates to the technical field of petrochemical engineering. The composite surfactant is prepared from the following components in percentage by weight: 0.1 to 0.3 percent of anionic-nonionic surfactant, 0.01 to 0.03 percent of cationic surfactant and the balance of formation water, wherein the anionic-nonionic surfactant is prepared by the following steps: reacting a hydroxyl-containing compound with ethylene oxide to obtain polyoxyethylene ether, then carrying out esterification modification by using aconitic acid modified rosin, then sulfonating by using a sulfonating agent, and finally neutralizing. The composite surfactant shows relatively low interfacial tension under the condition of hypersalinity (50000-200000 mg / L), is high in stability, and can be used for improving the recovery efficiency of hypersalinity oil reservoirs.

The invention relates to the technical field of image recognition and foam detection, and discloses a surfactant foam amount prediction method and system based on vision, and the method comprises the steps: collecting a foam image, carrying out the region extraction through the combination of guided filtering and a self-adaptive threshold value, extracting a small foam structure feature vector through employing Euclidean distance transformation and a watershed algorithm, and carrying out the prediction of the foam amount of a surfactant. And constructing a foam quantity prediction model, and outputting a foam quantity result. In the prior art, a method based on area statistics or connected domain identification is low in identification precision under a high-density small bubble scene, and especially under the conditions that the boundary of a foam region is fuzzy and small bubbles are seriously adhered, accurate bubble diameter extraction is difficult to realize. Due to the fact that guided filtering enhancement, a watershed segmentation method and image and structure double-branch prediction are introduced, accurate segmentation of a dense small bubble area and prediction of the foam amount are achieved, and the accuracy and adaptability of foam amount prediction in a non-ionic surfactant complex foam scene are improved.

The invention relates to a chemiluminescence kit for detecting pepsinogen II. The kit comprises an enzyme marker, a luminescent substrate solution and an anti-interference buffer system, the anti-interference buffer system comprises a nonionic surfactant, animal-derived IgG (immunoglobulin G), an antioxidant and catalase; the chemiluminescence kit also comprises a PG II calibration product and a PG II quality control product. The core active component of the enzyme marker is beta-galactosidase. The enzyme marker further comprises an anti-PG II monoclonal antibody marked by beta-galactosidase, bovine serum albumin, trehalose, cane sugar, MgCl2. 6H2O, sodium chloride, Proclin300 and a phosphate buffer solution. According to the kit, a brand-new anti-interference buffer system is introduced on the basis of a spatial proximity chemiluminescence analysis method, so that the resistance to clinically common interferents (such as hemolysis, lipemia, jaundice and heterotropism antibodies) is remarkably improved, and the detection result is more accurate and reliable.

The invention discloses a low-temperature-resistant spodumene flotation collector as well as a preparation method and application thereof, and relates to the technical field of mineral flotation. The flotation collecting agent is prepared from the following raw materials in percentage by mass: 60%-80% of an anionic fatty acid collecting agent, 5%-20% of a sulfonate auxiliary collecting agent, 5%-15% of a hydroximic acid auxiliary collecting agent and 3%-15% of a nonionic surfactant. The flotation collecting agent still has excellent collecting performance and selectivity under the low-temperature condition of 6 DEG C, the problem that the low-temperature activity of a conventional flotation collecting agent is suddenly reduced is effectively solved, pre-desliming or calcium chloride activation is not needed when the flotation collecting agent is used, the process is simple, the cost is low, and the flotation collecting agent is suitable for industrial flotation of spodumene ore.

The invention discloses an amino acid cleansing product and a preparation method thereof. The amino acid face cleaning product is prepared from the following raw material components in percentage by mass: 10 to 30 percent of surfactant composition, 1 to 10 percent of amphoteric or nonionic surfactant, 0.05 to 0.5 percent of citric acid, 1 to 5 percent of humectant, 0.5 to 2 percent of isostearyl alcohol, 0.1 to 0.5 percent of phytosterol dimer linoleate, 0.5 to 5 percent of sodium chloride, 0.3 to 1 percent of inulin lauryl carbamate and the balance of water, the surfactant composition comprises a long-chain fatty acyl glycol acid salt. The amino acid face cleansing product keeps uniform appearance under the conditions of high temperature, low temperature and repeated freezing and thawing, has good physical and chemical stability and compatibility, has small damage to a cuticle structure under the condition of realizing sufficient cleaning, and shows good cleaning and mild effects.

The invention relates to a method for extracting genome DNA of plants rich in secondary metabolites and a buffer solution, and belongs to the technical field of molecular biology and botany. The method solves the technical problems of low DNA extraction efficiency, poor purity, easy degradation and the like when a traditional DNA extraction method is used for treating plant tissues rich in secondary metabolites such as alkaloid, polyphenol and the like. Comprising the following steps: adding a complexing agent such as polyethylene glycol or polyvinylpyrrolidone when grinding plant tissues in a liquid nitrogen environment; splitting by using a cell wall splitting buffer solution containing dithiothreitol and a nonionic surfactant; carrying out DNA release and extraction at 60-70 DEG C by adopting a CTAB (Cetyltrimethyl Ammonium Bromide) extraction buffer solution containing polyethylene glycol and papain; and then purifying and precipitating to obtain high-purity genome DNA (Deoxyribose Nucleic Acid). The method can effectively remove alkaloid, protein and other impurities, significantly improves the DNA yield and purity, and is suitable for genome sequencing, genetic resource protection, medicinal plant molecular identification and the like of plants with high secondary metabolites such as Stephania kwangsiensis and the like.

The application discloses an amino acid cleansing product and a preparation method thereof. The amino acid cleansing product comprises the following raw material components in percentage by mass: a surfactant composition 10-30%, an amphoteric or non-ionic surfactant 1-10%, citric acid 0.05-0.5%, a humectant 1-5%, 0.5-2% isostearyl alcohol, 0.1-0.5% phytosteryl dimer dilinoleate, 0.5-5% sodium chloride, 0.3-1% inulin lauryl carbamate, and the balance is water; the surfactant composition comprises long-chain fatty acyl glycolate. The amino acid cleansing product of the application maintains uniform appearance under high temperature, low temperature and repeated freezing and thawing conditions, has good physical and chemical stability and compatibility, and at the same time, realizes sufficient cleaning and has less damage to the stratum corneum structure, thereby showing good cleaning and mildness.

Provided is a cleaning solution capable of removing even white ink after fixation and capable of improving ejection failure of an inkjet printer. A cleaning solution comprising a first surfactant, a second surfactant, and an alkaline compound, the first surfactant being an amphoteric surfactant, the second surfactant being an anionic surfactant that is a sulfonate and / or a nonionic surfactant having a branched structure and an HLB of 7 to 14.

To provide a detergent composition that can achieve both good detergency and residual fragrance property. 【Solution means】Component (A): a nonionic surfactant represented by formula (a1); Component (B): a fragrance composition; Component (C): one or more antibacterial agents selected from phenolic antibacterial agent (C1) and cationic antibacterial agent (C2); Component (D): water, a detergent composition containing these. R 1 -O-[(EO) s / (PO) t -H ···(a1) [R 1 is a hydrocarbon group having 12 to 18 carbon atoms, EO is an oxyethylene group, s is a number from 12 to 25 indicating the average repeating number of EO, PO is an oxypropylene group, t is a number from 1 to 5 indicating the average repeating number of PO. EO and PO may be randomly added or block-added. However, in R 1 , the hydrocarbon group having 14 carbon atoms is 50% by mass or more of the total mass of R 1 .]

The invention belongs to the technical field of talc, and provides a method for detecting fluorescent substances in talc raw ore, which comprises the following steps: S1, carrying out ball milling on the talc raw ore in a ball mill, sieving to obtain sieved powder, and adding deionized water into the sieved powder to obtain slurry; s2, adding the slurry into the mixture to enable the pH value of the slurry to be 5, stirring, and standing in a water bath for 2-3 hours to obtain a first precipitate; s3, adding a thiourea-ascorbic acid solution into the first precipitate to obtain a second precipitate; and S4, carrying out secondary ball milling on the second precipitate, and spreading the second precipitate in an enamel plate to detect whether the talc raw ore contains the fluorescent substances or not. The hydrochloric acid can dissolve quartz and mica to avoid generation of background fluorescence or quenching effect, and the nonionic surfactant polyethylene glycol can be adsorbed on the surface of the mineral to reduce interfacial tension, so that the hydrochloric acid is easier to infiltrate tiny pores, the pit defect caused by local over-corrosion is reduced, the pickling uniformity is improved, and the detection sensitivity is improved.

This invention provides a multi-layer cosmetic that can provide a cooling sensation and shine to the skin after application, has excellent cooling retention, and allows for easy mixing of the oil layer and water layer during use. [Solution] The following components (A), (B), (C), and (D): (A) Fatty acid ester having a pentaerythritol group (B) Volatile oils (C) Nonionic surfactants with an HLB value of 1 to 9 (D)Water A multi-layer cosmetic containing [specific ingredient].

To provide a liquid detergent composition that achieves both cleaning and disinfecting power, and also exhibits excellent stability of silver compounds at high temperatures. [Solution] A liquid detergent composition comprising (A) component: an alkanolamine represented by the following formula (a), (B) component: a chelating agent, (C) component: a surfactant comprising one or more selected from the group consisting of anionic surfactants (C1), nonionic surfactants (C2), amphoteric surfactants (C3), and semipolar surfactants (C4), and (D) component: a silver compound, wherein the pH at 25°C is 6 to 11. [C1] TIFF2026105304000022.tif48170

A water-soluble unit dose detergent article including a water-soluble film and a laundry liquid detergent composition, wherein the detergent composition includes:a non-soap surfactant system including anionic non-soap surfactant and nonionic surfactant wherein the anionic non-soap surfactant includes more than 0% and less than 20% by weight of the anionic non-soap surfactant of an anionic non-soap surfactant selected from the group consisting of alkyl sulphate, alkoxylated alkyl sulphate, and a mixture thereof;a metalloprotease; andup to 15% by weight of the composition of water.

Disclosed herein are aspects of a compound according to Formula (I). tHe compounds are useful as surfactants and can be used in applications for which a surfactant is indicated. The disclosed compounds are biodegradable and do not form toxic by-products when degraded. As such, the disclosed compounds can be used as replacements for current surfactants, such as current octylphenol ethoxylates (OPEs) and nonylphenol ethoxylates (NPEs) that have toxic effects when degraded. Also disclosed are aspects of a method for making the compounds and methods for using the compounds in cell assays.

The invention relates to the technical field of sewage treatment, in particular to a biological enzyme-containing deodorizing and antibacterial composition for sewage treatment. The biological enzyme-containing deodorizing and antibacterial composition for sewage treatment is prepared from the following raw materials in parts by mass: 1 to 3 parts of a compound biological enzyme preparation, 5 to 15 parts of bamboo charcoal powder, 1 to 2 parts of chitosan, 1 to 3 parts of dopamine, 0.005 to 0.024 part of glutaraldehyde, 10 to 30 parts of bentonite, 1 to 5 parts of graphene, 1 to 3 parts of nano silicon dioxide, 10 to 20 parts of wood flour, 5 to 10 parts of sodium hydrogen sulfite and 1 to 5 parts of sodium carboxymethyl cellulose. 1-2 parts of polyacrylamide and 1-5 parts of a nonionic surfactant. The composition disclosed by the invention forms a synergistic effect, can remove most suspended matters and metal ions in sewage, can quickly catalyze and decompose organic matters into water-soluble small molecular compounds such as organic acid and alcohol, efficiently and remarkably reduces the contents of nitrogen and phosphorus in the sewage and purifies a water body.

The present application belongs to the technical field of cleaning products, and particularly relates to a high-temperature oil stain removing stove cleaner as well as a preparation method and application thereof. The high-temperature oil stain removing stove cleaner provided by the present application comprises the following components and mass fractions: 11-33 parts of an alkaline additive, 1-2 parts of hydroxyethylidene diphosphonic acid, 3-6 parts of a non-ionic surfactant, 4-8 parts of a solvent, 1-3 parts of a solubilizer, 1-3 parts of sodium xylene sulfonate, and 45-79 parts of water; the solvent comprises ethylene glycol monobutyl ether and diethylene glycol ethyl ether. The high-temperature oil stain removing stove cleaner provided by the present application has the advantages of simple cleaning method, high-temperature oil removing effect, good stain removing and oil scale removing effect on commercial kitchen utensils, high safety, no corrosion to metal, simple raw material composition, and no need to add a defoaming agent.

An object of the present invention is to provide a test piece for measuring albumin, which is not affected by globulin or coexisting substances in serum, have high measurement accuracy, and have good repeatability, and to provide a method for measuring albumin.According to the present invention, there is provided a test piece for measuring albumin, including a support and a reagent holding layer provided over the support, in which the reagent holding layer contains a protein denaturant, an SH reagent, bromocresol purple, and a nonionic surfactant, a content of the bromocresol purple in the reagent holding layer is 0.78 g / m2 to 3.81 g / m2, and a ratio of a content of the nonionic surfactant to the content of the bromocresol purple is 0.01 to 0.3.

To provide a detergent composition capable of improving detergency, and a cleaning method.SOLUTION: The detergent composition contains the following components (A) and (B), wherein the mass ratio of the component (A) to the component (B) [(A) / (B)] is 0.5 or more. (A) Nonionic surfactants represented by the following general formula (1): RO - (CH2CH2O) n - H (1) wherein R represents a linear hydrocarbyl group having 12 carbon atoms, and n represents a number of 13 to 80 SELECTED DRAWING: None

To provide an oil-based ink composition for a ball-point pen capable of obtaining good handwriting with good writing feeling even in writing at a high speed or at a high writing pressure while effectively suppressing ink leakage, and hardly causing strike-through, and to provide a ball-point pen.SOLUTION: A ballpoint pen refill for an oil-based ballpoint pen includes an ink reservoir tube, an oil-based ink composition filled in the ink reservoir tube, and a ballpoint pen tip attached to a front end portion of the ink reservoir tube and configured to supply the oil-based ink composition, wherein the oil-based ink composition contains a first phosphoric acid ester which is a polyoxyethylene hydrocarbon phosphoric acid ester having a hydrocarbon group having 4 or more and 17 or less carbon atoms, a second phosphoric acid ester which is a polyoxyethylene hydrocarbon phosphoric acid ester having a hydrocarbon group having 18 or more and 24 or less carbon atoms, water, and a nonionic surfactant.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of lipase immobilization, and particularly relates to immobilized lipase and a preparation method thereof. The preparation method comprises the following two steps: (I) preparation of activated amino type silica gel resin: mixing amino type silica gel resin, a nonionic surfactant 1308 and deionized water according to a mass ratio of (1000-1100): (2000-2200): (5-8), stirring at 1-5 DEG C for 10-15 minutes, adding cyanuric chloride, dripping a 30-35 wt% sodium hydroxide solution, reacting, and centrifuging; (II) preparation of immobilized lipase: mixing the activated resin, a surfactant, deionized water and a lipase solution, dropwise adding an alkaline solution at 40-45 DEG C under the condition that the pH is 5.0-5.5, and centrifuging, washing and drying after reaction. The obtained immobilized lipase is firm in covalent binding, the enzyme activity is greater than or equal to 50% after the immobilized lipase is repeatedly used for 6 times, the acid-base tolerance and the storage stability are excellent, and the immobilized lipase is suitable for industrial catalysis in multiple industries.

The invention provides an oil-in-water emulsified cosmetic containing (a) an aqueous medium,(b) two or more higher fatty acids of 12 to 24 carbon atoms and alkali metal salts thereof,(c) at least one compound selected from the group consisting of monoalkyl glyceryl ethers having an alkyl group of 12 to 24 carbon atoms and monoalkenyl glyceryl ethers having an alkenyl group of 12 to 24 carbon atoms,(d) a thickener comprising (d-1) a polysaccharide derived from a microorganism and (d-2) a (meth)acrylic-based polymer selected from the group consisting of a poly(meth)acrylic acid salt and a polymer including at least one selected from the group consisting of a (meth)acrylic acid ester, a (meth)acryloylalkyltaurine and a salt thereof as a structural unit, and(e) a nonionic surfactant.

Disclosed are compositions that can overcome the adverse effect that particular surfactants have on the viability, growth and biological activity of live beneficial microorganisms. The compositions include at least one anionic surfactant and at least one amphoteric surfactant or glyceryl monoesters and / or diesters, each of which, individually, adversely affect viability, growth, and / or biological activity of beneficial microorganisms, but used in combination, overcome the adverse effect that each surfactant exhibits on the beneficial microorganism. The compositions further include the beneficial microorganism, and optionally, at least one nonionic surfactant that adversely affects the viability, growth, and / or biological activity of beneficial microorganism. Also disclosed is a method for overcoming the adverse effect that particular surfactants have on beneficial microorganisms by combining selected anionic surfactants and amphoteric surfactants or glyceryl monoesters and / or diesters in particular amounts and ratios with the beneficial microorganism.

The application discloses a lithium mica flotation collector, which comprises the following raw materials in mass parts: 15-20 parts of a fatty amine, 4-5 parts of a fatty acid salt, 5-7 parts of a sulfonate, and 3-5 parts of a non-ionic surfactant. The lithium mica flotation collector has the advantages of good selectivity, strong collecting capacity and short defoaming time, can improve the separation effect of lithium mica while reducing the desliming amount, and has the advantages of low cost, simple preparation and important application significance.

The invention discloses a flotation collecting agent formula based on quartz, a preparation method and an extraction method. The flotation collecting agent formula comprises a cation collecting agent and an anion collecting agent which are used in cooperation. Wherein the cation collecting agent is prepared from the following components in parts by weight: 10 to 40 parts of dodecyl amine, 10 to 40 parts of coconut oil alkylamine, 2 to 8 parts of dodecyl trimethyl ammonium chloride, 1 to 4 parts of a nonionic surfactant, 2 to 8 parts of ethanol and 5 to 10 parts of hydrochloric acid; the anion collecting agent comprises a sulfonate surfactant; the use of hydrofluoric acid is greatly reduced, fluorine pollution is reduced, the anionic collector and the cationic collector are compounded to play a synergistic role, implementation can be carried out under the weak acid condition, agent preparation and process control are simple and convenient, the agent dispersity is good, temperature and ore property fluctuation can be adapted, the flotation selectivity and recovery rate of quartz and feldspar can be remarkably improved, and the flotation efficiency is improved. The resource utilization value of the tailings is improved.

The application discloses a laundry detergent with high decontamination and a preparation method thereof, and belongs to the technical field of liquid detergents. The laundry detergent comprises non-ionic surfactant, anionic surfactant, chelating agent, biological enzyme additive, plant essential oil, preservative and solvent. The preparation method comprises the following steps: adding non-ionic surfactant into the solvent, stirring and dissolving, then adding anionic surfactant, stirring and dissolving, then adding chelating agent, biological enzyme additive, plant essential oil and preservative, adjusting the pH value to 6-8, and obtaining a laundry detergent with high decontamination. The biological enzyme additive added in the laundry detergent can improve the removal capacity of the laundry detergent to protein stains and fat stains through enzymolysis reaction, and the essential oil is used as a natural antibacterial agent to reduce the addition of synthetic antibacterial agents and improve the environmental protection and degradability of raw materials. The laundry detergent prepared by the application has good decontamination effect and excellent antibacterial performance, and the product is efficient and stable.

This invention discloses a gradient pore self-assembled drag-reducing agent for nano-fracturing fluids and its preparation method. The drag-reducing agent comprises nanoparticles with a three-layer gradient self-assembled structure, the particle size of which is no greater than 50 nm. The three-layer gradient self-assembled structure comprises, from the inside out, a hydrophobic core layer, a middle viscoelastic layer, and an outer hydrophilic layer, and is composed of the following by mass percentage: hydrophobic core layer: 25–35% nonionic surfactant, 15–20% organic solvent; middle viscoelastic layer: 30–40% polymer; outer hydrophilic layer: 15–20% zwitterionic surfactant. This invention, through its three-layer gradient self-assembled structure design, integrates multiple functions such as high-efficiency drag reduction, strong proppant carrying capacity, reservoir modification, deep penetration, and temperature and salt resistance. It comprehensively solves the technical bottlenecks of existing technologies, such as low drag reduction efficiency, high reservoir damage, single function, and poor environmental adaptability, providing a novel fracturing fluid additive with superior performance for the efficient development of unconventional oil and gas resources.

Disclosed herein are home care compositions and films formed therefrom. According to one aspect of the present invention, there is provided a home care composition comprising: a polysaccharide comprising Pulullan, an alginate, or a combination thereof; optionally, cellulose; a polyol; one or more surfactants, the one or more surfactants including an anionic surfactant, a betaine surfactant, a nonionic surfactant, or a combination of two or more thereof; optionally, a fragrance; and optionally an emollient, wherein the home care composition is in the form of a film.

The application provides a low pour point nonionic surfactant and a preparation method thereof, which is composed of the following raw materials in parts by weight: C13 isomeric fatty alcohol polyoxyethylene ether 18-30 parts, reverse EO / PO block copolymer 10-20 parts, sodium diisooctyl sulfosuccinate 1-7 parts, sodium dodecyl sulfonate 1-5 parts, glyceryl laurate 1-5 parts, isopropyl alcohol 5-10 parts, and propylene glycol 1-5 parts; the formula is constructed based on a nonionic surfactant as a main body, ion surfactants and additives are introduced, and the system is optimized, so that a low pour point nonionic surfactant with excellent adsorption capacity and decontamination capacity is obtained.

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).