36 results about "Dodecylbetaine" patented technology

The invention relates to a penetrant for coal-bed flooding. The penetrant comprises the following components by weigh percent: 0.01%-0.10% of sodium dodecyl sulfate, 0.01%-0.10% of sodium diisooctylester sulfosuccinate, 0.01%-0.10% of dodecylbetaine, 0.01%-0.10% of sodium oleoyl methyl ethanesulfonate, 0.1%-1.0% of calcium chloride and the balance of water. By using the penetrant for coal-bed flooding in the invention, the problems that a coal bed is not easily wetted and penetrated by water can be effectively solved, the efficiency of coal-bed flooding is improved, the flooding amount, wetting radius and flooding speed of the coal bed are greatly improved, the production amount of working face coal dust is effectively reduced, accident potential is eliminated, and coal mining efficiency is improved.

The invention relates to a preparation method of montmorillonite as a novel overflowed oil pollution absorbing material, which comprises the steps of: preparing montmorillonite into a turbid liquid, wherein the mass proportion of water to soil is 10:1-20:1; adding dodecylbetaine (BS-12) or dodecyl sulfobetain (SB-12) as a green surface active agent, stirring for 5-10min to ensure that the green surface active agent is dispersed uniformly; ultrasonically treating for 10-20min; carrying out solid-liquid separation by using a filtering method, washing with water; and drying, crushing and the like. The invention has the advantage that the green surface active agent can generate ion exchange action with positive ions among the montmorillonite to enter among montmorillonite layers to ensure that the dewatering property of the montmorillonite can be enhanced and the swelling performance is improved, thus the oil spilling pollution can be more effectively held back.

The invention relates to a preparation method of montmorillonite as a novel overflowed oil pollution absorbing material, which comprises the steps of: preparing montmorillonite into a turbid liquid, wherein the mass proportion of water to soil is 10:1-20:1; adding dodecylbetaine (BS-12) or dodecyl sulfobetain (SB-12) as a green surface active agent, stirring for 5-10min to ensure that the green surface active agent is dispersed uniformly; ultrasonically treating for 10-20min; carrying out solid-liquid separation by using a filtering method, washing with water; and drying, crushing and the like. The invention has the advantage that the green surface active agent can generate ion exchange action with positive ions among the montmorillonite to enter among montmorillonite layers to ensure that the dewatering property of the montmorillonite can be enhanced and the swelling performance is improved, thus the oil spilling pollution can be more effectively held back.

The invention relates to the field of washing supplies, and particularly relates to a plant carbon washing powder which comprises the following components in parts by weight: 30-45 parts of sodium carbonate, 15-20 parts of sodium sulfate, 10-15 parts of sodium silicate, 8-10 parts of benzenesulfonic acid, 20-25 parts of dodecyl lycine BS-12, 5-10 parts of coconut oil meal, 1-3 parts of lauric acid, 3-6 parts of glycol distearate, 3-5 parts of fatty alcohol polyethenoxy ether and 8-15 parts of plant carbon particle. The particle size of the plant carbon particles is 800-3000 meshes. The plant carbon washing powder provided by the invention has strong dirt-removing power, and has antimicrobial and antistatic functions.

The invention discloses a texture reactive dye containing a garden balsam extract. The texture reactive dye comprises the following various components in parts by weight: 20-40 parts of reactive dye, 1-10 parts of garden balsam extract, 1-10 parts of camphor leaf extract, 1-3 parts of penetrant, 3-5 parts of anhydrous ammonium sulfite, 1-2 parts of tannic acid, 1-3 parts of N-dodecyl betaine ampholytic surfactant, 1-8 parts of polyvinyl alcohol, 1-5 parts of diaminophenylethanol sulfate and 1-5 parts of acrylic acid. The texture reactive dye containing the garden balsam extract is capable of allowing soft patterns, high fastness, no fading, and softness after drying.

The invention discloses a novel polymer water-based fire extinguishing agent and a preparation method thereof. The novel polymer water-based fire extinguishing agent is prepared from the following rawmaterials in parts by mass: 2-4 parts of ammonium polyphosphate, 6-8 parts of sodium carbonate, 6-8 parts of sodium silicate, 0.5-1 part of polyacrylamide, 2-4 parts of polyethylene glycol, 6-8 partsof sodium diethylhexyl sulfosuccinate, 12-16 parts of dodecyl betaine, 6-8 parts of sodium chloride, 5-9 parts of sodium benzoate, 7-13 parts of xanthan gum, 15-25 parts of n-butyl alcohol, 8-14 parts of a compound antifreeze agent, 8-10 parts of a foaming agent, 6-10 parts of an interface active agent, 8-14 parts of a surfactant and 80-100 parts of water. The novel polymer water-based fire extinguishing agent has the following beneficial effects that the oxygen isolation suffocation effect is obvious, components are mixing uniformly, the stability is good, precipitation cannot occur along with the change of the storage environment, the fire extinguishing effect is not affected after long-time storage, the proportion of all the components is optimized, the optimal synergistic effect is achieved, a water film can be formed on the surface of a comburent, oxygen is isolated, cooling, heat resistance and flame retardance are achieved, and extremely high flame retardance and after-combustion resistance are achieved.

The invention discloses an oil agent for textile fibers, and a preparation method thereof. The oil agent for the textile fibers is formed by mixing and preparing 10-20 parts of alkyl phosphate esters,0.4-0.8 part of ethylene oxide, 3-5 parts of polyether quaternary ammonium salt, 10-20 parts of dodecyl dimethyl betaine, 4-8 parts of polyether modified siloxane, 10-20 parts of sodium polystyrenesulfonate oligomer, 3-8 parts of glycerinum and 20-30 parts of white oil, wherein the alkyl phosphate esters adopted in the formula system are high in water solubility and anti-static effect. The polyether quaternary ammonium salt is a cationic surfactant, high in bactericidal performance, and capable of being mixed and used with an anionic surfactant to achieve compounding to improve the anti-static effect. The sodium polystyrenesulfonate oligomer is a nonionic surfactant, the substance is capable of being adsorbed onto the surfaces of the fibers to form an adsorption layer, and the distances between the fibers and the surface of a friction object are increased, so that friction on the surfaces of the fibers is reduced, and then static electricity is easy to eliminate; and the sodium polystyrenesulfonate oligomer is low in toxicity, and moderate in effect on a fabric.

The invention discloses a dispersing and leveling agent for fabrics, which is composed of the following components in parts by weight: 7.6 parts of glycerol ether oleate, 2.3 parts of fatty alcohol polyethenoxy ether, 1.4 parts of propylene glycol dodecyl benzoate polyethenoxy ether, 2.7 parts of dodecyl betaine, 0.6 part of sodium dodecyl benzene sulfonate and 1.1 ethylene glycol fatty acid ester. The dispersing and leveling agent for fabrics has excellent migration property, retarding property and dispersibility.

The invention relates to a printed circuit board cleaning agent prepared from the raw materials of, by weight: 4-5 parts of erucic acid, 3-4 parts of white oil, 3-4 parts of dodecylbetaine, 4-5 parts of fatty alcohol polyoxyethylene ether, 2-3 parts of sodium borate, 3-4 parts of coconut oleic oil alkylolamide phosphate, 2-3 parts of citric acid, 1-2 parts of fatty alcohol polyoxyethylene ether AEO-3, 30-40 parts of ethanol, 4-5 parts of an auxiliary agent, and 150-180 parts of deionized water. The cleaning agent provided by the invention has high-efficiency thorough cleaning function. According to the cleaning agent, a plurality of surfactants are applied in combination, and are well formulated. Therefore, cleaning effect is greatly improved, cleaning efficiency is improved, cleaning cost is saved, and economic benefit is increased. With the auxiliary agent, a protective film can be formed on the surface of the circuit board, such that oxidation and short-circuit can be prevented.

The invention discloses a three-purpose product for washing hair, washing face and bathing and a preparation method thereof. The preparation method comprises the following steps: taking the fresh shaddock peel enzyme solution, dodecyl alcohol ether ammonium sulfate, dodecyl ammonium sulfate, polyquaternium, pearly slurry, glycerol, deionized water, dodecyl dimethyl betaine and tropical fruit taste essence as raw materials, mixing and stirring according to mass fractions and steps to obtain the three-purpose product for washing hair, washing face and bathing. When the product is used for washing hair, the nutrition of the hair root can be rapidly supplemented, the dandruff can be effectively eliminated, and the scalded, pulled and dyed hair can be repaired and the natural elasticity can be recovered; when the product is used for washing face, the face sebum can be effectively cleaned and the product is mild and free of irritation; when the product is used for bathing, the skin can be effectively cleaned, moistened and sterilized, the nutrition can be sufficiently absorbed by the skin, and the skin is healthy and fresh and not dry; after bathing, the skin is extra moistened with a long lasting tender feel. The product is wide in using scope and strong in practicability.

Provided is a lithium battery fire extinguishing agent. The lithium battery fire extinguishing agent is characterized by comprising, by weight, 2-3 parts of fluorinated alkyl betaine, 15-25 parts of lauroylamide propylbetaine, 0.5-2.5 parts of organosilicon quaternary ammonium salt, 5-15 parts of dodecylbetaine, 40-55 parts of a compound of ethylene glycol and glycerol, 5-20 parts of a compound ofdiethylene glycol monobutyl ether and n-butanol, 5-10 parts of urea, 0.03-0.08 part of xanthan gum, 0.5-1 part of sodium alginate, 2-10 parts of edetate disodium or ethylenediaminetetraacetic acid orsodium citrate, 0.1-1 part of triethanolamine and 80-100 parts of water. The lithium battery fire extinguishing agent is extremely low in corrosivity, capable of not damaging storage tanks, fire-fighting equipment and protected objects, capable of cleaning residues easily after extinguishment and capable of achieving autonomous degradation, and particularly suitable for aluminum battery extinguishment.

A pet wet-wipe stoste component and a preparation method of the wet wipe relate to the technical field of cleaning wet wipes. The preparation method comprises the following steps: firstly adding 0.01-4% of dodecyl betaine, 0.01-2% of fatty alcohol-polyoxyethylene ether, 0.01-1% of sodium alcohol ether sulphate and the balance deionized water into a stirring container, heating, sterilizing, and uniformly mixing to obtain a diluent; cutting spunlaced non-woven fabric and conveying the spunlaced non-woven fabric into a paper towel automatic folding machine, soaking the spunlaced non-woven fabricby the use of the diluent, and finally packaging to obtain the product. The product can easily and effectively remove pet dirt and can remove peculiar smell of pets to make pets to be fragrant and refreshing. The formula is soft, can better protect pet's fur from being harmed and also can better protect the skin of pet owners who clean their pets from being damaged. The product has the no-rinse effect, is nonirritating, has no side-effect, and has good efficiency of removing oil stain and chlorophyll as well as the strong bactericidal effect. The preparation method is simple, and cost of raw materials is low. The preparation method has a good market prospect.

A stable engine coolant is prepared from raw materials in parts by weight as follows: 8-14 parts of dodecyl dimethyl betaine, 2-6 parts of coconut oil acid alkanolamide, 4-7 parts of polyoxyethylene laurylether phosphate, 3-7 parts of cinnamic acid, 2-4 parts of triethanolamine, 3.5-4.6 parts of p-nitrobenzoic acid, 13-26 parts of self-drying resin, 3-6 parts of a dispersing agent, 1.5-4.5 parts of a special aid, 2.5-3.6 parts of dodecyl diethanolamide, 23-36 parts of deionized water, 5-8 parts of propylene glycol, 4-7parts of loropetalum chinensis and 5-8 parts of sebacic acid. The stable engine coolant has the benefits as follows: the stable engine coolant is stable in cooling performance, can effectively prevent components of a cooling system from rusting and can effectively protect usage of an engine.

The invention discloses a mink oil betaine surfactant and a preparation method thereof, and belongs to the technical field of surfactants, colloids and interface chemistry. The preparation method of the betaine type surfactant comprises the following steps of: (1) carrying out amidation reaction on mink oil and 3-dimethylaminopropylamine to obtain mink oil amide propyl dimethyl tertiary amine; and(2) carrying out quaternization reaction on the mink oil amide propyl dimethyl tertiary amine and sodium chloroacetate to obtain the mink oil betaine surfactant. The molecular structure of the surfactant disclosed by the invention takes long-chain alkyl of mink oil as a hydrophobic group and a betaine characteristic group, so that the performance of the mink oil is improved; the surfactant has better foam stability and mild performance; the emulsifying property of the surfactant is obviously superior to that of a dodecyl betaine surfactant; and the surfactant has good biocompatibility. The preparation method is simple; and the raw materials are natural and green.

The invention discloses 80 percent phosethyl-aluminum water dispersible granules. The granules consist of the following components in percentage by weight: 85 to 87 percent of 95 percent phosethyl-aluminum raw drug, 2 to 5 percent of 50 percent alkyl glycoside, 2 to 5 percent of dodecyl dimethyl betaine, 1 to 5 percent of binder gum Arabic, and 5 to 10 percent of filler ammonium sulfate or urea. The preparation method comprises the following steps: uniformly mixing the raw materials, crushing, mixing with water, granulating, and drying to obtain the 80 percent phosethyl-aluminum water dispersible granules. The 80 percent phosethyl-aluminum water dispersible granules have long pesticide effect time and few application times to crops, a fertilizer is applied to the crops while insects and diseases of crops are prevented and controlled, and the crops can absorb nutrition to facilitate growth.

The invention belongs to the technical field of molecular biological detection, and particularly provides a blood DNA extraction kit only needing one-step washing by using a magnetic bead method. Theblood DNA extraction kit comprises a lysis solution, a binding solution, a proteinase K solution, a washing solution and an elution buffer solution. The method is characterized in that the lysis solution comprises Tris, EDTA, NaCl, NaDC, dodecyl-N-betaine, NLS, GuHCl, Triton X100, NH4Cl and mercaptoethanol; the binding solution comprises isopropanol, PEG 8000 and Brij 58; the washing solution comprises GuHCl, Tris, ethanol and sodium bicarbonate; and the elution buffer solution comprises Tris and EDTA. According to the invention, the blood DNA extraction kit only needing one-step washing by using the magnetic bead method is constructed by preparing the washing solution containing high-concentration sodium bicarbonate (the alkalinity is slightly stronger than that of sodium acetate and sodium chloride), simultaneously giving consideration to ion balance and providing alkalinity, and cooperatively using a zwitterionic detergent CHAPS.

The invention discloses an iodine disinfectant as well as a preparation method and a using method thereof, and belongs to the technical field of preparation of disinfectants. The iodine disinfectant comprises the following components in percent by weight: 2-3% of iodine, 20-30% of phosphoric acid, 30-50% of a surfactant composition and the balance of water, wherein the surfactant composition comprises the following components in parts by weight: 10-20 parts of benzalkonium bromide, 10-20 parts of decylmethyl ammonium chloride, 5-10 parts of polyoxyethylene octylphenol ether, 5-10 parts of sodium dodecyl sulfonate and 10-20 parts of dodecyl betaine. In summary, the iodine disinfectant prepared according to the preparation method provided by the invention has the advantages of fast sterilization, high sterilization efficiency and the like; meanwhile, the preparation method is simple, and is suitable for large-scale popularization and application.

The invention provides a polyvinyl alcohol-based pesticide slow-release film and a preparation method thereof, and belongs to the technical field of agricultural production. The formula comprises thefollowing components: 10-15 parts of a polyvinyl alcohol material, 14-20 parts of a carrier base material, 1-3 parts of pesticide abamectin, 0.5-1.8 parts of biomass charcoal, 1-3 parts of dodecyl betaine, 0.1-0.4 part of formaldehyde, 2-5 parts of glycerol, 0.2-0.5 part of an auxiliary agent and 110-130 parts of water, wherein the mixed polyvinyl alcohol material is a mixture of polyvinyl alcohol with relatively low molecular weight and polyvinyl alcohol with relatively high molecular weight; and preparation of the carrier base material: mixing the sodium metaaluminate solution and sodium bicarbonate in a sealed container, adjusting the pH value, introducing carbon dioxide gas at 40-60 DEG C, controlling the pressure of the carbon dioxide gas, oscillating the liquid while introducing thegas, aging, separating, washing and drying to obtain the carrier base material. Pesticide can be released layer by layer through degradation of the film to different degrees, and the slow release effect is achieved.

The invention discloses 80 percent phosethyl-aluminum water dispersible granules. The granules consist of the following components in percentage by weight: 85 to 87 percent of 95 percent phosethyl-aluminum raw drug, 2 to 5 percent of 50 percent alkyl glycoside, 2 to 5 percent of dodecyl dimethyl betaine, 1 to 5 percent of binder gum Arabic, and 5 to 10 percent of filler ammonium sulfate or urea. The preparation method comprises the following steps: uniformly mixing the raw materials, crushing, mixing with water, granulating, and drying to obtain the 80 percent phosethyl-aluminum water dispersible granules. The 80 percent phosethyl-aluminum water dispersible granules have long pesticide effect time and few application times to crops, a fertilizer is applied to the crops while insects and diseases of crops are prevented and controlled, and the crops can absorb nutrition to facilitate growth.

The invention discloses a durable vehicle-mounted sintered PE aromatherapy sheet. The durable vehicle-mounted sintered PE aromatherapy sheet is prepared by the following steps: (1) adding a pore-enlarging agent or a swelling agent into ultra-high molecular weight polyethylene powder, fully and uniformly stirring, carrying out segmented heating, sintering and molding, and naturally cooling; and (2) completely soaking the sintered and molded material in a dodecyl betaine solution, continuously stirring the material, taking out the soaked material, draining, drying, and adsorbing sesame oil to obtain the lasting vehicle-mounted sintered PE aromatherapy sheet. The oil absorption amount of the PE sintered aromatherapy piece can reach 30%-60% of the volume ratio, the adsorption amount and the fragrance locking and delaying effect generated by the porous structure are greatly increased, and the average fragrance lasting time can reach 20-60 days.

The invention discloses a special selenium-rich foliage fertilizer for winter jujubes, and a preparation method and application method thereof. The fertilizer is composed of the following components in percentage by weight: 0.8-1.0% of sodium selenite, 5.0-10.0% of potassium pyrophosphate, 0.5-1.0% of sodium dodecyl benzene sulfonate, 1.0-2.0% of triton X-100, 1.0-2.0% of dodecyl betaine and 85.0-90.0% of water. By using the foliage fertilizer disclosed by the invention, the selenium content in the winter jujube fruit reaches 50-100 mu g / kg; no phenomenon of excessive selenium intake can be caused as long as the everyday intake amount does not exceed 2.5kg; and the selenium supplementation amount is in the proper range when the intake amount does not exceed 1.0kg. In daily life, the everyday intake amount of the winter jujubes for an adult generally does not exceed 1.0kg when the winter jujubes are used as fresh fruits. Therefore, the selenium-rich winter jujubes produced by the special selenium-rich foliage fertilizer are very safe to eat.

The invention relates to oxygen-increasing phosphorus-free cleaning paste and a preparation method thereof.The cleaning paste is stirred by a self-adaptive stirring system, and the preparation method comprises the following steps that purified water is weighed; mixing sodium carboxymethyl cellulose with sodium carbonate; the weighed purified water is added into a self-adaptive stirring system, the self-adaptive stirring system has lifting and forward and reverse rotation functions, forward rotation and reverse rotation of the self-adaptive stirring system correspond to edge scraping and grinding respectively, sodium percarbonate, sodium perborate, potassium carbonate and sodium bicarbonate which are weighed accurately are added into the purified water one by one to be dissolved, and a first semi-finished product is formed; slowly adding the mixed sodium carboxymethyl cellulose and sodium carbonate into the first semi-finished product, and stirring under the action of a self-adaptive stirring system to form a viscous colloid; and stopping the self-adaptive stirring system, and sequentially adding dodecyl betaine, alkylphenol ethoxylates, alkylolamides, sodium alcohol ether sulphate, sodium n-alkyl benzene sulfonate, the whitening antifreeze agent and the essence into the formed viscous jelly, so that the product is uniform and fine.

The invention relates to a jacquard-like fabric and a preparation method thereof. The preparation method of the jacquard-like fabric comprises the following steps: (1) manufacturing a screen printing plate according to a designed pattern; (2) carrying out screen printing on a fabric to be printed and dyed by using the screen printing plate manufactured in the step (1) to obtain a printed fabric; wherein the fabric to be printed and dyed is a silk and hemp textile fabric, and printing paste for screen printing is an aqueous solution containing N-dodecyl betaine and a thickening agent; the printing paste permeates the fabric to be printed and dyed in the screen printing process; (3) naturally airing and / or drying the printed fabric, removing pulp, washing with water, and adding acid to neutralize to be neutral; (4) dyeing the printed fabric treated in the step (3); and (5) washing the dyed fabric with water, dehydrating and drying to obtain the fabric. According to the method, the manufacturing cost of the jacquard fabric can be greatly reduced, and the obtained imitated jacquard fabric has the advantages of being clear in veins, natural, environmentally friendly and elegant in color.

The invention relates to a penetrant for coal-bed flooding. The penetrant comprises the following components by weigh percent: 0.01%-0.10% of sodium dodecyl sulfate, 0.01%-0.10% of sodium diisooctylester sulfosuccinate, 0.01%-0.10% of dodecylbetaine, 0.01%-0.10% of sodium oleoyl methyl ethanesulfonate, 0.1%-1.0% of calcium chloride and the balance of water. By using the penetrant for coal-bed flooding in the invention, the problems that a coal bed is not easily wetted and penetrated by water can be effectively solved, the efficiency of coal-bed flooding is improved, the flooding amount, wetting radius and flooding speed of the coal bed are greatly improved, the production amount of working face coal dust is effectively reduced, accident potential is eliminated, and coal mining efficiency is improved.

The invention discloses an iodine disinfectant as well as a preparation method and a using method thereof, and belongs to the technical field of preparation of disinfectants. The iodine disinfectant comprises the following components in percent by weight: 2-3% of iodine, 20-30% of phosphoric acid, 30-50% of a surfactant composition and the balance of water, wherein the surfactant composition comprises the following components in parts by weight: 10-20 parts of benzalkonium bromide, 10-20 parts of decylmethyl ammonium chloride, 5-10 parts of polyoxyethylene octylphenol ether, 5-10 parts of sodium dodecyl sulfonate and 10-20 parts of dodecyl betaine. In summary, the iodine disinfectant prepared according to the preparation method provided by the invention has the advantages of fast sterilization, high sterilization efficiency and the like; meanwhile, the preparation method is simple, and is suitable for large-scale popularization and application.

The invention discloses a betaine-type amphoteric surfactant and a preparation method thereof. The preparation method of the betaine-type amphoteric surfactant comprises the following steps: 1) amidation reaction: under the action of a catalyst, natural oil acid and 3‑ Dimethylaminopropylamine is subjected to amidation reaction, and the water generated by the reaction is removed in time by using 4A molecular sieves to obtain alkylamidopropyl dimethyl tertiary amine; 2) quaternization reaction: alkylamidopropyl dimethyl tertiary amine Perform quaternization reaction with sodium chloroacetate in a solvent to obtain a betaine-type amphoteric surfactant. The amphoteric surfactant group of the invention contains amide bonds, which changes the performance of the molecule, has better foam stability, mild performance, and its emulsifying performance is obviously better than that of the lauryl betaine surfactant. The preparation method of the invention has simple process, low production cost, green and natural raw materials, and absorbs water produced in the amidation reaction process through 4A molecular sieves, thereby improving the yield.

The invention relates to the technical field of stirrers, and particularly discloses a TMR stirrer material contact surface treatment process which comprises the following steps: cleaning a TMR stirrer material contact surface by adopting a cleaning agent, then washing the TMR stirrer material contact surface by adopting water, and drying the TMR stirrer material contact surface after washing the TMR stirrer material contact surface for 2-4 times; evenly coating the TMR stirrer material contact surface with a wear-resistant and corrosion-resistant coating, adopting hot air for curing, controlling the temperature of the hot air to range from 130 DEG C to 150 DEG C, and the time to range from 10 min to 20 min; and conducting cooling at the temperature of 25-35 DEG C to form a film. The wear-resistant and corrosion-resistant coating comprises the following raw materials in parts by weight: 20-40 parts of acrylic resin, 10-30 parts of epoxy resin, 2-3 parts of carbon fibers, 1-2 parts of oxidized paraffin, 2-6 parts of a wear-resistant agent, 1-2.5 parts of a binder, 1-2 parts of oil-based palmitic acid amide and 1-2 parts of dodecyl betaine; and the wear-resistant agent comprises at least one of graphene and jade fiber. The TMR stirrer material contact surface treated by the process has the advantage of good wear resistance.

The invention belongs to the technical field of molecular biology detection. Specifically, the application provides a magnetic bead method saliva DNA extraction kit that only needs one-step washing, which includes a lysis solution, a binding solution, a proteinase K solution, a washing solution and an elution solution. buffer. A saliva DNA extraction kit includes lysing solution, binding solution, proteinase K solution, washing solution and elution buffer. The lysate contains Tris, EDTA, NaCl, NaDC, dodecyl-N-betaine, NLS, GuHCl, TritonX100, NH 4 Cl, mercaptoethanol; binding solution including isopropanol, PEG 8000, Brij 58; washing solution including GuHCl, Tris, ethanol, sodium bicarbonate; elution buffer including Tris, EDTA. In the present application, by preparing a washing solution containing a relatively high concentration of sodium bicarbonate (slightly stronger than sodium acetate and sodium chloride), the ion balance and the effect of providing alkalinity are taken into account at the same time, and a zwitterionic detergent is used in combination. Alkyl-N-betaine, a magnetic bead-based saliva DNA extraction kit was constructed that only required one-step washing.

The invention discloses an improved metal equipment detergent which is prepared from the following raw materials in parts by weight: 4-8 parts of zinc sulfate, 3-9 parts of attapulgite, 4-6 parts of dodecyl dimethyl betaine, 3-7 parts of coconut alkanolamide, 2-5 parts of amino-benzene sulfanilamide, 1-5 parts of cellulose acetate, 4-7 parts of alkyl polyglucoside, 2-4 parts of calcium carbide powder, 1-3 parts of a carboxylate derivative, 3-8 parts of a non-ionic emulsifier and 5-9 parts of polyoxyethylene sorbitan monooleate. The improved metal equipment detergent has the beneficial effects that a good cleaning effect is achieved for oil stain on the surface of metal, the surface of the metal is not damaged, and the equipment can be well protected.