32 results about "Corrosion inhibitor" patented technology

Aqueous cleaning solutions are provided for cleaning an integrated circuit device formed on a wafer, as well as methods of cleaning a wafer using the aqueous cleaning solution. In one aspect, an aqueous cleaning solution includes a low foam surfactant, a metal corrosion inhibitor, an acidic pH control agent or an alkali pH control agent, and water.

A flux without halogen, rosin and washing for Pb-free solder contains activating agent (8.0-15.0 Wt %), cosolvent (28-40), filming agent (0.1-1.0), corrosion retardant (0.1-0.5) and the solvent and deionized water (rest).

The invention provides a preparation method of a corrosion inhibitor of methanol gasoline, and belongs to the technical field of metal corrosion protection. The preparation method comprises steps as follows: alpha-methylstyrene dimer, maleic anhydride, dicumyl peroxide and dimethylbenzene are added into a reactor, and then, the mixture is heated in an atmosphere of nitrogen for reacting; after the mixture is cooled to the room temperature, octadecanol, polyethylene glycol, p-toluenesulfonic acid, n-butyl alcohol and ethyl acetate are added, the mixture is heated for reacting and then cooled to the room temperature, and a mixture I is obtained; the mixture I is washed with a sulfuric acid aqueous solution, then washed with an NaOH aqueous solution and finally washed with an aqueous solution, and a mixture II is obtained; and benzotriazole, 2, 6-tert-butyl-4-methyl phenol, hexamethylene tetramine, ethanol, propargyl alcohol, trimellitate, a surface active agent and a combustion improver are added into the mixture II and uniformly stirred, and the corrosion inhibitor is obtained. The provided methanol gasoline has good solubility with various oils, the additive amount is small, and the corrosion-resistant effect is superior to that of a similar product.

The invention discloses rotating spray sand cleaning method, which is used for cleaning sand at the bottom of a well. The method comprises the following steps of: A, connecting a shaft sand cleaning pipe column, inserting into the well, and detecting the depth of a sand surface by using the shaft sand cleaning pipe column; B, lifting the shaft sand cleaning pipe column by 1-3 meters; C, connecting a pump to the top of the shaft sand cleaning pipe column and pumping liquid for impacting settled sand at the bottom of the well; D, making the impacted sand flow upwards in an oil thimble along with fluid, settle downwards and settle into a slotted casing; and E, putting the shaft sand cleaning pipe column down, continuously washing sand to a designed construction well depth position, and pulling the shaft sand cleaning pipe column out of the well to finish rotating spray sand cleaning operation. Due to the adoption of the method, settled sand, metal smashed blocks, stained metal blocks and corrosion inhibitor adhesives at the bottom of the well can be cleaned, a production layer is exposed, and high sand cleaning efficiency is achieved.

The invention discloses novel cleaning fluid. The novel cleaning fluid comprises (a) quaternary amine hydroxide, (b) alcohol amine, (c) solvent, (d) silane (e) boric acid ester (borate) and (f) a star-shaped copolymer containing pigment affinity group. The photoresist stripping fluid takes silane, boric acid ester and the star-shaped copolymer containing pigment affinity group as the main metal corrosion inhibitor, so that the base materials, such as metal aluminum, copper and the like can be effectively prevented from being etched basically in compounding and in use; meanwhile, the stripping fluid can effectively remove the photoresist from a wafer, and can directly rinse the cleaned wafer by water. Therefore, the novel cleaning fluid has wide application prospects in metal cleaning, semiconductor wafer cleaning and other microelectronic fields.

The invention discloses a low-temperature peracetic acid disinfectant and a preparation method thereof. The low-temperature peracetic acid disinfectant is prepared by mixing a composite low-temperature solvent and peracetic acid in any proportion, and the composite low-temperature solvent comprises the following components in percentage by mass: 60-99% of water, 1-40% of an antifreezing agent, 0-5% of a thickening agent and 0-5% of a corrosion inhibitor. The low-temperature freezing liquid can be used at different low temperatures, the lowest freezing point can reach -25 DEG C, and the low-temperature freezing liquid also has the characteristics of small metal corrosion, low volatilization and low irritation. The invention solves the dilemma of lack of efficient, stable and environment-friendly products in current low-temperature disinfection, solves the problems of poor stability, high irritation, low activity at low temperature, poor effect and the like of conventional products, and can be used for disinfection in various links of a cold chain and various low-temperature environments.

The invention provides a sterilization corrosion inhibitor for oil field water treatment system as well as a preparation method and application thereof. The sterilization corrosion inhibitor is prepared from 5wt%to 60wt% of dodecyl dimethyl benzyl ammonium halide, 0.5 wt% to 5wt% of sterilization synergist, 10wt% to 30wt% of surfactant, 3wt% to 10wt% of buffer and the balance of water. The sterilization corrosion inhibitor has high sterilization efficiency, has high bactericidal effects on sulfate reducing bacteria (SRB) and total general bacteria (TGB), has long drug effect duration, is hardto produce drug resistance, simple in production process and low in cost, and has a good corrosion inhibition effect on CO2 corrosion.

The invention discloses an organic corrosion inhibitor for inhibiting magnesium alloy corrosion and an application method of the organic corrosion inhibitor in an automobile cooling liquid or a corrosion aqueous solution. The corrosion inhibitor consists of the components in percentage by weight: 10-90 percent of pyrazine or/and piperazine and 10-90 percent of water or/and ethanol. According to the application method, the corrosion inhibitor is added into the automobile cooling liquid or the corrosion aqueous solution which immerses a magnesium alloy according to an adding amount of 50-1,000 ppm under a condition at the temperature of -50-90 DEG C. The using amount of the corrosion inhibitor disclosed by the invention is small; the corrosion inhibitor is high in corrosion inhibition efficiency and good in corrosion inhibition effect; under normal temperature, the corrosion inhibition rate can be over 90 percent. The corrosion inhibitor is organic, so that the common shortcomings of an inorganic corrosion inhibitor are overcome; the application temperature range is wide; the organic corrosion inhibitor is applicable to low temperature and normal temperature and can still effectively inhibit corrosion of the magnesium alloy in a solution medium with higher temperature, and the corrosion inhibition rate can be over 80 percent under the higher temperature. The corrosion inhibitor product disclosed by the invention has the advantages of simplicity in production, wide application range, no toxicity, no peculiar smell, complete water solubility, safety and convenience in operation, good economical property and the like.

Provided are a viscous acid and a preparation method thereof. The preparation method includes: adding 60.00-81.25 parts of water, 15.00-25.00 parts of 31% dilute hydrochloric acid, 0.25-1.00 part of biological activator, 0.50-4.00 parts of an acidizing corrosion inhibitor and 1.00-5.00 parts of an iron ion stabilizer into a container, dropwise adding 2.00-5.00 parts of acidizing thickener THICK-B100 under stirring, and mixing well to form a viscous acid solution; the viscous acid is 4 to 5 times as high as a conventional acid in retarding action, never causes pit corrosion near a shaft, and may cause long cracks that have excellent flow guide capacity; viscous acid gel-breaking liquid is lower than 30 mN/m in surface tension and never causes water blocking damage during flowback.

The invention relates to a formula and preparation method of high temperature stable emulsified acid. The formula of the high temperature stable emulsified acid comprises the following components in mass percent: 55.0-80.0 percent of 15-28% hydrochloric acid, 17.0-42.5 percent of diesel oil No. 0, 0.2-0.7 percent of an emulsifying agent, 0.2-0.5 percent of a co-emulsifier, 0.8-2.5 percent of a corrosion inhibitor, 0.2-0.5 percent of a corrosion inhibition synergistic agent and 1.0-2.0 percent of a ferric ion stabilizer, wherein the emulsifying agent is an ester with 12-18 carbon atoms and unsaturated double bonds or acetate of the ester; the co-emulsifier is sorbitan oleate; the corrosion inhibitor is a condensation compound of aldehyde, inorganic amines and cyclic ketones; the corrosion inhibition synergistic agent is cuprous chloride, potassium iodide, formamide or pyroantimonate; and the ferric ion stabilizer is nitrilotriacetic acid or sodium erythorbate. According to the formula disclosed by the invention, the corrosion inhibitor and the emulsifying agent have good compatibility, the preparation technology is simple, the operation is convenient, and the quality of the emulsified acid is easily controlled.

The invention discloses methanol gasoline. The methanol gasoline is prepared from the following components in percentage by mass: 60-70% of methanol, 6-7% of aromatic hydrocarbon, 40-46% of naphtha, 0.004-0.0043% of sodium hydroxide, 0.3-0.33% of corrosion inhibitors, 0.2-0.23% of antioxidants, 0.5-0.53% of lubricants and 2-2.2% of stabilizers. The methanol gasoline has the following beneficial effects: (1) additives adopt raw materials with abundant sources, stable performance and clean emission after combustion, the mixing process is simple, the production cost is low, and the production process is free emission of three wastes; (2) the environment can be effectively protected, the fuel cost can be reduced, and the petroleum resource can be saved; and (3) the methanol gasoline has good protection effects on power systems and oil supply systems of vehicles. Actual test and inspection of the methanol gasoline show that power performance, lubrication performance, corrosion resistance, oxidation resistance, low-temperature ignition and oil consumption of the methanol gasoline are superior to that of 92# national 5 standard gasoline. The methanol gasoline fuel is simple in composition, wide in raw material resources, low in production cost, high in combustion performance, long in storage time, free of stratification and free of deterioration, and is worth of mass production, popularization and application.

The invention discloses a camellia oleifera abel shell compound corrosion inhibitor and a preparation method and application thereof. The camellia oleifera abel shell compound corrosion inhibitor comprises 0.1-1.0 g/L of camellia oleifera abel shell extract, 0.05-0.5 g/L of aromatic aldehyde compound, 0.1-0.5 g/L of anionic surfactant, 0.01-0.1 g/L of polyvinylpyrrolidone and the balance picklingsolution. The preparation method comprises the following steps: mixing and uniformly stirring raw materials with the formula ratio to obtain the target camellia oleifera abel shell compound corrosioninhibitor. The camellia oleifera abel shell compound corrosion inhibitor is applied in acid pickling of iron and steel materials.

The invention discloses a copper material surface detergent, which is characterized in that active ingredients mainly comprise the following ingredients and parts in mass: 10-13 parts of non-ionic surface active agent, 10-20 parts of anionic surfactant, 8-10 parts of silicon dioxide grinding agent, 0.1-2 parts of stabilizer, 5-8 parts of sulfamic acid, 5-10 parts of corrosion inhibitor and 2-5 parts of sodium bicarbonate. The copper material surface detergent is safe, easy to use and convenient; the non-ionic surface active agent and the anionic surfactant are adopted for compounding, so that the detergency is good, and the system can be stable for a long time due to the addition of the stabilizer; and since the silicon dioxide grinding agent with a particular grain diameter is added, the bright effect of the product can be strengthened.

The invention belongs to the field of metal pickling inhibitors and discloses an environment-friendly carbon steel pickling inhibitor. The environment-friendly carbon steel pickling inhibitor is composed of polyaspartic acid and chloride ions. Application of the environment-friendly carbon steel pickling inhibitor includes: adding 0.5-5g/L polyaspartic acid and 0.001-0.005mol/L chloride ions into a pickling solution which is a sulfuric acid solution with the concentration being 0.5-1mol/L, controlling the temperature to be about 20-40 DEG C, adding to-be-pickled carbon steel and products thereof, and soaking for 0.5-2h. The environment-friendly carbon steel pickling inhibitor is effective in corrosion inhibition, and the polyaspartic acid is a water-soluble macromolecular substance; a preparation method of the inhibitor is simple, production conditions are mild, and applying the inhibitor to the pickling solution can effectively prevent unnecessary loss of the carbon steel and products thereof in a pickling process. In addition, the environment-friendly carbon steel pickling inhibitor has the advantages of environment friendliness, extensive source, wide market prospect and high application value.

The invention discloses an anti-scaling agent for metal equipment. The anti-scaling agent for the metal equipment comprises, by weight, 10-20 parts of surface active agents, 5-10 parts of corrosion inhibitors, 3-5 parts of penetrating agents, 7-9 parts of hydrotropic agents, 8-20 parts of anti-redeposition agents, 5-15 parts of aluminum silicate fibers, 10-20 parts of ethyl alcohol and 5-30 parts of water. Compared with the prior art, the anti-scaling effect is excellent, raw materials are low in cost and popularization is easy.

The invention discloses a preparation method of silver-coated copper conductive powder. The preparation method comprises the following steps: step 1, cleaning: cleaning flaky copper powder by using an organic solvent and acid; 2, coating the surface of the copper powder with silver, wherein water and a complexing agent are added into an ultrasonic reaction kettle, and the ultrasonic reaction kettle is started for activation; putting the cleaned flaky copper powder into an ultrasonic reaction kettle, adding a surfactant, a stabilizer, ceric sulfate and a pH regulator, uniformly stirring, sequentially adding a silver-ammonia complexing solution and a reducing agent, reacting, cleaning, filtering and drying to obtain silver-coated copper powder; wherein the stabilizer is one of BYK180, BYK191 and BYK161, and the stabilizer is one of BYK180, BYK191 and BYK161; and 3, post-treatment of the silver-coated copper powder: the silver-coated copper powder is added into a kneading machine for low-speed kneading, stearic acid is added for kneading for a period of time, then a corrosion inhibitor is added for kneading, drying is performed after kneading is completed, and the silver-coated copper conductive powder is obtained. The silver-coated copper conductive powder which is good in appearance, compact in coating and stable in conductivity is prepared under the liquid phase condition by adopting a mode of combining matrix ultrasonic waves and double stirring.

The invention provides a gel type annulus protection liquid and a preparation method thereof. The gel type annulus protection liquid is composed of a corrosion inhibitor, an organic phosphonic acid scale inhibitor, a non-oxidizing bactericide, a deoxidant, a hydrophobic association polymer, a cross-linking agent and the like, can be injected into a system at a time according to field requirements,and can also be injected into the system in a slug mode according to concentration decreasing, and the effect of effectively preventing leakage of protection liquid caused by failure of a packer is achieved. In addition, due to the association effect, the hydrophobic association polymer in the system can form an intermolecular association space network structure, gel formed after further crosslinking between molecules has a certain drainage function and can play a certain role in plugging casing breaking formation water immersed into an annulus, and the action period of the annulus protectionliquid is prolonged. The system is simple in on-site injection process, obvious in application effect and free of pollution to the environment.

The invention discloses an amino phosphate water-soluble corrosion inhibitor and a preparation method thereof. The corrosion inhibitor contains, by weight, 30-45 parts of amino phosphate mixed solutions, 4-6 parts of N-methyl thiourea, 5-10 parts of ethylene glycol monomethyl ether, 5-8 parts of formamide, 5-9 parts of p-hydroxybenzoic acid, 1-5 parts of nonylphenol polyoxyethylene ether, 1-2 parts of octyl phenol polyoxyethylene ether, 6-23.5 parts of water, 8-15 parts of vinyl ethylene glycol ether, 0.5-2.5 parts of3-methyl-2-pentene-4-alkynol and 2-6.5 parts of acetaldehyde methyl hexyl acetal. The amino phosphate corrosion inhibitor has good anti-corrosion effects on an oil and gas field collecting and conveying system with high CO2 (partial pressure of 0-5 MPa) and H2S coexistence (the partial pressure of 0-1 MPa).

The invention discloses a scale and corrosion inhibitor which comprises trifluoroethyl methacrylate, hexafluorobutyl acrylate, chloropropene, lauryl amine, deionized water, trimethylamine, zinc sulfate and sodium gluconate. The scale and corrosion inhibitor is mainly applicable to the field of industrial circulating cooling water, and has favorable corrosion and scale resistance. The preparation technique is simple and controllable, and is suitable for large-scale industrial production.

The invention discloses an industrial salt snow melting agent additive and a using method thereof. The additive comprises the following components in parts by weight: 10 to 50 parts by weight of a concrete protective agent; 10 to 30 parts by weight of a corrosion inhibitor; 3 to 5 parts by weight of a plant protection agent and 1 to 10 parts by weight of a soil anticaking agent. Through the technical scheme, the performance of each component of the additive is not affected, and reduction of the harm effect of an industrial salt snow melting agent on road steel facilities, plants, cement concrete and soil is comprehensively considered, so that the environmental protection performance of the industrial salt snow melting agent is obviously improved.

The invention discloses a metal spray cleaning agent which is composed of the following components including, by weight, 8% of sodium metabisulfite, 2% of ferrous sulfate, 3% of sodium tripolyphosphate, 2% of 3-methoxyl-3-methyl-butanol, 15% of an aluminum corrosion inhibitor, 10% of polyethylene glycol, 2% of cold-drawn polypropylene fiber, 2% of a silane coupling agent, 10% of polypropylene, 2%of a defoamer, 5% of diisocyanate, 4% of phosphorus-containing polyol, 5% of aluminum chloride, 2% of sodium nitrate, 1% of anhydrous borax, 1% of 2-hydroxyl-2-methyl-1-acetone, 5% of hexamethyl disilazane, 1% of polytetrafluoroethylene and the balance water. The cleaning agent can still maintain a low-foam or even non-foaming state when deburring is carried out at a spray pressure of 20 MPa to 15MPa at 20-40 DEG C, and the residual degree after cleaning is low.