2424 results about "Nonionic surfactant" patented technology

The need for a liquid hand dishwashing detergent composition which provides for effective cleaning, as well as enhanced foaming, is met by formulating the composition with a surfactant system which comprises alkyl sulfated anionic surfactant having little or no alkoxylation, an amphoteric and / or zwitterionic co-surfactant, and nonionic surfactant, in combination with a mid-chain 1,2-alkanediol.

The invention relates to the technical field of daily chemicals, and provides shampoo and a preparation method and application thereof.The shampoo is prepared from, by mass, 3%-15% of a sulfate-free anionic surfactant, 8%-20% of an ampholytic surfactant, 0-5% of a nonionic surfactant, 0.3%-1% of a hair cationic conditioner and 0.1%-3% of emulsified silicone oil based on the total mass of the shampoo; the cationic conditioner for hair comprises a polyquaternium cationic polymer and cationic guar gum, and the mass ratio of the polyquaternium cationic polymer to the cationic guar gum is (1: 2)-(2: 1). According to the application, the polyquaternium cationic polymer and the cationic guar gum are selected as the cationic conditioner for hair, and the sulfate-free anionic surfactant and the emulsified silicone oil are matched, so that mild cleaning of scalp can be realized, water-oil balance of the scalp can be maintained, damage to hair scales can be reduced, and the combability and fluffy effect of the hair can be improved.

The invention discloses a water-based weather-resistant mildew-proof coating and a preparation method and application thereof.The mildew-proof coating comprises a water-based coating, organic mildew-proof agent missible oil and an inorganic nano-material, the water-based coating comprises water-based acrylic resin and alkyd resin, the mass ratio of the water-based acrylic resin to the alkyd resin is (20-25): 1, the organic mildew-proof agent missible oil is 1: 1, and the inorganic nano-material is 1: 1. The inorganic nano material comprises at least one of nano titanium dioxide, nano zinc oxide and nano silicon dioxide. The preparation method comprises the following steps: mixing the water-based paint, the organic mildew preventive missible oil, the inorganic nano-material, the coalescing agent, the nonionic surfactant and the deionized water to form a mixed solution, and emulsifying the mixed solution under a water bath condition of 50-60 DEG C to obtain the water-based weather-resistant mildew-proof paint. The stability and the storage stability of the mildew-proof coating are at least doubled compared with those of an existing scheme, and the mildew-proof performance is improved by 80% or above.

The invention discloses a water-borne epoxy resin coating which comprises a component A and a component B, the component A is prepared from 60 to 80 parts of 50 percent modified water-borne epoxy resin emulsion, 5 to 15 parts of deionized water, 0.5 to 1 part of wetting dispersant, 0.2 to 0.8 part of defoaming agent, 5 to 10 parts of modified zinc phosphate, 3 to 5 parts of ion exchange antirust pigment, 4 to 6 parts of sericite powder, 3 to 5 parts of glass flake, 5 to 10 parts of precipitated barium sulphate, 1 to 5 parts of nano silicon dioxide and 0.5 to 1 part of rheological additive; 1 to 2 parts of modified organic bentonite slurry; 0.1 to 0.3 part of a pH conditioning agent; and 0.2 to 0.8 part of a flash rust inhibitor. The component B is prepared from 40 to 50 parts of waterborne epoxy-amine adduct, 20 to 30 parts of 50 percent modified polyamide curing agent, 5 to 15 parts of 60 percent Mannich base phenolic aldehyde amine curing agent, 0.5 to 1.5 parts of epoxy silane coupling agent, 1 to 2 parts of nonionic surfactant and 15 to 20 parts of deionized water. The emulsion stability of the waterborne epoxy resin coating is improved through a bisphenol A / F mixed epoxy emulsion and a grafted polyethylene glycol hydrophilic chain segment.

The invention relates to the technical field of dispersing agents, and particularly discloses a high-concentration water-based graphene dispersing agent. The high-concentration water-based graphene dispersing agent is prepared from the following raw materials in parts by weight: 25 to 30 parts of a modified nonionic surfactant, 8 to 12 parts of sodium lignin sulfonate, 0.4 to 0.8 part of a de-foaming agent and 90 to 100 parts of de-ionized water, the modified nonionic surfactant is prepared by the following steps: carrying out dehydration esterification reaction on 1-pyrene butyric acid and N-hydroxysuccinimide, carrying out nucleophilic substitution reaction on the obtained product and polyethylene glycol monododecyl ether to obtain modified 1-pyrene butyric acid, and finally polymerizing the modified 1-pyrene butyric acid and n-butyl acrylate. The method is easy to operate, graphene does not need to be subjected to oxidation reduction, the integrity of a graphene sheet layer can be completely kept, and the performance of the graphene can be fully exerted; the prepared graphene dispersing agent realizes efficient dispersing effect, excellent stability and environment-friendly safety characteristics, and provides solid technical support for wide application of graphene in multiple fields.

An adsorbent for removing organic sulfide, and a preparation method therefor and a use thereof, relating to the technical field of desulfurization adsorbents. The adsorbent for removing organic sulfide comprises a high-pore-volume core and a coating layer attached to the high-pore-volume core; the high-pore-volume core is obtained by mixing a nonionic surfactant, an alkali metal precursor and / or an alkaline-earth metal precursor, and an aluminum-containing compound and then carrying out forming and drying on same; and the coating layer is formed by an Ag and Ce co-modified high-silicon molecular sieve and a composition Al2(OH)nCl6-n (n=1-5). The adsorbent has the characteristics of high desulfurization efficiency, wide desulfurization range, high desulfurization precision, mild use conditions, long service life and the like, can achieve deep removal of organic sulfur under normal-temperature and normal-pressure conditions, can remove the organic sulfur in raw materials to 10 ppb or below, and is particularly suitable for desulfurization and purification of liquefied petroleum gas or natural gas.

The invention provides a composite metal oxide catalyst, a preparation method thereof and a methane catalytic cracking method. The catalyst comprises 10%-80% of a dehydrogenation main active component, 5%-50% of a dehydrogenation auxiliary active component and the balance of a carrier, the period of metal elements in the dehydrogenation auxiliary active component comprises at least one of a fourth period, a fifth period and a sixth period, and the group of the metal elements in the dehydrogenation auxiliary active component comprises at least one of an IB group, a VB group, a VIB group and a VIIB group; and / or the metal elements in the dehydrogenation auxiliary active component comprise La series metal; the raw material of the composite metal oxide catalyst comprises a nonionic surfactant. The invention also provides a preparation method of the catalyst and a methane catalytic cracking method using the catalyst. The composite metal oxide catalyst is high in active metal dispersity, long in service life and relatively high in methane conversion rate, and the produced carbon nanotubes are good in quality.

The invention discloses a dispersing agent for water-based nano pigment color paste, and relates to the technical field of water-based paint preparation, the dispersing agent comprises 50-150 parts of a polyether modified polyol compound, 30-80 parts of modified polyacrylate, 10-50 parts of a nonionic surfactant, 5-30 parts of a thickener, 700-850 parts of an environment-friendly solvent and 5-20 parts of a surface modifier; the invention further discloses a preparation method of the dispersing agent for the water-based nano pigment color paste. The preparation method comprises the following steps: preparing materials; adding the polyether modified polyol compound into the stirring container; adding modified polyacrylate into the polyether modified polyol compound solution; a nonionic surfactant is added; adding a thickening agent from a natural plant source; adding an environment-friendly solvent; and adding a surface modifier. The dispersing agent disclosed by the invention not only can effectively disperse pigment particles and prevent agglomeration of the pigment, but also can maintain good flowability and proper viscosity of the pigment and ensure high stability of color paste.

The invention discloses a high-stability antirust emulsified cutting fluid, which is composed of the following components by mass: 0.2-1% of a copper corrosion inhibitor, 5-10% of organic amine, 3-10% of an organic acid, 5-10% of an emulsifier, 35-45% of base oil, 1-3% of a preservative, 0.1-1% of an acidic corrosion inhibitor, 10-20% of a lubricating additive, 1-3% of a coupling agent, 0.5-2% of an antifoaming agent, and the balance of water. The emulsifier is composed of a nonionic surfactant and an anionic surfactant, and the acidic corrosion inhibitor is an imidazole compound. Compared with the existing emulsified cutting fluid, the emulsified cutting fluid has high stability in high-temperature, low-temperature, high-hardness water and slightly acidic systems, has good antirust, lubricating, cooling and cleaning performances, can effectively improve the processing efficiency, prolong the service life of equipment and improve the quality of workpieces, and is especially suitable for cutting of ferrous metals.

The invention relates to the technical field of wax emulsions for yarn weaving, in particular to a wax emulsion which has spinnability, hand feeling and stability and is free of layer difference and a preparation method and application of the wax emulsion. The wax emulsion comprises a component A and a component B, wherein the component A is selected from two or more of oxidized modified polyethylene wax, fatty alcohol-polyoxyethylene ether and paraffin; the component B is prepared from the following components in percentage by weight: 2.5 to 5 percent of a cationic surfactant, 2.5 to 5 percent of a nonionic surfactant, 0.1 to 0.5 percent of an antibacterial agent, 0.5 to 1 percent of a pH regulator and the balance of water. The wax emulsion provided by the invention has excellent lubricating effect, softening effect and permeation effect, has no middle-outer layer difference and excellent stability, and does not influence the color light and fastness of a dyed fabric.

The invention relates to the technical field of mortar, in particular to cement self-leveling anti-crack and anti-seepage mortar and a preparation method thereof. The cement self-leveling anti-cracking and anti-seepage mortar is prepared from the following raw materials in parts by mass: 50 to 70 parts of Portland cement, 70 to 90 parts of quartz sand, 5 to 10 parts of nano metakaolin, 1 to 3 parts of calcium sulfate, 5 to 10 parts of polyethylene fiber, 1 to 2 parts of nonionic surfactant, 1 to 2 parts of silane coupling agent, 3 to 8 parts of composite basalt fiber, 0.5 to 1.5 parts of polycarboxylate superplasticizer and 1 to 3 parts of defoaming agent. 1-3 parts of hydroxypropyl methyl cellulose, 1-2 parts of a retarder and 0.5-1.5 parts of a coagulant. The mortar material has good anti-cracking performance and anti-seepage performance and excellent durability, can effectively solve the problem that the anti-cracking performance and the anti-seepage performance of the mortar material in the prior art cannot meet the environmental requirements, and is suitable for large-scale popularization and application.

The invention relates to the technical field of pharmaceutical preparations, in particular to a multiple nano emulsion adjuvant and a preparation method thereof. The multiple nano emulsion adjuvant is prepared from 2.73 to 6.37 g of an oil phase matrix based on 100 g of a raw material system, 0.10 to 0.25 g of a sterol compound; 0.212 to 0.424 g of a nonionic surfactant; 0.00050 to 0.00200 g of a triterpenoid saponin type active adjuvant; 0.010 to 0.020 g of an anionic polymer modifier; 0.005 to 0.015 g of a cationic polymer modifier; 70-90 g of a buffer solution; the total mass of the raw materials is 100 g. The nano emulsion adjuvant prepared by the invention can be stored for 6 months at 2-8 DEG C under a low sterol condition, the particle size change does not exceed + 5%, no crystallization or layering is generated, and the stability of the active adjuvant is remarkably improved.

The invention discloses a low-seepage recyclable acrylate infiltration sealant and a preparation method thereof, and belongs to the field of metal die casting infiltration sealing. The impregnation sealant is prepared from 45 to 70 parts of monofunctional (methyl) acrylate, 10 to 35 parts of bifunctional (methyl) acrylate, 0.5 to 1 part of an initiator, 0.1 to 0.5 part of a polymerization inhibitor, 0.1 to 0.5 part of a stabilizer and 2 to 7 parts of an acrylate graft modified surfactant, the impregnating sealant is prepared by reacting 50-100 parts of a nonionic surfactant, 25-75 parts of an acrylate monomer, 0.5-1 part of deionized water and 0.05-0.1 part of Lewis acid at 75-96 DEG C for 3-6 hours. The impregnating sealant prepared by the invention is used for impregnating and sealing various metal die castings; excessive impregnant on the surface of the die casting is easy to clean and recycle by water; and the surface of the heated and cured die casting is clean and free of exudate oil stains.

The invention relates to the technical field of reverse osmosis membrane maintenance, in particular to a cleaning scale inhibitor special for a reverse osmosis membrane and application of the cleaning scale inhibitor. The cleaning scale inhibitor provided by the invention comprises an agent A, an agent B and an agent C, the agent A comprises the following components in percentage by mass: 10-20% of organic phosphonic acid, 10-20% of polycarboxylic acid polymer, 5-10% of sulfamic acid, 3-8% of sodium gluconate and the balance of water; the agent B comprises 8-15% of an isothiazolinone bactericide, 5-10% of a nonionic surfactant, 3-8% of a chlorine bactericide, 2-5% of sodium dodecyl benzene sulfonate and the balance of water; and the agent C comprises 10-20% of sodium polyacrylate, 8-15% of sodium hexametaphosphate, 5-10% of citric acid, 3-8% of silicate and the balance of water. The cleaning scale inhibitor provided by the invention has an efficient cleaning effect on various pollutants, is environment-friendly, and does not cause chemical damage to a reverse osmosis membrane.

The invention relates to a laundry gel bead with excellent stability. The laundry gel bead with excellent stability comprises the following components: a surfactant, a modified surfactant, a solvent, a neutralizer, a chelating agent and an auxiliary agent, wherein the modified surfactant is obtained by reacting acrylic acid modified fatty alcohol-polyoxyethylene ether, sodium p-styrenesulfonate and methyl oleate ethoxylate. As the modified surfactant contains a large amount of ethyoxyl and other groups, the modified surfactant can act together with other ethyoxyl-containing surfactants to balance the irritation caused by a large amount of sulfonic acid, saturated fatty acid and other components in the laundry gel bead formula, thereby enhancing the mildness of the laundry gel beads, lowering the irritation of the washed clothes residues, and enhancing the laundry gel bead mildness. The irritation to skin and clothing fibers is effectively reduced; in addition, the modified surface active agent, the anionic surface active agent and the nonionic surface active agent act together, so that the dirt-removing capability of the laundry condensate beads is improved together.

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.

A water-soluble unit dose article containing a non-soap anionic surfactant and non-ionic surfactant, where the non-ionic surfactant includes first and second alkoxylated alcohol non-ionic surfactants. A related process of laundering fabrics.

The invention discloses an anti-collapse photoresist flushing fluid and a photoetching method for forming a photoresist pattern, the anti-collapse photoresist flushing fluid comprises a nonionic surfactant, an anionic surfactant, an organic alkali and a solvent, the nonionic surfactant is # imgabs0 #; and the anionic surfactant is isooctyl alcohol ether phosphate ester or isooctyl alcohol polyoxyethylene ether phosphate ester. According to the invention, the alkynediol nonionic surfactant has the effect of double tails with interconnected bipolar groups and has a synergistic effect with the anionic surfactant, so that the surface tension of the flushing fluid is reduced while the activity of the surfactant is improved, thereby reducing the internal stress of photoresist lines and preventing collapse; bis-OH in the alkynediol and incompletely developed free carboxylic acid in the photoresist are subjected to esterification reaction to generate a hydrophobic material surface layer, so that the line edge roughness and the image surface roughness are improved; organic alkali and functional groups on the surface of the photoresist are subjected to cross-linking reaction, so that the mechanical property is improved, and collapse is further prevented.

The present invention relates to a highly concentrated, stable pharmaceutical formulation of a pharmaceutically active anti-HER2 antibody, such as e.g. Trastuzumab (HERCEPTIN™), Pertuzumab or T-DM1, or a mixture of such antibody molecules for subcutaneous injection. In particular, the present invention relates to formulations comprising, in addition to a suitable amount of the anti-HER2 antibody, an effective amount of at least one hyaluronidase enzyme as a combined formulation or for use in form of a co-formulation. The formulations comprise additionally at least one buffering agent, such as e.g. a histidine buffer, a stabilizer or a mixture of two or more stabilizers (e.g. a saccharide, such as e.g. α,α-trehalose dihydrate or sucrose, and optionally methionine as a second stabilizer), a nonionic surfactant and an effective amount of at least one hyaluronidase enzyme. Methods for preparing such formulations and their uses thereof are also provided.

The present application provides a preparation method and application of an ordered mesoporous-microporous carbon composite material. The preparation method includes: (1) infiltrating a foaming material into a mixed solution containing phenolic resin, a silicon source, and a nonionic surfactant, and drying to obtain a first matrix; (2) mixing the first matrix with a phosphate compound and reacting to obtain a second matrix; (3) calcining the second matrix under an inert gas to obtain a third matrix; (4) reacting the third matrix with a hydrofluoric acid-containing solution to generate an ordered mesoporous-microporous carbon composite material. The ordered mesoporous-microporous carbon composite material prepared in the present application is corrosion-resistant, has a large specific surface area, a high porosity, good adsorption performance, and a low cost, and has excellent mechanical stability and chemical stability, and can adsorb, separate, and rapidly desorb organic pollutants in high-concentration wastewater.

The present invention provides stable pharmaceutical formulations comprising a human antibody that specifically binds to human lymphocyte activation gene-3 (LAG-3). In certain embodiments, the formulations contain, in addition to an anti-LAG-3 antibody, a buffer, an amino acid, a non-ionic surfactant, and a sugar. The pharmaceutical formulations of the present invention exhibit a substantial degree of antibody stability upon stress and storage.

The present invention relates to the technical field of oilfield chemistry, and provides a wormlike supramolecular associated micelle, a hydrophobic associated copolymer and a preparation method thereof, the wormlike supramolecular associated micelle comprises a soft template, a hydrophobic functional monomer 1, a hydrophobic functional monomer 2 and a polarity regulator, the soft template is a long-chain molecular polymer and has an active functional group, and the polarity regulator is a hydrophobic functional monomer 2. The hydrophobic functional monomer 1 is an anionic-nonionic surfactant with polymerizable double bonds, the hydrophobic functional monomer 2 is a cationic-nonionic surfactant with polymerizable double bonds, and the polarity regulator is a micromolecular organic compound. The problems of poor resistance reduction, sand carrying capacity and the like of the fracturing fluid in the construction process due to dissociation of a polymer molecular network structure and sudden reduction of rheological property and viscoelasticity are solved.

The invention discloses low-temperature coagulation-accelerating anion styrene-butadiene latex for oil field well cementation and a preparation method of the low-temperature coagulation-accelerating anion styrene-butadiene latex. The low-temperature coagulation-accelerating anion styrene-butadiene latex comprises the following components in parts by mass: 100 parts of anion styrene-butadiene latex raw stock; 4 to 10 parts of a nonionic surfactant I; 2 to 4 parts of a nonionic surfactant II; 10 to 20 parts of water glass; 0.5 to 1 part of a defoaming agent; and 15-20 parts of deionized water. The low-temperature coagulation-accelerating anionic styrene-butadiene latex prepared by the invention is used in cement paste, has short thickening time at low temperature, can resist sodium chloride brine to reach semi-saturation, and can effectively control the water loss of the cement paste, improve the anti-channeling performance of a cement paste system, reduce the elastic modulus of set cement, increase the density of the set cement and improve the stability of the set cement. Therefore, formation gas is effectively prevented from invading cement stone, and well cementation quality is guaranteed.

The invention provides a seawater-based polymer coated self-suspending proppant as well as a preparation method and application thereof, and belongs to the technical field of oilfield fracturing exploitation. The proppant is prepared from the following raw materials: a proppant body, a silane coupling agent gamma-methacryloxypropyltrimethoxysilane, acrylamide, a hydrophobic monomer hexadecyl dimethyl allyl ammonium chloride, a twin-tailed betaine monomer, sodium p-styrenesulfonate, an initiator and a solvent. The self-suspending proppant and the nonionic surfactant are compounded for use so as to be applied to the fracturing fluid. On one hand, the polymer on the surface of the proppant has good salt tolerance and is dissolved after meeting seawater, so that the viscosity is increased; and on the other hand, the surfactant and the dissolved polymer coating layer generate a synergistic effect, so that a tackifying effect is achieved. The sand suspending effect is generated as the tackifying effect of normal fracturing fluid, and the seawater low-permeability fracturing requirement is met.

The present invention relates to a highly concentrated, stable pharmaceutical formulation of a pharmaceutically active anti-HER2 antibody, such as e.g. Trastuzumab (HERCEPTIN™), Pertuzumab or T-DM1, or a mixture of such antibody molecules for subcutaneous injection. In particular, the present invention relates to formulations comprising, in addition to a suitable amount of the anti-HER2 antibody, an effective amount of at least one hyaluronidase enzyme as a combined formulation or for use in form of a co-formulation. The formulations comprise additionally at least one buffering agent, such as e.g. a histidine buffer, a stabilizer or a mixture of two or more stabilizers (e.g. a saccharide, such as e.g. α,α-trehalose dihydrate or sucrose, and optionally methionine as a second stabilizer), a nonionic surfactant and an effective amount of at least one hyaluronidase enzyme. Methods for preparing such formulations and their uses thereof are also provided.

The invention provides a viscosity-controllable and low-toxicity polysaccharide-based antibacterial detergent and a preparation method thereof, and belongs to the technical field of daily chemical sterilization. The detergent comprises the following raw materials in percentage by mass: 0.5-6% of a polysaccharide thickener, 10% of a bacteriostatic agent, 10% of a glycoside nonionic surfactant and the balance of water, the polysaccharide thickening agent is a mixture of chitosan, chitosan hydrochloride and quaternized chitosan. The polysaccharide is applied to viscosity regulation and control of a surfactant system without a petroleum-based thickening agent for the first time, application of the polysaccharide in the field of daily chemical washing is expanded, and compared with other antibacterial hand sanitizer competitive products containing benzene rings and phenol bacteriostatic agents and 6501 thickening agents, the antibacterial hand sanitizer competitive products have the remarkable advantages of high biocompatibility, high antibacterial property, easiness in degradability and the like.

A liquid hand dishwashing detergent composition includes from about 5% to about 50% by weight of the composition of a surfactant system. The surfactant system includes anionic surfactant and a co-surfactant selected from an amphoteric surfactant, a zwitterionic surfactant, and mixtures thereof. The surfactant system includes at least about 40% by weight of the surfactant system of the anionic surfactant, and from about 1.0% to about 10% by weight of the composition of alkyl polyglucoside nonionic surfactant; and the composition further includes from about 0.1% to about 10% of a mid-chain 1,2-alkanediol, and the mid-chain alkyl chain of the 1,2-alkanediol includes from 6 to 14 carbon atoms.

A concentrated laundry composition premix which is dilutable in water to form a laundry liquid composition, the viscosity which when formed from a dilution of five parts by volume water to one part premix and measured at 25° C. and at 106 s−1 is from 200 to 800 mPa·s., said premix comprising at least 10% wt. water, from 0.1 to 8% wt. ethoxylated polyol ester, and comprising from 5 to 70% wt. surfactant active excluding the ethoxylated polyol ester and where the ethoxylated polyol ester is not sorbeth stearate, wherein the surfactant comprises anionic surfactant and non-ionic surfactant in a weight ratio of from 50:50 to 1:99 and wherein the composition comprises from 0 to 5% wt. alkyl ether sulphate.

The need for a liquid hand dishwashing detergent composition which provides for effective cleaning, as well as enhanced foaming, is met by formulating the composition with a surfactant system which comprises alkyl sulfated anionic surfactant having little or no alkoxylation, an amphoteric and / or zwitterionic co-surfactant, and nonionic surfactant, in combination with a mid-chain 1,2-alkanediol.

The invention relates to the technical field of cleaning agents, and discloses a biodegradable environment-friendly cleaning agent, which comprises: a composite surfactant system comprising at least one nonionic surfactant, an ampholytic surfactant and a chelating functional surfactant; the plant extract oil system comprises limonene and a eucalyptus oil mixture; the functional particle system comprises nanoscale enzyme microcapsules and slow-release type oxidized particles; the natural polysaccharide stable network system comprises at least two polysaccharide thickeners and a bio-based cross-linking agent, and the assistant system comprises a metal ion chelating agent, a buffer acid system and water. By introducing sodium polyaspartate as a green chelating surfactant, efficient chelating of calcium and magnesium ions under a hard water condition is realized, the cleaning power is remarkably improved, water stain residues are reduced, and the cleaning performance with wider adaptability is obtained.