526 results about "Dodecyldimethylbenzylammonium chloride" patented technology

The invention provides a composite air purificant containing nanometer mineral matters, which contains 47wt% to 78wt% of attapulgite as a natural mineral, 20wt% to 50wt% of synthetic zeolite molecular sieve as a molecular sieve, 0.5wt% to 5wt% of sodium carbonate or sodium chloride or sodium fluoride or sodium hydrogensulfite as a modifier, 0.5wt% to 5wt% of ammonium bicarbonate or sodium bicarbonate or aluminum sulfate as a foaming agent, 0.5wt% to 2wt% of dodecyldimethylbenzylammonium chloride as a surface active agent, 0.2wt% to 2wt% of nanometer photocatalyst titanium dioxide colloidal solution as a photocatalyst and 0.1wt% to 1wt% of nanometer aircatalyst titanium dioxide colloidal solution as photochemical catalysts. The composite air purificant is prepared by first drying, first pelleting, second drying, second pelleting, third drying, baking and finish product detection and package. The invention has high alternative adsorbability and high decomposition efficiency for organic pollutants in the air.

The invention discloses an alcohol-free printing fountain solution and a preparation method of the alcohol-free printing fountain solution. The alcohol-free printing fountain solution comprises, by weight, 10-15% of propylene glycol monomethyl ether, 2-4% of ethylene glycol, 4-8% of a citric acid, 0.5-1.5% of sodium hydroxide, 15-25% of glycerinum, 0.1-0.3% of sodium carboxymethyl cellulose, 0.05-0.1% of lauroyl diethanol amine, 0.4-0.6% of liquid tea saponin, 0.3-0.6% of dodecyl dimethyl benzyl ammonium chloride, 0.5-1% of dodecyl glucoside, 0.05-0.1% of 2-ethyl hexanol and 50-55% of water. The alcohol-free printing fountain solution does not contain isopropyl alcohol and is low in toxicity, safe, environmentally friendly, good in printing effect and low in cost, thereby having huge economic benefit and social benefit.

The invention relates to a salt tolerant corrosion and scale inhibitor for underground oil-gas wells and a preparation method thereof. The salt tolerant corrosion and scale inhibitor is composed of an oxazoline derivative, thiourea, cetyl pyridinium chloride, dodecyl dimethyl benzyl ammonium chloride, amino trimethylene phosphonic acid, hydroxyethylidene diphosphonic acid, hexamethylenetetramine, and methanol. The corrosion and scale inhibitor has very strong salt resistance, and under high salinity conditions (100000-200000mg / L), has a significant inhibiting effect on metal corrosion, and the corrosion inhibition rate can reach more than 80%. The organic phosphonic acid molecular structure of the reagent contain a double bond structure, the structure and the calcium ions and magnesium ions in water can chelate to form a stable complex to be adsorbed on seed crystal surface active sites, thereby inhibiting crystal normal growth. With significant scale inhibiting effect and a scale inhibiting rate up to 94%, the product is suitable for inhibiting corrosion and scaling phenomena of oil-gas well rods and pipes containing carbon dioxide, hydrogen sulfide and other complex media conditions under high salinity.

The invention discloses an environment-friendly pickling inhibitor and an application of the environment-friendly pickling inhibitor in the pickling of carbon steel, to effectively solve the problem of the pickling of the carbon steel. The chemical components of the environment-friendly pickling inhibitor include water and any two or three of urotropin, cation surfactant, dodecyl dimethylbenzyl ammonium chloride, octadecyl dimethylbenzyl ammonium chloride, dodecyl dimethylbenzyl ammonium bromide, myristyl dimethyl ammonium chlorid; the method for application of the environment-friendly pickling inhibitor to the pickling of the carbon steel comprises the steps: adding the pickling inhibitor into a hydrochloric acid solution or a sulphuric acid solution with a concentration of 1.0-10mol / L according to the ratio of 1L of acid solution to 0.05g-2g of the pickling inhibitor; immersing the carbon steel to be washed or a carbon steel product in the acid liquid added with the pickling inhibitor; and controlling the temperature to be 20-70 DEG C and immersing time to be 5-20min. The pickling inhibitor provided by the invention is a pickling inhibitor friendly to the environment. The pickling inhibitor is non-toxic and harmless, is environment friendly, does not cause environmental problems after application, and conforms to the development trend of the green corrosion inhibitors.

Provided is a cutting fluid containing waste engine oil. The cutting fluid is prepared from the following raw materials, by weight, 12-14 parts of waste engine oil, 1-2 parts of triethanolamine, 4-6 parts of amino-acid ester, 2-3 parts of phytic acid, 2-3 parts of dodecyl dimethyl benzyl ammonium chloride, 1-2 parts of nanoscale graphite micropowder, 14-16 parts of diethylene glycol monobutyl ether, 5-8 parts of propylene glycol, 1-2 parts of sodium laurate, 6-8 parts of auxiliary agents and 200 parts of water. Through application of nanoscale graphite micropowder, the cutting fluid has excellent lubricating property and extreme pressure resistance. Through application of waste engine oil, the cost is lowered. The cutting fluid has good antirust performances, contains no substances of sodium salt, phenol, chlorinated paraffin, mineral oil and the like, has no damage to human body, and is a environmentally friendly and green product.

The invention discloses a sterilizing and algae-removing agent and an application thereof. The sterilizing and algae-removing agent consists of the following components in parts by weight: 100 parts of dodecyl dimethyl benzyl ammonium chloride, 4-6 parts of sulfamic acid, 60-80 parts of isothiazolinone, 10-20 parts of crylic acid-acrylic ester-sulfonate terpolymer, 60-80 parts of attapulgite clay, 0.2-0.4 parts of 4,4' dichloro-2-hydroxy diphenyl oxide, 4-6 parts of dodecyl ethoxy imidazolidine, 10-18 parts of sodium dichloro isocyanurate, 10-18 parts of methane dithiocyanate and 1-2 parts of epoxiconazole. The sterilizing and algae-removing agent has the advantages of efficient sterilizing and algae-removing performance, small using amount, safety, nontoxicity and environmental friendliness. The sterilizing and algae-removing agent is applied to sterilizing treatment of a circular water system.

The invention relates to rapid judgment for the corrosion of a sodium bicarbonate water type oil well, which is applied to the corrosion treatment of a pit shaft of the oil well. A production liquid is of a sodium bicarbonate water type. When the mole ratio of Ca to HCO3- is between 0 and 1 and less than 0.6, the corrosion which is local corrosion and scale formation coexist; along with the increase of the mole ratio of the Ca to the HCO3-, the scale formation of the pit shaft is relieved, but the corrosion becomes serious; and when the mole ratio of the Ca to the HCO3- is greater than 0.6, the pit shaft of the oil well is mainly corroded. The corrosion condition of a sodium bicarbonate water type medium is fast known through the mole ratio of the Ca to the HCO3-. A corrosion inhibitor for the sodium bicarbonate water type medium is made from the following components in percentage by weight: 20 to 35 percent of carboxylate sodium imida, 20 to 35 percent of water-soluble rosinyl imidazoline, 5 to 10 percent of dodecyldimethylbenzylammonium chloride, 0 to 5 percent of aminotri-methylene phosphonic acid, 0 to 5 percent of hydroxyl ethidene diphosphonic acid, 5 to 10 percent of methanol, 2 to 5 percent of dispersant and the balanced of water. The rapid judgment and the corrosion inhibitor can improve the efficiency of corrosion inhibition.

The invention provides a disinfecting detergent and a preparation method thereof. The disinfecting detergent contains didecyldimethylammonium chloride, didecyldimethylammonium bromide, poly(hexamethylene biguanide) hydrochloride, dodecyldimethylbenzylammonium chloride, fatty alcohol-polyoxyethylene ether (9), fatty alcohol polyoxyethylen ether (7), fatty alcohol polyoxyethylen ether (8), alkyl polyglucoside, alkanolamides of fatty acids, lauramidopropyl betaine, essence, citric acid monohydrate food grade and deionized water. The method has the advantages of environmentally-friendliness, combination of disinfection and cleaning, synchronous completion of stain removal and disinfection, safety, unstimulating property, and resource conservation.

The invention discloses a novel wood mould-proofing insect-resist agent which contains effective components and solvent; the effective components comprise carbendazim, sodium borate and dodecyl dimethyl benzyl ammonium chloride; the novel wood mould-proofing insect-resist agent is formed by compounding various sterilization insecticides, the biotoxicity is reduced and the ecological destruction is reduced; in addition, the novel wood mould-proofing insect-resist agent has the characteristics of remarkable and overall drug effect, long residual period, high penetrability and good environment-protection performance; the novel wood mould-proofing insect-resist agent is suitable for four-protection treatment of the wood and protective treatment of indoor wood products and components of houses; the treatment method of the rubber wood can completely replace the usage of BBP preservative to toxic materials.

The invention relates to functional graphene oxide modified composite gel electrolyte and a preparation method thereof. The composite gel electrolyte is characterized by comprising the following components in part by weight: 1 part of functional graphene oxide, 300 to 1,000 parts of polymer matrix and 450 to 1,500 parts of LiClO4 propylene carbonate solution, wherein the functional graphene oxide is obtained by performing functional reaction on graphene oxide and dodecyl dimethyl benzyl ammonium chloride. The addition of quaternary ammonium salt is the simplest method for improving the dispersibility of the graphene oxide in an organic solvent, the nano-composite gel electrolyte is prepared by adding the functional graphene oxide into an electrolyte solution, so that the electrical property is further improved; and the functional graphene oxide modified composite gel electrolyte can meet the requirement of lithium ion battery electrolyte on ionic conductivity.

The invention belongs to the technical field of water treatment, and particularly relates to a sterilizing stripper dedicated for oilfield injection water and a preparation method thereof. The sterilizing stripper dedicated for the oilfield injection water is characterized by compounding the following materials in percentage by weight: 15 to 35 percent of tetrakis hydroxymetyl phosphonium sulfuric, 10 to 35 percent of dodecyl dimethyl benzyl ammonium chloride, 0.5 to 1.0 percent of sodium dioctylsulfosuccinate, and the balance of deionized water. The preparation method comprises the followingsteps: adding the deionized water into a reaction kettle; and adding the tetrakis hydroxymetyl phosphonium sulfuric, the dodecyl dimethyl benzyl ammonium chloride and the sodium dioctylsulfosuccinate, and stirring for 40 to 50 minutes at normal temperature. By the method, the stripping performance of the sterilizing stripper and the killing performance to bacteria, particularly sulfate reducing bacteria, are improved; the sterilizing stripper has strong sterilization capability, good penetration and remarkable stripping effect; and the preparation process is simple and easy to operate.

The invention discloses special underwear laundry detergent and a preparation method for the same, which belong to the field of daily chemical engineering. According to the ratio of parts by weight, raw materials include 5-25% of sodium dodecyl benzene sulfonate, 5-10% of coconut oil fatty acid diethanol amide, 2-5% of alkyl phenol polyoxyethylene (OP-10), 2-4% of dodecyl dimethyl betaine (BS-12), 0.1-1% of carboxymethylcellulose, 0.05-1.20% of ethylene diamine tetraacetic acid, 0.1-5.45% of polyhexamethyl biguanide, 0.3-10% of dodecyl dimethyl benzyl ammonium chloride, 1-3% of salt, 0.1-0.3% of essence and 50-80% of deionized water. The preparation method includes that the deionized water and the raw materials are added into a material dissolving kettle for dissolving the materials, and then the special underwear laundry detergent is obtained. The special underwear laundry detergent and the preparation method have the advantages that biguanides and bis-quaternary ammonium are adopted for sub-composition and can effectively act on germs under the effect of special penetration enhancers, germicidal power is improved, and the special underwear laundry detergent can be stored stably and is less in consumption and high in cost performance.

The invention relates to compound quaternary ammonium salt disinfectant, which comprises dodecyldimethylbenzylammonium serving as a germicide, a double long-chain quaternary ammonium salt with high interference resistance and a synergist. The main technical characteristics of the compound quaternary ammonium salt disinfectant is the adoption of the high-safety mild and nonirritating poly(quaternary ammonium salt) which is formed by grafting C11 to C18 long-chain alkyl on the surface of an amino-terminated hyperbranched quaternary ammonium salt compound. The disinfectant can quickly kill board-spectrum fungi, saccharomycetes, mould, Escherichia coli, Staphylococcus aureus, Candida albicans, Pseudomonas aeruginosa, virus and the like; with disinfection concentration, the disinfectant is low in toxicity and irritability; being noncorrosive, the disinfectant avoids corroding pipes made of stainless steel, copper, aluminum and the like; and the disinfectant has high biodegradability, avoids polluting the environment and meets requirements for environment protection. The disinfectant can be used for disinfecting surfaces of common objects and disinfecting food processing equipment, cotton and chemical fiber textiles, skin, adhesive films and the like.

The invention relates to surface active agent used for filthy mud dehydration. The addition of dodecyl benzyl dimethyl ammonium chloride is 1.42 to 2.07 percent by weight of the solid content of the filthy mud. The surface active agent has the advantages of low specific impedance value of the filthy mud after the surface active agent is added and high solid content ratio of filter mass after dehydration. In a method for filthy mud dehydration with the surface active agent, pressure filtration dehydration is carried out with a plate and frame filter press, the filthy mud injection pressure is progressively increased, the sewage and filthy mud to be regulated is injected into a filter press at certain injection pressure, and when the filter press is full, filtrate discharging flux is V1; when the filtrate discharging flux is lower than one half of V1, the filthy mud injection pressure is increased to a higher level, and the filtrate discharging flux is increased to V2; when the filtrate discharging flux is lower than one half of V2, the filthy mud injection pressure is increased to a higher level again, so that the filthy mud injection pressure is progressively increased to the preset pressure in this way, then feeding is stopped and the pressure is maintained, and finally the membrane extrusion is carried out. The method has the advantages of uniform increase of the density of mud cakes and small filtration resistance in filtration.

The invention relates to a seawater base fracturing fluid which comprises a seawater base fluid, a gel breaking agent equivalent to 0.1-0.8% of the weight of the seawater base fluid, and a cross-linking agent equivalent to 0.2-0.8% of the weight of the seawater base fluid, and is characterized in that the seawater base fluid comprises the following components in percentage by weight: 0.3-0.6% of a thickening agent, 0.1-1% of a discharge aiding agent, 0.5-3% of a clay stabilizing agent, 0.01-0.1% of a sterilizing agent and the balance being seawater; the gel breaking agent is ammonium persulfate or sodium persulfate; the cross-linking agent is aluminum chloride or zirconium acetate; the clay stabilizing agent is potassium chloride or ammonium chloride; the discharge aiding agent is dodecyltrimethylammonium bromide or cetyltrimethylammonium bromide; and the sterilizing agent is methanal or dodecyl dimethyl benzyl ammonium chloride. The seawater base fracturing fluid has the advantages that the salt tolerance of the seawater base fracturing fluid is outstanding and stable cross-linking can be achieved in a weak alkaline environment.

The invention discloses a dope used for spraying vegetable fiber paper mould products, the spraying method and the application thereof. The formulation of the dope comprises according to the mass portions: 100 portions of calcium carbonate and kaoline, 10-16 portions of carboxylated styrene-butadiene latex, 0.5-1.5 portions of modified melamino-formaldehyde resin waterrepellent agent, 0.5-1.5 portions of calcium stearate lubricant, 0.2-0.8 portions of polyacrylate sodium dispersant, 0.1-0.8 portions of carboxymethyl cellulose rheology modifier and 0.01-0.05 portions of DDBAC disinfectant. The spraying method is as follows: the space between a nozzle and the vegetable fiber paper mould products is 15cm-35cm; the spraying time is among 3s-20s; the coating weight is 1-30g / m2; and then press finishing is carried out on the spraying products. The invention has simple coating technique and convenient application. The dope is environment friendly, can better meet the heteromorphosis spread coating of the mould products and increases the product added value.

The invention belongs to a fracturing fluid additive, and in particular relates to a formulation of a gas-well water-lock damage treating agent. The formulation is characterized in that the treating agent is formed by matching the following components in weight percentage: 20.0 to 25.0 percent of benzyltributylammonium bromide or benzyltributylammonium chloride as a main agent, 2.0 to 5.0 percent of polyoxyethylene nonyl phenyl ether or sucrose fatty acid ester as nonionic surfactant, 0.5 to 1.0 percent of SR18Y fluorocarbon surfactant produced by Shaanxi Senrui Science and Technology Co., Ltd, 12.0 to 15.0 percent of dodecyl benzyl dimethyl ammonium chloride or hexadecyl trimethyl ammonium bromide as cationic surfactant, and the balance being distilled water. The gas-well water-lock damage treating agent prepared according to the formulation has the advantages of reducing gas-well water-lock damage, lowering starting pressure, improving the gas phase permeability of rock cores and protecting reservoirs.

The invention discloses a compound liquid laundry detergent and a preparation method thereof. The compound liquid laundry detergent comprises, by mass, 10 to 15% of fatty alcohol polyoxyethylene ether-9, 5% of fatty alcohol polyoxyethylene ether-7, 4 to 6% of sodium fatty acid methyl ester sulfonate, 4 to 6% of sodium dodecyl sulfate, 6 to 8% of cocamidopropyl hydroxysulfobetaine, 3 to 4% of dodecyl dimethyl benzyl ammonium chloride, 10% of propylene glycol, 2% of ethanol, 0.25% of a modified organosilicon antifoaming agent AFE-1410, 2% of an auxiliary agent, 0.03% of a fluorescent brighting agent CBS-X, 0.03% of essence, 0.01% of pigment and 1 to 3% of a thickening agent, with the balance being deionized water. Through mutual penetration and synergism of the raw materials, the compound liquid laundry detergent has the characteristics of better detergency, stability, low foam, softness, no harm to a water body, easy degradation, etc. The raw materials used for preparation of the compound liquid laundry detergent are easily available and environment-friendly; and the preparation method is simple and easily practicable.

The invention relates to a medicine, in particular to broad-spectrum and high-efficiency antibacterial washing liquor and a preparation method thereof. The invention is characterized in that the antibacterial washing liquor is prepared by the following materials according to the weight ratio: 0.0001-2.0 of N-coconut-oil fatty-acid acyl L-arginine ethyl ester DL-pyrrolidone carboxylate, 0.0001-1.0 of dodecyl dimethyl benzyl ammonium chloride, 10.0-99.995 of water, and the balance of auxiliary materials. The broad-spectrum and high-efficiency antibacterial washing liquor has the following characteristics and advantages that pathogenic microorganisms are killed in a broad-spectrum and high-efficiency manner; ureaplasma urealytium, gonococcocci and trichomonas vaginalis can be killed in one minute; the killing rate for escherichia coli, staphylococcus aureus and candida albicans is respectively more than 99%; non-toxic; no stimulation is caused to the skin; no allergic reaction is caused; no stimulation is caused to the eyes; no stimulation is caused to vaginal mucosa; and the pH value of a preparation is close to that in the normal vagina.

The invention discloses a lubricant for root canal therapy, which comprises ethylenediamine tetraacetic acid sodium salt, phytic acid, dodecyldimethylbenzyl ammonium chloride, Tween, cellulose, glycerol, germicide and water. Because the phytic acid has strong metal ion complexing capability and pH value adaptive ability, the product is easy for reaming and filing operation in the process of the root canal therapy; because the phytic acid has effects of corrosion prevention and bacterium inhibition, the stability and quality guarantee period of the product are improved; by adopting non-peroxide germicide and a pasting agent complexed by the Tween, the dodecyldimethylbenzyl ammonium chloride, the cellulose and glycerol, the surface tension and the fluidity of the product are adjusted by adjusting the proportions of all components in the pasting agent while improving the stability of the product, and the product not only can be used for syringe injection but also can be used for needle stick guide operation; and the invention can effectively remove a staining layer, the germicide added into the lubricant can kill pathogenic bacteria in the root canal reaming and filing process, therefore, the success rate of the root canal therapy is effectively improved.

The invention discloses a water-resistant fireproof coating. The coating comprises the following raw materials by weight: 20 to 50 parts of self-crosslinking elastic acrylic emulsion, 5 to 10 parts of copolymer emulsion of vinyl acetate and ethylene, 10 to 25 parts of a flame retardant, 10 to 25 parts of a pigment filler, 2 to 10 parts of propylene glycol, 0.2 to 1 part of 2-ethyl-4-methylimidazole, 0.5 to 1 part of polyvinylpyrrolidone, 0.2 to 1 part of sodium carboxymethylcellulose, 0.2 to 1.5 parts of 1,2-benzisothiazol-3-one, 0.3 to 1.2 parts of dodecyl mercaptan, 0.1 to 0.8 part of dodecyl dimethyl benzyl ammonium chloride, 0.5 to 1.5 parts of a defoaming agent, 0.5 to 2 parts of aluminium triphosphate and 25 to 40 parts of water. The water-resistant fireproof coating provided by the invention has the advantages of high strength, excellent fireproof property and water resistantce, strong adhesive force with a substrate, high bonding strength and long service life.

The invention discloses a water-based chlorine dioxide sterilizing disinfectant. The technical scheme puts emphasis on that the water-based chlorine dioxide sterilizing disinfectant comprises deionized water, chlorine dioxide, nanometer titanium dioxide and silver germicide, dodecyl dimethyl benzyl ammonium chloride and cocamidopropyl betaine. Materials of the water-based chlorine dioxide sterilizing disinfectant are added to a stirrer to be uniformly stirred and dissolved and then canned as a water-based chlorine dioxide sterilizing disinfectant finished product. The water-based chlorine dioxide sterilizing disinfectant has the advantages of convenient use, uniformly spraying, small using amount, long effective sterilizing and disinfecting time and high sterilizing and disinfecting efficiency, only generates oxidation without chloration and is safe without residuals, beneficial to the normal growth of livestock and poultry without stimulation on human bodies and suitable for the sterilization, the disinfection and the deodorization of livestock and poultry culturing farms and other places.

The invention discloses an attapulgite oil-extracting and water-injecting sterilizing algicide for an oil field, which comprises salt-resisting attapulgite clay, dithiocyano-methane, lauryl dimethyl benzyl ammonium chloride, stearyl ethoxyl imidazoline and solid silicone defoaming agent. The ingredients of the attapulgite oil-extracting and water-injecting sterilizing algicide are added into a stirrer for stirring, ground after being uniformly stirred and mixed, and packaged into the finished product of the attapulgite oil-extracting and water-injecting sterilizing algicide. The attapulgite oil-extracting and water-injecting sterilizing algicide has broad spectrum and highly-efficient sterilizing and alga-killing capacity, a certain oil-removing and deodorizing capacity and corrosion-releasing and scale-inhibiting functions, and functions of protecting well walls, reducing the well abandonding rate, improving the drilling efficiency and lowering the drilling cost, and is suitable for sterilizing and killing alga and releasing corrosion and inhibiting scale of injected water of the oil field.

The invention relates to the field of compound fertilizers and particularly relates to a selenium-enriched efficient sustained release compound fertilizer which is prepared from the following raw materials in parts by weight: 10-15 parts of 1250-2000-mesh diatomite, 20-25 parts of urea, 10-12 parts of ammonium dihydrogen phosphate, 2-4 parts of zinc sulfate, 6-8 parts of tertiary calcium phosphate, 10-12 parts of potassium chloride, 18-22 parts of dried pig manure, 15-17 parts of soybean meals, 10-12 parts of soybean straw powder, 10-12 parts of detoxified tung seed cake, 4-6 parts of Japanese banana leaf pulp, 3-5 parts of water hyacinth powder, 10-12 parts of hydroxymethyl cellulose, 4-5 parts of polyacrylamide, 0.1-0.2 part of ammonium bicarbonate, 0.2-0.3 part of camphor, 2-4 parts of selenium-enriched yeast, 1-2 parts of alkyldimethyl benzylammonium chloride, 2-3 parts of nanocarbon, 2-4 parts of zinc gluconate, 6-8 parts of table vinegar and 4-5 parts of additive. The compound fertilizer is prepared from easily available raw materials and is rich in nutrients; the nutrients which are doubly coated by using diatomite and a coating agent cannot be easily lost, thus the fertilizer effect lasts very long time; and the raw materials contain abundant selenium element after being fermented by the selenium-riched yeast, thus the selenium-enriched efficient sustained release compound fertilizer is capable of increasing the content of the selenium in crop fruits, increasing the economic value of vegetables and fruits, and remarkably improving the benefit.

The invention provides a high-efficiency bactericide for papermaking white water, which contains 1.6-3.2% of 5-chloro-2-methylisothiazolin-3-one, 0.4-0.8% of 2-methylisothiazoline- 3-ketone, 20-40% dodecyl dimethyl benzyl ammonium chloride, 4.0-5.0% magnesium nitrate or magnesium chloride, this bactericide has good bactericidal effect and high chemical stability, it is added to papermaking white water Among them, it can inhibit the reproduction of microorganisms in papermaking white water and kill microorganisms. The killing effect on microorganisms in papermaking white water can reach 95-99.9%, so that repeated recycling of papermaking white water will not cause various paper problems due to microbial problems. The occurrence of diseases (broken paper, holes, needle holes, etc.).

The invention discloses a carbon dioxide corrosion inhibitor which consists of the following components in percentage by mass: 70-80% of clear water, 4-6% of dodecyl dimethyl benzyl ammonium chloride, 8-12% of imidazoline, 4-6% of alkyne-oxy methylamine and 4-6% of dodecyl trimethyl ammonium chloride. The preparation comprises the following steps: weighing the components according to the mass proportion and placing separately for later use; adding 70-80% of the clear water by mass into a mixer and starting stirring for 3-5min; adding the dodecyl dimethyl benzyl ammonium chloride into the mixer and starting stirring for 12-18min; adding the dodecyl trimethyl ammonium chloride into the mixer and starting stirring for 12-18min; adding the imidazoline into the mixer and starting stirring for 12-18min; and adding the alkyne-oxy methylamine into the mixer and the rest clear water, and starting stirring for at least 20min until the drug is uniformly mixed before stopping the stirring. The carbon dioxide corrosion inhibitor disclosed by the invention realizes a good corrosion inhibition effect on the sewage with high content of carbon dioxide in an oilfield, can effectively control the corrosion of sewage at low concentration and effectively saves the drug cost as well as the repair and maintenance cost of the oilfield water treatment equipment; and moreover, the preparation method is simple and fast, the production cost is low and the efficiency is high.

The invention relates to a cleanser for a waterer drip nozzle for livestock and a preparation method thereof. The cleanser provided by the invention mainly comprises didecyl dimethyl ammonium bromide, aqueous antiscale dispersant, antimicrobial, dodecyl dimethyl benzyl ammonium chloride, purified water and the like, and is prepared by the conventional process of a liquid disinfectant. The cleanser can be used for disinfecting livestock stables, feeding apparatuses, drinking water and the like, and can be also used for cleansing impurities and drug residues at a waterer pipeline for livestock and a drinking water nozzle. Besides, the preparation process of the cleanser is simple, and is extremely suitable for use of farmers and business popularization of the product, thereby having broad market prospects.

The invention discloses a reverse osmosis water treatment agent and a preparation method thereof, which belong to the field of polymer chemistry. The formula of the reverse osmosis water treatment agent consists of the following components in percentage by weight: 10 to 40 percent of the mixture of two organic phosphonic acid compounds, 1 to 10 percent of polyacrylic acid and / or sodium salt of the polyacrylic acid, 2 to 9 percent of hydrolyzed polymaleic anhydride, 2 to 20 percent of sulfonic acid copolymer, 0.1 to 3 percent of dodecyl dimethyl benzyl ammonium chloride and the balance of water. When used in a reverse osmosis water treatment system, the agent can prevent scales of CaCo3, CaSO4, Ca3(PO4)2, BaSO4, SrSO4 and the like and the deposition of iron hydroxide and zinc salt on a reverse osmosis membrane, so that the chemical cleaning period and the service life of the reverse osmosis membrane are prolonged.

The invention relates to a novel bactericide for oil fields. The novel bactericide is prepared from the following raw materials, by weight, 55-65 parts of dodecyl dimethyl benzyl ammonium chloride (1227), 18-22 parts of water, 8-12 parts of a didecyl quaternary ammonium salt, 4-6 parts of bronopol, and 4-7 parts of glutaraldehyde. The novel bactericide is prepared through placing 1227 and water in a reaction vessel in order under normal temperature and normal pressure conditions, adding the didecyl quaternary ammonium salt with stirring, uniformly mixing, slowly adding bronopol and glutaraldehyde, and stirring for 20-30min. The effective content of the selected didecyl quaternary ammonium salt is equal to or greater than 30.0%. The novel bactericide which has good water solubility and has an extremely good corrosion resistance to metals has a sterilization rate of above 95%. The novel bactericide of the invention can be evaluated as a standard reaching product according to "a method for evaluating performances of a bactericide" of a petroleum standard SY / T5890-93.