120 results about "Etidronic acid" patented technology

The invention discloses an etidronic acid with the content of arsenic less than or equal to 3ppm and a process for preparing the same. The method is to use phosphorus trichloride, acetic acid and ammonium thioacetamide as raw materials and comprises the following steps of: putting one-third of the acetic acid and the ammonium thioacetamide into a reaction kettle, stirring to control the temperature and the pressure, slowly dropping one-third of the phosphorus trichloride and putting one-third of the ammonium thioacetamide into the reaction kettle, stopping stirring and keeping stand; controlling the temperature and the pressure; dropping the remaining phosphorus trichloride into the reaction kettle; then stirring for 1 hour with the rotational speed of 50 to 60 revolutions per minute, raising the temperature slowly and reflowing; controlling the temperature and the pressure while reflowing; hydrolyzing the esters produced after reflowing under the negative pressure; concentrating the materials, filling air, removing impurities, reducing the temperature, putting the remaining phosphorus trichloride into the reaction kettle, sealing the reaction kettle and keeping stand, and then putting the materials into a mixing tank; regulating and filtering the materials so as to obtain an HEDP product. The product has extremely little arsenic with less than or equal to 3ppm, which not only reduces the environmental pollution, but also expands the application fields.

The invention belongs to the technical field of concrete admixtures, in particular to an antifreeze concrete water-reducer, which is made of the following raw materials in parts by weight: 35-60 parts of polycarboxylate water-reducer, 1-2.2 parts of tea saponin, alkyl 0.5-1.5 parts of glucoside, 0.5-2.8 parts of sodium carboxymethylcellulose, 0.3-0.9 parts of borax, 0.2-0.8 parts of hydroxyethylidene diphosphonic acid, 10-25 parts of water. The antifreeze concrete water reducer of the present invention not only has good water reducing effect, but also has good antifreeze performance and can strengthen the strength of concrete.

The invention provides an efficient acidic cleaner which is prepared from the following components in parts by weight: 30 to 100 parts of citric acid, 5 to 50 parts of sulfamic acid, 5 to 40 parts ofoxalic acid, 5 to 50 parts of etidronic acid monohydrate, 5 to 40 parts of polyacrylic acid and 680 to 800 parts of deionized water. The efficient acidic cleaner provided by the invention is low in cost and convenient to clean, and can effectively remove deposited dirt from an aluminum alloy, a metal, stainless steel, glass or plastic; by compounding of the citric acid and the oxalic acid which are relatively low in acidity, use of hydrochloric acid and sulfuric acid is avoided, and the dirt can be effectively removed without damaging instruments. The acidic cleaner is wide in use range, and can be used for clearing away the deposited dirt from various instruments and components.

The invention belongs to the field of fine chemical industry, and particularly relates to a reinforced heat-transfer agent for a heating system. The reinforced heat-transfer agent can reinforce the heat-transfer efficiency of the heating system and prevent heating equipment pipelines from rusting. The reinforced heat-transfer agent for the heating system is prepared from, by weight, 0.05%-0.2% of penetrant, 15%-26% of etidronic acid, 1%-3% of dodecyl dimethyl benzyl ammonium bromide, 10%-15% of polyacrylic acid, 0.8%-2% of 1,2-aminoazophenylene, 0.2%-1% of high fine graphite powder, 3%-6% of sodium silicate and the balance water. According to the reinforced heat-transfer agent for the heating system, by means of the dispersive action of the heat-transfer agent, dirt of rust deposits and the like on the surface inside heating equipment can be gradually cleaned away, thermal-conduction resistance is reduced, the flow velocity of water is increased, and the heat-transfer capacity is enhanced; scattered dirt is in a molecular state or an ionic state, and the heat-transfer rate of the water can be increased; the heat-transfer agent can form thin and compact supramolecular protective film on the clean metal surface, corrosion inhibition and scale inhibition effects are close to 100 percent, and the efficient heat-transfer capacity is guaranteed.

The invention provides a nano corrosion and scale inhibitor and a preparation method thereof. The nano corrosion and scale inhibitor comprises the following raw material components in parts by weight:30 parts of nano calcium carbonate, 5 parts of nano strontium sulfate, 8 parts of a carboxylic copolymer, 8 parts of metallic salt, 5 parts of phosphorus pentoxide, 20 parts of amino ether phosphonicacid, 5 parts of etidronic acid, 3 parts of polymaleic acid, 5 parts of mercaptobenzothiazole, and 2 parts of sodium hypophosphite. The nano corrosion and scale inhibitor has the advantages of beingconvenient to store and transport, low in metal corrosion in boiler, pipeline and pressure vessel washing, high in antisludging capacity, safe to use, and small in environmental pollution.

The invention discloses a method for producing etidronic acid, relating to an improved technology of the production process of a water treatment agent, namely, etidronic acid and belonging to the technical field of chemical engineering. According to the method, hydrogen chloride is introduced into the raw materials for reaction, so that water dissolution heat for hydrogen chloride is reduced in the hydrolysis process of phosphorus trichloride, furthermore, the hydrolysis intensity of the phosphorus trichloride is inhibited, the reaction can be carried out stably, and side reactions of hydrolysis of acetylchloride also can be reduced. The method has the beneficial effects that the reaction can be carried out smoothly at the beginning, side reactions are reduced, and the production is relatively high; in middle stage, the reaction of phosphorous acid can be accelerated, so that the reaction time can be shortened obviously, the recycled acetylchloride and acetic acid and a cleaning solution can be reused, and the quality of byproduct hydrochloric acid is improved.

The invention discloses a method for treating heavy metal sewage, which is extracted by polymerizing ferrosilicon sulfate, polyacrylamide, aluminum tripolyphosphate, petroleum ether, octadecyl dimethyl, manganese sulfate, hydroxyethylidene diphosphonic acid and brown algae Compound sewage treatment agent formulated with alum, tertiary butyl hydroquinone, pyrrolidone, thiabendazole, and ethyl naphthol reacts with sewage by stirring, after ultrasonic treatment, the ion exchange column is eluted through the column, and the flocculant is stirred, flocculated and precipitated , the flocculation supernatant is passed through a column adsorption resin, filtered through a membrane filter, and sterilized to obtain discharge standard treated water. The method has high removal efficiency for heavy metals in sewage, simple and easy process, strong operability, no pollution to the environment, can meet the requirements of the industry, and has good application prospects.

The invention relates to the technical field of water quality stabilizers, in particular to a preparation method of an efficient scale-inhibiting corrosion-inhibiting low-phosphorous water quality stabilizer. According to the preparation method, L-aspartic acid and sulfuric acid are used for being subjected to reaction at a high temperature to produce polysuccinimide, ammonia, ethanolamine, phosphorus trichloride and formalin are mixed to modify the polysuccinimide, the modified polysuccinimide is introduced onto carboxyl and phosphate, and the mixture and metal ions Ca2+ form a stable chelate, so that the scale-inhibiting performance and the corrosion-inhibiting performance of the water quality stabilizer are improved. Etidronic acid, a citric acid polymer, polyacrylic acid, polycarboxylic acid are added and form a stable complex with multiple kinds of metal ions so that oxide on the surface of metal can be dissolved. The polycarboxylic acid is subjected to chelation in water, and absorption is conducted due to polar groups, so that scale is inhibited, the scale-inhibiting performance and the corrosion-inhibiting performance of the water quality stabilizer are further improved, and the method is not only economical but also environmentally friendly and has a wide application prospect.

The invention provides a bacteriostatic and mite-removing shampoo and a preparation method thereof, and relates to the field of daily chemicals. The bacteriostatic and mite-removing shampoo is prepared from the following raw materials: sodium laureth sulfate, decyl glucoside, behenamidopropyl dimethylamine, cocamide MEA, Polyquaternium-52, Cocamidopropyl betaine, ziziphus joazeiro bark extract, Piroctone ethanolamine salt, Gentian extract, guar hydroxypropyl trimethyl base ammonium chloride, polyquaternary ammonium salt-10, Cnidium Monnieri fruit extract, dimethiconol, amino-terminated Polydimethylsiloxane, plant extract, nicotinamide, etidronic acid, Carbomer, sodium hydroxide, preservatives, flavors, hexamidine bis (hydroxyethanesulphonic acid) salt, menthol and water, wherein the plantextracts are clove bud extract, litsea eubeba extract, thyme extract and lightyellow sophora root extract. The shampoo obtained through the mutual matching of the components and the optimization of the preparation method has good antibacterial and mite-removing effects.

The invention discloses a cleaning dedusting agent and a die-cast zinc alloy pretreatment method. The cleaning dedusting agent is prepared from the following components with the following concentrations: 30 to 80 g/L of diethylenetriamine, 30 to 80 g/L of triethylene tetramine, 1 to 25 g/L of etidronic acid, 1 to 25 g/L of potassium peroxodisulfate, 1 to 25 g/L of ammonium persulfate, 1 to 25 g/L of hydrogen peroxide, 0.1 to 1 ml/L of a surfactant and the balance of water. The environmentally-friendly surface cleaning dedusting agent for a die-cast zinc alloy can enable a dusty zinc alloy surface, which is blackened by acid pickling, to be a semi-bright or clean and bright metal surface, and subsequent surface treatment is facilitated, such as chromate-free passivation or electroplating with other metals. The cleaning dedusting agent facilitates environmental protection and is relatively high in safety; wastewater is nontoxic, and wastewater treatment is facilitated; and the treated zinc alloy surface is high in adhesive force to a coating.

The invention relates to a molybdate passivation solution and a method for passivating manganese metal by using the molybdate passivation solution. The method is characterized by comprising the following steps of (1) extracting molybdate, blending triethanolamine and etidronic acid to form a complexing agent, adding water into the molybdate and the complexing agent to prepare the passivation solution, wherein the content of ammonium molybdate is controlled to be 1.0 to 4.0 mass percent, the content of the triethanolamine is controlled to be 0.5 to 1.0 mass percent, and the content of the etidronic acid is controlled to be 0.05 to 0.15 mass percent; and (2) passivating the manganese metal in the obtained passivation solution, wherein the passivation temperature is controlled to be 15 to 35 DEG C, the passivation time is controlled to be 30 to 90 seconds, and the pH of the passivation solution is controlled to be 6 to 7. According to the molybdate passivation solution and the method, the complexing agent is effectively selected and matched with the molybdate to passivate the manganese metal to form a layer of molybdate passivation film on the surface of the electrolytic manganese metal, so that the manganese metal is effectively prevented from corrosion; and the method can be used instead of a conventional dichromate passivation method, chromium-free passivation is actually realized from the source, and the aim of zero emission of chromium is fulfilled.

The invention belongs to the technical field of oilfield water treatment and relates to a scale inhibitor for oilfield water injection. The technical scheme includes that the scale inhibitor for oilfield water injection is characterized by being prepared from, by weight, 1-3 parts of amino trimethylene phosphonic acid, 1-2 parts of etidronic acid, 2-4 parts of ethylenediamine tetra(methylene phosphonic acid) sodium, 4-8 parts of ammonium molybdate, 6-10 parts of EDTA (ethylene diamine tetraacetic acid), 6-10 parts of polyaspartic acid, 1-3 parts of chitosan and 20-35 parts of water. The scale inhibitor for oilfield water injection is environment friendly.

The invention discloses a passivator for metal plates. The passivator for metal plates is prepared from, by weight, 1-2 parts of phosphoric acid, 7.8 parts of phosphoric acid, 0.7 part of residue extract of rhizomes of shouliang yam, 1.1 parts of sodium dodecyl sulfate, 2.3 parts of vinyl trimethoxy silane, 0.9 part of dodecyltrimethylammonium bromide, 8.4 parts of etidronic acid, 1.2 parts of sodium alkyl succinic ester sulfonate, 0.7 part of sodium aluminate and 36 parts of deionized water. The passivator for metal plates can be used for passivating treatment of metal, a uniform passivating protection film can be formed on the surface of metal, and the protection film has excellent rust-proof performance, abrasion resistance, corrosion resistance, heat resistance, cold resistance and weather resistance and is good in surface smoothness.

The invention discloses an antirust fluid for an inner cavity of a metal part. The anti-rust fluid is prepared from the following raw materials in parts by weight: 3-4 parts of critic acid, 2-3 parts of triethanolamine, 2-3 parts of petroleum sodium sulfonate, 1-2 parts of fatty alcohol-polyoxyethylene ether, 1-2 parts of sodium molybdate, 30-34 parts of ethanol, 2-3 parts of etidronic acid, 3-4 parts of 2-butoxy-ethanol, 1-2 parts of isopropanol, 10-12 parts of ethoxylated trimethylolpropane triacrylate, 1-2 parts of ethylene diamine tetraacetic acid (EDTA) disodium, 4-5 parts of assistant and 300 parts of water. A film can be formed on the metal surface by using polymer resin and a chelating agent, so as to play air-isolation and anti-oxidation roles; meanwhile, an antirust agent can be firmly adhered, so that the anti-rust effect is long; the ingredients such as volatile acid, heavy metal ions, sodium nitrite and the like do not exist, so that the antirust fluid is free of residual rust slag, free of pollution, low in cost and good in economic benefits, and can be applied to rust control of inner cavity parts of a car of cast iron and steel materials in batches; the anti-rust requirements of the cast iron or steel parts of the car are met.

The invention relates to the technical field of building materials, in particular to nano cement paste. The nano cement paste comprises, by mass, 40-60 parts of portland cement, 12-28 parts of modified nano-silica, 10-18 parts of nano-magnesia, 0.08-0.24 part of retarder etidronic acid, 0.8-1.8 parts of defoamer tributyl phosphate, 4-12 parts of soot, 0.8-2.4 parts of polypropylene fibers, 0.2-0.8 part of glass fibers, 4-8 parts of gas channeling inhibitor and 2-6 parts of early strength agent. The thickening time and the coagulation time of the nano cement paste can meet the construction safety requirement of squeezing cement in a deep well; by the adoption of the nano cement paste, the penetrability of nano cement is improved, and effective blocking of a deep stratum is achieved. According to the nano cement paste, hydrophilic group nanomaterials are introduced for preparing the cement paste, the liquid rheology characteristic of the cement paste is improved by means of the modification function of cement paste by the nanomaterials, and the strength at the middle stage and later stage of the cement paste is improved.

The invention discloses a direct bilirubin detection reagent. The direct bilirubin detection reagent comprises diluents and reaction reagents. The diluents comprise a buffer 1, a surfactant, an antiseptic and ascorbate oxidase. The reaction reagents comprise a buffer 2, common salt, disodium ethylene diamine tetraacetate, hydroxylamine sulphate, etidronic acid, sodium persulfate, sulfuric acid, an antiseptic and a freeze-drying protective agent. The direct bilirubin detection reagent has good sensitivity, accuracy, precision and linearity and can satisfy clinical examination requirements.

The invention discloses a novel method for detecting content of formaldehyde in a plate. The novel method comprises the following steps: (1) extracting released substances in a detected sample piece through microwaves with water serving as an extracting solution for 4 to 8 min; (2) adding purified etidronic acid with the same volume as that of the detected sample piece into a container; (3) adding liquid formed in the step (1), and adding an equivalent amount of distilled water; (4) adding 25 microliters of formaldehyde developing agent, stewing for 15 to 20 min, and uniformly shaking once every 5 min; (5) comparing the color of the liquid in the step (4) with a standard chromatoplate by using a spectrophotometer. The method disclosed by the invention is simple, feasible, low in cost and pollution-free, is particularly suitable for self-detection of formaldehyde releasing property of a product by an enterprise, and is wide in application range; the method can be used for sampling inspection of plates and formaldehyde content detection of other products.

The invention discloses a wet-mixed mortar additive capable of enhancing the early strength of mortar. The wet-mixed mortar additive comprises materials A and materials B. The materials A comprise 10%-40% of multifunctional water-retaining agents, 1%-3% of shrinkage reducing agents, 0.1%-0.5% of welan gum and the balance water. The materials B comprise 10%-30% of carbohydrate retarders, 10%-30% of organic phosphorus retarders, 1%-5% of air entraining agents and the balance water. The carbohydrate retarders are one type of or a plurality of types of sodium gluconate, sucrose and citric acid; the organic phosphorus retarders are one type of or a plurality of types of etidronic acid, amino trimethylene phosphonic acid, 2-phosphonic acid butane-1 and 2, 4-tricarboxylic acid; the air entraining agents are one type of or a plurality of types of AE-200 type polyether concrete high-performance air entraining agents, ethoxylated lauryl alcohol sulfates, alpha-sodium olefinsulfonate, triterpenoid saponin and rosin pyrolytic polymers. The wet-mixed mortar additive has the advantages that the operable time of the wet-mixed mortar can be effectively prolonged, the early strength of the mortar can be quickly improved, and the construction progress can be effectively improved.

The invention discloses environment-friendly waterproof paint which consists of the following raw materials in parts by weight: 62-70 parts of styrene-acrylic emulsion, 0.4-1 part of pyromellitic dianhydride, 1-2 parts of guaiacol, 1-2 parts of mannitol, 0.1-0.2 part of potassium titanate, 6-10 parts of fluorapatite, 4-6 parts of talcum powder, 1-2 parts of 1,2-dimethylimidazole, 2-3 parts of dioctyl azelate, 1-2 parts of sodium metasilicate, 0.5-1 part of polypropylene glycol diglycidyl ether, 0.5-1 part of coco fatty acid diethanol amide, 0.3-0.6 part of etidronic acid, 5-7 parts of coalescing agent and 10-16 parts of deionized water. The waterproof paint is good in waterproof effect, high in leakage resistance, excellent in ageing resistance, high in adhesive force, high in material extensibility, high in constructability, safe and environment-friendly and does not have any toxic or side effect.

The invention relates to a highly efficient corrosion and scale inhibition dispersant. The weight ratio of the components, etidronic acid, ethylene diamine tetraacetic acid disodium salt and zinc sulfate is 6:3:1. Then manganese sulfate with a weight of 0.001 times as much as the materials is added as an additive. The preparation method is as follows: under normal temperature and stirring conditions, the materials, etidronic acid, ethylene diamine tetraacetic acid disodium salt and zinc sulfate are put into a container as the weight ratio, and then the manganese sulfate is added as an additive. The invention has the advantage that the invention has solved the problem in the prior art that the reclaimed water treatment agent is only suitable for low-temperature water treatment, but not for high-temperature water treatment. The invention is quite suitable for stabilizing treatment of circulating water quality in metallurgy, petroleum, chemical industry and power generation.

The invention discloses a non-oxidized type compound bactericide for water treatment and a preparation method thereof. The non-oxidized type compound bactericide is prepared by the steps of weighing glutaraldehyde, acrylic acid-2-acrylamide-2-methyl propane sulfonic acid copolymer, tetradecyl benzyl dimethyl ammonium chloride, etidronic acid, water, PBTCA, a polymerization inhibitor, sulfonic acid, polyol phosphonate ester, PESA, a dispersant, sodium tungstate, bitertanol, sodium benzoate and acrylic acid-hydroxy-propyl acrylate copolymer in parts by weight, and mixing uniformly. The product is 100% water-soluble, and has a sterilizing rate of 99.9-100% to escherichia coli, staphylococcus aureus, candida albicans, neisseria gonorrhoeae, penicillium notatum, aspergillus, saprophytic bacteria and salmonella; and the sterilizing rate is 98-100% after the bactericide is placed for one month at 50-60 DEG C, the sterilizing rate is 97.9-99.9% after the bactericide is placed for half a year at 40-50 DEG C, and the sterilizing rate is 97.5-99.5% after the bactericide is placed for 1-2 years at room temperature.

The invention relates to lamp heat dissipation materials, in particular to an LED aluminum-base composite heat dissipation material containing modified powdered pumice and a production method of the material. The heat dissipation material comprises, by weight, five to eight parts of zirconium silicate, seven to nine parts of silicon carbide, 70 to 72 parts of aluminum, three to five parts of pentaerythritol, 13 parts to 15 parts of aluminum nitride, 10 parts to 12 parts of magnesium, five parts to eight parts of copper nanoparticles, eight parts to ten parts of the powdered pumice, seven parts to eight parts of aluminum oxide, three parts to five parts of silicone oil, six parts to eight parts of potassium titanate whisker, two parts to four parts of etidronic acid and four parts to five parts of auxiliaries. According to the heat dissipation material, advantages of the aluminum, the magnesium, the zirconium silicate, the silicon carbide and other components are integrated, the good heat conduction and insulation performance can be both considered, the modified powdered pumice formed by mixing of etidronic acid dilute solutions, the silicone oil and the pentaerythritol and the potassium titanate whisker are more compatible with other metal powder, heat conductivity coefficients are improved, the heat dissipation material is compact in structure, light, safe and durable in use, an LEDF chip can be effectively protected due to the rapid heat dissipation capability, and the service life of a lamp is prolonged.

The invention relates to a concrete release agent comprising the following components in percentage by mass: 10%-15% of perfluorinated alkyl ethylene oxide, 10%-25% of fatty alcohol-polyoxyethylene ether, 12%-19% of a complexing agent, 14%-20% of n-butyl acetate, 6%-12% of formic acid, 8%-16% of methylphenol, 9%-15% of sodium metasilicate, 3%-8% of diethylstilbestrol, 6%-14% of acetone, 9%-15% of cyclohexanone, 6%-15% of potassium hydroxide, 3%-17% of etidronic acid, 40%-60% of pure water, and 8%-10% of a tribromosalicylaniline, triethanolamine and glycerinum mixture, wherein the weight ratio of tribromosalicylaniline to triethanolamine to glycerinum in the mixture is 2 to 7 to 1. The concrete release agent disclosed by the invention is capable of playing roles in protecting a template, improving the appearance quality of concrete, enhancing the surface smoothness of the film, and the like.

The invention discloses neutral oil and rust removing detergent. The neutral oil and rust removing detergent comprises the following raw materials in parts: 10-15 parts of acrylic acid, 15-18 parts of methyl methacrylate, 10-15 parts of styrene, 12-15 parts of ethylene oxide, 5-10 parts of amino trimethylene phosphonic acid, 3-5 parts of etidronic acid, 3-8 parts of ferric hydroxide, 5-10 parts of sodium benzoate, 5-8 parts of triethanolamine, 10-15 parts of sodium bicarbonate, 12-15 parts of potassium carbonate, 15-20 parts of sodium alkyl benzene sulfonate, 8-12 parts of fatty alcohol-polyoxyethylene ether, 10-15 parts of trisodium phosphate, 12-20 parts of urea, 10-15 parts of citric acid, and 100-150 parts of purified water. The neutral oil and rust removing detergent is neutral, has little corrosion to equipment made of various materials, widens the application range, and has better storage stability.

The invention relates to a metal antirust agent and a production technique thereof. The metal antirust agent comprises 13-17 parts of citric acid, 6-9 parts of acetic acid, 8-12 parts of etidronic acid, 5-11 parts of sodium phytate, 7-10 parts of hexamethylene tetramine, 5-8 parts of triethanolamine, 7-9 parts of sodium chloride, 13-17 parts of polyethylene glycol, 9-15 parts of silicon dioxide, 3-7 parts of manganous dihydrogen phosphate, 2-4 parts of ammonium molybdate, 9-13 parts of epoxidized soybean oil, 1-3 parts of a corrosion inhibitor, 7-11 parts of o-toluidine, 6-9 parts of sodium sulfonate, 2-5 parts of sodium carboxylate, 3-6 parts of polydimethylsiloxane, 3-5 parts of a defoaming agent, 2-4 parts of a dispersing agent and 3-6 parts of bactericide. The metal antirust agent contains special additives and can permeate rust, corrosives, oil stains, mud and the like so that a connecting piece can be released slowly and removed easily, and dirt such as incrustation and dust adhering to the surface of metal can be effectively removed; and besides, an antirust oil film is reserved on the surface of metal or other materials, so that moisture and water are effectively isolated and the service life of the connecting piece is effectively prolonged.